Updating fuse and gauge?

[OllieVigar]

Ok so I've been upgrading my sound system over the years when I first got my sub. I was running a 12" active sub which I then amped to a fli 900s full loaded 4 channel amp as well as vibe slick 5 and 6x9. I was running this on the standard wiring kit that came with the active sub when I first bought it.

So after a year I blew my sub, I've now got a new 1000 watt sub, all tuned and sounds nice when I turn it up. If I have it loude then the fuse in the power cable battery side blows. That is a 20 amp fuse.

On the amplifier it has a single 40 amp fuse.

Do I just wack a 40 amp fuse in the power cable or do I upgrade my gauge and fuse?

I'm pretty sure it's an 8 gauge cable as its quite thin and it was the original wiring.

[MJ05LLY]

Number one, your sub will not be 1000w and if it really was you would not run it off 8 gauge wire.

You never just 'wack' a fuse in. The inline fuse at the battery end is to protect your power cable not amp as such.
In answer to your question 50A will be ok for 8 gauge cable.

[OllieVigar]

I didn't want to out a bigger fuse in the inline fuse I case I melted the cable, so should I not put a 40amp fuse init to match the amp? And yes I know it's not gonna be 1000watts I'm just telling you my setup.

[wadoryu]

If you blew it, it's shorting somewhere.

[MJ05LLY]

I didn't want to out a bigger fuse in the inline fuse I case I melted the cable, so should I not put a 40amp fuse init to match the amp? And yes I know it's not gonna be 1000watts I'm just telling you my setup.

That fuse that is blowing is protecting your cable, the fuses in the amp protect the amp. 50A will be ok

If you blew it, it's shorting somewhere.

Not always. Could just be pure current draw as it only happens when he turns it up.
If something shorted then the amp would be the likely item to blow at either low or high volumes.

Amps ain't massively efficient, so it's highly possible it could just be current draw

[Nick_Bush]

I would change the power cable mate, the wiring kit that comes with the Vibe, Fli or Edge subs are piss thin, and no good if you are running another amp from it as well as the active sub you have.

A proper 4 gauge wiring kit has normally a 60A fuse and will be far better.

If you just add a bigger fuse to the wiring you have, you will allow more current through but will heat up the power cable to the point it could melt.