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Pioneer Model SX-1980 Receiver

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Front Oblique View
EBay Auction #1287825996
Image Attribution: miravistajake/EBay
Date: 10/27/01


Rear Oblique View
EBay Auction #1287825996
Image Attribution: miravistajake/EBay
Date: 10/27/01

General
DescriptionReceiver
RarityXXX-Rare
Designed inJapan
Manufactured InJapan
First Year1978
Years Manufactured1978...1980
Last Year1980
Wood CaseYes
Silver FaceYes
ChannelsTwo
Tube Count0
IC Count11
FET Count12
Transistor Count130
Diode Count82
Hall Effect Devices0
Speaker ConnectionsThree Sets
Chassis GroundKnurled screws (several)
AC SwitchYes
FusingInternal
Switched AC OutletsOne
Unswitched AC OutletsOne
Power Consumption1400 watts

Valuation, Purchases, Parts and Manuals

Physical
Width22 1/16ths inches
Height8 5/16ths inches
Depth19 9/16ths inches
Weight88 Lbs 11 ounces

Amplifier
RMS Power Per Channel270 watts
Damping Factor @ Load Impedance40 @ 8 ohms
Total Harmonic Distortion (THD)0.03%
Power Bandwidth20 Hz to 20 KHz
Frequency Response5 Hz to 100 kHz +0/-1dB
Hum and Noise120 dB
Signal to Noise Ratio120 dB
Intermodulation Distortion (IM)0.03% 50/7khz 4:1
Input Impedance50 k ohms
Input Sensitivity for Full Output2 volts
Speaker SelectionA, B, C
DC CapableYes
Meter Range0.01 to 540 watts
Output Meter(s)Dual
External Heat SinksMassive side mounted units
Output Impedance(s)8 through 4 ohms

FM Tuner
RF Sensitivity1.5 uV
300 Ohm Binding PostsYes
75 Ohm Binding PostsYes
75 Ohm F Connectorraw wire binders
50 dB quieting sensitivity, Stereo34 uV
50 dB quieting sensitivity, Mono 2.2 uV
THD, Mono0.07%
THD, Stereo0.10%
Signal to Noise Ratio, Mono83 dB
Signal to Noise Ratio, Stereo74 dB
Frequency Response30 Hz to 15 kHz +0.2/-0.5 dB
Capture Ratio1.0 dB
IF Image Rejection120 dB
IF Rejection120 dB
Stereo Subcarrier Rejection65 dB
SCA Suppression65 dB
Alternate Channel Selectivity (wide or normal)80 dB
Spurious Rejection120 dB
AM Carrier Rejection60 dB
Stereo Separation at 1 kHz50 dB
Mono SwitchYes
Signal Strength MeterYes
Center Tuning MeterYes
Multiplex Filter (Hi-Blend)Yes
Quartz Frequency LockYes, with indicator
Stereo LampYes
FM Mode LampYes
Multipath ListenYes
Muting SwitchYes
25 uS Deemphasis Switch (Dolby Associated)Yes
Station MarkersYes

AM Tuner
AM Mode LampYes
RF Sensitivity300 uV/meter
Adjacent Channel Selectivity26 dB
IF Rejection70 dB
Image Rejection70 dB
Signal to Noise Ratio55 dB
Signal Strength MeteringYes
External Ferrite AntennaYes
Antenna binding PostsYes

Preamplifier
Multiple Bass Adjustments+/- 10 dB @ 100 Hz + +/- 5 dB @ 50 Hz
Multiple Treble Adjustments+/- 10 dB @ 10 kHz + +/- 5 dB @ 20 kHz
Tone Control DefeatYes
High Filter8 kHz, 12 dB/octave
Low Filter15 Hz, 12 dB/octave
Gain ControlLinear stepped in dB
Loudness ContourYes
MonoYes
BalanceYes
Number of Tape MonitorsTwo
Tape to Tape DubbingYes
Auxillary Input SourceYes
Phono Input SourceYes
2nd Phono Input SourceYes (or Microphone)
Illuminated Source IndicatorsYes
Phono Pickup Impedance ControlYes
Cartridge LoadYes
Tuner Source InputIntegral AM/FM
Source Microphone InputYes (or Phono II)
Tape MonitorYes
2nd Tape monitorYes
Adaptor ProvisionSwitch in front, in/out stereo jacks on rear
Preamp to Amplifier Jumper(s)Yes
Headphone Jack(s)Yes
Speaker Selection NomenclatureA, B, C

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