1. Okwu mmalite
Thank you for choosing the ESX QL750.1 Quantum Monobloc Digital Amplifier. This high-performance 24V amplifier is designed to deliver powerful and clear audio for your vehicle's sound system, particularly suited for 24V truck and commercial vehicle applications. This manual provides essential information for proper installation, operation, and maintenance to ensure optimal performance and longevity of your ampna -emegharị ihe.
2. Ntuziaka nchekwa
Please read these safety instructions carefully before installing and operating the amplifier. Failure to follow these guidelines may result in injury, damage to the amplifier, or damage to your vehicle.
- Ịnye ọkụ: Nke a amplifier is designed for 24V DC vehicle electrical systems only. Do not attempt to connect it to a 12V system or any other voltage.
- Nwụnye ọkachamara: Installation should ideally be performed by a qualified professional to prevent damage to the amplifier ma ọ bụ ụgbọ ala.
- Wiring: Ensure all wiring is correctly routed and secured to prevent shorts, pinching, or damage. Use appropriate gauge wires for power and ground connections.
- Igwe ikuku: Ugwu ahụ amplifier in a location that allows for adequate airflow to prevent overheating. Do not cover the amplifier or block its cooling fins.
- Mmiri: Debe ihe amplifier away from moisture, water, and excessive humidity.
- Fuuz: Always use the correct fuse rating as specified in the installation section. Never replace a fuse with one of a higher rating.
- Ịkwụsị batrị: Kwụpụ batrị ụgbọ ala tupu ịmalite ọrụ eletrik ọ bụla iji gbochie sekit dị mkpirikpi.
3. Ihe ngwugwu
Please check the contents of your amplifier package. If any items are missing or damaged, contact your dealer immediately.
- ESX QL750.1 Monobloc Digital Ampna -emegharị ihe
- Remote Bass Control Unit
- Ịkwanye kposara
- Akwụkwọ ntuziaka (akwụkwọ a)
4. Akụrụngwa Ngwaahịa
The ESX QL750.1 amplifier boasts a range of features designed for superior audio performance and ease of integration:
- Monobloc 1-channel ampnhazi nhazi
- Klas Dijitalụ D amplification for high efficiency
- Subsonic filter: 10 - 40 Hz
- Low Pass Filter (LPF): 40 - 150 Hz
- Bass Boost: Up to 18 dB at 40 Hz
- Phase Shift: 0-180° adjustable
- High-level input with Autosense / Auto-Turn-On function
- Compatible with Start/Stop vehicle systems
- Line output for daisy-chaining multiple ampndị na -enye ndụ
- Remote bass control included
- Oke arụmọrụ: 92%
5. Amplifier Layout and Connections
Mara onwe gị na nke ahụ amplifier's layout and connection terminals before proceeding with installation.

Foto 5.1: Ogwe azụ view of the ESX QL750.1 amplifier, highlighting power input, signal inputs (RCA and high-level), output, and various control knobs.
5.1. Power Input Terminals
- GND (Ala): Jikọọ na elu ígwè dị ọcha, nke a na-eseghị agba nke chassis ụgbọala ahụ.
- REM (Ebe dị anya): Connect to the remote turn-on output of your head unit or a switched 24V source.
- +24V (Ike): Connect directly to the positive terminal of the vehicle's 24V battery via an appropriate fuse holder.
5.2. Signal Input Terminals
- INPUT (RCA): Low-level RCA inputs for connecting to your head unit's RCA pre-outs.
- Ntinye Ọkwa Elu: For connecting to your head unit's speaker outputs if RCA pre-outs are not available.
5.3. Ọnụ ahịa mmepụta
- OUTPUT (RCA): Line output for connecting to another ampn'ime multi-ampnhazi ọkwa.
- Mpụta Ọkà Okwu: Connect your subwoofer(s) to these terminals. Observe correct polarity.
5.4. Control Knobs and Switches
- LEVEL INPUT (MIN/MAX): Na-agbanwe mmetụta ntinye ka ọ dabara na mmepụta nke isi unit gị.
- SUB SONIC (10Hz-40Hz): Filters out ultra-low frequencies below the audible range, protecting your subwoofer.
- LOW PASS (40Hz-150Hz): Sets the upper frequency limit for the subwoofer.
- BASS BOOST (0dB-18dB): Increases bass output at 40Hz. Use sparingly to avoid distortion.
- PHASE SHIFT (0°-180°): Adjusts the phase of the subwoofer output to match other speakers in the system.
- AUTO TURN-ON (DC/VOX/OFF): Họrọ nke amplifier's turn-on method when using high-level input.
- DC: Detects DC offset from the head unit's speaker output.
- VOX: Detects audio signal from the head unit's speaker output.
- Gbanyụọ: Disables auto turn-on; requires REM connection.
6. Ntọala na nwụnye
Ntinye kwesịrị ekwesị dị oke mkpa maka arụmọrụ na nchekwa nke ngwaọrụ gị amponye na-ebuli ihe. Soro usoro ndị a nke ọma.
6.1. Ịwụnye Ampna -emegharị ihe
- Họrọ ebe kpọrọ nkụ, ikuku na-abata nke ọma, ebe anwụ na-anaghị apụta kpọmkwem na ebe okpomọkụ na-esi apụta.
- Ensure there is sufficient space around the amplifier for airflow, especially around the cooling fins.
- Jiri skru ndị enyere iji chekwaa ike ha amplifier firmly to a solid surface in your vehicle.
6.2. Power Wiring (24V System)
- Kwupu batrị: Before making any power connections, disconnect the negative terminal of your vehicle's 24V battery.
- Power Cable (+24V): Run a heavy-gauge power cable (e.g., 8 AWG or thicker, depending on cable length and power requirements) from the positive terminal of the 24V battery to the amplifier's "+24V" terminal. Install an appropriate fuse holder (e.g., 40A-60A, refer to amplifier specifications for exact rating) within 18 inches (45 cm) of the battery.
- Ground Cable (GND): Run a heavy-gauge ground cable (same gauge as power cable) from the amplifier's "GND" terminal to a clean, unpainted metal part of the vehicle chassis. Ensure a good electrical connection.
- Remote Turn-On Cable (REM): Run a smaller gauge wire (e.g., 18 AWG) from your head unit's remote turn-on output (usually blue/white wire) to the amplifier's "REM" terminal. If using high-level input with auto turn-on, this connection may not be necessary.
6.3. Signal Input Connection
- Ntinye RCA: Connect RCA cables from your head unit's subwoofer pre-out (or full-range pre-out if no dedicated sub-out) to the amplifier's "INPUT" RCA jacks.
- Ntinye Ọkwa dị elu: If your head unit does not have RCA outputs, connect the speaker wires from your head unit to the amplifier's "HIGH LEVEL INPUT" connector. Ensure correct polarity. Set the "AUTO TURN-ON" switch to "DC" or "VOX" as appropriate.
6.4. Njikọ mmepụta okwu
- Connect your subwoofer(s) to the "SPEAKER OUTPUT" terminals. Ensure correct polarity (+ to + and - to -).
- Verify the impedance of your subwoofer(s) to ensure it is within the amplifier's supported range (e.g., 1 Ohm stable).
6.5. Ike Mmalite
- Lelee njikọ niile ugboro abụọ maka izi ezi na nchekwa.
- Jikọọ batrị ụgbọ ala.
- Gbanye isi gị. amplifier should power on (indicated by a power LED).
7. Ntuziaka na Mgbanwe Ọrụ
Once installed, fine-tune the amplifier settings for optimal sound quality.
7.1. Gain (Level Input) Adjustment
- Set your head unit's volume to about 75% of its maximum.
- Kpọọ egwu dị egwu.
- Jiri nwayọọ nwayọọ na-abawanye amplifier's "LEVEL INPUT" gain control until you hear distortion, then back it off slightly. This matches the ampmmetụta ntinye nke lifier na mmepụta nke isi unit gị.
7.2. Crossover Settings (Subsonic & Low Pass)
- LOW PASS (LPF): Adjust this control to set the upper frequency limit for your subwoofer. A common starting point is 80-100 Hz, but this depends on your subwoofer and other speakers.
- SUB SONIC: Set this filter just below the lowest frequency your subwoofer can safely reproduce, or just below the tuning frequency of your ported enclosure. This protects the subwoofer from over-excursion. A common setting is 20-30 Hz.
7.3. Bass Boost
- The "BASS BOOST" control provides an increase in bass output at 40 Hz. Use this feature cautiously. Excessive bass boost can lead to distortion and potential damage to your subwoofer. Start at 0dB and increase gradually if desired.
7.4. Usoro mgbanwe
- The "PHASE SHIFT" control (0°-180°) helps to align the subwoofer's output with the rest of your vehicle's speakers. Experiment with this setting while listening from your normal seating position. The correct setting will result in the most impactful and seamless bass response.
7.5. Remote Bass Control
- Connect the provided remote bass control unit to the amplifier. This allows for convenient adjustment of the subwoofer's output level from the driver's seat.
8. Nchọpụta nsogbu
Ọ bụrụ na ị nwere nsogbu na nke gị amplifier, refer to this section for common solutions.
| Nsogbu | Ihe nwere ike ime | Ngwọta |
|---|---|---|
| Enweghị ike / Amplifier anaghị agbanye |
|
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| Enweghị ụda |
|
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| Ụda agbagọ |
|
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| Amplifier Overheats |
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9. Nkọwapụta
Technical specifications for the ESX QL750.1 ampntughari:
| Njirimara | Nkọwapụta |
|---|---|
| Nọmba nlereanya | QL750.1-24V |
| AmpỤdị lifier | Monobloc, 1-Channel, Class D Digital |
| Voltage | 24 Volts (Min 17V, Max 24V) |
| Ike mmepụta (RMS) |
|
| Ike kacha mma | 900 Watt |
| Subsonic Myọcha | 10-40 Hz |
| Ihe ntinye nke obere (LPF) | 40-150 Hz |
| Bass Boost | 0 - 18 dB @ 40 Hz |
| Mgbanwe oge | 0-180° |
| Ịrụ ọrụ | 92% |
| Akụkụ (L x W x H) | 22.6 x 12 x 4.3 cm (8.9 x 4.7 x 1.7 inch) |
| Ntinye ọkwa dị elu | Yes, with Autosense / Auto-Turn-On |
| Start/Stop Compatible | Ee |
10. Nlekọta
The ESX QL750.1 amplifier requires minimal maintenance. Follow these guidelines to keep it in optimal condition:
- Nhicha: Jiri akwa dị nro ma kpọọ nkụ hichaa ya ampMpụta lifier. Ejila kemịkalụ siri ike ma ọ bụ ihe nhicha na-eme ka ihe dị nro.
- Igwe ikuku: Periodically check that the cooling fins are free from dust and debris to ensure proper heat dissipation.
- Njikọ: Occasionally check all power, ground, and signal connections to ensure they remain tight and secure.
11. Akwụkwọ ikike na nkwado
ESX products are manufactured to the highest quality standards. For warranty information, please refer to the warranty card included with your product or contact your authorized ESX dealer. For technical support or service inquiries, please contact your point of purchase or visit the official ESX websaịtị.
Biko dowe ihe akaebe nke ịzụrụ ihe maka akwụkwọ ikike.





