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Old 25th March 2013, 04:50 PM   #11
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you are right...

this is the 7294's project I was thinking: LINK
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Old 25th March 2013, 05:46 PM   #12
wazzy is offline wazzy  Zimbabwe
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Default Generalguitargadget board.

Two boards both with basic components for proof of concept, made them with the toner transfer off photo paper method. I have since changed the components to 'better' ones still using the same pcbs and I'm happy with the sound. I am using 4ohm speakers as well.
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Old 25th March 2013, 06:31 PM   #13
JMFahey is offline JMFahey  Argentina
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Cool. Congratulations.
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Old 26th March 2013, 10:21 AM   #14
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hi to all, thanks for all replies!

ok, I think I can start with the GGG project!

Concerning the PSU, I've found this schematic from chipamp: http://chipamp.com/images/ps-rev3-sch.gif

Question 1: the +pgnd & -pgnd need to go to the chassis togheter? If you know some simplest schematic (but good too) please let me know...

Question 2: As reported here HERE, to have a +-35Vdc (in order to get 50w into 8ohm), I need a transformer with 25 Vac at secondary.Is it right? How much VA are recommended?

Last edited by ciscothehellspawn; 26th March 2013 at 10:24 AM.
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