dual ruby on 18v

[christobean]

i am building a dual ruby by purpletheory, which runs on 9v with a 9v regulator, but i have an 18v power supply, so i would like to use that to give it some extra power.
would this cause any problems? and if so, what?
thanks

[bancika]

Check out which one 386 you have, IIRC only N4 can take 18V (or maybe even 15V)

[christobean]

i have LM386-4's

[TheBigMan]

Should be fine, I run my Ruby at 18V with an LM386-N4.  An MPF102 should be able to handle 25V, so all you need to check is the voltage ratings on your caps.  It'll be very clean though, almost Twin-esque, at 18V.  Mine just will not break up.

[christobean]

what i plan to do is have 2 separate pots controlling gain for the 386s because i dont have a dual pot.  do you think this would be able to create some interesting tones?

[TheBigMan]

Dunno to be honest.  I've built a Little Gem MKII but I haven't got around to put a gain pot on it.  I do have a dual-ganged pot for it, just haven't wired it up.