hey all,
just put a pair of 6 inch splits and a pair of 12 inch subs into my housemates car.
splits are powered by a pissy little amp that came with them (250 watts pmp) and the subs are powered by a 2 channel 400W amp (RMS) putting putting out 4ohms. the subs are dual voice coil, also 4ohms.
ive hooked them up to one channel of the amp using the following diagram.
the problem is they will cut in and out, basically being very temperamental. any hints on what i should do? oh the amp is bridgeable.
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Car audio problem
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Car audio problem
by diesel » Wed May 10, 2006 3:10 pm
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by Smitty » Wed May 10, 2006 3:15 pm
Vin
hows the earth on the amps???
also
how big (size) is the power supply cable to the big amp?
symptoms sound like amp clipping
and thats caused by bad earths and maybe insufficent juice
hth
hows the earth on the amps???
also
how big (size) is the power supply cable to the big amp?
symptoms sound like amp clipping
and thats caused by bad earths and maybe insufficent juice
hth
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by diesel » Wed May 10, 2006 3:19 pm
i'm using a 4 gauge pwer lead.
the earth appears to be OK cos the splits are working no probs, but i might just find another spot for that.
can you explain clippings for me?
the earth appears to be OK cos the splits are working no probs, but i might just find another spot for that.
can you explain clippings for me?
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by diesel » Wed May 10, 2006 4:56 pm
ok so why does it say 4ohm?
would this be better? cos it says 1 ohm
would this be better? cos it says 1 ohm
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by BladeBoy » Wed May 10, 2006 5:15 pm
Vince,
4 ohms divided X 2 voice coils is 2 ohms AC resistance not DC resistance you are reading off a multimeter, the reason the amp is cutting out is caused by the protection circuit, because the impedence is too low, hook them up in series, I.E + to (-)
4 ohms divided X 2 voice coils is 2 ohms AC resistance not DC resistance you are reading off a multimeter, the reason the amp is cutting out is caused by the protection circuit, because the impedence is too low, hook them up in series, I.E + to (-)
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by diesel » Wed May 10, 2006 5:56 pm
ok so i wired it according to the second diagram, i get constant noise but at a tiny volume. i can just feel the vibration of the subs.
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by diesel » Wed May 10, 2006 6:02 pm
mark, is the second diagram in correct?
or should it be like this?
or should it be like this?
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by icebreaker » Wed May 10, 2006 10:43 pm
Mate, feel free to bring it around and I'll take a look.
I used to compete in SPL it's been a while but I'm more than happy to take a look.
Chances are your over driving the amp or something silly. but best to check it out and see what it's doing online diagnosis is jsut a waste of time, esp when your so close by...
I used to compete in SPL it's been a while but I'm more than happy to take a look.
Chances are your over driving the amp or something silly. but best to check it out and see what it's doing online diagnosis is jsut a waste of time, esp when your so close by...
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