Suitable volume pots for DIY Pass Pre amps

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#21
OP asked ........ and I can't see many are using MUSE

besides - where is da fun , if you're using multilegged fuse with predictable distortion , when you can use hairy big chunk of iron ........... with unpredictable distortion
corrected - two chunks of hairy iron , for stereo

:rofl:

though , that one being tricky for mass production and remote controlling
 
#22
Zen Mod said:
OP asked ........ and I can't see many are using MUSE

besides - where is da fun , if you're using multilegged fuse with predictable distortion , when you can use hairy big chunk of iron ........... with unpredictable distortion
corrected - two chunks of hairy iron , for stereo

:rofl:

though , that one being tricky for mass production and remote controlling
Click to expand...

....coming from u i stand corrected...fun factor....😀

but the reason u dont see so many using muse is because they are so hard to get....and not exactly cheap.

...😎

...as usual you speak seriously and are usualy right ?!?!....by joking....yes reason for MUSE's existance is mass production.....but so was TDA1541......hehehehe
 
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#23
Russellc said:
I see its a four pole. I see your pre was unbalanced did you just ignore the other 2 channels, and leave them unconnected? Otherwise, how did you wire it to your 2 channel pre? Thanks guys,

(maybe I'm confused, I am assuming "4 Poles" means four channels? If its only 2 then that clears things up...)

Russellc
Click to expand...



go and read , I didn't googled for my needs

speaking of 4 pole switch needed for stereo ladder type att. :

you need one pole for series resistor , second pole for shunt resistor

third and fourth pole for same - for second channel

all that when speaking of SE ; in case you need balanced ladder type ...... you can be creative and choose some other possible scheme of attenuating , involving anything from 3 to 8 resistors per step , per balanced channel
 
#24
Zen Mod said:
go and read , I didn't googled for my needs

speaking of 4 pole switch needed for stereo ladder type att. :

you need one pole for series resistor , second pole for shunt resistor

third and fourth pole for same - for second channel

all that when speaking of SE ; in case you need balanced ladder type ...... you can be creative and choose some other possible scheme of attenuating , involving anything from 3 to 8 resistors per step , per balanced channel
Click to expand...

Oh, Im reading, especially the "Tip 67" with Mr Noble. Its going to take me a while to absorb this and I dont know if that will clarify enough to do this 4 pole trickery in actual use. I'll read it more and otherwise will just use stereo pot. This is a hobby for me, my day job hasnt anything to do with electronics, I do law as a trade...not much help here! But I will muddle on to be sure. If it doent come clear enough to execute, I'll stick to simple pot. It struck me as interesting, thats why I inquired.🙂

Do appreciate the articles, thank for those,

Russellc
 
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#27
Bigun said:
You mean it stopped working after only 3 - 4 years ?
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No, ive had it for 3 or 4 years...still working now. These things are all over ebay....look to be the same manufacturer. Sometimes they come with dale resistors or at least claim to. Also they can be bought from analogmetric. I would also consider the dact type smd pots all over ebay. But I believe they use a resistor in series method of controlling the volume.

Either way, if you have a dubious ground scheme these things can pop and click when in use. Also, they can ge. Noisy when dirty.
 
#29
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#31
DACT Type SMD Stepped Attenuator 21 step

Dact Type SMD Stepped Attenuator 21 Step | eBay

$T2eC16F,!)cE9s4PsNiSBRnlsJR+rg~~60_1.JPG


$T2eC16h,!ysE9sy0kzGKBRnlsK3WF!~~60_57.JPG

This british succesful passive pre-amp uses it!

Tisbury Audio Mini Passive Pre Amp Stepped Attenuator Preamplifier | eBay

$_57.JPG
 
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#32
Zen Mod said:
plenty of tutorials around

An externally hosted image should be here but it was not working when we last tested it.


ladder attenuator diy - Google претрага

Tip_67

http://diyaudio.co.kr/wwwboard1/data/board1/compare.pdf

I wouldn't put two decks in parallel

buy 4 pole and make stereo ladder type
Click to expand...

Very nice articles, makes understanding clear...problem is in converting words and flat pictures into use for 3 dimensional object. The picture montage actually has a picture of what appears to be my pot, except mine has a circular board on ends instead of plain wire.

Anyone have a pic of one hooked up? Hakari1 gave me this one, which from where I came up with hook ups in my pics. (scroll down)

Tone Controls etc. Any one use them? If so,why? | Page 4 | Steve Hoffman Music Forums

Zen Mod, I suppose you are saying my hook up in pics isnt right yet?😱

Russellc
 
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