amp going into protect mode

[dodgedurango2000]

2000 dodge durango i got jL500/1 powering a 10 in poineer, and 620/2 power
acoustic powering two polk audio 6 1/2. 8 g. ground wire 4g power wire split
into two 8g running one to each amp when i turn up the volume loud and when
the bass hits hard the p.a. amp will go into proctect mode cause the jl amp
to shut down anyone know why this is.

[MOSFET]

My stock advice when this kind of thing happens: Have you checked the
voltage when this occurs? It is possible that your voltage is dropping too
low (below about 10 volts) causing these amps to shut down. Also, if your
voltage is low (10-11 volts), your amps will draw more current (amperes) to
supply the same wattage (volts X amperage = watts). This may cause your
amps to overheat, blow fuses, or go into protection mode.

MOSFET

"dodgedurango2000" <u20197@uwe> wrote in message news:5de8faceb00c0@uwe...
> 2000 dodge durango i got jL500/1 powering a 10 in poineer, and 620/2 power
> acoustic powering two polk audio 6 1/2. 8 g. ground wire 4g power wire
> split
> into two 8g running one to each amp when i turn up the volume loud and
> when
> the bass hits hard the p.a. amp will go into proctect mode cause the jl
> amp
> to shut down anyone know why this is.

[dodgedurango2000 via CarKB.com]

if the volts were low would a cap hold the extra power that is needed?

MOSFET wrote:
>My stock advice when this kind of thing happens: Have you checked the
>voltage when this occurs? It is possible that your voltage is dropping too
>low (below about 10 volts) causing these amps to shut down. Also, if your
>voltage is low (10-11 volts), your amps will draw more current (amperes) to
>supply the same wattage (volts X amperage = watts). This may cause your
>amps to overheat, blow fuses, or go into protection mode.
>
>MOSFET
>
>> 2000 dodge durango i got jL500/1 powering a 10 in poineer, and 620/2 power
>> acoustic powering two polk audio 6 1/2. 8 g. ground wire 4g power wire
>[quoted text clipped - 4 lines]
>> amp
>> to shut down anyone know why this is.

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/car-audio/200603/1

[mfreak]

Mosfet: I always assumed if your voltage drops, the current doesnt
increase to keep a constant wattage, I thought the wattage just
decreased proportionately.. Am I wrong? My Kicker amp has 2 ratings,
one at 12v and one at 14.4, the 14.4v rating is more/less
proportionally higher.

To the OP: Does your amp shut down immediately, or does it take a
while on the road? If it takes a little while, you might just be
overheating it. This happened to me, so I bought a couple 12v fans and
blew em across my sub amp, been fine ever since. You'll probably need
a relay if you plan on running more than one fan off your remote wire.
2 fans (the ones I got anyway) run around 500 mA total, and you can fry
out a HU drawing this much off the remote.

Caps help keep your voltage contant, most noticably during heavy bass
drum kicks, etc. They help prevent 'disco lights' on your dash lights,
headlights, etc. I doubt the absence of a cap is causing you problems.

[MOSFET]

> Mosfet: I always assumed if your voltage drops, the current doesnt
> increase to keep a constant wattage, I thought the wattage just
> decreased proportionately.. Am I wrong?

No. You are exactly right! But (and here's the BIG but), you will likely
turn the volume up when this happens (to maintain the same volume level).
If you read my post carefully you will see that I said that amperage will go
up to "maintain the same wattage". Basic Ohm's law at work here. But you
are right, this will NOT happen simply automatically.

To the OP: A cap may help. A cap may prevent the voltage from dropping
below a certain point, which might prevent your amp from going into
protection mode (IF this is the problem, but I think it is since BOTH amps
are doing the same thing). But here's the thing, if your voltage is
dropping THIS LOW (and trust me, that's pretty low), ultimately this WILL
happen again even with a cap (a cap will just delay the inevitable). You
see, you are consuming more power than your car is producing and even a cap
cannot make power that was not there in the first place. I would check your
battery and your charging system. It's possible something is not right with
the electrical system of your car.

MOSFET