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Grounding the Amp / Double Barrel monsters

 
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gchapman
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PostPosted: Jun 21, 2005 1:38 pm    Post subject: Grounding the Amp / Double Barrel monsters Reply with quote

Just purchase the Double Barrels for the Monster Tower. Where do I send the ground wire? Back to the battery? The amp location is close to the stereo..can I use the same ground as the head unit? Any help is greatly appreciated.
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Brit Rider
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PostPosted: Jun 22, 2005 9:14 am    Post subject: Reply with quote

Ground the Amp on the Negative post of your battery.

Don't use the same ground as the stereo as it won't be able to support the load.

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gchapman
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PostPosted: Jun 22, 2005 9:50 am    Post subject: Reply with quote

thanks, any ideas about battery life with amp load?
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Brit Rider
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PostPosted: Jun 23, 2005 2:32 am    Post subject: Reply with quote

depends on amp and battery.

Ideally your alternator should be able to support the load.

i.e if your amp is throwing out 500 watts it will be roughly using 41 amps.

if you have a 60 amp alternaotr and a newish battery then you are totally fine. I wouldn't use the stereo for long periods with the engine off though.

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bkw4287
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PostPosted: Jun 23, 2005 7:31 am    Post subject: Reply with quote

I've got a brand new battery (2005 boat) and a Kicker 700.5 rated at 900rms power. I'm pushing 4 6.5's, 2 6.5 tower speakers, and a 12" sub off the amp so it is under a decent load. I can get about 4 hrs of play time with the engine off before my battery gets to the danger point.
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Brit Rider
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PostPosted: Jun 23, 2005 7:38 am    Post subject: Reply with quote

bkw4287, 700RMS power Wink
4 x 75rms + 1 400rms sub section

Its the 4 channels that munch the power.. your sub section is MOSFET i believe (Class D) so is pretty efficient.

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bkw4287
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PostPosted: Jun 23, 2005 11:36 am    Post subject: Reply with quote

Brit Rider wrote:
bkw4287, 700RMS power Wink
4 x 75rms + 1 400rms sub section

Its the 4 channels that munch the power.. your sub section is MOSFET i believe (Class D) so is pretty efficient.


Yeah factory specs say 700rms, but I got a birth sheet with my amp that had it rated at 900 rms. Thats why I said 900.

To be exact I'm running everything at 2ohm so my factory specs are
4x85 and 1x420 rms mono.
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gchapman
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PostPosted: Jun 29, 2005 5:01 am    Post subject: Reply with quote

thanks for the replies. 1st day on lake with speakers. 3 hours before battery got to what I consider the danger zone. thanks again.
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