volume control schematic please

[paulfk]

I did a search really I did, so sorry for this if its been done a thousand times. I have a 20w/channel gainclone and want to wire in a volume control. I have been told that it goes between the input and output rca's.the volume control I have been looking at has signal input and signal output terminals, so am I right in guessing, rca input to signal input and so on. Also what size control do I need for 20w amp. i.e 50k, 100k, etc. Another potion is a shunt mod, any info on that would be nice too.

 

[Beftus]

Read this: http://sound.westhost.com/project01.htm

 

[tinitus]

Fore the B1 Nelson Pass also suggest a linear pot, probably because its cheaper and have better channel tracking than a cheap log

Its actually a "integrated" passive you suggest, so I think you should look fore 10-20Kohm

Monopots could be an option, but may not be very practical, and mostly a choise fore hardcore enthusiasts

 

[Peter Daniel]

I tried linear pots with GC but they didn't really work well.
With log pots, the value shouldn't be higher than 50k, 25K is preferrable if installed directly on the amp.

http://www.diyaudio.com/forums/showthread.php?postid=1516258#post1516258

 

[tinitus]

I have been told that it goes between the input and output rca's.the volume control I have been looking at has signal input and signal output terminals, so am I right in guessing, rca input to signal input and so on.

No, it goes in between input RCA connector and INPUT on your amp module

If you have a switch fore multiple signal source, it goes between this input switch and INPUT on amp module

But even with some experience I also sometimes find these things a bit confusing
Maybe why a preamp isnt always the best place to start fore a newbie


You can measure and find the ground pin
The one that doesnt change impedance when turning the pot should be input, and the other that does change would be out to amp
I hope Im right on this

 

[paulfk]

Re: Re: volume control schematic please

No, it goes in between input RCA connector and INPUT on your amp module


I thought that didn't sound right. I may have just misunderstood what I was told. thanks

 

[tinitus]

Re: Re: Re: volume control schematic please

I thought that didn't sound right. I may have just misunderstood what I was told. thanks

[/B]

The "wrong" advise you got was actually right....that is if you were building a passive preamp
Your situation is different

 

[Nuuk]

This may offer you some help as well!

 

[AndrewT]

as usual, Nuuk has already published the answer.

 

[jamesjmcgee]

Pedja's DS1802 circuit

Does anyone have a copy of Pedja's DS1802 circuit? His pages are no more... and I would like to use these samples I was given.

Thanks
James

 

[jamesjmcgee]

Hmmm well anyone know of any schematic that I can use the ds1802 for a simple stereo volume control in a chipamp?

 

[Ted205]

you could try a Lightspeed Attenuator

 

[kvant]

Re: Pedja's DS1802 circuit

Does anyone have a copy of Pedja's DS1802 circuit? His pages are no more...

The page can still be had through web.archive.org .

 

[jamesjmcgee]

Thanks, found it.
I was hoping on something that didnt require anything special, the tl431's... (I dont have any) I may just use my 5v regulator and a regular gnd. and hope for the best....

 

[jamesjmcgee]

Do the inputs for the ds1802 need any resistors or caps or do they just go straight in?

Thanks