Hi all

 

Need help urgent

 

so long story short i installed an amp with a small sub in the boot. I ran 2 pair of speaker wires connected to the back of the head unit which is a columbus. No sound system and checked in vcds speaker monitoring is switched off and and equalizer is linear. If i select my car for equalizer then it clips at just over 50%

while playing about in the boot connecting the wires to a cheapo passive line output converter i noticed i was getting sound out from the sub by just connecting the 1st wire which i cant remember was positive or negative and it was loud, when i connected the other wire the negative sound level came down to normal. So i feel the sub isnt phasing right, its just not hitting the low notes quite right, much more of a mid bass sound.

So my question is for any sound enthusiaists, does this sound like a short in the speaker supply wiring, that i managed to make subwoofer play on 1 single strand of wire?

 

2nd does anyone have the exact colours of the front speaker wires at the back of the head unit as someone suggested there maybe a bass limiter on the rear outputs, so may as well try a new pair of speaker wires and connect to fronts

Does the additional amp, which you added, have its own power source direct from the battery, or have you tapped into an existing power supply?

Hi

Traditional setup, seperate amp, wired up to the battery. 

 

2 pairs of speaker cable tapped into rear outputs on back of head unit, running to the boot into a 2 channel line output converter. Both phonos into a mono sub amp driving a small 10 inch sub

It does sound like a wiring issue or possibly a fault with the line out convertor.

 

I suspect you have already checked all of the connections?

 

You said the line out convertor was a 'cheapo', so maybe worth trying a better quality one if you cannot test it, or the wiring with a multimeter.