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SERVICE MANUAL
US Model
Canadian Model
AEP Model
UK Model
E Model
XM-404EQX/604EQX
STEREO POWER AMPLIFIER
Other Specifications
Circuit system
OTL (output transformerless) circuit
Pulse power supply
Inputs
RCA pin jacks
High level input connector
Outputs
Speaker terminals
Speaker impedance
2 – 8
Ω
(stereo)
4 – 8
Ω
(when used as a bridging
amplifier)
Maximum outputs
XM-404EQX:
Four speakers:
80 watts
×
4 (at 4
Ω
)
Three speakers:
80 watts
×
2 + 200 watts
×
1 (at 4
Ω
)
Two speakers:
200 watts
×
2 (at 4
Ω
)
XM-604EQX:
Four speakers:
120 watts
×
4 (at 4
Ω
)
Three speakers:
120 watts
×
2 + 300 watts
×
1 (at 4
Ω
)
Two speakers:
300 watts
×
2 (at 4
Ω
)
Rated outputs (supply voltage at 14.4 V)
XM-404EQX:
Four speakers:
40 watts
×
4 (20 Hz – 20 kHz, 0.04%
THD, at 4
Ω
)
50 watts
×
4 (20 Hz – 20 kHz, 0.1%
THD, at 2
Ω
)
Two speakers:
100 watts
×
2 (20 Hz – 20 kHz, 0.1%
THD, at 4
Ω
)
XM-604EQX:
Four speakers:
60 watts
×
4 (20 Hz – 20 kHz, 0.04%
THD, at 4
Ω
)
75 watts
×
4 (20 Hz – 20 kHz, 0.1%
THD, at 2
Ω
)
Two speakers:
150 watts
×
2 (20 Hz – 20 kHz, 0.1%
THD, at 4
Ω
)
Frequency response
5 Hz – 100 kHz ( dB)
Harmonic distortion
0.005% or less (at 1 kHz, 4
Ω
)
Input level adjustment range
0.2 – 4.0 V (RCA pin jacks)
0.4 – 8.0 V (High level input)
High-pass filter
50 – 200 Hz, –12 dB/oct
Low-pass filter
50 – 200 Hz, –12 dB/oct
Equalizer
50 Hz, 200 Hz, 800 Hz, 3.2 kHz,
12.8 kHz
±
12 dB
Power requirements
12 V DC car battery
(negative ground)
Power supply voltage
10.5 – 16 V
Current drain
At rated output: 23 A
Remote input: 1.5 mA
Dimensions
Approx. 260
×
55
×
320 mm
(w/h/d) (10
1/4
×
2
1/4
×
12
5/8
in.) not
incl. projecting parts and controls
Mass
XM-404EQX:
Approx. 3.2 kg (7 lb. 1 oz.) not incl.
accessories
XM-604EQX:
Approx. 3.3 kg (7 lb. 4 oz.) not incl.
accessories
Supplied accessories
Mounting screws (4), Terminal cap (1)
Design and specifications are subject to change without
notice.
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (US, Canadian model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
40 (404EQX), 60 (604EQX) watts per channel minimum continuous
average power into 4 ohms, four channels driven from 20 Hz to 20 kHz
with no more than 0.04% total harmonic distortion per Car Audio Ad Hoc
Committee standards.
+0
–3
Photo : XM-604EQX
MICROFILM
