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QUAD AMPLIFIER
22 QD-4240/4480/4960, QX-4960
Specifications
Specifications *0dB=0.775Vrms, Half Power=1/2 Power Output Level (Rated Power)
40W 80W 170W
60W 120W 240W
120W 240W 480W
60W 120W 240W
20Hz~50kHz (±0.5dB)
0.05%
0.07%
0.07%
80dB
100dB
0dB
20kΩ(Balance/Unbalance)
Power (Red)
Protection (Mute) x 4 (Red)
Clip x 4 (Red)
Signal x 4 (Green)
Power SW ON/OFF muting
Heatsink Temp 100˚C (212˚F)
–50˚C (122˚F)–60˚C (140˚F)–
Low-Speed – Variable – Hi-Speed
(Front) Power SW: Push up On/Push down Of
Attenuator: 21-position dB calibrated
(Rear) Mode SW: Bridge=BTL/Stereo/Parallel
100-120VAC or 220-240VAC; 50/60Hz
(Supplied AC mains transformer depends on country requirements)
300W 420W 770W
11.5kg/25.3lb 15.5kg/34.2lb 17kg/37.5lb
482(W) x 88(H) x 369(D) mm/19(W) x 3.5(H) x 14.5(D) in
Input : Combination Jack (balance)
Output : 5-Way binding posts x 4
Rated Output (RMS)
f=1kHz, THD+N0.05% (Typical)
QUAD RL=8Ω
RL=4Ω
BRIDGEDSTEREO RL=8Ω
One Channel Driven
f=1KHz THD+N0.05% RL=4Ω
Frequency Response RL=8Ω, P=1W
Power Bandwidth Half Power, THD+N0.1%
QUAD RL=8Ω
Total Harmonic Distortion (THD+N)
f=20Hz~20kHz, Half Power
QUAD RL=8Ω
RL=4Ω
BRIDGED RL=8Ω
Channel Separation Half Power RL=8Ω,
f=1kHz, ATT. max. Input 600Ωshunt
Residual Noise (DIN Audio Filter)
Signal-to-Noise Ratio DIN Audio,
Input 600ΩShunt
Sensitivity (ATT max.)
Rated Power into 4Ω1kHz
Input Impedance (ATT max.)
Indicators
Protection
PC Limiter
Fan Circuit
Controls
Power Source
Power Consumption (1/8 Power)
Weight
Dimensions
Connectors
Crossover Frequency From 60Hz to 250Hz or 600Hz to 2.5kHz
Crossover Slope 24dB/octave Roll/off (Linkwitz Filter)
LOW Filter 40Hz (12dB/octave)
* Specifications and design subject to change without notice.
- ACTIVE CROSSOVER (QX-4960)
10Hz~20kHz10Hz~70kHz
–70dB: ATT min. –85dB: ATT min.
QD-4240 QD-4480 QD-4960 QX-4960
Power (Red)
Protection (Mute) x 4 (Red)
Clip x 4 (Orange)
Signal x 4 (Green)
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