Pioneer GM-X944, Service Manual

8.2 SPECIFICATIONS

-

GM-X944/X1R/UC

29

GM-X944

Power source .............................................................................................................. 14.4 V DC (10.8 — 15.1 V allowable)
Grounding system ............................................................................................................................................ Negative type
Current consumption ........................................................................................................ 43.7 A (at continuous power, 4

Ω

)

Average current drawn* ........................................................................................................ 14.5 A (4 

Ω

for four channels)

26.5 A (4 

Ω

for two channels)

Fuse ............................................................................................................................................................................ 30 A 

×

3

Dimensions .......................................................................................................................... 270 (W) 

×

60 (H) 

×

297 (D) mm

[10-5/8 (W) 

×

2-3/8 (H) 

×

11-3/4 (D) in]

Weight  ........................................................................................................ 5.4 kg (11.9 lbs) (Leads for wiring not included)
Maximum power output  .................................................................................................................... 150 W 

×

4 / 500 W 

×

2

Continuous power output  ............................................................ 75 W 

×

4 (at 14.4 V, 4 

Ω

, 20 — 20,000 Hz, 0.04% THD)

250 W 

×

2 (at 14.4 V, 4 

Ω

, 20 — 20,000 Hz, 0.4% THD)

125 W 

×

4 (at 14.4 V, 2 

Ω

, 20 — 20,000 Hz, 0.4% THD)

Load impedance  .............................................................................................................................. 4 

Ω

(1 — 8 

Ω

allowable)

(Bridge connection: 2 — 8 

Ω

allowable)

Frequency response  ............................................................................................................ 10 — 50,000 Hz (+0 dB, –1 dB)
Signal-to-noise ratio  ...................................................................................................................... 105 dB (IHF–A network)
Distortion ............................................................................................................................................ 0.005% (10 W, 1 kHz)
Separation ........................................................................................................................................................ 65 dB (1 kHz)
Variable crossover network

A CH: LPF-L/LPF-H/HPF-L/BPF
B CH: LPF-L/LPF-H/HPF-L/HPF-H

Cut off frequency  .................................................................................................... Low frequency: 40 — 120 Hz

High frequency: 3k — 9k Hz

Cut off slope  .......................................................................................................................................... –12 dB/oct

Maximum input level/impedance  .................................................................................... RCA: 6.5 V/22 k

Ω

(0.4 — 6.5 V)

Note:

• Specifications and the design are subject to possible modification without notice

due to improvements.

*Average current drawn

• The average current drawn is nearly the maximum current drawn by this unit when

an audio signal is input. Use this value when working out total current drawn by
multiple power amplifiers.