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Marantz Model 2270 Receiver

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Front View


Rear View
Image Attribution: Michael Sobel
Date: July 29th, 1999


Service Manual
EBay Auction #1209407708
Date: January 21st, 2001

General
Retail Price549.95
Designed inUSA
Manufactured InUSA (Sun Valley), later in Japan
First Year1971
Last Year1975
Wood CaseWC-22
Blue FaceYes
ChannelsTwo
Speaker ConnectionsTwo Pairs
Chassis GroundBinding Post
AC SwitchYes
Switched AC OutletsOne @ 100 watts
Unswitched AC OutletsOne @ 200 watts
Power Consumption500w max, 38 @ idle

Valuation, Purchases, Parts and Manuals

Physical
Width16 7/8
Height5
Depth14
Weight38.5 lbs, 49.5 packed

Amplifier
RMS Power Per Channel70
Damping Factor @ Load Impedance45
Total Harmonic Distortion (THD)0.3%
Power Bandwidth7 Hz - 50 kHz
Intermodulation Distortion (IM)0.3%

FM Tuner
Gyro TuningYes
RF Sensitivity2.3 uV
300 Ohm Binding PostsYes
75 Ohm Binding PostsYes
50 dB quieting sensitivity, Stereo50 uV
Ultimate Quieting57 dB @ 50 uV
THD, Mono0.20%
THD, Stereo0.30%
Frequency Response50-15000 +/- 1 dB
Capture Ratio1.9 dB
Alternate Channel Selectivity (wide or normal)080 dB
Stereo Separation at 1 kHz40 dB
Mono SwitchYes
Signal Strength MeterYes
Center Tuning MeterYes
Multiplex Filter (Hi-Blend)Yes
Attenuator20dB on rear
Stereo LampYes
FM Mode LampYes
Multipath ListenYes
Multipath MeteringYes
Muting SwitchYes
Muting AdjustmentRear deck
Quadradial Output (FM Discriminator output, unequalized)Yes
Illuminated Dial PointerYes

AM Tuner
Signal Strength MeteringYes
External Ferrite AntennaYes
Antenna binding PostsYes

Preamplifier
Multiple Bass AdjustmentsYes
Multiple Midrange AdjustmentsYes
Multiple Treble AdjustmentsYes
High FilterYes
Low FilterYes
Gain ControlYes
Loudness ContourYes
MonoYes (Left, Right)
MutingYes
BalanceKnob
Number of Tape MonitorsTwo
Tape to Tape DubbingYes, plus 3rd deck @ front panel
Auxillary Input SourceYes
Phono Input SourceYes
2nd Phono Input SourceYes
Illuminated Source Indicatorsyes
Tuner Source InputYes (AM, FM sources)
Source Tape Input (as opposed to a tape monitor)Yes
2nd Source Tape input (as opposed to a tape monitor)Yes
Tape MonitorYes
2nd Tape monitorYes
Preamp to Amplifier Jumper(s)yes
Headphone Jack(s)Yes
Speaker Selection NomenclatureMain, Remote

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