Quest Engineering QX-280 Series Owner's Manual - page 7
* 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.
6
Technical Specifications
*per channel
Peak Output Current
25A
THD+N
(1kHz @ 1W / 1kHz Rated Power)
0.022% / 0.015%
Dynamic Range
119dBA
Output Resistance
(1kHz)
43.6m
Ω
Peak Output Voltage
(unloaded)
±140V
Power Output
4
Ω
280W
8
Ω
245W
70V
250W
100V
240W
DC Offset
±7mV
Frequency Response
±0.1dB 20Hz - 20kHz
(1st order 22kHz LPF)
Voltage Gain
(@ 1kHz)
32dB
Mechanical Specifications
Net Weight
QX1280 - 4.5kg
QX2280 - 4.9kg
QX4280 - 5.7kg
Gross Weight
QX1280 - 7.1kg
QX2280 - 7.5kg
QX4280 - 8.3kg
Dimensions
(H x W x D)
44 x 485 x 304mm
Input Connections
3-Way 5.08mm Captive Screw Connector
Output Connections
2-Way 5.08mm Locking Captive Screw Connector
Mains Power Connection
IEC C14
Mains Input Voltage
85 - 265VAC