Groovy Guitar Amp - Page 14

chris661 · 26th February 2011, 09:36 PM

Aye, you could probably make a fair amount of money making and selling guitar amps.

They do sound good. Very good. How much do you charge?

If you wanted to mess with the distortion, I'm told changing the diodes in the feedback loop will change the sound drastically. Try more than one diode in series and you can get asymmetrical clipping, which gives an interesting sound.

Chris

MJL21193 · 27th February 2011, 11:58 AM

Thanks Chris!

No plans to go commercial (that would ruin the fun, no doubt) and the smaller one is gone - to it's new owner. Parting with it was hard...
I don't know if you saw it, but HERE I designed the preamp for 'The Steamer' and I must say that I'm VERY pleased with the results. I'm so pleased, that I'm going to redo (again!!!) both channels in this amp to this new configuration. The distorted channel will get some extra attention, but the clean will be the Steamer preamp without changes.

firechief · 27th February 2011, 01:41 PM

Just watched it. Your friend has a beautiful 335. The amp turned out great. Now =how about a tube amp ?

MJL21193 · 27th February 2011, 02:18 PM

My friend thanks you

and I thank you

No plans (ever) to build a tube amp but I have something else I've been toying with that involves a high voltage (200V+) output stage and an output transformer. I think that some of the 'magic' attributed to tube amps is imparted by the output transformer. Also, tough to clip an output stage that has that kind of voltage swing. I haven't decided if it will be single ended or push-pull.

chris661 · 27th February 2011, 08:18 PM

John, it'd be easy enough to rig up a 1:1 transformer, using something with suitably rated dual secondaries. I found each transformer sounds different, but it'll probably give you an idea of what they do to the sound.

200v is a lot, though. I should know...

MJL21193 · 27th February 2011, 09:38 PM

It is a high voltage/low current idea that I may or may not try. I don't think I'd bother putting a transformer on the output of a regular power amp.

26th February 2011, 09:36 PM	#131
chris661 diyAudio Member Join Date: Feb 2008 Location: Lancashire Blog Entries: 7	Aye, you could probably make a fair amount of money making and selling guitar amps. They do sound good. Very good. How much do you charge? If you wanted to mess with the distortion, I'm told changing the diodes in the feedback loop will change the sound drastically. Try more than one diode in series and you can get asymmetrical clipping, which gives an interesting sound. Chris __________________ "Throwing parts at a failure is like throwing sponges at a rainstorm." - Enzo My setup: http://www.diyaudio.com/forums/multi...tang-band.html

27th February 2011, 08:18 PM	#135
chris661 diyAudio Member Join Date: Feb 2008 Location: Lancashire Blog Entries: 7	John, it'd be easy enough to rig up a 1:1 transformer, using something with suitably rated dual secondaries. I found each transformer sounds different, but it'll probably give you an idea of what they do to the sound. 200v is a lot, though. I should know... __________________ "Throwing parts at a failure is like throwing sponges at a rainstorm." - Enzo My setup: http://www.diyaudio.com/forums/multi...tang-band.html

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27th February 2011, 11:58 AM	#132
MJL21193 Account disabled at member's request Join Date: Mar 2007	Thanks Chris! No plans to go commercial (that would ruin the fun, no doubt) and the smaller one is gone - to it's new owner. Parting with it was hard... I don't know if you saw it, but HERE I designed the preamp for 'The Steamer' and I must say that I'm VERY pleased with the results. I'm so pleased, that I'm going to redo (again!!!) both channels in this amp to this new configuration. The distorted channel will get some extra attention, but the clean will be the Steamer preamp without changes.

27th February 2011, 01:41 PM	#133
firechief diyAudio Member Join Date: Sep 2008 Location: Near Seattle Wa	Just watched it. Your friend has a beautiful 335. The amp turned out great. Now =how about a tube amp ?

27th February 2011, 02:18 PM	#134
MJL21193 Account disabled at member's request Join Date: Mar 2007	My friend thanks you and I thank you No plans (ever) to build a tube amp but I have something else I've been toying with that involves a high voltage (200V+) output stage and an output transformer. I think that some of the 'magic' attributed to tube amps is imparted by the output transformer. Also, tough to clip an output stage that has that kind of voltage swing. I haven't decided if it will be single ended or push-pull.

27th February 2011, 09:38 PM	#136
MJL21193 Account disabled at member's request Join Date: Mar 2007	It is a high voltage/low current idea that I may or may not try. I don't think I'd bother putting a transformer on the output of a regular power amp.

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