high low adapter - AVS Forum
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post #1 of 10 Old 03-08-2013, 07:26 PM - Thread Starter
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A friend ask me a question today and I had no clue how to answer it. He would like to connect a amplifier toa older RCA reciver with no preout connection, can he use a high low adapter to connect to the speaker terminals so that he can utilize the amplifier?
Thanks Alan
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post #2 of 10 Old 03-08-2013, 09:33 PM
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Yes he can.
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post #3 of 10 Old 03-08-2013, 10:00 PM - Thread Starter
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is there any particular make or brand to use?
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post #4 of 10 Old 03-08-2013, 10:59 PM
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I dont really think it matters. They are mostly made for car audio applications, so that is often the best place to get them. Here is one: http://www.parts-express.com/pe/showdetl.cfm?partnumber=266-002
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post #5 of 10 Old 03-09-2013, 11:05 PM - Thread Starter
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how much degradation of sound quality would the be with using the adapter.
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post #6 of 10 Old 03-10-2013, 12:16 AM
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I have never used one, but I imagine there would be some loss of quality, just due to amplifying and reducing level, then re-amplifying again.
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post #7 of 10 Old 03-10-2013, 05:14 AM
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Although it's possible, it's not generally recommended. A return question to ask him though is why he thinks he needs to add an external amp? Is his current receiver volume maxed out and causing the speakers to distort? If not, he likely doesn't need the additional amplification.

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post #8 of 10 Old 03-10-2013, 07:00 AM
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Quote:
Originally Posted by aduroseau View Post

how much degradation of sound quality would the be with using the adapter.


The worst thing about the adapter isn't the adapter, but the fact that the signal goes through a power amp. IME experience a good power amp such as is found in AVRs takes from 5 to 10 passes through the power amp to be detectible. This adaptor adds just one pass so there shouldn't be an audible problem. I have some very picky friends who use these in some very large great-sounding systems.
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post #9 of 10 Old 03-11-2013, 10:42 AM
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When I asked some audio engineers about this solution years ago, their reply was that it turned the receiver amplifier in to a voltage amp and that the receiver amp would be loafing and very happy.

BTW, once upon a time, such an accessory was offered by high end home audio companies Carver and Soundcraftsmen.

Jeff
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post #10 of 10 Old 08-26-2013, 12:04 PM
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Sorry to have to bump up this old thread. I ended up building hi-low converters for this Member Aduroseau (ALAN DUROSEAU) by hand and was ripped off and was never paid. (this was in March/April)

I even offered to take the items back and pay for the return shipping but the guy just ignored me once he received the items.

Its a shame. You have to be careful who you are dealing with, even on AVS Forum.

Not sure what my legal options are but I figure the least I can do is warn other members on here.
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