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8.2 SPECIFICATIONS
- GM-X644/X1R/UC
Power source .............................................................................................................. 14.4 V DC (10.8 — 15.1 V allowable)
Grounding system ............................................................................................................................................ Negative type
Current consumption ........................................................................................................ 32.2 A (at continuous power, 4 Ω)
Average current drawn* ........................................................................................................ 10.9 A (4 Ω for four channels)
Fuse ............................................................................................................................................................................ 25 A × 2
Dimensions .......................................................................................................................... 270 (W) × 60 (H) × 250 (D) mm
Weight .......................................................................................................... 4.1 kg (9.0 lbs) (Leads for wiring not included)
Maximum power output .................................................................................................................... 100 W × 4 / 240 W × 2
Continuous power output ............................................................ 50 W × 4 (at 14.4 V, 4 Ω, 20 — 20,000 Hz, 0.04% THD)
Load impedance .............................................................................................................................. 4 Ω (1 — 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)
Low pass filter .................................................................................................................... Cut off frequency: 40 — 120 Hz
High pass filter .................................................................................................................... Cut off frequency: 40 — 120 Hz
Maximum input level/impedance .................................................................................... RCA: 6.5 V/22 kΩ (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.
15.9 A (4 Ω for two channels)
[10-5/8 (W) × 2-3/8 (H) × 9-7/8 (D) in]
120 W × 2 (at 14.4 V, 4 Ω, 20 — 20,000 Hz, 0.4% THD)
60 W × 4 (at 14.4 V, 2 Ω, 20 — 20,000 Hz, 0.4% THD)
(Bridge connection: 2 — 8 Ω allowable)
Cut off slope: –12 dB/oct
Cut off slope: –12 dB/oct
Speaker: 26 V/40 kΩ (1.6 — 26 V)
GM-X644,X544
25
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