Pioneer SX-580

Aug 26th, 2016 Posted in Pioneer, SX-580 | 1 Comment »

Pioneer SX-580 Faceplate

 

This little Pioneer SX-580 was the bottom of the line from Pioneer around 1979. It only produces 20 watts per channel and has minimal features. Still, it's a good little receiver for an entry level unit. It's not going to be enough to power large speakers but for a garage or small room it could work well.  I believe they retailed for about $250 when new.

 

Pioneer SX-580 Knobs

 

As you can see they have the stereotypical look of late 70's Pioneer receivers with the silver face and white dial. Pioneer also produced the SX-590 which was essentially the same receiver only with a black dial face.

 

Pioneer SX-580 Dial

 

The SX-580is fairly small at 17.5" x 12.5" x 5.25" and weighs in at just over 18 pounds. If you need a service manual you can find it at HiFiEngine.

 

Pioneer SX-580 Lamps

 

Looks good with the lights off and the dial lit doesn't it? The white dial face and amber lighting give it a sophisticated look.

 

Pioneer SX-580 Inside

 

The Pioneer SX-580 came out just near the end of the hi fi boom in the late 1970's. The build quality for these units was still good and their performance excellent. During the following years cost cutting measures resulted in lesser quality units.

 

Pioneer SX-580 Inputs

 

Purchasing an SX-580 isn't going to break the bank. A lot of them were made and collectors tend to avoid entry level units so prices are pretty reasonable. If you just need a small receiver with a little power then the SX-580 might work for you. A nice and clean,m serviced unit will run about $150 with average working units running about $100.

 

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Pioneer SX-737

Feb 10th, 2016 Posted in Pioneer, SX-737 | No Comments »

Pioneer SX-737

 

The Pioneer SX-737 was a mid to higher end stereo in their lineup of the SX-424, SX-535, SX-636, SX-737, SX-838 receivers. Produced in 1974 it churns out 35 watts per channel. Pioneer advertised it by saying: It has the power to do the job - not too much and not too little.  That about sums it up. It retailed for about $300.

 

Pioneer SX-737 Meters

 

The SX-737 really is a nice looking receiver. The blue dial light and meter are accented by red and green indicator lights. Add in the wood cabinet and brushed aluminum face plate and it exudes that vintage audio look.

 

Pioneer SX-737 Knobs

 

It has the usual array of features one would expect in a mid range stereo. The FM front end is equipped with a frequency-linear 4-gang variable capacitor and dual-gate MOS FET. FM reception stability is enhanced by its multiplex demodulator with the Pioneer's PLL (Phase Lock Loop) circuit.

 

Pioneer SX-737 Inside

 

One interesting feature of the SX-737 that you don't see on many other receiver of the time is the Recording Selector option that allows the user to record an FM station while simultaneously listening to an LP, or vice versa. The build quality of the SX-737 was good but they are known for blowing output transistors occasionally. Over 40 years after it was introduced they usually need some of the electrolytic capacitors replaced in order to function as they should.

 

Pioneer SX-737 Back

 

Pioneer receivers are always popular and the SX-737 is no exception. They sold quite a few of them so they aren't rare. But, the desirable mix of aesthetics and performance make it a good receiver for vintage audio enthusiasts. A really nice, serviced, fully functioning SX-737 will sell for about $250 to $300. But, an average good working unit can be had for $150 or so.

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