QX4150
High Performance 4 x 150W Power AmplifierThe Quest QX4150 is a professional-grade 4 x 150W power amplifier housed in a compact 1U rack-mount chassis. Designed to deliver consistent performance across multiple channels, it provides 150W per channel into both 4 Ω and 8 Ω loads. Bridgeable outputs, integrated high-pass and low-pass filters, and a rapid 1ms standby wake-up time ensure precise signal processing and reliable operation in multi-zone systems. Its sophisticated design and robust construction make the QX4150 an ideal choice for commercial sound installations and high-end residential applications.
Key Specifications:
- Channels: 4 x 150W (Low-Z) or 2 x 300W (Bridge Stereo for Low-Z & 70/100V)
- Mounting: 1RU Rack
- Optional: Dante/AES67 Version
SPECIFICATIONS
POWER (PEAK)
Total Power
1100 W
Normal Operation
8Ω
4 x 200W
4Ω
4 x 275W
70V
N/A
100V
N/A
Bridge-Mono Mode
8Ω
2 x 550W
4Ω
2 x 550W
70V
2 x 550W
100V
2 x 550W
POWER (RMS)
Total Power
600 W
Normal Operation
8Ω
4 x 150W
4Ω
4 x 150W
70V
N/A
100V
N/A
Bridge-Mono Mode
8Ω
2 x 280W
4Ω
2 x 260W
70V
2 x 250W
100V
2 x 240W
I/O
OUTPUT CIRCUITRY
UMAC™ Class-D – full bandwidth PWM modulator with ultra-low distortion
OUTPUT CHANNELS
Four Speaker Level Output via 2-pin Euroblock/Phoenix connector with 5.08 mm pitch and screw-lock
INPUT CHANNELS
Four Analogue Balanced Line Level Inputs via 3-pin Euroblock/Phoenix connector with 5.08 mm pitch and screw-lock
DEFAULT GAIN
32 dB
FREQUENCY RESPONSE
20 Hz to 20 kHz (+/-0.3 dB)
TOTAL HARMONIC DISTORTION
0.006% (1 kHz @ 1/8th Power / 8 ohm load)
DYNAMIC RANGE
104 dB (A-weighted)
MAXIMUM INPUT LEVEL
+24 dBu
INPUT IMPEDANCE
10kohm
LATENCY
N/A
CONTROL
CONTROLS AND INDICATORS (FRONT)
Per Channel: Volume Potentiometer, 80 Hz HPF Switch, 100 Hz LPF Switch, Bridge-Mono Switch, Limiter Switch and Auto-Standby Switch
CONTROLS AND INDICATORS (REAR)
N/A
CONTROL AND MONITORING
N/A
DIGITAL SIGNAL PROCESSING
N/A
PROTECTION CIRCUITS
Thermal protection, Over-Current Protection, DC Protection, HF Protection
ELECTRICAL
MAINS POWER INPUT
Universal Mains, 100-240V, 50-60 Hz
MAINS CONNECTOR
Standard IEC C14
POWER CONSUMPTION - STANDBY
3.8 W
POWER CONSUMPTION - IDLE
16 W
POWER CONSUMPTION - 1/8TH POWER / 8 ohm Load
75 W
POWER CONSUMPTION - 1/3RD POWER / 8 ohm Load
200 W
HEAT
HEAT GENERATED - STANDBY
13 BTU/hr / 3.2 kJ per hour
HEAT GENERATED - 1/8TH POWER / 8 ohm Load
154 BTU/hr / 38 kJ per hour
COOLING
Fan-Forced Air Cooling – Temperature-Dependent
FAN NOISE (ANECHOIC CHAMBER @ 1 m)
38 dB(A)
SIZE
RACK SIZE
1RU
DIMENSIONS (W x H x D)
482 x 44.5 x 344 mm (19 x 1.75 x 13.5")
WEIGHT
5.3 kg (11.7 lbs)
SHIPPING DIMENSIONS (W x H x D)
490 x 80 x 410 mm (19.3 x 3.1 x 16.1")
SHIPPING WEIGHT
7.5 kg (16.5 lbs)
ACCESSORIES
ACCESSORIES (INCLUDED)
Mains Cable, Feet, Euroblock/Phoenix Plugs
ACCESSORIES (AVAILABLE SEPARATELY)
Dante® 4CH Input Card (QDNT4D), Dante® 4CH Input Card with Switched Output (QDNT4DS), Volume Control Card (QVR4), Wall Plate Volume Control (WPV1)
OPTIONS
Dante® Expansion Card (additional 4 inputs, Dante® AoIP, AES67 compatible)
| Maximum Dynamic Power (@ 1kHz, 1% THD) (PEAK) |
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INSTALLATION ACCESSORIES
WPV1
Wall plate volume control for QX amplifiers with QRV4 card.
QRV4
Remote volume control card for QX Series amplifiers, used with WPV1 panel.
QDNT4D
Dante/AES67 expansion card for QX amps; adds four networked audio input channels.
QDNT4DS
The QDNT4DS is a switched Dante expansion input card designed for QX Series amplifiers. It supports both Dante and AES67 protocols and includes a spare switched output for cascading applications.
