# Thread: amp keeps on blowing fuses

1. Yes i see exactly what you are saying
(hence why my brain hurt from the math...)

The amp works slightly differently with its amperage ..etc

I dont rember exactly now...but if i can find the book i was reading about it ill post further.

Its becasue of this that normal headunits cannot usualy produce over 20 watts RMS...something with the pull and ground....

Damn it i need to find that book now...

2. Originally Posted by Will Albers
Hmmm, i dont think i have ever ran into this problem, i.e. gains causing a fuse to pop. I still think something is up.
Well... yeh. I think the amp was also way too hot when I had the gain up.

3. Originally Posted by Sidewalksalvage
Isnt the sub a pioneer. I dont think they would make something that didnt work all that well....and i have never heard of a 3 ohm sub.... but hey you never know..

But thats true if the sub over works i guess it could pop the fuse...
Yeh... the sub is a pioneer. Paper cone IIRC. Its old... stock from my car which came with the lexus "premium" sound system (8" sub, and 4 4" speakers).

4. ## It's the way you connect the sub............

In this way it's 4 Ohm

In this way it's 1 Ohm

In this way it's 2 Ohm

It really makes a difference
......The sub used was 4 Ohm ofcourse.......

5. Note above he is useing 2 ohm subs.

With 4 ohm subs it would be 8, 4, and 4.

EDIT: It shoudl be 8ohms in series (first pic) 2 ohms (not 4 like i accidentally posted) in parallel and 4 with one sub straight up.

also note it works the same way when wiring dual voice coils on a single sub.

6. Originally Posted by Sidewalksalvage
Note above he is useing 2 ohm subs.

With 4 ohm subs it would be 8, 4, and 4.
I mean the seperate channels are charged for it(don't know how to say it in English)
4 Ohm + 4 Ohm paralel = 2 Ohm that makes 1 Ohm for each channel

7. Acually, these subs are 4ohm, they are just bridged on the amp, making a single 4ohm sub a resistance of 2ohms.

8. i have a similar problem my amp fuses keep blowing but only when i attach my sub. if i leave the sub unhooked the amp functions. i have now blown 7 fuses trying different things to isolate the problem. PLEASE HELP! im at the point where im just about to pull out all my wires and start new.

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