preamp with LM3886 poweramp

the3dmonkey · 6th December 2005, 02:18 PM

Hi!

I just recently started getting interested in designing a guitar amp... but as anyone i could use some advice... i'm also wondering about some stuff...

Here's my schematic:

Here are my questions:
- since i'm running the preamp section on +/-15V i guess i can't use the polar capacitors? (the ones at the output of the clean channel and at the input of the tone control)

- should i connect the gnd from the input with the gnd from the power supply?

thank you for your help...

Didier

Andreq · 6th December 2005, 10:13 PM

Hey !!

Im about to do the same as you. Im sure gona build a distortion/overdrive pedal and Building my own EQ + Amp would be nice.

Im not any kind of tech about audio electronic so I can't help.

I just want to tell you that Ill follow your project !

Hope to see more !

the3dmonkey · 6th December 2005, 11:57 PM

Hello

well, i discovered that my schematic has some minor errors in it, i will be adjusting and uploading the new schematic tommorrow if i find the time.
prototyping should be done by the end of the week... since i don't have certain parts now.

anyway, you should know this is my first project and it might as well just fail and cost me a lot of money.
on the other hand so far its already a great learning experience, so i expect to even learn more...

great to know there is some interest in my work.

i also posted all of this at arons forum ( http://www.diystompboxes.com/smfforu...?topic=39664.0 )

many usefull info can be found there too...

keep on rocking!

Dieter.

6th December 2005, 02:18 PM	#1
the3dmonkey diyAudio Member Join Date: Dec 2005 Location: Kortrijk	preamp with LM3886 poweramp Hi! I just recently started getting interested in designing a guitar amp... but as anyone i could use some advice... i'm also wondering about some stuff... Here's my schematic: Here are my questions: - since i'm running the preamp section on +/-15V i guess i can't use the polar capacitors? (the ones at the output of the clean channel and at the input of the tone control) - should i connect the gnd from the input with the gnd from the power supply? thank you for your help... Didier

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6th December 2005, 10:13 PM	#2
Andreq diyAudio Member Join Date: Nov 2005 Location: Here am I	Hey !! Im about to do the same as you. Im sure gona build a distortion/overdrive pedal and Building my own EQ + Amp would be nice. Im not any kind of tech about audio electronic so I can't help. I just want to tell you that Ill follow your project ! Hope to see more !

6th December 2005, 11:57 PM	#3
the3dmonkey diyAudio Member Join Date: Dec 2005 Location: Kortrijk	Hello well, i discovered that my schematic has some minor errors in it, i will be adjusting and uploading the new schematic tommorrow if i find the time. prototyping should be done by the end of the week... since i don't have certain parts now. anyway, you should know this is my first project and it might as well just fail and cost me a lot of money. on the other hand so far its already a great learning experience, so i expect to even learn more... great to know there is some interest in my work. i also posted all of this at arons forum ( http://www.diystompboxes.com/smfforu...?topic=39664.0 ) many usefull info can be found there too... keep on rocking! Dieter.