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Marantz Model 25 Receiver

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Front View

Front View with Turntable Cover down
Image Attribution: Joel - The Turntable Factory
Date: January 2nd, 2001

Front View with Turntable Cover up
Image Attribution: Joel - The Turntable Factory
Date: January 2nd, 2001

Record changer details for the Model 25

The manual for the Model 25 lists the following turntables as being compatible:


40, SL-55, SL-65, SL-95


40H, 50H, 620, 620B, 630


1009, 1010A, 1010F, 1015F, 1019

The Model 25 has an internal set of phono jacks for mounted turntables inside the chassis near the right rear cover, as well as an AC plug for the changer being installed. There is an external/internal switch by the phono plugs; make sure that's in the correct position. This could also account for the external phono not working in unts that have previously had integral changers mounted.

Contributed by Ben
On December 13th, 2000


DescriptionCould have optional turntable mounted on top
Retail Price360
Designed inUSA
Manufactured InJapan
First Year1969
Last Year1975
Wood CaseIntegral
Blue FaceYes
Speaker ConnectionsTwo Sets
Chassis GroundKnurled Screw
AC SwitchYes
FusingCircuit Breaker, rear deck
Switched AC OutletsOne
Power Consumption70 watts at idle, 130 watts at full power

Panel Width17" 23/32nds
Panel Height4" 1/16th
Width18" 29/32nds
Height5" 3/64ths
Depth17" 1/8th
Weight35.2 lbs

RMS Power Per Channel30 watts at 4 and 8 ohms, 15 watts @ 16 ohms, Unconditionally stable
Damping Factor @ Load Impedance30 minimum
Total Harmonic Distortion (THD)0.30 % max
Power Bandwidth20 Hz to 20 KHz
Frequency Response20 Hz to 20 KHz, +/- 0.5 dB
Hum and Noise-80 dB
Intermodulation Distortion (IM)0.30 % max
Input Sensitivity for Full Output100 mV

FM Tuner
Gyro TuningYes
RF Sensitivity2.8 uV
300 Ohm Binding PostsYes
Ultimate Quieting-60 dB @ 1000 uV
THD, Mono0.50%
Stereo Subcarrier Rejection48 dB
SCA Suppression50 dB
Stereo Separation at 1 kHz35 dB
Mono SwitchYes - but works in reverse - "stereo"
Signal Strength MeterYes
Stereo LampYes
Muting SwitchYes
Muting AdjustmentRear Deck

AM Tuner
Antenna binding PostsYes

Single Bass AdjustmentYes
Single Treble AdjustmentYes
Low FilterYes
Gain ControlYes
Loudness ContourSwitch
MonoYes (but works in reverse... called "stereo")
Number of Tape MonitorsOne
Auxillary Input SourceYes
Phono Input SourceYes
Tuner Source InputAm/Fm
Tape MonitorYes
Headphone Jack(s)Yes
Speaker Selection NomenclatureSystem 1, System 2
Hum and Noise-74 dB at phono with inputs shorted
Signal to Noise Ratioas dynamic range: 98 dB, phono to tape
Channel Separation35 dB minimum

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