Ndị nrụpụta mgbama DigiTech RTA Series II

Ozi ngwaahịa

Nkọwapụta

• Nlereanya: Ndị nrụpụta mgbaama 18-0121-B
• Ụbọchị mmepụta: 6/8/99
• Usoro: Usoro RTA, 834/835 Usoro, 844 Usoro, 866 Usoro
• Ụdị nkwụnye: CEE7/7 (Continental Europe)
• Power Cord Colors: Green/Yellow (Earth), Blue (Neutral), Brown (Live)

kpachara anya
Ihe ize ndụ nke ujo ọkụ eletrik anaghị emeghe

IHE: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR

Ịdọ aka ná ntị: Iji ebelata ihe ize ndụ nke ọkụ ma ọ bụ ujo ọkụ eletrik emeghị ka mmiri ozuzo ma ọ bụ mmiri mmiri kpughee ngwa a.

Akara ngosi egosiri n'aka ekpe bụ akara mba ụwa nabatara nke na-adọ aka na ntị maka ihe egwu nwere ike iji ngwaahịa eletrik. Ọkụ ọkụ na Arrowpoint na triangle nhata pụtara na enwere voltages dị n'ime unit. Ebe mkpu na triangle nha nhata na-egosi na ọ dị mkpa ka onye ọrụ rụtụ aka na ntuziaka onye nwe ya.
These symbols warn that there are no user serviceable parts inside the unit. Do not open the unit. Do not attempt to service the unit yourself. Refer all servicing to qualified personnel. Opening the chassis for any reason will void the manufactuer’s warranty. Do not get the unit wet. If liquid is spilled on the unit, shut it off immediately and take it to a dealer for service. Disconnect the unit during storms to prevent damage.

UK MANS PLUG ỊDỌ AKA NA NTỊ
Ihe plọg a kpụrụ akpụ nke ebipụrụ na eriri ahụ adịghị mma. Tụfuo plọgụ mains na ebe mkpofu kwesịrị ekwesị. Ọbụlagodi n'okpuru ọnọdụ ọ bụla ị ga-etinye isi ihe mebiri emebi ma ọ bụ gbutuo n'ime 13 AMP SOKET IKE. Ejila plọgụ mains na-enweghị mkpuchi fiusi nọ n'ebe. Enwere ike nweta mkpuchi fiusi ngbanwe n'aka onye na-ere ahịa mpaghara gị. Igwe ngbanwe bụ 13 amps na a ghaghị ịkwado ASTA na BS1362.

Ntuziaka nchekwa (Europe)

MARA AKA FOR CUSTOMERS IF YOUR UNIT IS EQUIPPED WITH A POWER CORD.

Ịdọ aka ná ntị: Ngwa a ga-akụrịrị.
A na-acha ụcha cores ndị dị na ụzọ isi n'ụzọ kwekọrọ na koodu ndị a:

GREEN na odo - Ụwa na-acha anụnụ anụnụ - Na-anọpụ iche Brown - Na-ebi
Dị ka agba nke cores dị na isi ụzọ ngwa nke ngwa a nwere ike ọ gaghị adaba na akara ndị nwere agba na-achọpụta njedebe dị na plọg gị, gaba na nke a:

• Isi nke na-acha akwụkwọ ndụ akwụkwọ ndụ na odo ga-ejikọtarịrị na njedebe dị na plọg ejiri akara mkpụrụedemede E, ma ọ bụ akara ụwa, ma ọ bụ akwụkwọ ndụ akwụkwọ ndụ na-acha akwụkwọ ndụ akwụkwọ ndụ, ma ọ bụ akwụkwọ ndụ akwụkwọ ndụ na odo.
• Isi nke na-acha anụnụ anụnụ ga-ejikọtarịrị na ọnụ nke akara N ma ọ bụ ojii nwere agba.
• Isi nke nwere agba aja aja ga-ejikọta ya na njedebe akara L ma ọ bụ ọbara ọbara.
• These units comply with the European “EMC Directive” for emissions and susceptbility

Akwụsịla eriri ike na plọg CEE7/7 (Continental Europe). Ejikọrọ waya akwụkwọ ndụ akwụkwọ ndụ/acha odo odo ozugbo na chassis nke otu ahụ. Ọ bụrụ na ịchọrọ ịgbanwe plọg, ma ọ bụrụ na ị tozuru oke ime ya, rụtụ aka na tebụl dị n'okpuru.

NDỤMỌDỤ		ỤLỌ WIRE
		Nkịtị	Alt
L	LIVE	Agba aja aja	OJI
N	AKWỤKWỌ	Acha anụnụ anụnụ	Ọcha
E	EARTH GND	GREEN/YEL	GREEN

Ịdọ aka ná ntị: Ọ bụrụ na e meriri ala ahụ, ụfọdụ ọnọdụ mmejọ dị na unit ma ọ bụ na usoro nke ejikọrọ ya nwere ike ime ka eriri zuru oke.tage n'etiti chassis na ala ala. Ahụhụ siri ike ma ọ bụ ọnwụ nwere ike ịpụta ma ọ bụrụ na emetụ chassis na ala ala aka n'otu oge.

IIHE!
Maka nchekwa gị, biko gụọ ihe ndị a:

• MMIRI NA MMIRI: Appliance should not be used near water (e.g. near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swim-ming pool, etc). Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.
• ISI IKE: Ekwesịrị ijikọ ngwa ahụ na ọkụ ọkụ naanị nke ụdị akọwara na ntuziaka ọrụ ma ọ bụ dị ka akara na ngwa ahụ.
• NTỌ OR POLARIZATION: Ekwesịrị ịkpachapụ anya ka a ghara imeri ntọala ma ọ bụ ụzọ nrụnye ngwa ọrụ.
• Nchekwa eriri eriri: Ekwesịrị ịkwatu ụdọ ndị na-enye ọkụ ka o wee ghara ịgafe ya ma ọ bụ tuo ya site na ihe ndị a na-etinye n'elu ma ọ bụ megide ha, na-aṅa ntị nke ọma na eriri ndị dị na plọg, ebe nchekwa dị mma, na ebe ha si na ngwa ahụ pụta.
• IHE: Onye ọrụ ekwesịghị ịnwa ịnye ngwa ngwa ahụ karịa nke akọwara na ntuziaka ọrụ. Ekwesịrị izigara ndị ọrụ ruru eru ọrụ ọrụ ndị ọzọ.

RTA SERIES II

Okwu mmalite

Onye nyocha ọdịyo oge (RTA) bụ ngwaọrụ nha ụda nke na-egosi ụdị ozi abụọ n'ụzọ doro anya:

1. The frequency response of an audio system or device, and
2. The frequency response of the listening environment.

Ụdị ozi a bara ezigbo uru maka ịhazi usoro PA, ịchọta nzaghachi na-ekpo ọkụ, ma ọ bụ "ọnụ ọnụ", na ọnọdụ nkwado, na ịgbatị nzaghachi ugboro ugboro nke akụrụngwa ọdịyo ndị ọzọ.
RTAs that show both the entire audible frequency spectrum (20 Hz to 20 kHz) and its entire dynamic range (loudness from 0 dB to 120 dB) are called spec-trum analyzers. RTAs that show portions of the dynamic range are called “window” RTAs.

Banyere DOD RTA
DOD Electronics RTA Series II bụ ụdị windo RTA. Ọ na-ekpuchi ụdịdị dị iche iche a na-anụ (20 Hz ruo 20 kHz), ma nwee mita ọkwa LED ise maka nke ọ bụla n'ime bandwit 31 nke ọ na-ekpuchi.
Usoro RTA II na-agụnye igwe ihe nleba anya ọdịyo. Enwere igwe okwu a nwere eriri ụkwụ 40 nke na-enyere gị aka idobe igwe okwu n'ọtụtụ ebe na mpaghara nkwado ka ị na-eme nyocha nke sistemụ ọdịyo. Naanị igwe igwe okwu a ka a ga-akụnye n'ime jakị dị n'ihu panel nke RTA. Igwe okwu ndị ọzọ nwere ike mebie ma ọ bụ nye ọgụgụ na-ezighi ezi.
Enwere ike gbanwee uche nke RTA site na iji njikwa ọkwa ntinye, na windo RTA nwere ike gbasaa ma ọ bụ mechie site na iji Mgbanwe Mkpebi. Mgbanwe a na-enye gị ohere ịhọrọ oke ngosi ngosi LED na dB kwa LED. Ị nwere ike ịhọrọ ma ọ bụ 1 dB kwa ọkwa LED (maka windo obosara 4 dB) ma ọ bụ 3 dB kwa nkwụsị ọkụ (maka windo 12 dB).

The DOD RTA Series II also has its own internal pink noise generator and level control. Pink noise is defined as an audio signal that contains all frequencies at equal energy levels. For this reason, pink noise sounds a lot like static. Pink noise is useful when setting up P.A. systems and audio systems when you need to see the frequency response of the system.

N'azụ nke unit ahụ bụ jaket igwe okwu inyeaka maka iji igwe igwe nha ndị ọzọ, yana jakị mmepụta maka igwe na-eme mkpọtụ pink. Mgbe ụda pink agbanyụrụ, jakị a na-arụ ọrụ dị ka mmepụta ọdịyo ka e wee gbanye mgbama ahụ site na RTA wee lelee ya n'oge arụmọrụ. Enwekwara jakị ntinye nke na-enye gị ohere inyocha akụrụngwa ozugbo na sistemụ.

IHE PANEL NA-ACHOL

• Ike mgba ọkụ: Applies power to the RTA.
• Gosipụta ọkụ ọkụ: Each vertical column of LEDs displays the signal level within that frequency band. Each frequency is on a 1/3rd octave ISO centered point from 20 Hz to 20kHz.
• Njikwa Ọkwa ntinye: This control sets the input level from the calibrated microphone input jack, the line level input jack, or the auxiliary microphone input jack. Use this control to set the response of the display to a useful range.
• Mgbanwe mkpebi: This push-push switch selects the size of step between LEDs to either 1 dB or 3 dB. This effectively widens or narrows the window that the RTA shows, giving you a wider or narrower view of the incoming sig-nal.
• Pink Noise Switch: This push-push switch turns the pink noise generator on or off. To prevent damage to your audio system, be sure to turn down your audio system’s gain control before turing on the pink noise generator.
• Pink Noise Level Control: This rotary potentiometer sets the output level of the pink noise generator. To prevent damage to your audio system, be sure to set this control to minimum before turning on the pink noise generator.
• Calibrated Microphone Input Jack: This jack supplies power to the calibrat-ed microphone. Plug only the calibrated microphone provided with the RTA into the jack on the front panel of the RTA. Other microphones may be dam-aged or give inaccurate readings.

ONYE NKE azụ azụ

Auxiliary Microphone Input Jack: A female XLR-type connector intended for use with microphones other than the calibrated microphone provided with theRTA. This jack accepts low impedance microphones.

• Line Input Jack: This is a 1/4-inch phone jack that may be connected to unbalanced line level sources.
• Line Output/Pink Noise Output Jack: A 1/4-inch phone jack that provides connection to unbalanced line level inputs. Engaging the pink noise switch on the front panel causes the pink noise generated by the RTA to be output through this jack. Adjust the level for the pink noise generator with the rotary potentiometer on the front panel of the RTA. Disengaging the pink noise switch on the front panel allows this jack to act as a pass-through to the sig-nal introduced at the line input jack.

AKWỤKWỌ ngwa
Nke a bụ echiche ole na ole dị mkpa ị ga-aghọta tupu i jiri RTA.
RTA na-atụ ngwaọrụ. Ọ naghị emetụta ma ọ bụ gbanwee ụda. Iji mee mgbanwe dị mkpa nke nzaghachi ugboro ugboro na sistemụ ọdịyo, ị ga-achọ ka ịnwe nhazi nhazi eserese ma ọ bụ ihe nhazi parametric. Ebe ọ bụ na RTA tụrụ na 1/3rd octave increments, ọ kachasị mfe iji ihe nhazi eserese 1/3rd octave na sistemụ, dị ka DOD's 231 Series II, 431 Series II, ma ọ bụ 831 Series II.
Ihe nhazi nhazi parametric bara uru. Nhata parametric, Otú ọ dị, adịghị mfe iji dị ka ihe nhata eserese.

Mara: A lot of “fixing” can be done by simply repositioning the microphones and speakers in a system.
RTA ga-enyere gị aka ịchọta nsogbu nzaghachi ugboro ugboro na sistemụ ọdịyo gị, na, iji nhazi nhazi, dozie nsogbu ndị ahụ. Ime ka ụda na-atọ ụtọ na-amalite mgbe ị na-edozi nsogbu nke usoro, ma na-eme nke ọma site na ntị nwere ahụmahụ. Sistemu “Flat” ga-adị ka ihe na-akụda mmụọ ma ọ bụ na-egbuke egbuke nye onye na-ege ntị n'ọtụtụ ọnọdụ nkwado, yabụ nhazi nhazi ga-adịcha mgbe niile ka ọ na-agbanwe iji mee ka sistemụ dị mma.
When measuring the sound in an enclosed sound reinforcement application, use more than one microphone location. This is because speaker dispersion characteristics vary greatly as you move around the room (particularly with multiple driver systems). If you find that different areas of the room behave differently, try to average the settings on the equalizer to correct the room as a whole.

Ịkwesighi iji ụda pink gbawaa sistemụ ahụ. Jiri naanị ọkwa zuru oke site na RTA iji merie mkpọtụ ọnụ ụlọ ọ bụla (dịka igwe ntụ oyi ma ọ bụ mkpọtụ okporo ụzọ). Mmetụta uche nke RTA kwesịrị ịdị elu nke ukwuu na mgbe ị gbanyụrụ ụda pink ahụ, ọ dịghị nke ọ bụla n'ime LEDs na-enwu site na mkpọtụ n'ime ụlọ ahụ.
Jiri ntọala mkpebi 3 dB na ugboro ole n'okpuru 500 Hz. Nzaghachi kacha elu nke mkpọtụ pink na-ebute mpụ na ntọala mkpebi 1 dB, na-eme ka ọ sie ike idozi ngwa ngwa. Jiri ntọala mkpebi 1 dB tụọ ugboro ugboro karịa 500 Hz.

Ịkwalite ndị isi na-ekwu okwu nke usoro nkwalite nkwalite ọkọlọtọ.
Nke mbụ, tinye igwe okwu elele 3 ruo 4 ụkwụ n'ihu ndị isi okwu na axis nke ọkà okwu. Nke a dị mkpa karịsịa na usoro ime ụlọ ka ị na-eme mgbanwe mbụ na usoro n'ime ebe a dị oke egwu (tupu ntughari nke gburugburu ụlọ ahụ nwere ohere imetụta nzaghachi nke usoro).
Gbanwuo igwe na-eme mkpọtụ pink, na-akpachara anya ka ị ghara ịgbawa usoro ahụ. Jide n'aka na ị tụgharịrị ntinye na sistemụ ahụ, wee welie ọkwa mkpọtụ pink ka ọ bụrụ ọkwa nlele a na-ege ntị. N'iji nhazi nhazi eserese, dozie nzaghachi nke sistemu ka ọ dị larịị dịka o kwere mee.
Ozugbo ịmechara ma mezie sistemu ahụ dị n'ubi dị nso, bugharịa igwe okwu a hazigharịrị banye n'ime ụlọ, ebe dị anya na-ege ntị site na ndị ọkà okwu. Ka ị na-ewepụ igwe okwu n'ebe ndị ọkà okwu nọ, ị ga-ahụ ihe abụọ:

1. The high frequency response of the system will fall off, usually starting at about 10 kHz.
2. When there are other structures nearby, one or more peaks or dips will appear in the low end.

The high frequency roll off is caused by absorption of high frequencies in the air. Don’t adjust the highs any more by measurement. The highs can be adjusted by ear using program material you’re familiar with. Be sure to check several positions in the room and compromise the equalization/attenuation setting for the best possible sound. This may be done either with the equalizer or by aiming the tweeters of the main speakers differently.

Mbelata ugboro ole dị ala na ọnụ ọnụ ọnụ ụlọ metụtara, enwere ike idozi ya ruo n'ókè ụfọdụ. Tupu ịmezigharị ihe ọ bụla, jide n'aka na ị ga-ebugharị igwe okwu elele anya gburugburu n'ime ụlọ ahụ ka ị mara ka ọnọdụ si dabere na ọnụ ọnụ ọnụ na ntanye. Mgbe ị maara ebe n'ime ụlọ ndị ọnụ ọgụgụ kasị elu dị, na ugboro ole ha na-eme, na nke ha amplitude, ị nwere ike ịnwa ịnwapụta ha site na iji nhazi nhata.
Finally, play some program material with which you’re familiar and set the sys-tem’s response to your taste.

Ịhazi STAGE na-enyocha iji RTA

• Usoro ndị a bụ ụzọ dị ngwa ma dị mfe iji wedata nzaghachi na sistemụ nleba anya, yana iji nweta ụda kacha mma site na s gị.tage nlekota. Debe igwe okwu edoziri ka sentimita ole na ole n'akụkụ stage igwe okwu.
• This is so that the stage igwe okwu anaghị abanye n'ụzọ nke igwe okwu calibrated mgbe ị na-ebuli stage nyochaa mgbaàmà.
• Turn on the pink noise generator, being careful not to blast the monitors. Make sure that you turn down the input to the system, then increase the pink noise level to a convenient measuring level. Use just enough level from the

RTA to overcome any ambient room noise

• Tụgharịa uru na stage igwe okwu ruo mgbe ha na-amalite azụ azụ. Ị ga-ahụ ugboro nzaghachi egosiri na windo RTA.
• Ọ bụrụ na ị na-eji ihe karịrị otu stage monitor, find the one that feeds back the worst and use that monitor to find the feedback nodes. Notch out the offend-ing frequency with your equalizer. Increase the gain on the stage micro-phones until you observe another feedback node. Notch out this frequency.
• Ị nwere ike ịnwa ịchọta ma chọpụta ugboro ndị ọzọ, ma mgbe ugboro atọ gasịrị, nke a agaghị arụpụta ihe. Ị ga-achọpụta na n'ime ime ihe omimi dị omimi iji belata nzaghachi, ụda ụda nke usoro nyocha na-ebelata.
• N'iji mkpọtụ pink, nwaa ime ka nzaghachi nke ndị nlekota. Ọ bụrụ na ị na-agbalị inweta ọkwa ụda kachasị elu enwere ike tupu nzaghachi sitere na stage Monitors, a ga-ebelata ụda ụda nke usoro nyocha. A na-enwetakarị ụda kacha mma site na ndị nlekota site na "ntọala nkwekọrịta" na nhazi nhazi. Ebumnuche nke ụdị ntọala a bụ iji nwayọ belata ọnụ ọnụ nzaghachi, mana ka na-ekwe ka ụda dị mma sitere na ndị nlekota.

Another method for equalizing a monitor system uses the stage microphones without the RTA’s calibrated microphone. Most reinforcement type microphones are not flat in their frequency response. This procedure, however, takes the stage microphone’s response into account as you equalize the system.

• Use the system’s own microphones to sample ebe ụda na stage using the pink noise generator signal. Have someone stand in front of the microphone or place their hand in front of the microphone so that you can see what effect it may have on the system’s feedback and overall sound.
• This is the best way to minimize feedback and get the highest sound level from the monitors, but you will sacrifice some sound quality.
• Once you’ve equalized the system with one of the above procedures, the following setup will help you find the howls and ringing that inevitably occur as you use the system (this procedure can be used for both monitors and mains).
• Use a mono or auxiliary output or loop through the RTA to your speakers.
• Adjust the level input to the RTA so that the “+” LEDs flash on signal peaks. Set the resolution of the RTA to the 3 dB range.
• After feedback occurs, watch the RTA. The last frequency band to decay is where the feedback is occurring. This frequency may then be notched out using the equalizer.

Nkọwapụta

• Number of Frequency Bands: 31.
• Display Range: 1 dB step per LED, or 3 dB step per LED.
• Level Range: 53 dB to 107 dB SPL.
• Display Attack Time: Peak, Instantaneous.
• Frequency Accuracy: ±4%.
• Pink Noise: Pseudo-random, digital synthesized.
• Pink Noise Level: -26 dBu to -7 dBu.
• Calibrated Microphone: Omni-directional, back-electret condenser-type, RTA powered.
• Microphone Sensitivity: -64 dB, ±3 dB (0dB =1V/μbar @ 1kHz).
• Microphone Frequency Response: 20 Hz to 20 kHz, ±1 dB.
• Auxiliary Microphone Input: XLR-type connector, balanced.
• Auxiliary Microphone Impedance: 4 kohms.
• Auxiliary Microphone Maximum Gain: 104 dB.
• Auxiliary Microphone Minimum Signal: -95 dBu.
• Line Level Input: 1/4-inch phone jack, unbalanced.
• Line Level Input Impedance: 30 kohms.
• Line Level Maximum Gain: 40 dB.
• Line Level Minimum Signal: -30 dBu.

834/835 SERIES 11

Okwu mmalite
DOD 834 Series II bụ ụzọ stereo 3, mono 4-way crossover, na 835 Series II bụ ụzọ stereo 2, mono 3-ụzọ crossover. Ebere netwọk crossover ndị a dị elu iji wepụta ogo ụda kachasị na multi- gị.amped ụda usoro na a price na-arụ ọrụ egwú nwere ike imeli.
Ezi steeti-agbanwe agbanwe, 18 dB/octave Butterworth nzacha na-egbochi ọnụ ọgụgụ dị elu ma ọ bụ itinye aka na mmepụta na ebe ndị na-agafe agafe, na-eme ka nchekwa dị mma nke ọkwọ ụgbọ ala site n'iwepụ ugboro ole crossover ngwa ngwa.
Enwere ike ịtinye ihe nzacha abụọ, ihe nzacha dị elu na elektrọnik na 40 Hz site na iji mgba ọkụ n'ihu panel (naanị 834), na nchikota obere oge na-agbanwe agbanwe dị maka ngwa subwoofer mono.
Akara azụ azụ nke 834/835 n'ụzọ doro anya maka ọrụ stereo na mono, yana nsonaazụ niile dị na 834 ma e wezụga ihe nrụpụta obere Frequency Sum mono Low Frequency Sum gụnyere mgbanaka usoro.

ADVANTAGES nke ọtụtụ AMPSistemụ LIFIER
Multi-amped sistemu eji iche ampliifiers n'ihi na onye ọ bụla ugboro ugboro band, ekwe onye ọ bụla amplifier iji wepụta arụmọrụ kacha n'ime oke akọwapụtara. Usoro a nke amplification na-emepụta ụda n'ozuzu ya dị ọcha yana mbelata dị ukwuu nke ike dị mkpa iji mee ka usoro ahụ gaa n'otu ọkwa dị ka oke zuru oke. amplified usoro na ike ọzọ.
A na-eme ike kachasị ike na sistemụ ụda site na obere ugboro nke ihe mmemme. Nke a bụ n'ihi na egwu na mgbama olu nwere ozi ugboro ole dị ala, yana ndị ọkwọ ụgbọ ala dị ala anaghị adịkarị mma karịa ndị ntụgharị ugboro dị elu.
Na multi-amped usoro, ike amplifier(s) for the low frequencies can be large enough to handle greater power demands, allowing high frequency power ampndị na-enye ohere ka ha dị obere, ma zuru oke iji dozie ihe achọrọ nke ọdịnaya dị elu nke ngwa mmemme. Ebe ọ bụ na ihe ọ bụla nke usoro ahụ na-eduzi ya amplifier, mgbagha ọ bụla na-eme na-ejedebe na ugboro ole nke ike ịnya ụgbọ ala amponye ndu. Ihe mgbaàmà ndị ọzọ na-anọgide na-edo anya na enweghị mgbagha.

Ọzọkwa, ebe ọ bụ na ọnụ ala dị ala, obere ampliifiers nwere ike ịrụ ọrụ nke ndị buru ibu ma dị oke ọnụ ampndị na-ebuli elu chọrọ ịnya ụgbọ ala zuru oke amped usoro, ọnụ ahịa nke a ụda usoro nwere ike nke ukwuu ibelata (na ụda mma na usoro). Ọ nwekwara ike ịdị mfe ibufe ọtụtụ obere ike ampndị na-agba gburugburu, karịa otu nnukwu, na-eme ka usoro ndị nwere ike ibugharị mfe ijikwa.

Ịwụnye

Wụnye crossover na akwa akwa site na iji skru ndị enyere. Mee ka eriri ọkụ AC pụọ na ahịrị ọdịyo wee tinye n'ime oghere dị mma. Jikọọ ahịrị ọdịyo na crossover site na iji jacks ntinye kwesịrị ekwesị na ọwa 1 na 2 (maka ọrụ stereo), ma ọ bụ na ọwa 1 naanị (maka ọrụ mono). Jikọọ jacks mmepụta kwesịrị ekwesị maka ụzọ stereo 3, mono 4-way operation (834 naanị), ma ọ bụ stereo 2-way, mono 3-way (835). Akara azụ nke ọma maka njikọ kwesịrị ekwesị. Soro akara elu maka njikọ stereo ma ọ bụ akara ala maka njikọ mono.
All inputs and outputs are balanced. Use XLR type male plugs for inputs and female plugs for outputs. For balanced operation using 1/4″ phone plug con-nectors, use only tip-ring-sleeve (stereo) jacks. For unbalanced operation using 1/4″ phone plug connectors, use only tip-sleeve (mono) jacks.

FOR BALANCED CONNECTION:
Wire XLR connections as follows:

• Pin 2: high
• Pin 3: low
• Pin 1: ground or common

Wire 1/4″ tip-ring-sleeve phone plug connectors as follows:

• Tip: high
• Ring: low
• Aka uwe: ala

FOR UNBALANCED AMPNjikọ LIFIER:
Iji mee njikọ na-enweghị isi na njikọ XLR nke unit ahụ, waya njikọ eriri dị ka ndị a:

• Ntụtụ 2: oke
• Ntụtụ 3: NO CONNECTION
• Ntụtụ 1: ground

Jiri njikọ nkwụnye ekwentị 1/4 inch n'ọnụ ọnụ maka njikọ na ampliifiers, wired dị ka ndị a:

• ndụmọdụ: elu
• sleeve: ala

Mara: The 834 1/4″ jacks may be connected balanced or unbalanced and that the 835 has both balanced and unbalanced outputs. Input impedance is 40K ohms, and output impedance is 102 ohms.
Ozugbo etinyere crossover, gbanwee ma nwalee, enwere ike idobe nchekwa nchekwa nhọrọ n'ihu panel nke unit ahụ iji gbochie tampiri.

MELITE

Consult your speaker and driver manufacturer’s specifications for the recom-mended crossover frequencies. Basic setup procedures for the crossovers are as follows:

• Label each power amplifier for its respective frequency band.
  • 834: LOW, MID, or HIGH for stereo operation; LOW, LOW-MID, HIGH- MID, or HIGH for mono operation.
  • 835: LOW, HIGH for stereo operation or LOW, MID, HIGH for mono operation.
• Set each power amplifier njikwa olu na kacha ma jikọọ ike ọ bụla ampMmepụta nrịbama nye ọkà okwu ma ọ bụ ọkwọ ụgbọ ala ya ziri ezi. Agbanyela IKE AMPNdụ ma.
• Apply power to the crossover.

Arụ ọrụ stereo
Iji akara n'ahịrị elu nke ihu na azụ, tọọ ọwa ọ bụla ka nke a:

• Tọọ the gain control to 0 dB. Set all level controls to -∞ and switch in the 40 Hz high-pass filter if desired (834 only).
• 834 Set the LOW/MID crossover frequency for each channel according to the front panel markings.
• 835 Set the LOW/HIGH crossover frequency for each channel according to the front panel markings.
• 836 If the desired frequency is above 500 Hz, the Range switch must be engaged (LED indicator lit). If the desired frequency is below 500 Hz, the Range switch must be disengaged (LED indicator off).

Mgbe mgba ọkụ nso na-arụ ọrụ, a na-amụba ugboro ugboro akara gburugburu LOW/MID (LOW/HIGH maka 835) njikwa ugboro ugboro site na iri. N'ikwu ya n'ụzọ ọzọ, ọ bụrụ na a na-edozi ugboro ole LOW / MID (LOW / High for 835) na 250 na mgbanwe mgbanwe na-arụ ọrụ, n'ezie crossover ugboro bụ 2.5 kHz.

834: Set the MID/HIGH crossover frequency. The Channel 1 MID/HIGH frequency control has two sets of markings. When using the crossover in stereo mode, use the lower frequency markings to set the MID/HIGH crossover point. This frequency control has no range switch, and in stereo mode extends to 7.5 kHz.

835: Set the LOW/HIGH crossover frequency. This frequency can be varied from 100 Hz to 10 kHz.

• Connect the outputs of the crossover to the appropriate ampndị na-ebuli elu. IKE AMPLIFIERS SHOULD STILL BE UNPOWERED. Check to see that all crossover level controls are set to -∞, and that both gain controls are set to 0 dB. Apply power to the low frequency ampna -emegharị ihe.
• Send a broadband signal into the crossover and slowly bring up the LOW level control. Set the control for the desired level. The gain control can be used to boost the signal if needed.

834: Apply power to the mid frequency amplifier ma tụgharịa njikwa ọkwa MID ka ọ bụrụ ọkwa achọrọ.
834/835: Finally, apply power to the high frequency power amplifier ma weta njikwa ọkwa HIGH na ọkwa achọrọ.

Once the output levels are set, any phase problems can be corrected with the phase inversion switches on the rear panel (834 only). THE PHASE INVER-SION SWITCHES ON THE 834 ARE MECHANICAL SWITCHES AND SHOULD ONLY BE CHANGED WHEN THE POWER AMPLIFIER maka mmepụta ahụ agbanyụrụ. Ịtụgharị njikwa ọkwa na 834 agaghị egbochi ndị na-agafe agafe na-apụta na ntinye mgbe ị na-agbanwe mgbanwe oge mgbe crossover dị. Ndị a na-agafe agafe nwere ike imebi ike amplifiers, speakers,  and drivers.

STEREO OPERATION USING A MONO SUBWOOFER

This mode of operation provides:

• 834: Channel 1 and Channel 2 high frequency outputs, Channel 1 and
  Channel 2 mid frequency outputs, and one summed low frequency output.
• 835: Channels 1 and 2 high frequency outputs and one summed low frequency output.

Usoro ntọlite ​​​​bụ otu ihe ahụ maka ọnọdụ stereo, belụsọ na, kama ijikọ nsonaazụ ugboro abụọ dị ala, jikọọ naanị mpụta Sum Frequency Sum na obere ugboro. amponye ndu. Tọọ njikwa ọkwa LOW abụọ ahụ n'otu ọkwa ahụ iji hụ na njikwa abụọ ahụ na-enye otu akara ngosi na mpụta Sum Frequency Sum.

Mara: that there is no phase inversion switch on the 834 for the Low Frequency Sum output. Any phase problems must be corrected using the phase inversion switches on the other four outputs.

MONO OPERATION
Depress the Stereo/Mono switch (LED indicator lit). When operating the crossover in stereo mode, the MID/HIGH frequency control of the 834 is vari-able from .75 kHz – 7.5 kHz. When operating the crossover in mono mode, the HIGH-MID/HIGH frequency control range is from 2 kHz – 20 kHz.
Usoro nhazi ọnọdụ mono bụ otu maka ọnọdụ stereo, belụsọ na a ga-agbaso ahịrị ala nke akara n'ihu na azụ kama ịnọ n'ahịrị dị elu. Jide n'aka na amplifiers are off, that the gain control is set to 0 dB, and that the level control is set to -∞ before proceeding to adjust the crossover frequencies and levels. The Low Frequency Sum output is not usable in the mono mode.

834 Nkọwapụta

• Crossover type: Stereo 3-way, Mono 4-way.
• I/O Connectors: 834: 1/4″ tip-ring-sleeve phone jacks for balanced/unbalanced connections.
• 834 XLR: Inputs: balanced female XLR, Outputs: balanced male XLR.
• THD+Noise: Less than 0.006%.
• Signal-To-Noise Ratio: Greater than -90 dB
• Filter Type: 18 dB/octave Butterworth state-variable filters.
• Crossover Frequencies – Stereo: LOW/MID: 50 Hz to 5 kHz in two ranges,
• MID/HIGH: 750 Hz to 7.5 kHz. – Mono: LOW/LOW-MID: 50 Hz to 5 kHz in two ranges, LOW-MID/HIGH-MID: 50 Hz to 5 kHz in two ranges, HIGH-MID/HIGH: 2 kHz to 20 kHz.
• Input Impedance: 20 k ½ unbalanced, 40 K ½ balanced.
• Maximum Input Level: +21 dBu (ref.: 0.775 Vrms).
• Output Impedance: 102 ½..
• Maximum Output Level: +21 dBu (ref.: 0.775 Vrms).

835 Nkọwapụta

• Crossover type: Stereo 2-way, Mono 3-way.
• I/O Connectors: 835: Inputs: 1/4″ tip-ring-sleeve phone jacks for balanced/unbalanced connections. Outputs: 1/4″ tip-ring-sleeve phone jacks for balanced connections and 1/4″ tip-sleeve phone jacks for unbalanced connections.
• 835 XLR: Inputs: balanced female XLR, Outputs: balanced male XLR.
• THD+Noise: Less than 0.006%.
• Signal-To-Noise Ratio: Greater than -90 dB
• Filter Type: 18 dB/octave Butterworth state-variable filters.
• Crossover Frequencies –
• Stereo: LOW/HIGH: 100 Hz to 10 kHz in two ranges. –
• Mono: LOW/MID 100 Hz to 10 kHz in two ranges. MID/HIGH 100 Hz to 10
• kHz in two ranges.
• Input Impedance: 20 k ½ unbalanced, 40 K ½ balanced.
• Maximum Input Level: +21 dBu (ref.: 0.775 Vrms).
• Output Impedance: 102 ½..
• Maximum Output Level: +21 dBu (ref.: 0.775 Vrms).

844 SERIES II

Okwu mmalite
The DOD 844 Series II Quad Noise Gate consists of 4 independent noise gates in a single rack space unit. Threshold, release time, and attenuation (0 dB to 90 dB) for each gate are user controllable. Special features include a Key input for gating, or “keying”, from a signal other than the input. A control out-put is also provided for triggering other devices with a 5 volt pulse from the selected channel when the input for that channel rises above the threshold. Monitoring the operation of the 844 is made simple with front panel LEDs that indicate the operating status of each channel (lit when input signal is being gated).

Ịwụnye
Install the 844 in a rack with the provided rack screws. Route the AC cord away from audio lines to a convenient outlet. Connections to the input and output jacks are made using balanced tip-ring-sleeve or unbalanced 1/4″ tip-sleeve phone plugs.
FOR BALANCED CONNECTION: wire the plug as follows:

• Tip: high.
• Ring: low.
• Sleeve: ground.

FOR UNBALANCED CONNECTION: wire the plug as follows:

• Ndụmọdụ: elu.
• Aka uwe: ala

A na-eme njikọ na ntinye igodo ahụ site na iji plọg ekwentị mono 1/4 ″ maka njikọ na-ezighi ezi dịka egosiri n'elu.
A na-eme njikọ na mmepụta njikwa site na iji plọg ekwentị mono 1/4 ″ maka njikọ na-ezighi ezi dịka ọ dị na mbụ. Nke a abụghị mmepụta ọdịyo.

Ngwa
The 844 Series II Quad Noise Gate can be used in a variety of situations. The  most typical use is a standard noise gate. With the Key Source switch set to INT and the Attenuation control set to 90 dB, the unit will attenuate the input signal when its level falls below the threshold level. The release control (fade time) can be set to begin the attenuation very slowly or very quickly as desired.
Isi ihe eji gating bụ iwepụ mkpọtụ mgbe akara ngosi achọrọ adịghị. Ngwa a na-ahụkarị bụ ịgbanye ịgbà ịgba n'ime ngwa mic'ed drum. Gating ga-ewepụ mkpọtụ pedal tupu a tụọ egwu. Ngwa a bụ wired dị ka ndị a:

• Jikọọ tupuampMmepụta igwe okwu dị elu na ntinye 844, wee jikọọ mmepụta nke 844 na ntinye nke igwekota.
• Set the Attenuation to 90 dB and set the threshold so that the gate only opens when the drum is struck. Less attenuation may be needed if the effect of the gate is too noticeable.
• Switch the Key Source control to Ext. The detector will now ignore the high frequency signals (in this case, the cymbals), and will allow the drum signal though only when the drum is struck.
• Enwere ike iji igodo mee ihe karịa iwepu mkpọtụ. Ọ bụrụ na ejikọrọ igwe drum na ntinye igodo, mgbaama dị na ntinye ọwa ga-emekọrịta na mgbama igwe drum.

Maka example, if the signal appearing at the channel input of the gate is a sus-tained guitar chord, the resulting output would be the chord sound “played” to the rhythm of the drum machine. Using this technique can produce some interesting results. Try using different Key sources to trigger the gate. You may find something you like.
The Control output is a unique feature of the 844 Series II. This output can be used to trigger a drum machine or sequencer in time with whatever is input into either the channel input or the Key input, offering a quick means of syn-chronizing other equipment to the input.

Nkọwapụta

• Number Of Channels: 4.
• Frequency Response: 10 Hz-30 kHz, ±0.5 dB
• THD+Noise: 0.06%
• Signal-To-Noise Ratio: -97 dB (ref.: 0.775 Vrms)
• Input Impedance: 20 kΩ unbalanced, 40 kΩ balanced
• Maximum Input Level: +21 dBu (ref.: 0.775 Vrms)
• Output Impedance: 102 Ω balanced, 51 Ω unbalanced
• Ọkwa mmepụta kachasị: +21 dBu
• Key Input Impedance: 30 kΩ
• Key Input Maximum Level: +21 dBu (ref.: 0.775 Vrms)
• Threshold: Adjustable from -60 dBu to +10 dBu
• Attenuation: Adjustable from 0 dB to 90 dB
• Release Time: Adjustable from 20 msec. to 5 sec.

866 SERIES II GATED

COMPRESSOR/LIMITER

Okwu mmalite
DOD 866 Series II bụ stereo gated compressor / limiter nke enwere ike ịrụ ọrụ dị ka kọmpụta / ihe mgbochi abụọ nwere onwe ha ma ọ bụ dị ka otu stereo unit. Usoro 866 nke Abụọ na-agụnye njirimara "ikpere dị nro" na omume mkpakọ ya iji nye ụda eke n'okpuru ọnọdụ mbelata uru. E gosipụtara na 866 bụ ọnụ ụzọ mkpọtụ iji hụ na arụ ọrụ dị jụụ mgbe mgbaàmà adịghị. Niile arụ ọrụ dị oke mkpa bụ mgbanwe, na-enye ohere mgbanwe kachasị n'ọtụtụ ngwa ngwa. Agbanyeghị na ịhọrọ iji ya, emebere 866 ka ọ bụrụ ngwa ọdịyo dị ọnụ ala maka ndị na-egwu egwu, ndị otu na-eme ihe, na obere ụlọ ndekọ ndekọ nke pere mpe.

Ịwụnye
Wụnye 866 n'ime akwa akwa site na iji skru ndị enyere. Mee ka eriri ọkụ pụọ na ahịrị ọdịyo wee tinye n'ime oghere dị mma. Jikọọ ahịrị ọdịyo na jakị A na B kwesịrị ekwesị na kọmpat.
Maka njikọ ziri ezi: Jiri 1/4 ″ plọgụ ekwentị n'ọnụ mgbanaka, wired dị ka ndị a:

• tip: high
• ring: low
• sleeve: ground

Maka njikọ na-enweghị nha nha: jiri ma ọ bụ 1/4 inch plọg ekwentị mono ma ọ bụ plọg phono RCA, wired dị ka ndị a:

• tip: hot
• sleeve: low

Njikwa na ọrụ ha bụ ndị a:

• Ọnụ ụzọ ámá: The Gate Threshold controls the level at which the 866 will allow the input signal through to the compressor section of the unit. If the signal level is below the threshold, no signal is allowed to pass. The red LED  will light whenever the signal is being gated. To disable the gating action, set the Gate Threshold control to the full counter-clockwise position (the gate control is fully independent of all other controls on the 866).
• Ntinye Gain: The Input Gain control allows you to adjust the signal level to the compressor. This control directly affects the setting of the Gate Threshold control and the Compressor Threshold control, and is active even when the Compress switch is in the out position. With the Input Gain control set to 0 dB, over 20 dB of headroom is available to the compressor.
• Compressor Threshold: This control sets the level at which the compressor begins to act. The Input Gain control affects the Compressor Threshold set-ting by changing the overall level that the compressor sees. When used in combination with the Input Gain control, the Compressor Threshold control can be adjusted to accommodate a wide range of signal levels.
• Oke: Determines the amount, or ratio, of compression applied to the incom-ing signal. A ratio of 1:1 means that no compression is applied; a ratio of less than 10:1 is generally considered compression; a ratio of more than 10:1 is generally considered limiting; a ratio of ∞:1 allows no signal above the Compressor Threshold level setting.
• Mwakpo: This control adjusts the speed with which the compressor reacts to an increase in input signal level above the threshold. Shorter attack time set-tings will cause the compressor to react more quickly to transients, giving an added measure of protection to sensitive equipment. Longer attack times allow more of the transient to pass, yielding a more natural sound while still compressing the dynamic range of the signal.
• Hapụ: The Release control adjusts the speed with which the compressor reacts to a decrease in input signal level above the threshold. Faster release time settings can cause a sudden increase in noise on peaks for some pro-gram material as the compressor lets go. This effects is known as “breath-ing”. Increasing the Release time setting will help minimize breathing.
• Mpụta Gain: Determines the output level of the compressor. This is useful when making up for gain lost in the compression process. The output level is active only when the Compress switch is depressed.
  Mbelata uru: Eserese mmanya akụkụ isii a na-egosi ọnụọgụ mbelata uru site na compressor. Ọ na-arụ ọrụ ọbụlagodi mgbe mgba ọkụ Compress nọ na ọnọdụ dịpụrụ adịpụ ka onye ọrụ wee nwee ike ibu ụzọview omume nke 866 tupu etinye ya n'ime ụzọ mgbaàmà.
• Compress: The compress switch activates the compressor when depressed.
• Njikọ Stereo: Depressing the Stereo Link switch links the two compressor channels for stereo operation. In stereo mode, the compressor will react to either channel, while reducing gain in both channels. Both channels of the 866 are identical in control and function EXCEPT when placed in the stereo mode. In stereo mode, the channel 1 controls become the master controls for both channels, while the Input Gain controls remain independent for each channel.

Ntinye na ntinye aka n'azụ na ọrụ ha bụ ndị a:

• Ntinye: The inputs of the 866 will accept line level signals, either balanced or unbalanced. A 1/4″ tip-ring-sleeve phone jack and an RCA phono jack are pro-vided for each input. Using the 1/4″ input jack disconnects the RCA input jack.
• Mpụta: The outputs of the 866 will drive either balanced or unbalanced lines. A 1/4″ tip-ring-sleeve phone jack and an RCA phono jack are provided for each output. Both the 1/4″ phone jacks and the RCA jacks may be used at the same time.
• Ntinye yinye akụkụ: Allows access to the signal detector circuit of the com-pressor, permitting control of the compressor with another signal for such applications as “ducking”. When used with the Side Chain Output, the original input signal can be modified for applications such as “deessing”. Inserting a plug into this jack opens the internal side chain path so that the detector will only respond to the signal at this jack. In the stereo mode, both channels of the compressor react as one.
• Side Chain Output: The Side Chain Output is the buffered output normally fed to the detector. It is used in conjunction with the Side Chain Input to modify the detector signal for special applications such as “ducking” and “deessing”. For these applications, the Side Chain Output signal is sent to a signal processor and returned through the Side Chain Input.

Ngwa
Mgbanwe nke 866 na-enye ya ohere ịrụ ọtụtụ ọrụ nhazi mgbaàmà na nha nhata na nghọta. Nke a bụ echiche ole na ole dị mkpa ịghọta tupu iji 866.
Abụọ n'ime ngwa ndị a na-ahụkarị maka 866 bụ mkpakọ dị mfe na mmachi. A na-eme mkpakọ na mmachi n'otu ụzọ ahụ, yana ọdịiche abụọ dị mkpa: ọkwa Compressor Threshold na nhazi nhazi maka mkpakọ na-adịkarị ala karịa maka ịmachi.

The Compressor Threshold controls the point above which the compressor begins to reduce the gain. For compression, the Compressor Threshold is set low, so that even low level signal will activate the compression. For limiting, the Compressor Threshold is set high so that all of the dynamics of the signal are preserved, but extremely high levels are reduced to protect amplifers, ọkà okwu, ma ọ bụ igbochi teepu saturation. N'ime ngwa a, ihe nchọta na-eleghara mgbanwe ọkwa mgbaama n'okpuru ọnụ ụzọ.

The 866 features a “soft knee” compression curve for more natural sounding compression. This means that as the signal level approaches the threshold setting, the compressor starts to react. The ratio, or slope, of the gain reduction continues to increase gradually as the signal passes above the threshold until it reaches the final gain slope set by the Ratio control. This feature makes the compressor’s operation less obtursive by easing into full com-pression. As you increase the compression Ratio, the “knee” gets sharper, and the gain reduction increases more rapidly with increased signal. Protective limiting requires a high compression Ratio setting, so that full compression is reached quickly.
The time it takes for the detector to react to an increase in signal level is deter-mined by the Attack control setting. To preserve some of the transient punch of a signal, the Attack time should be set fairly high. This allows the user to compress the overall dynamic range of a signal while still preserving the natural, open feel of the sound. For limiting, the Attack time should be short, so that potentially damaging transients don’t get past the limiting protection of the compressor.

Release time is the opposite of attack time. The Release time setting deter-mines the amount of time the detector takes to react to a decrease in signal level and to release the action of the compression. Faster release times will help preserve the original dynamics of the signal, but may cause a problem in some program material. This effect is called “pumping” or “breathing” . As the compressor lets go of the signal, the level of the signal (and the noise floor) is allowed to rise. When the next transient hits, the signal level is pushed down again according to the Attack time setting. Breathing can be minimized using longer Release times, which smooth out the action of the compressor.
Once a signal has crossed the threshold, the compressor must be told how much to reduce the gain. The Ratio control determines the amount of gain reduction, expressed as a ratio, adjustable from 1:1 (no gain reduction) to ∞:1 (the signal is not allowed to rise above the Threshold level). Compression ratios express the ratio between the input signal level and the desired output level. A compression ratio of 2:1 means that for an increase of 2dB above the threshold input signal, the compressor output will rise only 1 dB. At a ratio of 5:1, an input increase of 5dB above the threshold will yield an output increase of 1 dB, and so forth. The setting of the Ratio control is dependent upon the  application in which the compressor is to be used.

Hiss and signal processor idling noise are common sound reinforcement problems. The more signal processors there are in line with the program material, the more noise is produced at the final output stage. For this rea- son DOD has incorporated a noise gate in the 866. A gate acts like a compressor in reverse. When a signal crosses the gate threshold, it is allowed to pass unaffected. When the signal level falls below the gate threshold level,  the signal gain is attenuated, effectively shutting it off. The Gate Threshold control of the 866 allows the user to adjust the threshold level of the noise gate. When the control is in the fully counter clockwise position, the noise gate is inactive and all signals will pass through.
The Output Gain control allows the user to make up for gain lost in the com-pression process and to set the output level of the compressor for compatibility with other equipment.
Nke a bụ ntọala compressor ole na ole nwere ike bụrụ mmalite maka ngwa ndị ekpuchiri elu ruo ebe a:

Vocal Compression:

• Compressor Threshold: low
• Oke: 5:1
• Attack: 10 msec
• Release: 200 msec

Guitar Compression for Extra Sustain:

• Compressor Threshold: low
• Oke: 15:1
• Attack: .5 msec
• Release: 500 msec

Protective Limiting:

• Compressor Threshold: high
• Ratio: °:1
• Attack: 0.1 msec
• Release: 90 msec

Maka ozi ndị ọzọ gbasara compressors na ngwa, lelee Yamaha Sound Reinforcement Handbook (Hal Leonard Publishing, #HL 00500964). Akwụkwọ a bụ ngwá ọrụ bara uru maka ndị mbido na ndị agha ochie, ma nwee ọtụtụ ozi gbasara usoro nkwalite ụda na ngwa bara uru.

Arụ ọrụ stereo

Ịmechi akara ngosi abụọ (stereo) na compressors abụọ nwere onwe ha na-emepụta nsogbu: ọ bụrụ na otu ọwa na-agbanye karịa nke ọzọ, ihe oyiyi stereo ga-agbanwe n'otu akụkụ, na-eme ka enweghị aha na mpaghara ụda stereo a ghọtara. Iji gbochie ngbanwe, DOD etinyela ihe ntụgharị Stereo Link na 866. Mgbanwe a na-enye ohere ka ọwa abụọ ahụ soro n'otu zuru oke mgbe ndị nchọpụta maka ọwa ọ bụla na-arụ ọrụ onwe ha. Mgbe njikọ njikọ ahụ dara mbà n'obi, a na-ejikọta ndị nchọpụta ọnụ na ọwa abụọ na-emeghachi omume na elu nke akara ngosi abụọ ahụ. Nke a na-ewepụ nkwụsị ọwa, ma chekwaa ihe oyiyi stereo.

Ngwa Pụrụ Iche
The uses for a compressor don’t end with compression and protective limit-ing. Applications such as “ducking”, “deessing”, and “de-thumping” can be achieved with equal ease, and their uses are many.
866 ahụ na-enye ntinye na ihe mmepụta nke Side Chain, nke na-enye ohere ịnweta sekit ihe nchọpụta ọwa ọ bụla. Ebe ọ bụ na ndị nchọpụta na-achịkwa VCA mkpakọ (voltage-achịkwa amplifier), onye nwere ike iji akara ngosi na-enweghị njikọ zuru oke jikwaa ihe mmemme. A na-eme nke a site na ịtinye akara njikwa n'ime ntinye n'akụkụ akụkụ.
Ducking bụ ezigbo example nke ụdị ngwa a. Inye mmiri bụ naanị ibelata mgbaàmà mgbe onye ọzọ nọ. A na-eji usoro a eme ihe n'ọtụtụ ebe na mgbasa ozi egwuregwu iji belata ọkwa nke igwe mmadụ mgbe onye mgbasa ozi na-ekwu okwu. Ihe mbuamplified voice of the announcer is sent to a side chain input to compress the noise of the crowd. The voice and crowd signals are then mixed together. For this type of application, the com-pression ratio is kept fairly low with long attack and release times.

The Side Chain output is provided so that the controlling signal (not the pro-gram material) may be modified before reaching the detectors.
The most common use of this technique is for deessing. A d-esser reduces the high frequency sibilance in the “s”s and “t”s of speech to prevent tape saturation or high frequency driver damage. Connect the Side Chain Output to an equalizer whose output is connected to the Side Chain Input of the 866.
The areas where most of the “ess” energy is located are between 2.5 kHz and 10 kHz. If these areas are boosted on the equalizer, the gain of the program material will be reduced more by the compressor because of the excess gain  in that frequency range, thus reducing the sibilance of the program material. Attack and Release times should be set fairly short, and the compression ratio should be below 8:1.

Nkọwapụta

• Frequency Response: 10 Hz – 30 kHz, ±0.5 dB.
• THD+Noise: 0.06%.
• Signal-To-Noise Ratio: -97 dB.
• Input Impedance: 20 K½ unbalanced, 40k½ balanced.
• Maximum Input Level: +21 dBu (ref.:0.775 Vrms).
• Output Impedance: 51½ unbalanced, 102½ balanced.
• Maximum Output Level: +21 dBu (ref.: 0.775 Vrms).
• Side Chain Input Impedance: 10 k½.
• Side Chain Maximum Input Level: +21 dBu (ref.: 0.775 rms).
• Side Chain Output Impedance: 51½ unbalanced, 102½ balanced.
• Side Chain Maximum Output Level: +21 dBu (ref.: 0.775 Vrms).
• Gate Threshold: Adjustable from -55 dBu to -10 dBu.

Ụlọ ọrụ DOD ELECTRONICS CORP

• 8760 South Sandy Parkway
• SANDY, UTAH 84070
• Nkesa mba ụwa
• 3 OVERLOOK DR. UNIT 4
• AMHERST, NEW HAMPSHIRE 03031
• USA
• FAX 603-672-4246
• DOD bụ akara ụghalaahịa nke
• DOD ELECTRONICS
• © 1994 DOD ELECTRONICS
• CORPORATION
• E E E E ebipụtara na USA 2/94
• Emepụtara na USA
• DOD 18-0121-B

FAQ 

Can I service the unit myself if needed?

No, it is recommended to refer all servicing to qualified personnel to avoid risks.

Kedu ihe m ga-eme ma ọ bụrụ na mmiri wụsara na unit ahụ?

Shut off the unit immediately and take it to a dealer for service.

What should I do in case of a mains plug damage?

Do not use a damaged mains plug and seek approved replacement fuses from your local retailer.

Akwụkwọ / akụrụngwa

Ndị nrụpụta mgbama DigiTech RTA Series II [pdf] Akwụkwọ ntuziaka Usoro RTA II, 834-835 Series II, 844 Series II, 866 Series II, RTA Series II Ndị na-ahụ maka mgbama, Ndị nrụpụta mgbaama, Ndị nrụpụta

Ntụaka

• Akwụkwọ ntuziaka onye ọrụ