| henrikwidth |
Hi all!
I found an alps pot in an _old_ and broken Yamaha integrated amplifier. I was planning on using it as a passive preamp for my dual mono gainclones from audiosector (premium LM3875) Does anyone have any experiences with this pot and my amps?
Best regards
Henrik |
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| henrikwidth |
| picture of side |
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| Sonusthree |
Hi Henrik and welcome to the forum!!
It looks a lot like a 'Black beauty' except that it it seems to be for more than two channels and maybe five.
Was the Yamaha integrated a surround amp (for home cinema) or is their a balance control? E.G. Does the outside dial control channel balance and the inside controls volume.
The Black beauty is quit an expensive pot. I have the cheaper 'Alps Blue' and that is very good. I haven't tried the 'black' yet.
The 53K should be suitable. Do you know your source impedance?
Martin. :) |
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| henrikwidth |
Hi Sonusthree
Thanks for answering!
Yes, the outer ring is for balance control and the inner is volume, The amplifier from which I got it is a big stereo amp, 30W class A or 200W class something (selectable)
Are there documentation available for these pots? I've tried to search, but my google-fu is a bit low.. ;)
Henrik |
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| Sonusthree |
I've heard somewhere before that the 'Black beauty' is discontinued but I'm not exactly sure.
I think that your pot is a probably a custom model based around the RK27 on this page:
Alps Japan Potentiometers
Google is your friend. ;) |
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| Leolabs |
| How old is the pot??? |
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| henrikwidth |
_very_ old, ill bet it's older than 15 - 20years...
The model it's from is "Yamaha neutral sound amplifier CA-2010" |
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| Sonusthree |
That amp looks at least 20 years old so the pot may be a little worn and noisy but there is no way to know except to try it.
It's quite easy to wire it up and test so why not make a quick prototype. It might just sound fantastic!! |
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| henrikwidth |
Yeah.. as I said it is _old_ ;)
I'll try to wire it up, but I'm still looking for a wiring-diagram..
I know the top two rows are for the balance, but I'm not sure I'll be using that.. or..?
Henrik |
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