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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Soundlab @ 12volts
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alieneYe



Joined: Jul 25, 2008
Posts: 38
Location: Phoenix, Az

PostPosted: Thu Aug 16, 2012 8:00 am    Post subject: Soundlab @ 12volts Reply with quote  Mark this post and the followings unread

hello all,

i recently change the power supply for my Soundlab+ from 9v to 12v. the higher voltage makes this bad boy sound really fat.

the only thing i am having trouble with now is the octave range. at 9v i could get a good 6 octave from it. at 12v i'm only getting 4.

anyone know if i should be looking at changing any resistor (or other component values) with the increased voltage? perhaps the 475ohm resistors in the 1v/oct section?

thanks for any help and advice.
t
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Feifer



Joined: May 16, 2012
Posts: 46
Location: San Diego

PostPosted: Mon Aug 20, 2012 11:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi. When you say range do you mean the "in tune" range? i.e. 1V/oct range? Because I'd say 4 octaves is still pretty good if your using the mark I. Better than mine ended up doing once I switched to 12V.

If you mean actual frequency range than going up to 12V should actually expand it. I had to redo some resistors on mine because there was too much sub/ultrasonic area in my frequency pot.
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alieneYe



Joined: Jul 25, 2008
Posts: 38
Location: Phoenix, Az

PostPosted: Tue Aug 21, 2012 6:18 am    Post subject: Reply with quote  Mark this post and the followings unread

1v/oct is what i speak of. Yeah 4 octaves is good, and it works like a champ, just thought i'd throw out the question to see what others thought.

the filter sounds super fat, i did have to add a resistor to the cutoff pot lug that gets the negative voltage. after i changed it to 12 volt the cutoff knob had a lot of "dead space" in the couterclockwise position. once i put the res in the range tightened right up
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