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Default Amp randomly turns off - Confused

Hey, I'm having a rather strange issue, and it's starting to give me a
headache. Ok, some background information.

Audiobahn Bandpass Box
2x 12" Audiobahn Subs, 1000w peak 800w rms
Soundstorm 1000w Amp

Heres my story.. My friend helped me do the installation of this
system. I drive a 99 Saturn SC2. We wired everything up correctly the
first time, or so we thought.

The Amp would turn off after 1-5 minutes
of use, then randomly turn back on. So I looked at his install job and
saw he wired the amp to the fusebox, instead of straight to the
battery. Fixed that.

Thought I was home free, until a hour later. The
amp shut off again, and it would come back randomly a few minutes
later. So I figured it was a grounding problem, as it wasn't that
great.

I was using a 1.5 ft 4 gauge wire, that was fastened around a
little cutout in the trunk frame, as my amp is screwed into the back of
the fold down seats.

So I ditched that, went to home depot, and the guy
recomended 8 gauge wire, so I got 6 ft of 8 gauge grouding wire. With
this extra slack i was able to reach to a nice nut in front of the
trunk, and bolted it on the right way.

I thought for sure this would
fix the problem but no dice. Now this leads me to think:

1. Bad amp? It does have a built in fan.
2. Need 4 gauge ground wire?
3. Maybe the fuse gets too hot and separates, then when it cools it
resets itself.

But in my defense, the subs were never played to "ear splitting" level.
So why it does this is beyond me. The ground/positive wires were never
warm when the amp cuts off.

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Mike
 
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Forgot to add, the Bandpass box has a blue neon, it has a wire into the
grounding on the amp. Maybe the Neon is causing it to go out? Who knows.

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MOSFET
 
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wrote in message
ups.com...
Hey, I'm having a rather strange issue, and it's starting to give me a
headache. Ok, some background information.

Audiobahn Bandpass Box
2x 12" Audiobahn Subs, 1000w peak 800w rms
Soundstorm 1000w Amp

Heres my story.. My friend helped me do the installation of this
system. I drive a 99 Saturn SC2. We wired everything up correctly the
first time, or so we thought.

The Amp would turn off after 1-5 minutes
of use, then randomly turn back on.


You're problem could be any number of things, including a defective/damaged
amplifier.

But generally when an amp turns itself off after a certain period of time
and then turns back on, this usually means the amp is employing some type of
protection circuit, usually thermal protection. If you had a bad ground,
the amp wouldn't turn on at all, so I doubt your problem has to do with
grounding.

I would start by checking the input voltage at the amp (using a multimeter).
If the voltage ever drops below 10 volts, this would cause the amp to shut
down. If the amp is only receiving 11 volts or so, this means it would have
to draw lots and lots of current to produce the desired watts (Ohm's law).
This would cause the amp to get way hotter than it should and could be a
possible source of the problem. This would be a good place to start.

MOSFET




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Today amp has some kind of protecting against temp which design to turn
off automatically.
My amp manual said the amp shout down when the heatsink temp reaches
176F and turn back
on once the unit has cooled down below that point.

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Buckshot
 
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"MOSFET" wrote in message
...

wrote in message
ups.com...
Hey, I'm having a rather strange issue, and it's starting to give me a
headache. Ok, some background information.

Audiobahn Bandpass Box
2x 12" Audiobahn Subs, 1000w peak 800w rms
Soundstorm 1000w Amp

Heres my story.. My friend helped me do the installation of this
system. I drive a 99 Saturn SC2. We wired everything up correctly the
first time, or so we thought.

The Amp would turn off after 1-5 minutes
of use, then randomly turn back on.


You're problem could be any number of things, including a
defective/damaged
amplifier.

But generally when an amp turns itself off after a certain period of time
and then turns back on, this usually means the amp is employing some type
of
protection circuit, usually thermal protection. If you had a bad ground,
the amp wouldn't turn on at all, so I doubt your problem has to do with
grounding.


This sir, I beg to differ. My legacy amp (I know woot woot!) turned on, the
light on the diamond lit up, and all was good, but I got no sound, none at
all. Then I realized the ground was real warm, switched it, played it,
bumped till my heart was content, and took my lesson, and learned from it.



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MOSFET
 
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This sir, I beg to differ. My legacy amp (I know woot woot!) turned on,
the
light on the diamond lit up, and all was good, but I got no sound, none at
all. Then I realized the ground was real warm, switched it, played it,
bumped till my heart was content, and took my lesson, and learned from it.

Well, OK, fair enough. I never said I knew everything. In fact the funny
thing is that the older I get, the more I realize how much I don't know.

MOSFET


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