can't adjust sub level

ok so installed my sub and now the only way i can adjust the power is by turning up or down the bass level. the sub setting on my deck is on and it still does nothing at all.
i dont know what to do but heres a pick of the amp settings. so maybe i set it wrong. also it is a two channel amp bridged to my sub



please help if you can.

thanks

 

I am guessing that amp is getting its input by speaker level jacks off of your head unit? I am guessing this because Line Input RCA look blocked off.

If my guess is right, the sub setting on your Head Unit is not going to work.

Normally you hook the amp up with RCA cables from the Sub Out on your Head Unit to the Line Input. Then for a starting spot turn your LPF to about 80 hz. Then adjust the sub level until it blends in with your other speakers by using the level knob.

I also recommend turning the Bass EQ to zero db.

If you need anymore help, please tell us more about how your stereo is hook up. Ohm level of the sub, does the sub have one voice coil or two voice coils and a picture of the what wires out of the amp you are using to bridge it (since the Mode Switch is in stereo)

 

First off - Is your switch set to LPF or HPF? I can't tell by the pic. Either way it will have to be set to LPF unless you have a crossover and are connecting it to your mids and highs

2nd - Change your Bass EQ to middle, Next set your LPF (this is what gives you bass) HPF sets your voice and mids sound. Turn your level down to about 1/4 until you have the previous 2 set then you can up the level which will raise the entire sound quality.

3rd - The bridge connection i'm guessing is speaker wire from (+) channel 1 and (-) channel 2 leading to your (+) and (-) of your subwoofer correct?

 

so if i plug the rca cables into the other ports it should work?

it was on hpf so ill change that

and yes ill make the other ajustments suggested.

its only an 8" with a jenson 400 amp.

 

are you getting sound? I'm guessing you are not.... Line in is where those RCA cables should go if they are coming from your deck....

 

i am getting sound just not alot. so i figured something was wrong. ill go try this right away

thanks!!!

 

1) As others have said, put the RCA's where it says "in"
2) Set the crossover switch to LPF
3) Set the dial on the LPF to the 9 o'clock position
4) Turn that bass EQ dial all the way down.
5) Set the Level to the point where it blends well with the system.

 

+1

 

did all this just now with no change.
it seems to only adjust with the bass with the speakers

 

got no idea what it is now. any suggestions.

 

we need to see the other connections... is the sub or amp even turning on?

 

ya the fuse is lit up so there is power going there

 

is your sub working?

 

yes you can definetly hear it

 

Touch the cone and confirm you can feel it moving.

 

ya definently on but not that loud

 

On the stereo, are the rca's hooked up to the sub out

 

WE NEED MORE PICS!!.... pics of the amp connections preferably

 

I would also switch it from stereo to mono in you are only running one sub off it.

 

Something is fishy...

You were getting sound from the subwoofer when the RCA's were plugged into the OUT section? That just doesn't make sense.