Chip amp problems...maybe.

jamesjmcgee · 3rd May 2009, 11:43 PM

I finished my first 3886 and I hooked it up to my little mp3 player and it worked great. I hooked it to my guitar and nothing... Is a powered input a must? Or did I do something wrong?

jamesjmcgee · 4th May 2009, 12:09 AM

I forgot to add, Its a board I made myself. No pot installed.

wwenze · 4th May 2009, 02:20 AM

Yes, guitar needs powered input.

Rainwulf · 4th May 2009, 10:11 AM

Your guitar also might be a balanced output.

AndrewT · 4th May 2009, 11:01 AM

you must provide a load that the guitar can drive.

i.e. the amplifier that the guitar feeds must have an input impedance specifically suited to your guitar.
The volume that comes out will be determined by the gains of the following amplifier chain.

3rd May 2009, 11:43 PM	#1
jamesjmcgee diyAudio Member Join Date: Jan 2009	Chip amp problems...maybe. I finished my first 3886 and I hooked it up to my little mp3 player and it worked great. I hooked it to my guitar and nothing... Is a powered input a must? Or did I do something wrong?

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4th May 2009, 12:09 AM	#2
jamesjmcgee diyAudio Member Join Date: Jan 2009	I forgot to add, Its a board I made myself. No pot installed.

4th May 2009, 02:20 AM	#3
wwenze diyAudio Member Join Date: Mar 2008	Yes, guitar needs powered input.

4th May 2009, 10:11 AM	#4
Rainwulf diyAudio Member Join Date: Feb 2009	Your guitar also might be a balanced output.

4th May 2009, 11:01 AM	#5
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	you must provide a load that the guitar can drive. i.e. the amplifier that the guitar feeds must have an input impedance specifically suited to your guitar. The volume that comes out will be determined by the gains of the following amplifier chain.