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QX-4300 

USER MANUAL    

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02

QUESTAUDIO.NET

PRODUCT OVERVIEW

The Quest Engineering QX-4300 is a 4 channel 1RU power amplifier suited for any application requiring 

 

superior performance and reliability. Ideal for multiple zone applications providing commercial sound 
installations with clean and reliable power. The QX-4300 provides 300 watts per channel of operation 
into 4 and 8 ohm loads, delivering full channel power to either low- or high-impedance loads. High and 
Low pass filters, limiters and standby are available per channel with fast 1ms wake up time. For high end 
commercial, AV or domestic applications, the QX range of amplifiers provide superior class D performance 
with proven reliability without compromise.

SAFETY PRECAUTIONS

 

Please read the instructions in this section carefully before use.

 

Ensure all instructions in this manual are observed as all information contained within is very important.

 

It is also highly recommended that this manual is retained for future reference.

SAFETY SYMBOL & MESSAGE CONVENTIONS

The safety symbols described are used in this manual to prevent bodily injury and property damage which 
could result from mishandling. Before operating this product, please read this manual first, in full so you 
that you are thoroughly aware of any risks.

Indicates a potentially hazardous situation which, 
if mishandled, could result in serious personal injury or death.

Summary of Contents for QX-4300

Page 1: ...QX 4300 USER MANUAL 01 QUESTAUDIO NET QUESTAUDIO NET QX 4300 USERMANUAL ...

Page 2: ...applications the QX range of amplifiers provide superior class D performance with proven reliability without compromise SAFETY PRECAUTIONS Please read the instructions in this section carefully before use Ensure all instructions in this manual are observed as all information contained within is very important It is also highly recommended that this manual is retained for future reference SAFETY SY...

Page 3: ...he event of storms and or lightning ensure all devices are disconnected from mains power in order to prevent damage to any of the units in the system When cleaning the unit ensure it has been disconnected from any power source and that only a dry cloth is used Do not use any aerosol or liquid based cleaners Ensure all electronics are electronically grounded earthed to a safety ground terminal in o...

Page 4: ...is limiting signal or muted if in standby mode Red Amplifier is clipping HPF Off Amplifier passing full range signal On 80Hz High Pass Filter Active 24dB Oct LPF Off Amplifier passing full range signal On 100Hz Low Pass Filter Active 24dB Oct LIMIT Off Amplifier will not limit On Amplifier will limit to prevent clipping A STBY Off Amplifier will not enter power saving mode On Amplifier will enter ...

Page 5: ...5 QUESTAUDIO NET REAR PANEL CONNECTIONS CH1 Input CH2 Input CH3 Input CH4 Input Phoenix Euroblock CH1 Output CH2 Output CH3 Output CH4 Output Phoenix Euroblock Mains Connection IEC Blank Plate for Expansion Module optional ...

Page 6: ...To avoid clipping reduce the level of the input The amplifier has a selectable limit option which can be engaged to help avoid clipping and it is recommended that this mode is used if the potential exists for extended periods of clipping The amplifier has a protection circuit which activates when a fault condition exists The LED will stay illuminated until the fault is resolved The protection circ...

Page 7: ...led by toggling the under panel A STBY switch from Off to On In this mode if no signal is detected for 25 mins the amplifier will sleep and wake within 660ms of detection of signal Mute mode puts the amp into a light sleep and occurs when the Standby option has been selected and no signal has been detected for 10mins if the amplifier detects signal it will wake within 1ms When no signal has been d...

Page 8: ...QX 4300 USER MANUAL 08 QUESTAUDIO NET INPUT OUTPUT WIRING Balanced Input Wiring Unbalanced Input Wiring Output Wiring ...

Page 9: ...Signal Detection Orange Red Limiter Clip Cooling Fan cooled temperature dependent Features Wake On Music Auto Mute 1ms wake up Limiting on High Temperature Amplifier Protection Systems Thermal protection Over Current Protection DC Protection HF Protection Mains Input Voltage Range 85VAC 265VAC Standby Power Consumption 4 8W Muted Power Consumption 16W Idle Power Consumption 28W Standard Power Cons...

Page 10: ...QX 4300 USER MANUAL 10 QUESTAUDIO NET TECHNICAL DRAWINGS 345mm Height 1RU 19 ...

Page 11: ...ing Quest Please take the time to complete your product registration Registering your Quest Engineering product will Confirm your warranty Register your product Protect your new product REGISTER ONLINE questaudio net warranty reg For spare parts and service ...

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