Amps for a 12v battery based sound system

jason_watkins · 29th September 2009, 08:21 AM

Hi Folks,

I'm working on a 12v deep cycle battery based sound system for a friend. Obviously the efficiency of class D amps could be quite useful. What I'd like to know is:
- what class d modules are particularly suited to 12v rails
- if any of the above are stable into a 2ohm load

The lazy solution would be a couple of the dayton tripath amps, but I imagine there's probably better options out there.

Saturnus · 29th September 2009, 09:03 AM

Any Tripath 2020 based amp is optimal as they are 2 Ohms stable with sufficient cooling. The Dayton is not suitable for your use as it's not 2 Ohms stable, and it's also too expensive in my mind compared to paying a little extra for one of the much better Tripath 2020 based amps out there (41Hz, Topping, Hlly and so on).

See link in sig for ideas/solutions.

Buckapound · 29th September 2009, 12:34 PM

I'll second Saturnus' suggestion and toss in the 2021b, which is pretty much the same thing in a smaller package, if space is a concern. It may be found in various 41hz kits like the Amp32. Be advised, it's all surface-mount, and a pretty challenging build. But, it has the footprint the size of a large postage stamp.

--Buckapound

29th September 2009, 08:21 AM	#1
jason_watkins diyAudio Member Join Date: Jul 2005 Location: none	Amps for a 12v battery based sound system Hi Folks, I'm working on a 12v deep cycle battery based sound system for a friend. Obviously the efficiency of class D amps could be quite useful. What I'd like to know is: - what class d modules are particularly suited to 12v rails - if any of the above are stable into a 2ohm load The lazy solution would be a couple of the dayton tripath amps, but I imagine there's probably better options out there.

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29th September 2009, 09:03 AM	#2
Saturnus diyAudio Member Join Date: Jun 2005 Location: Copenhagen, Denmark	Any Tripath 2020 based amp is optimal as they are 2 Ohms stable with sufficient cooling. The Dayton is not suitable for your use as it's not 2 Ohms stable, and it's also too expensive in my mind compared to paying a little extra for one of the much better Tripath 2020 based amps out there (41Hz, Topping, Hlly and so on). See link in sig for ideas/solutions.

29th September 2009, 12:34 PM	#3
Buckapound diyAudio Member Join Date: Feb 2006 Location: Chicago, IL	I'll second Saturnus' suggestion and toss in the 2021b, which is pretty much the same thing in a smaller package, if space is a concern. It may be found in various 41hz kits like the Amp32. Be advised, it's all surface-mount, and a pretty challenging build. But, it has the footprint the size of a large postage stamp. --Buckapound