How to control sub with Alpine HU

[GETSOMZ28]

I have an Alpine CDA-9813 and cannot seem to control the my sub on a seperate amp with it. I have turned the SW on in the setup menu, but I cannot control the sub with the HU. I tried sliding the sub control up and down, but there is no difference in bass. I have the x-over set at 200. I know the sub is hooked up to the sub rca's as I double checked. The bass changes when I change MX settings, and when I play with the EQ, but I want to be able to control the bass with the main knob.

Anyone have any ideas??

Thanks,

[sirhc reuab]

i got the same thing with my new alpine, it controls the sub some, but its not drastic at all

[GETSOMZ28]

Hmmm, maybe the change is so slight it is not too noticeable?!?

[JTom]

triple check to make sure you are in fact plugged into the sub out. Should be very noticable from going 15 (all the way) to 0. Maybe try lowering the "low" crossover freq. I install atleast 2-3 alpines a day. I've plugged into the wrong rca before and swore up and dwon it was right. You should notice something unless the amp isn't turning on. good luck.

[Akuma]

yeah i have a cda 7876 and the sub controls are drastic from 0-15 i would double check the rcas

[GETSOMZ28]

Sure enough, they were plugged into the front RCA's:mad: Thanks for all your help. It sounds much better now!:D :cool: