Quest Engineering QA 1004 User Manual page 11

Quest Engineering QA Series Amplifiers: Specifications*
QA 1004
290 W per channel
Rated Power @ 1 kHz at <0.1%
(2 x 8 Ohms)
T.H.D.both channels
driven
575 W per channel
Rated Power @ 1 kHz at <0.1%
(2 x 4 Ohms) T.H.D.both channels
driven
<0.1%@250 W per
T.H.D.
channel from 20 HZ
to 20 kHz
Minimum Load
Impedance
Phase Response
Input Impedance
Cooling Two temperature dependant variable speed 80mm high output DC fans
Controls
Two front panels attenuators, rear panel mode switch and gain select switch
Hi Pass:
Linkwitz-Reily
(24 db/Octave)
Low Pass:
Linkwitz-Reily
(24 db/Octave)
Voltage Gain
29 dB or 24 dB
@ 0.775V
Crosstalk >-60 dB @ 1 kHz at rated power @ 8 Ohms
>-105 dB, "A" weighted
Hum and Noise referenced to rated
power @ 8 Ohms
Slew Rate >30V/us
Damping Factor
>500:1 @ 20 Hz - 1 kHz >700:1 @ 20 Hz - 1 kHz
(8 Ohms)
Protection
Connectors XLR, Speakon speaker output, 240/230 V 16 amps IEC mains
Construction
Dimensions
Net Weight 17 kg
Packaged
20 kg
Shipping Weight
* All specifications are correct at time of printing, Quest Engineering reserves the right to change
specifications at any time and won't be held responsible for any typographic errors in this publication.
QA 2004
490 W per channel
@ 1 kHz at <0.1%
T.H.D. both channels
driven
870 W per channel @
1 kHz at <0.1% T.H.D.
both channels driven
>0.1% @ 400 W per channel from 20 Hz to 20 kHz
4 Ohms – sine wave
+5 to -15 from 20 Hz to 20 kHz
20k Ohms, balanced; 10k Ohms, unbalanced
Off/35/80 Hz
Off/80/110 Hz
32 dB or 26 dB
>-107 dB, "A"
weighted referenced to
rated power @ 8 Ohms
Thermal, DC, turn-on bursts, subsonic, incorrect loads
Cold Steel Rolling + Machined aluminium front panel
89 x 483 x 496 mm
21 kg
23 kg
User Manual
QA 3004 QA 4004
1,090 W per channel
660 W per channel @ 1
@ 1 kHz at <0.05%
kHz at <0.05% T.H.D.
T.H.D. both channels
both channels driven
driven
1100 W per channel @ 2,000 W per channel @
1 kHz at <0.05% T.H.D. 1 kHz at <0.05% T.H.D.
both channels driven both channels driven
>0.5% @ 400 W per
channel from 20 Hz to
20 kHz
4 Ohms – sine wave
+20 to -25 from 20 Hz
to 20 kHz
20k Ohms balanced
10k Ohms unbalanced
Two temperature
dependant variable
speed 120mm high
output DC fans
Two front panels
attenuators, rear panel
mode switch and gain
select switch
Off/35/80 Hz
Off/80/110 Hz
35 dB or 29 dB 38 dB or 32 dB
>-60 dB @ 1 kHz at >-60 dB @ 1 kHz at
rated power @ 8 Ohms rated power @ 8 Ohms
>-107 dB, "A" weighted >-104 dB, "A"
referenced to rated weighted referenced to
power @ 8 Ohms rated power @ 8 Ohms
>40V/us >44V/us
>800:1 @ 20 Hz - 1 kHz
Thermal, DC, turn-on
bursts, subsonic,
incorrect loads
XLR, Speakon speaker
output, 240/230 V 20
amps IEC mains
Cold Steel Rolling +
Machined aluminium
front panel
132 x 483 x 496 mm
23 kg 35 kg
26 kg 38 kg
Power Ampli ers
QA SERIES
11
QA Series User Manual