Klipsch SUB-120

Klipsch Synergy Black Label Sub-120 Subwoofer Instruction Manual

1. Okwu mmalite

This manual provides essential information for the proper installation, operation, and maintenance of your Klipsch Synergy Black Label Sub-120 front-firing 12” subwoofer. Designed to deliver powerful bass, this subwoofer features 200 watts of continuous power and 400 watts of dynamic power, driven by an all-digital amplifier for accurate sound reproduction. It is compatible with most AV receivers, enhancing any home theater setup with deep, thundering bass.

Klipsch Synergy Black Label Sub-120 Subwoofer, front view with copper cone visible

Figure 1: Klipsch Synergy Black Label Sub-120 Subwoofer, showcasing its front-firing design and distinctive copper cone.

Klipsch Synergy Black Label Sub-120 Subwoofer with grille attached

Figure 2: Klipsch Synergy Black Label Sub-120 Subwoofer with its strong, flexible, and removable grille in place.

2. Ozi nchekwa dị mkpa

Please read all safety instructions before operating this product. Keep this manual for future reference. Adhere to all warnings on the product and in the operating instructions.

  • Isi mmalite ike: Only connect the subwoofer to a power supply of the type described in the operating instructions or as marked on the appliance.
  • Igwe ikuku: Ensure proper ventilation. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
  • Okpomọkụ: Awụnyela n'akụkụ ebe okpomọkụ ọ bụla dị ka radiators, ndekọ okpomọkụ, stovu, ma ọ bụ ngwa ndị ọzọ (gụnyere amplifiers) nke na-emepụta okpomọkụ.
  • Mmiri na mmiri: Do not use this apparatus near water or in excessively humid environments.
  • Nhicha: Jiri akwa kpọrọ nkụ hichaa naanị.
  • Ije ozi: Anwala ịnye ngwaahịa a n'onwe gị. Tụtụ aka n'aka ndị ọrụ ruru eru.

3. Kedu ihe dị na Igbe ahụ

Mgbe ebupuchara, biko chọpụta na agụnyere ihe niile ndị a:

  • Klipsch Synergy Black Label Sub-120 Subwoofer
  • Ụdọ ọkụ
  • Akwụkwọ ntuziaka (akwụkwọ a)

Note: Connection wires (e.g., RCA cables) are not included and must be purchased separately.

4. Nhazi

4.1 Ntinye Subwoofer

For optimal performance and bass response, it is recommended to place your Klipsch Sub-120 subwoofer in a corner of the room. Corner placement utilizes the room's acoustics to enhance bass output and provide a more immersive audio experience.

4.2 Njikọ

The Klipsch Sub-120 offers flexible connection options to integrate with almost any AV receiver or stereo system.

  • Ntinye LFE (Mmetụta Ugboro Dị Ala): For receivers with a dedicated subwoofer output (LFE or SUB OUT), connect a single RCA cable from the receiver's subwoofer output to the LFE input on the subwoofer. This is the recommended connection for home theater systems.
  • Line In (Stereo RCA Inputs): If your receiver does not have an LFE output, connect stereo RCA cables from your receiver's pre-out (left and right) to the corresponding Line In (L/R) inputs on the subwoofer.
Close-up of the Klipsch Sub-120 back panel showing Line In and LFE inputs

Ọgụgụ 3: Zuru ezu view of the Line In and LFE input connections on the subwoofer's rear panel.

4.3 Njikọ ike

Once audio connections are made, connect the provided power cord to the subwoofer's power input and then to a suitable wall outlet (100-240V, 50/60Hz 2A).

5. Na-arụ ọrụ Subwoofer

The Klipsch Sub-120 features several controls on its rear panel to fine-tune its performance to your listening environment and preferences.

Klipsch Sub-120 back panel showing all controls and connections

Figure 4: Rear panel of the Klipsch Sub-120, illustrating the location of all controls and inputs.

5.1 Na-achịkwaview

  • GAIN (Volume) Control: Na-agbanwe ọkwa mmepụta nke subwoofer niile. Malite na ntọala dị ala ma jiri nwayọ mụbaa ruo mgbe bass ahụ ga-agwakọta nke ọma na isi okwu gị.
  • LOW-PASS (Crossover) Control: This knob sets the upper frequency limit for the subwoofer. Frequencies above this setting will not be reproduced by the subwoofer. Adjust this to match the low-frequency capabilities of your main speakers. A common starting point is 80Hz, but it can be adjusted between 40Hz and 120Hz.
  • PHASE Switch (0°/180°): This switch adjusts the phase of the subwoofer's output relative to your main speakers. Experiment with both settings to find the one that provides the most impactful and coherent bass response in your listening position.
  • ON/AUTO/OFF Switch:
    • NA: The subwoofer remains continuously powered on.
    • UTgbọala: The subwoofer automatically turns on when an audio signal is detected and enters standby mode after a period of inactivity.
    • Gbanyụọ: The subwoofer is powered off.

6. Nlekọta

To ensure the longevity and optimal performance of your Klipsch Sub-120 subwoofer, follow these simple maintenance guidelines:

  • Nhicha: Use a dry, soft cloth to wipe down the cabinet. Avoid using harsh chemicals, solvents, or abrasive cleaners, as these can damage the finish.
  • Nlekọta Grille: The subwoofer features a removable grille. If cleaning is necessary, gently remove the grille and use a soft brush or vacuum cleaner with a brush attachment to remove dust.
  • Igwe ikuku: Periodically check that the ventilation openings are clear of dust and debris to prevent overheating.
  • Nchekwa: If storing the subwoofer for an extended period, disconnect it from power and store it in a cool, dry place, preferably in its original packaging.

7. Nchọpụta nsogbu

If you encounter issues with your Klipsch Sub-120 subwoofer, refer to the following common problems and solutions:

NsogbuIhe nwere ike imeNgwọta
Enweghị ụda sitere na Subwoofer
  • Ejikọtaghị eriri ọkụ ma ọ bụ ọpụpụ adịghị arụ ọrụ.
  • Subwoofer is in OFF mode or AUTO mode without signal.
  • Ejikọghị eriri ọdịyo ma ọ bụ nwee nsogbu.
  • Receiver's subwoofer output is disabled or volume is too low.
  • Check power connections and wall outlet.
  • Set ON/AUTO/OFF switch to ON or ensure audio signal is present for AUTO mode.
  • Verify audio cable connections; try a different cable.
  • Check receiver settings for subwoofer output and volume.
Distorted or Unclear Bass
  • GAIN (volume) set too high.
  • LOW-PASS (crossover) set incorrectly.
  • Ntọala oge ezighi ezi.
  • Subwoofer placement issues.
  • Reduce the GAIN control on the subwoofer.
  • Adjust the LOW-PASS control to blend with main speakers.
  • Toggle the PHASE switch (0°/180°) to find the best sound.
  • Nnwale na ntinye subwoofer dị iche iche.
Subwoofer Not Turning On Automatically
  • ON/AUTO/OFF switch not set to AUTO.
  • Input signal too low to trigger auto-on.
  • Hụ na agbanweela mgbanwe ahụ ka ọ bụrụ AUTO.
  • Increase the output level from your receiver's subwoofer output.

8. Nkọwapụta

Detailed technical specifications for the Klipsch Synergy Black Label Sub-120 Subwoofer:

NjirimaraNkọwa
Aha NlereanyaSUB-120
Ụdị Ọkà OkwuSubwoofer
Dayameta nke subwoofer12 sentimita asatọ
Ụdị WooferSpun copper front-firing Cerametallic woofers
Ike na-aga n'ihu200 Watt
Ike dị omimi400 Watt
AmpỤdị lifierDijitalụ Ampna -emegharị ihe
Nzaghachi ugboro ugboroUp to 20 KHz (adjustable via Low-Pass filter)
Teknụzụ NjikọtaWired (RCA Line In/LFE)
Usoro njikwaManual (Gain, Low-Pass, Phase, Power)
Akụkụ ngwaahịa (D x W x H)19.25" x 14" x 16"
Ibu Ibu36.4 pound
AgbaNwa
Ihe onwunweWood cabinet, Copper woofer
Isi Iyi IkeIgwe ọkụ eletrik
Eji akwadoroHome Theater, Televisions, Gaming Consoles, Streaming Devices
Diagram showing the dimensions of the Klipsch Sub-120 Subwoofer: 16 inches H, 14 inches W, 19.25 inches D

Figure 5: Dimensions of the Klipsch Synergy Black Label Sub-120 Subwoofer.

9. Akwụkwọ ikike na nkwado

9.1 Ozi akwụkwọ ikike

The Klipsch Synergy Black Label Sub-120 Subwoofer comes with a Akwụkwọ ikike nwere oke. For specific terms, conditions, and duration of the warranty, please refer to the warranty card included with your product or visit the official Klipsch websaịtị.

9.2 Nkwado ndị ahịa

For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Klipsch Customer Support. Contact information can typically be found on the Klipsch official websaịtị ma ọ bụ na nkwakọ ngwaahịa.

Akụrụngwa dị n'ịntanetị: Visit the official Klipsch websaịtị maka Ajụjụ Ndị A Na-ajụkarị, ndebanye aha ngwaahịa, na akụrụngwa nkwado ndị ọzọ.

© 2026 Klipsch. All rights reserved.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.