2X 150W 1RU -1/3 SPACE COMMERCIAL POWER AMPLIFIER

Quest QX-300 SeriesCommercial Power Amplifier

The QX-300 series amplifiers take commercial audio to a new level. The superior Class-D technology combined with small form factor make the QX-300 series the perfect solution for any commercial or industrial application. Wall and table mount options offer more flexibility, 10 units can be mounted in 3RU, achieving extremely high power to channel count for density.

UMAC™ Class-D technology delivers unequalled audiophile specifications, including the highest dynamic range and the lowest distortion performance of any comparable pro audio amplifier. This makes the QX-300 Series suitable for pro audio applications and for use in Hi-Fi and AV products.

Features

High Performance 2 x 150W Power Amplifier
Auto Load Sensing: 4-16 Ohm, 70V Line (Stereo) 100V Line (Bridged-Mono)
Energy smart technology (Green Energy Star & ErP 1275/2008/EC compliant)
UMAC™ Class-D – full bandwidth PWM modulator with ultra-low distortion
DanteTM/AES67 inputs available* (D version)
Individual volume control, standby, 80Hz High Pass Filter

Short circuit protection, DC protection, under voltage protection, temperature protection, overload protection
UREC™ universal mains switch mode power supply with Power Factor Correction (PFC) and integral standby converter
Rack-mountable 1RU 1/3 space, wall and table mount options available
Euroblock style amplifier I/O connectors
High Dynamic range incorporating, DynamiQ Bass technology®
Designed, Engineered, and Assembled in Australia

Specifications

Frequency Response	20-20kHz (+/-0.3dB)
Peak Output Current	25A
Dynamic Range	112dB (A-weighted)
Noise Level	-76dBu (A-weighted)
Distortion (1kHz@1W/8Ohm)	0.003%
Distortion (1kHz@50W/8Ohm)	0.011% (Stereo) 0.004% (Bridged-Mono)
Crosstalk (1kHz@1W/8Ohm)	-95dB
Gain	26dB/32dB
Maximum Input Level	+24dBu
Amplifier Version	QX-300A	QX-300D
Input Type	Phoenix Balanced Inputs	Dante RJ-45 (AES67 Compatible) with RJ-45 Link
Input Sensitivity	+7dBu/+4dBu	-4.5dBFS/-1.5dBFS
Input Impedance	10kOhm	-
Maximum Input Level	+24dBu	0dBFS
Output Resistance	22.5mOhm/43.6mOhm
Front Controls	Volume Adjust, 80Hz HPF Enable, Bridged-Mono Enable, Limiter Enable, Auto-Standby Enable)
Indicators (LEDs)	Blue/Orange	Active/Standby
	Orange	Protection
	Green	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
Amplifier Version	QX-300A	QX-300D
Standby Power Consumption	0.4W	2.5W
Muted Power Consumption	4.2W	6.5W
Idle Power Consumption	7.2W	9.5W
Standard Power Consumption (Pink Noise@ 1/8th Rated Power, 8Ohm)	28W	30W
Mains Connector	Standard IEC C14
Dimensions (H x W x D)	44.5 x 140 x 330 mm (1.75 x 5.5 x 13")
Weight	1.6kg (3.5 lbs)
Accessories	Mains Cable, Feet, User Manual, Phoenix Plugs, Rack Ears

OPERATION MODES	Stereo Mode		Bridged-Mono Mode
LOAD	8Ohm	4Ohm	8Ohm	4Ohm	70V (22Ohm)	100V (33Ohm)
MAXIMUM CONTINUOUS POWER (@1KHZ, 1% THD)	2 x 140W	2 x 140W	1 x 280W	1 x 260W	250W	240W
MAXIMUM DYNAMIC POWER(@1KHZ, 1% THD)	2 x 200W	2 x 275W	1 x 550W	1 x 550W	550W	550W

* All specifications were measured at 240VAC

** Quest Engineering reserves the right to make changes in specifications, or products without prior notice.

*** The figures shown above are ‘real world’, usable specifications and are conservative as a result. Quest Engineering does not believe in portraying misleading or exaggerated specifications.

(QX300A)