Bridging Amp

[Bryan Jackson]

I have 2 Alpine Type R 10" (4 ohm SVC). I run them off my amp which
is two channel, and run them off seperate channels. I decided to try
bridging them down to 2 ohms, even though my amp is not rated for it.
It worked fine except that it continuuously blew my 80 amp circuit
breaker. I decided to put a 200 amp circuit breaker made by fusion in
that I bought at Radio Shack (It's the only place I can get Car audio
in this town). Now, it blows too but not as often. My subs arn't
that much louder, they are mostly clearer, and maybe 5 db louder. Why
do I keep blowing the circuit breaker. The fuses on the amp are 2 x
30 amp so, I don't see how it could be drawing 200.. I went on and
wired them back to the way they were before, but I was just wondering
what was going on, and if I bought a monoblock that was stable to 2
ohms bridged if it would do the same thing.

[Peter Klein]

How many watts per channel is your amplifier? Obviously it's not enough! Are
your two 10" subs in a sealed box? Are they wired in series or parallel?
What impedance does the amp see, 4 ohms? Your amp may not be stable at two
ohms. P.


"Bryan Jackson" > wrote in message
om...
> I have 2 Alpine Type R 10" (4 ohm SVC). I run them off my amp which
> is two channel, and run them off seperate channels. I decided to try
> bridging them down to 2 ohms, even though my amp is not rated for it.
> It worked fine except that it continuuously blew my 80 amp circuit
> breaker. I decided to put a 200 amp circuit breaker made by fusion in
> that I bought at Radio Shack (It's the only place I can get Car audio
> in this town). Now, it blows too but not as often. My subs arn't
> that much louder, they are mostly clearer, and maybe 5 db louder. Why
> do I keep blowing the circuit breaker. The fuses on the amp are 2 x
> 30 amp so, I don't see how it could be drawing 200.. I went on and
> wired them back to the way they were before, but I was just wondering
> what was going on, and if I bought a monoblock that was stable to 2
> ohms bridged if it would do the same thing.

[Les]

"Bryan Jackson" > wrote in message
om...
> I have 2 Alpine Type R 10" (4 ohm SVC). I run them off my amp which
> is two channel, and run them off seperate channels. I decided to try
> bridging them down to 2 ohms, even though my amp is not rated for it.
> It worked fine except that it continuuously blew my 80 amp circuit
> breaker. I decided to put a 200 amp circuit breaker made by fusion in
> that I bought at Radio Shack (It's the only place I can get Car audio
> in this town).

You better have some seriously large power wire running.


Now, it blows too but not as often.

You're lucky it blew, car fires are not easy to put out before the car is
destroyed.

My subs arn't
> that much louder, they are mostly clearer, and maybe 5 db louder. Why
> do I keep blowing the circuit breaker. The fuses on the amp are 2 x
> 30 amp so, I don't see how it could be drawing 200.. I went on and
> wired them back to the way they were before, but I was just wondering
> what was going on, and if I bought a monoblock that was stable to 2
> ohms bridged if it would do the same thing.


You could have a fautly amp, or with the way you've wired it and your
propensity for constantly trying to hit harder you are likely clipping the
hell out of it and drawing more current than you think.
Or, and in my opinion more rare, is a small nick in the cable and when you
start drawing more current it could be arcing and grounding out.

Les