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Scratchy controls: the potentiometers that control volume, balance, and EQ need maintenance to function properly that almost was certainly never done. For those reasons it can be assumed a receiver from the 1970s has bad capacitors. Capacitors have a shelf life of anywhere from 10 to 30 years, but a usable life of 1000 to 5000 hours, depending on application and quality. For this reason NEVER PLUG IN AN OLD RECEIVER RIGHT AWAY. When power is put through them, they heat up, boil the liquids inside, and go boom. Paper capacitors tend to change their values, while electrolytics break down chemically and essentially turn into a resistor.
Old capacitors: electrolytic and paper capacitors degrade with age. These issues stem from the limited lifespan of certain components. There are a few issues that almost any old receiver will have, even if they had been well taken care of by the previous owner. I picked it up in working condition for 30 dollars from a local antique store. This receiver was op of the line in 1974, with a list price of $399 dollars. Here, I'm going to use the rebuilding of my Sherwood S-8900 as an example. Since they often don't deal with vintage audio equipment, it can be purchased at a good price. Many have old audio equipment kicking around. eBay is probably the most obvious choice, thought for a good value take a look at local thrift shops and antique shops. When it comes to where to find a receiver, there are many options. Burned resistors are no biggy, but burned transistors can be a complete roadblock, with certain transistors no longer being available and equivalents being hard to determine. Also, burned out components can sometimes be an issue. Blown bulbs are also expected, and should not lend much to the decision. Bad caps and scratchy controls, however, are not a major problem and are easy to repair. If there is a bad transformer in the power supply, walk away. There are other great brands out there so do your research. Some good brands to be on the lookout for include: McIntosh, Sansui, Pioneer, Sherwood, Marantz, Kenwood, Onkyo, and Yamaha. The golden age of receiver quality is often thought of as being from 1970 to 1985 (ish). When it comes to selecting a vintage receiver, there are a few considerations to make.
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If you find a free download, or even one for a couple bucks, it might just save your project from the scrap heap.
#Hi fi stereo equalizer manual#
Also, try finding a repair manual on Google. and are both great resources, but a simple google search can turn up much information. There may be questions or issues that you stumble upon specific to your receiver. A word to the wise: this Instructable, as I said, is a general guide. This Instructable serves as a basic guide to selecting of a vintage receiver and general repairs that need to be done to bring it back on line.
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But a vintage receiver in need of repair will run you about 30 bucks, and can be brought back to better-than-factory condition for about 50 to 70 dollars, plus a couple hours of your time. A modern receiver with that level of sound quality is near impossible to find at that price. Value: A high end, restored vintage receiver will run you between 100 an 350 dollars usually. Vintage receivers were usually built with the intention of being repaired when they break. But often, modern receivers are unrepairable with surface mount components and other construction methods. They require maintenance, but so do modern receivers. Repairability: a vintage receiver will last a lifetime.
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Beyond that, the sound is often thought of as being more lifelike, dynamic, or full by some. Sound quality: vintage receivers often have very low harmonic distortion that often rivals modern receivers. They use high quality materials (often all metal) and wood too. Vintage receivers are better than modern receivers with the same features for a few reasons:īuild quality: vintage receivers are solidly built. Vintage is generally preferable, as long as you don't need satellite radio, an iPod dock, wireless streaming or other superfluous features. When it comes to receiver choice, there's two main categories: new and vintage. For ultimate simplicity, and cost effectiveness, an integrated amp of receiver is recommended over obtaining and using the individual components. A receiver, or integrated amplifier, is even more involved in its role, as it has source selectors, speaker selectors, equalizers, and often a radio receiver, as well as other functions. The amplifier in an audio system serves as the central command unit in a way, as it takes the audio from the source, amplifies it, and sends it to the speakers.
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