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Date:   Wed, 11 Aug 2004 09:39:02 -0700
Reply-To:   Vince S <gipsyflies@COMCAST.NET>
Sender:   Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:   Vince S <gipsyflies@COMCAST.NET>
Subject:   Re: Aux. Battery-Stereo Amp question
Comments:   To: Mark Cumnock <kayakwesty@YAHOO.COM>
In-Reply-To:   <vanagon%2004081111241363@GERRY.VANAGON.COM>
Content-Type:   text/plain; charset="us-ascii"

Mark,

So indeed you have a microwave :-)

The aux battery will have no problem supporting the 300W amp. Unless you plan to listen to test tones any musical material will only draws well under 6-7 amps average current at most even if you play it at an ungodly loud level. Most audio amplifiers are class AB and a 300W amp will probably draws 500mA to 750mA tops unless it is very poorly made. Most of this current is used by the internal DC/DC inverter which steps up the voltage.

My Alpine 200W bridged amp and head unit draws around 1.5A average combined at low volume setting.

- Vince

http://gipsyflies.home.comcast.net 1989 Vanagon GL Camper 1996 Land Rover Discovery 2005 Mini Cooper S

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Mark Cumnock Sent: Wednesday, August 11, 2004 8:20 AM To: vanagon@GERRY.VANAGON.COM Subject: Re: Aux. Battery-Stereo Amp question

The Aux Battery will be directly wired to the inverter,mounted behind the driver seat on the cabinet .

The cig lighters , will be wired into aux battery so a solar charger can back feed the aux battery and charge it while camping.I have made a fuse panel to feed the extra circuits that will be powered off the aux battery.

The inverter use will be for a microwave, that will have short use(5 mins or less)...1200 watt is recommended. I am going 1800 watt for an upper margin.

So my question . Is a 300 watt stereo amp to much to ask of the aux. deep cycle battery going down the road , with the radio and xm unit tied into the aux battery and a small fan to help blow cool air up front.

The aux battery gets its power from a 10 awg wire from the relay under the driver's seat. Since the battery stores electrical energy ...that is why I am asking this , if it were just a straight feed off the 10 awg wire the standard answer would be no....

Has anyone else tried this??


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