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Old 24th December 2009, 05:51 AM   #1
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Default Upgrading Transformer in Crate Practice Amp

I'm looking to replace the transformer in my Crate GTD15 practice amp for something with a little more oomph. I'd like to be able to use it as a small head amplifier, but its 15 watts makes it very limited. As it stands, is simply clips when given any significant demand running an external speaker.

What's in it is a 24vac, .625a transformer, and what I have is a 13.5vac, 3.5a transformer. The new transformer has roughly 3 times the mass of the old one, and is pushing a lot more wattage.

Now, I know very, VERY little about this kind of electronics. I do know that if I used a higher voltage transformer that it would be dangerous. What I don't know is if using the lower voltage, higher amperage transformer will yield better results, and if there's any danger in the higher amperage.

What do you guys think?
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Old 24th December 2009, 07:21 AM   #2
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Nevermind, I guess something's wrong with the preamp stage. It's all overdriving like mad with the stock transformer. I'm thinking I must've run too loud of line level out of my distortion box and killed it. Shoot.
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Old 24th December 2009, 01:12 PM   #3
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Join Date: Apr 2008
Location: Carlisle, England
I think i would be starting again with something considerably more powerful.
Just increasing the transformer is not the way to go.
There are loads of designs on DIYAUDIO if you do a search.
Murton-Pike Systems PCBCAD51 pcb design software. http://www.murtonpikesystems.co.uk
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