- Service manual
- Service manual supplement
- Service manual supplement
- Service manual supplement
- Service manual supplement
Marantz - 250 - Amplifier
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Equipment:
250
Date:
1975
Category:
Group:
Sub Group:
Information
Power Output (each channel, both channels driven, at rated
distortion, 20 Hz to 20 KHz)
Load RMS
4 ohms 150W
8 ohms 125W
16 ohms 64W
Total Harmonic
Distortion........................................................................at
or below rated power,
20 Hz to 20 KHz. less than 0.1%
Intermodulation
Distortion............................................................................at
or below rated power,
SMPTE, any combination of two frequencies, 20 Hz to 20 KHz:
less than 0.1%
Frequency Response
............................................................................+0
- 1.5 dB 2 Hz to 100 KHz,
±0.1 dB 20 Hz to 20 KHz
Input Sensitivity
.............................................................................................1.5
Volts for rated power
Input Impedance
....................................................................................................................100K
ohms
Damping Factor
........................................................................................Greater
than 100 at 8 ohms
GENERAL
Total Noise
............................................................Better
than 106 dB below rated power into 8 ohms
Power
Requirements....................................................................................
120V AC, 500W, 50/60 Hz
Dimensions
.................................................................................15-3/8"
w. x 6-1/8” h. x 9-1/2" deep
Unit
Weight............................................................................................................................28
pounds
Shipping Weight
.....................................................................................................................34
pounds
220 volt AC Conversion Split primary windings permit easy
conversion from 120 volt to 220 volt operation.
5 Manuals
Service manual
Manual type:
Service manual
Pages:
27
Size:
10.0 MB
Language:
english
Revision:
Manual-ID:
Date:
Quality:
Scanned document, all readable.
Upload date:
March 8, 2015
MD5:
b84a7a3d-4ce9-5763-7eed-5a79e2a09263
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1211
Last month downloads:
3
Information
This service manual is intended for use by authorized
warranty stations. The manual contains service information
for the Marantz model 250 Stereo Power Amplifier manufactured by the Marantz Company, a subsidiary of the
Superscope Incorporated, Sun Valley, California 91352.
Adjustment, maintenance, and troubleshooting information
listed herein should be attempted only by the experienced
technician, one knowledgeable in solid state Amplifier operation and the use of test equipment. All instructions
should be read carefully and understood fully before
proceeding with any service.
Symptoms (and their remedies) listed in the troubleshooting
section, are those which might occur in some units. As the Marantz Company becomes aware of other field problems,
supplementary service bulletins will be issued to all
stations. To improve this service, all problems (and their
solutions) not: covered in this service manual should be
brought to the attention of the National Service Manager at
our Sun Valley location.
Service manual supplement
Manual type:
Service manual supplement
Pages:
1
Size:
56.6 KB
Language:
english
Revision:
Manual-ID:
M-250-5
Date:
November 1977
Quality:
Scanned document, all readable.
Upload date:
Nov. 24, 2024
MD5:
126b3bbd-fab6-f05b-65c0-3a749e21e384
Downloads:
102
Last month downloads:
3
Information
Service manual supplement
Manual type:
Service manual supplement
Pages:
1
Size:
45.7 KB
Language:
english
Revision:
Manual-ID:
Date:
September 1976
Quality:
Scanned document, all readable.
Upload date:
Nov. 24, 2024
MD5:
f19d668c-ebc0-b63c-8821-836a9f385a6b
Downloads:
131
Last month downloads:
2
Service manual supplement
Manual type:
Service manual supplement
Pages:
7
Size:
17.8 MB
Language:
english
Revision:
Manual-ID:
M-250-3
Date:
August 1976
Quality:
Scanned document, all readable.
Upload date:
Nov. 24, 2024
MD5:
61fbb9e3-651f-e221-bc7b-3c8473c3e902
Downloads:
225
Last month downloads:
3
Information
Power Amplifier modification procedure.
Service manual supplement
Manual type:
Service manual supplement
Pages:
2
Size:
14.0 MB
Language:
english
Revision:
Manual-ID:
M-250-2
Date:
March 1975
Quality:
Scanned document, all readable.
Upload date:
Nov. 29, 2024
MD5:
5b99997f-d9b4-874b-1be4-418b88aa8b86
Downloads:
127
Last month downloads:
4
Information
Transistor replacement.