Pioneer Model SX-1250 Receiver

Front View Image Attribution: Unknown Ebay Auction Date: March 13th, 2000 Rear View Image Attribution: Unknown Ebay Auction Date: March 13th, 2000

General Description Receiver Rarity Scarce Designed in Japan Manufactured In Japan Wood Case Walnut Veneer Channels Two IC Count 6 FET Count 5 Transistor Count 86 Diode Count 59 Speaker Connections Three sets AC Switch Yes

Physical Width 21 7/8 Height 7 3/8 Depth 18 3/4 Weight 64 lbs

Amplifier RMS Power Per Channel 165 into 8 ohms, 200 into 4 ohms, 20 Hz to 20 KHz Damping Factor @ Load Impedance 30, 20 Hz to 20 KHz into 8 ohms Total Harmonic Distortion (THD) 0.1% at full rated power into 8 or 4 ohms, no more than 0.05% at 80 watts/channel Frequency Response 5 Hz to 100 KHz, + 0 dB, - 1 dB Hum and Noise 100 dB Intermodulation Distortion (IM) No more than 0.1% at full rated power, no more than 0.05% at 80 watts/channel

FM Tuner RF Sensitivity 1.5 uV (8.7 dBF) 300 Ohm Binding Posts Yes 75 Ohm Binding Posts Yes 50 dB quieting sensitivity, Stereo 35 uV, 36 dBF 50 dB quieting sensitivity, Mono 2.1 uV, 11.5 dBF THD, Mono 0.1% THD, Stereo 0.2% Signal to Noise Ratio, Mono 80 dB at 65 dBF Signal to Noise Ratio, Stereo 74 dB at 65 dBF Frequency Response 30 Hz to 15 KHz, + 0.3 dB, -1 dB Capture Ratio 1.0 dB IF Image Rejection 110 dB IF Rejection 120 dB Stereo Subcarrier Rejection 74 dB SCA Suppression 74 dB Alternate Channel Selectivity (wide or normal) 83 dB Spurious Rejection 110 dB AM Carrier Rejection 60 dB Stereo Separation at 1 kHz 50 dB Mono Switch Yes Signal Strength Meter Yes Center Tuning Meter Yes Stereo Lamp Yes Multipath Listen Yes Muting Switch 2.5 uV (13 dBF) fixed Quadradial Output (FM Discriminator output, unequalized) Yes

AM Tuner RF Sensitivity 300 uV/meter or 15 uV with external antenna Alternate Channel Selectivity 40 dB IF Rejection 85 dB Image Rejection 65 dB Signal to Noise Ratio 55 dB

Preamplifier Multiple Bass Adjustments +/- 10 dB at 100 Hz, and +/- 5 dB at 50 Hz Multiple Treble Adjustments +/- 10 dB at 10 KHz, and +/- 5 dB at 20 KHz Tone Control Defeat Yes High Filter 8 KHz, 12 dB/octave Low Filter 30 Hz, 12 dB/octave Gain Control Calibrated detent knob Loudness Contour + 6 dB at 100 Hz, + 3 dB at 10 KHz Mono Yes Muting -20 dB Balance Yes Number of Tape Monitors Two Tape to Tape Dubbing Yes Auxillary Input Source Yes Phono Input Source Yes Speaker Selection Nomenclature A, B, C