Opublikowano: 13 luty 2010

Kategoria: Amplitunery
Producent: Pioneer
Dodany przez: elektrospiro PL


The SX-1250 was introduced in 1976 as Pioneer\'s top-of-the-line receiver. It reflected Pioneers new styling of matching silver tuning dial with white background signal strength and stereo signal meters. It was Pioneer\'s most powerful and feature-laden receiver that year, capable of pumping out 160 watts per channel. It was beautifully finished in walnut veneers and solid walnut trim. It had a list price of $900.00 and tipped the scales at 65 pounds.
The SX-1250\'s beauty was more than skin-deep. As Pioneer\'s best receiver, the engineers lavished a major design engineering budget in designing it. With the covers off, you can see the careful and logical layout of the receiver\'s hefty toroidal transformer and four massive capacitors, flanked by the component circuit boards. Pioneer designed large wrap-around heatsinks to dissipate the SX-1250\'s full-tilt operating temperature.

The SX-1250 was the largest receiver Pioneer had ever built up to that time. The view with the cover off shows why: the engineers needed every square inch they could get to package the components. The receiver measured 22.0 inches wide, 18.75 inches deep, and 7.50 inches high.

The quality, power and good looks of this receiver not only made it a popular choice for buyers in 1976 and 1977 when it was offered, it is one of the most sought-after Pioneer receivers today.
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Recenzje użytkowników

Użytkownik: mareks

zgadzam się, piekne klasyki,

ale wiem, ze kolega elektrospiro nas jeszcze zaskoczy wieloma ciekawymi modelami :), widziałem na jakim forum zdjecie jego MARANTZROOMU,
szczerze mówiąc myślałem, że posiada tylko same marantze, a tu prosze :):)

Użytkownik: Zibizam

Do Elektrospiso

Piękna kolekcja budząca szacunek dla właściciela-gratulacje.
Użytkownik: piootr

Information about this special receiver

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

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

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

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

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

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

źródło: www.classic-audio.com
Użytkownik: piootr

10 stars

stan igła, ostatnia foteczka robi wrazenie :)
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