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Hi,
I am pretty new to all of this, i have built a sex amp and am plotting my foreplay kit in a custom chassis. I would like to have a stereo/dual volume control as I know my wife would go crazy with the two.
My current preamp (juicy music blueberry) has a psuedo balance control in it along with the volume control. basically two mono pots that must then flow into the stereo attenuator. I am trying to understand how that must work and how it would work in a foreplay. if the foreplay stock pot was 100k, the first mono pots must be 100k, as it turned all the way down will stop all signal, the second stereo pot would then have to be 100k as well? as even with the first mono pots up to full, the signal can be shut down with them? since the mono pots would only be for balance, I could use the stock foreplay pots and then run them into a stereo pot?
am I making any sense? can someone confirm if I am headed in the right direction here?
thanks
Tim
Follow Ups:
http://glass-ware.stores.yahoo.net/netcjstat.htmlLooks like you add your own resistors. You can set it up for a total of 35db attenuation in 1db increments or 70db in 2 db increments. Or you could probably customize it in any way you want.
Of course if the center switch alone didn't have a large enough range it would probably just cause more problems for the wife. This would probably work better with 12 or 24 postitions on the stereo switch and the 6 fine steps on the monos for balance adjustment.
[Edit]
Here is something else I found if you just wanted to add a single balance control. Go down the section titled 'Changing the law of a Pot' (fig.9) A dual gang linear pot is the key element. It looks relatively simple.
Edits: 09/13/09
The attenuator configuration between the two units is very different.
On the Foreplay III, you could put in 500k trimmers in place of the input series resistors. These could be used to balance level differences in individual components and the preamp output, but they would have to be mounted under the chassis in a "set and forget" configuration.
-Paul
if you're new, best advice imho is build it stock, get any troubleshooting done, then there are a number of ways you can go.
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