Electro-Voice Q44 User Manual download pdf (Page 4)

Q44 Stereo Power Amplifier

Q44 Stereo Power Amplifier

4

POWER AMPLIFIER Part Number 535033 — 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:

450 watts

Bridged Mode, 4 Ohms:

900 watts

Dual Mode, 4 Ohms:

350 watts

Bridged Mode, 8 Ohms:

700 watts

Dual Mode, 8 Ohms:

230 watts

Continuous Rated Output Power

(1 kHz,1% 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:

450 watts

Bridged Mode, 8 Ohms:

900 watts

Dual Mode, 8 Ohms:

280 watts

Maximum Single Channel Output

Power (1 kHz burst, 20 ms on, 480 ms

off, per IHF-A),

2 Ohms:

720 watts

4 Ohms:

640 watts

8 Ohms:

340 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:

25 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: 16 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/Ungrounded);

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:

690 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:

33.0 lb (15 kg)

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