alpine HU Eq help

[mr sheep]

all i have in the system is JBL components up front and 13cm speakers in door with 12" JL sub.

the rcas are on the subwoofer pre amp connection so i can turn it up down the back roads but down in residential areas.

was playing with the EQ on the HU last nigh and when i put the LPF on the speakers it also cuts some of the frequency to the sub.

why is this, surely the filter should only affect the speakers not the output to the amp?

 

[Dink]

the lpf would be for the sub.

you need a hpf on the components.

also what h/u is it? because on mine i think i can attenuate the filters as well

 

[mr sheep]

Sorry yes it only gives one option wnen the sub output is active thats HPF

but it doesnt give an option for speakers or output

also whats subwoofer reverse?

its a 9831r btw

 

[Dink]

the hpf shouldnt affect the the sub out rcas but it will the front and rear rcas aswell as the speaker outputs from the hu.

sun reverse just inverts the phase on the sub output.

 

[mr sheep]

thats what i thought, are my ears playing tricks on me.

you say the sub reverse just inverts the phase on the sub output but what does that mean?

 

[Dink]

if you had bass note where the speaker went in then out, with reverse on it would go out then in on the same note

 

[mr sheep]

and whats the point of that function?

 

[Dink]

a pure guess

would be that it would be for intergating with the comps better at the x-over points.

so the sub and comps would be working togeter (in-phase)