Chipamp for Mobile amplification

ojcool · 26th June 2012, 04:43 PM

Right up front I apologize for my lack of knowledge. I have a couple Brian GT 3886 kits I build a long time ago and never used. I was considering putting them in a boat I have and was curious since there are two batteries I could get 24v DC to them and my question is could I not just eliminate the power supplies and use them at 24v DC?

pacificblue · 26th June 2012, 05:14 PM

There are several options.

1) You have to reconfigure the amp for single supply operation. You will have to modify the PCB and add a few components externally to create the virtual ground.

2) Leave everything as it is, and buy a sine wave power inverter that steps up the DC battery voltage to AC at mains voltage.

3) Build or buy DC to DC converters with the right output voltage.

Arty · 26th June 2012, 08:56 PM

use moooar battery, when the amp is on connected in series, when its of, connected to meet the generator specs. (even small battery will do fine, depending on how loud and how long you want it to be on).
simple relay logic can deal with connecting them.

26th June 2012, 04:43 PM	#1
ojcool diyAudio Member Join Date: Jun 2008	Chipamp for Mobile amplification Right up front I apologize for my lack of knowledge. I have a couple Brian GT 3886 kits I build a long time ago and never used. I was considering putting them in a boat I have and was curious since there are two batteries I could get 24v DC to them and my question is could I not just eliminate the power supplies and use them at 24v DC? __________________ http://www.lookoutbailbonds.com http://www.federatedbailbonds.com

26th June 2012, 05:14 PM	#2
pacificblue diyAudio Member Join Date: May 2008	There are several options. 1) You have to reconfigure the amp for single supply operation. You will have to modify the PCB and add a few components externally to create the virtual ground. 2) Leave everything as it is, and buy a sine wave power inverter that steps up the DC battery voltage to AC at mains voltage. 3) Build or buy DC to DC converters with the right output voltage. __________________ If you've always done it like that, then it's probably wrong. (Henry Ford)

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26th June 2012, 08:56 PM	#3
Arty diyAudio Member Join Date: Feb 2011	use moooar battery, when the amp is on connected in series, when its of, connected to meet the generator specs. (even small battery will do fine, depending on how loud and how long you want it to be on). simple relay logic can deal with connecting them.