Gainclone for guitar

[jeppix]

I know the subject is not new but I've some questions to ask you because I try to read all messages about gainclone but I don't find the answer to my questions.

I'd like to build a gainclone for my electric guitar, so I think to use 1 rectifier PCB, 2 PCB with LM3875TF that amplifyy 2 speakers 100W 8ohm.

I've found (in my garage) a trasformer that have secondary voltage of 24-0-24 and 300VA, is it suitable for the project?

Another question...
I've found a little circuit to control the tone (bass, middle, treble) at http://www.runoffgroove.com/tonemender.html this circuit use DC power (9V).
How could I use the same trasformer of gainclone to power this circuit?

Sorry for the "stupid" questions but 'till now I only make little circuits with 9V battery, for me it's the first time that I use a trasformer

Thank you, and sorry for my awful english

Andrew

 

[moamps]

.....I'd like to build a gainclone for my electric guitar, so I think to use 1 rectifier PCB, 2 PCB with LM3875TF that amplifyy 2 speakers 100W 8ohm..I've found (in my garage) a trasformer that have secondary voltage of 24-0-24 and 300VA, is it suitable for the project?

Hi,
The LM3886 is a better choice for this project. It's possible to use the LM3875 instead but you should use a very good (big) heatsink.

...I've found a little circuit to control the tone (bass, middle, treble) at http://www.runoffgroove.com/tonemender.html this circuit use DC power (9V)....

It's possible to use higher voltage to power this circuit (up to 30V). I suggest that you try a simple regulator based on the 7824 chip (24V), which should be connected to the + output of your amp's nonregulated power supply. The 7824 datasheet can be found easily on the net.

Regards,
Milan