1. Uvod in konecview
The ESX QUANTUM QS-FOUR is an ultra-compact 4-channel Class D amplifier designed to significantly upgrade your car audio system. This powerful yet miniature 4-channel version measures only 90 x 35 x 80 mm, making it one of the smallest amplifiers in its class. It delivers an impressive 4 x 60 Watts RMS, providing substantial power to factory or aftermarket speakers.
The QS-FOUR features exceptionally low distortion (THD+N < 0.007% at 5W/RMS) and high efficiency (up to 90%), ensuring clear and dynamic sound reproduction. Its compact size allows for flexible installation, often directly behind the dashboard, making it an ideal plug-and-play solution for vehicles. The amplifier's low current draw (5-10 Amps) means it can often utilize existing factory power cables. Additionally, the QS-FOUR includes low-level outputs for connecting active subwoofers or larger monoblock amplifiers, offering expandability for enhanced bass.

2. Varnostne informacije
- Pred začetkom kakršnih koli namestitvenih del vedno odklopite akumulator vozila, da preprečite kratke stike in poškodbe.
- Professional installation is recommended. Incorrect wiring can cause serious damage to the amprešilca, vozila ali telesne poškodbe.
- Ensure all wiring is properly insulated and secured to prevent short circuits and vibrations.
- Ne nameščajte amplifier in locations exposed to moisture, excessive heat, or direct sunlight.
- Use appropriate gauge wiring for power and speaker connections as specified in the installation section.
- Protect all power cables with an inline fuse located close to the battery.
- Izogibajte se postavljanju amplifier where it could obstruct vehicle controls or safety devices.
3. Vsebina paketa
Prosimo, preverite vsebino paketa, da se prepričate, da so vsi predmeti prisotni in nepoškodovani:
- ESX QUANTUM QS-FOUR Ampenota lifier
- High-Level Input Wiring Harness with EPS (Error Protection System)
- Power Input Wiring Harness
- Speaker Output Wiring Harness
- RCA Line-Out Cables
- Inline Fuse Holder with Fuse
- Montažni vijaki

4. Značilnosti izdelka
- Izjemno kompakten dizajn: Dimensions of 90 x 35 x 80 mm for flexible installation.
- Visoka izhodna moč: 4 x 60 W RMS at 2 Ω, 4 x 45 W RMS at 3 Ω, 4 x 35 W RMS at 4 Ω, or 2 x 120 W RMS bridged at 4 Ω.
- Full Range Class D Technology: Učinkovita dobava energije z minimalnim sproščanjem toplote.
- Selectable Crossover Filters: Front and Rear Highpass/Lowpass filters switchable at 80 Hz.
- High-Level Inputs with EPS: Error Protection System for seamless integration with factory head units.
- Auto-Turn-On Function: Automatic power-on via DC offset or VOX (signal detection).
- 2-Channel RCA Line-Out: For connecting external active subwoofers or additional amposvežilci.
- 12V Remote Output: Provides a remote signal for other devices.
- Širok frekvenčni odziv: 10 Hz do 60 kHz.
- Low Total Harmonic Distortion (THD+N): < 0.007% at 5W/RMS.
- Visoka učinkovitost: Up to 90% for reduced power consumption.
5. Nastavitev in namestitev
5.1 Žične povezave
Before making any connections, ensure the vehicle's battery is disconnected. Refer to the diagrams below for proper wiring.
Vhodna moč:
- + 12V: Connect to the positive terminal of the car battery via an inline fuse (not included, but a fuse holder is provided).
- GND: Connect to a solid, unpainted metal point on the vehicle chassis. Ensure a good ground connection.
- REM (daljinski): Connect to the remote output of your head unit. If using high-level inputs with Auto-Turn-On, this connection may not be necessary.
Izhod zvočnika:
Connect your speakers to the designated terminals. Ensure correct polarity (positive to positive, negative to negative). The ampLiferier podpira 4-kanalni stereo ali 2-kanalni premostitveni način delovanja.
- FL+/FL-: Sprednji levi zvočnik
- FR+/FR-: Sprednji desni zvočnik
- RL+/RL-: Zadnji levi zvočnik
- RR+/RR-: Zadnji desni zvočnik
- Premostitveni način: For 2-channel operation, connect the positive of the left speaker to FL+ and the negative to FR-. For the right speaker, connect positive to RL+ and negative to RR-. Refer to the manual for specific bridging instructions.

Vhodne povezave:
- Vhod na visoki ravni: Use the provided harness to connect to your head unit's speaker outputs. The EPS (Error Protection System) ensures compatibility with various factory systems.
- RCA Line-Out: Use the RCA cables to connect to an active subwoofer or another amplifier.

5.2 Začetne nastavitve
- Level Input (Gain): Start with the gain knobs set to minimum (MIN). Gradually increase the gain until the sound is clear and distortion-free at your desired listening volume. Avoid setting the gain too high, as this can introduce distortion.
- X-OVER (Križanje):
- POLNO: Full range audio (no filter).
- HP (visokopasovni): Allows frequencies above 80 Hz to pass, typically used for full-range speakers to remove bass.
- LP (nizkoprepustni tok): Allows frequencies below 80 Hz to pass, typically used for subwoofers (though this amplifier is not primarily for subwoofers, it can be used for mid-bass applications).
- AUTO TURN-ON:
- IZKLOPLJENO: Amplifier turns on via the REM wire.
- VOX: Amplifier turns on when an audio signal is detected (signal sensing).
- DC: Amplifier turns on when a DC offset is detected on the high-level inputs (common with factory head units).
6. Navodila za uporabo
Once properly installed and configured, the ESX QUANTUM QS-FOUR amplifier operates automatically with your vehicle's audio system.
- Vklop/izklop: The amplifier will power on and off with your head unit, depending on the selected AUTO TURN-ON mode (REM, VOX, or DC). The 'POWER' LED on the rear panel will illuminate when the amplifier je aktiven.
- Predvajanje zvoka: Play audio through your head unit as usual. The amplifier will provide enhanced power and clarity to your speakers.
- Prilagoditev glasnosti: Control the overall system volume using your head unit. If distortion occurs at high volumes, slightly reduce the ampnastavitev ojačanja Liferierja.
- Način zaščite: If the 'PROTECT' LED illuminates, the amplifier has entered protection mode due to an issue (e.g., short circuit, overheating, low voltage). Turn off your audio system and vehicle, then troubleshoot the cause before restarting.
7. Vzdrževanje
- Čiščenje: Za čiščenje uporabite mehko, suho krpo ampzunanjost čistilnega sredstva. Ne uporabljajte agresivnih kemikalij ali abrazivnih čistil.
- Povezave: Občasno preverite vse napajalne, ozemljitvene in zvočniške povezave, da se prepričate, da so varne in brez korozije.
- Prezračevanje: Zagotovite ampHladilna rebra izpušnega sistema niso ovirana, da bi omogočila pravilno odvajanje toplote.
- Zamenjava varovalke: If the inline fuse blows, replace it only with a fuse of the same type and rating to prevent damage.
8. Odpravljanje težav
| Težava | Možen vzrok | rešitev |
|---|---|---|
| Iz zvočnikov ni zvoka | Brez moči za amplifier; Incorrect input/output wiring; Head unit not sending signal; AmpLifier v zaščitnem načinu. | Check power and ground connections; Verify remote turn-on signal; Check speaker and input wiring; Ensure head unit is on and playing audio; Check 'PROTECT' LED. |
| Popačen zvok | Gain set too high; Incorrect crossover settings; Speaker impedance mismatch; Damaged speakers. | Reduce gain level; Adjust crossover settings; Verify speaker impedance is within amplifier's range; Test speakers individually. |
| 'PROTECT' LED is on | Short circuit in speaker wiring; Overheating; Low/high voltage; Speaker impedance too low. | Turn off system, check all speaker wires for shorts; Ensure adequate ventilation; Check vehicle's battery voltage; Verify speaker impedance. |
| Amplifier se ne vklopi | No +12V power; No ground connection; No remote signal (if not using Auto-Turn-On); Blown fuse. | Check fuse, power, and ground wires; Verify remote wire connection or Auto-Turn-On setting. |
9. Specifikacije
| Funkcija | Specifikacija |
|---|---|
| Številka modela | QS-FOUR |
| Kanali | 4 |
| Output Power (RMS @ 4 Ω) | 4 x 35 W |
| Output Power (RMS @ 3 Ω) | 4 x 45 W |
| Output Power (RMS @ 2 Ω) | 4 x 60 W |
| Bridged Output Power (RMS @ 4 Ω) | 2 x 120 W |
| Frekvenčni odziv | 10 Hz – 60 kHz |
| Total Harmonic Distortion (THD+N @ 5W/RMS) | < 0.007 % |
| Učinkovitost | do 90 % |
| Križni filtri | HP/LP switchable @ 80 Hz (Front/Rear) |
| Vhodna voltage | 12V DC (Min/Max) |
| Dimenzije (D x Š x V) | 90 x 80 x 35 mm (3.54 x 3.15 x 1.38 palca) |
| Vrsta namestitve | Samostoječ |
| Skladnost | CE |
10. Garancija in podpora
The ESX QUANTUM QS-FOUR amplifier comes with a manufacturer's warranty. Please refer to the warranty card included with your product or contact your authorized ESX dealer for specific warranty terms and conditions.
For technical support, installation assistance, or service inquiries, please contact your point of purchase or visit the official ESX Car-Audio webspletno mesto za kontaktne informacije in vire.