Sub wiring

[NAVY IC]

Originally Posted by chrstph

my amp does come on but only when i play the radio. when i push the source button to cd the amp turns off

Sounds like you connected the power antennae lead from your hu to the remote lead on your amp.....

[pimprolla112]

Power antenna is on as long as the hu is on. I always use the power antenna for a remote wire when i use more than 2 amps. But on some HU its a possibility.

[chrstph]

i ran a wire from the hu to the remote on my amp the wire in the back of my hu has a fuse is that the remote wire or the power atenna? i am realy thankful for the help.

[NAVY IC]

Originally Posted by chrstph

i ran a wire from the hu to the remote on my amp the wire in the back of my hu has a fuse is that the remote wire or the power atenna? i am realy thankful for the help.

negative...that's your steady hot...

[chrstph]

i think i need to get car sterios for dummies lol what do you mean by steady hot

[NAVY IC]

This particular wire lead, with the inline fuse, should be connected to a 12vdc pwr source that will not de-energize when the car is turned off.
The term steady hot refers to the fact that it is always energized, It is used to power your clock, keep system memory, etc when the car is off.

[chrstph]

Navy thanks for the info i just have to see which wire is the remote i know thats its the blue one

[PaulD]

in car stereo lingo ... it is usually referred to as "constant 12V"

[JunkTitleGolf]

I've heard it that way and hot wire but never steady hot.

[chrstph]

i have a sony hu with a amp in it 52x4 and a 300 watt in the back is a 10g wire kit good enough

[NAVY IC]

I wouldn't go smaller than 4ga.

[dave92cherokee]

With a 300 watt amp the smallest that you could go would be 8 gauge wire for power and ground. It would work with 10 gauge but if it ever shorts out somehow then you're looking at the insulation on the wire melting off and possibly causing a fire.

[kram5527]

Originally Posted by JunkTitleGolf

Ok I have a Pioneer 520T amp. (Best thing from local walmart). And a Dub Audio 200 sub. (The only thing offered at our walmart that won't blow...tried the Pionner sub but the RMS was to low and I blew it.) Anyways, when wiring it...I want to get the most power out of it with some nice bass. Should I keep it bridged and how should I run the wires to the sub. Since it has dual voice coils (4 ohms each) and all? Run neg on 1 side to pos on other and use the open pos and neg to the amp or what? I was also wondering if I should run the amp in 2 channel mode. Like the left channel for one coil and the right for other. Or would that work?

You should run the amp bridged into the sub but wire the sub’s voice coils in series. You will get the same power as running the sub in 2-channel mode but will have the advantage of mono operation. Mono operation is good for a dual voice coil design since stereo operation permits the voice coils to fight each other to move the cone if the signal is of differential nature.

A 2 ohm stable 2 channel amp is 4 ohm stable bridged and a 4 ohm 2 channel stable amp is 8 ohm stable bridged.