Q66 Stereo P
ower Amplifier
Q66 Stereo Power Amplifier
4
POWER AMPLIFIERS
Part Number 535034 — 9817
600 Cecil Street, Buchanan, MI 49107
616/695-6831, 616/695-1304 Fax
©Telex Communications, Inc. • 1998 • Litho in U.S.A.
Specifications
Conditions:
1.
0 dBu= 0.775 V rms.
2.
Dual-mode ratings are for each
channel both operating, unless
noted.
3.
120-volt ac line voltage maintained
throughout testing.
Continuous Rated Output Power (20 –
20,000 Hz at less than 0.2% THD,
both channels driven per EIA RS-
490),
Dual Mode, 2 Ohms:
650 watts
Bridged Mode, 4 Ohms:
1,300 watts
Dual Mode, 4 Ohms:
500 watts
Bridged Mode, 8 Ohms:
1,000 watts
Dual Mode, 8 Ohms:
300 watts
Continuous Rated Output Power
(1 kHz, 1% THD, both channels
driven per EIA RS-490),
Dual Mode, 2 Ohms:
850 watts
Bridged Mode, 4 Ohms:
1,700 watts
Dual Mode, 4 Ohms:
600 watts
Bridged Mode, 8 Ohms:
1,200 watts
Dual Mode, 8 Ohms:
380 watts
Maximum Single Channel Output
Power (1 kHz burst, 20 ms on, 480 ms
off, per IHF-A),
2 Ohms:
950 watts
4 Ohms:
880 watts
8 Ohms:
460 watts
Power Bandwidth (+0, -1 dB, refer-
ence 1 kHz), Any Mode, 4 Ohms:
10 – 50,000 Hz
Frequency Response (+0, - 3 dB,
reference 1 Khz/1 watt):
13 – 45,000 Hz
Input Sensitivity, 1 kHz, Dual Mode
for 500 watts into 4 Ohms:
0 dBu (775 mV)
Input Impedance (per channel, 20 –
20,000 Hz), Balanced:
20,000 ohms
Total Harmonic Distortion (at rated
output power, measurement band-
width 80 kHz):
<0.05%
IMD (SMPTE) (60 Hz/7 kHz, typical,
at rated power):
<0.08%
DIM 30 (composite square-sine wave
bandwidth-limited to 30,000 Hz):
<0.03%
Slew Rate, Any Mode:
30 V/microsecond
Damping Factor, Any Mode,
(at 100 Hz / 1 kHz):
>300 / >200
Amplifier Protection:
Audio limiters; over-temperature; dc,
excessive hf, excessive back-EMF; in-
rush current limiters; shorted loads;
peak current limiters
Load Protection:
Start-up/shutdown transients; dc fault;
Low ac line voltage; nonlinear signal
limiters
Cooling System:
Front-to-rear airflow with two 3-speed
fans
Output Topology
True complementary symmetry with
ungrounded collectors (no mica
insulators for better heat transfer)
Output Devices,
Total Number: 20 devices
P
d
(max) Rating: 250 watts
I
c
(collector current): 20 amps dc
T
j
(max): 200
o
C (392
o
F)
Controls and Switches,
Rear:
Two calibrated level controls; input
routing (Dual/Parallel); chassis
ground switch (Grounded/Un-
grounded); bridged mode switch
(Bridged/Normal)
Front:
Power switch (On/Off)
Front-Panel Indicators:
Two LED’s per channel (4 total) for
signal present and limiter on, protect
indicator and power on
Connections,
Input:
3-pin female XLR-type connectors
for each channel in parallel with a
3-pin male XLR-type output
connector for easy signal routing;
the XLR connectors are wired
according to the IEC 268 standard:
pin 1 shield, pin 2 positive, pin 3
negative
Output:
Neutrik Speakon NL4MP for
channels A, B and for bridged mode
Power:
16-gauge 3-wire IEC standard
removable power cable
Operating Voltage:
120 V, 60 Hz ac
Power Consumption (both channels
operating in dual mode at 1/8 maxi-
mum output power at 4 ohms:
870 watts
Dimensions, (see Figure 1),
Height:
132.5 mm (5.25 in)
Width:
483 mm (19.0 in)
Depth:
385.5 mm (15.17 in)
Color:
Light gray
Net Weight:
35.2 lb (16 kg)
