alpine 9887 turning off internal amp and sub control?

[specie 10+ year member]

I was looking at the manual but I didn't see the instructions for turning off the Internal amp.

Also, I'm running a jl sub with an older ppi a600 amp (no eq), there is some vocal coming from the sub. Is it possible to setup the Alpine eq to keep the sub from producing that freq? I only had a few minutes to mess with the hu, but couldn't get it the way I want it. Any tips on tuning with this hu?

Thanks.

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[jacka 10+ year member]

to turn off the amp you gotta hold down the func./setup button and go to general and to Power IC. turn that off you will turn the internal amplifier off.

 

[BEAVER.989 10+ year member]

x2 on power ic. As for the vocals in the sub... Set the x-over lower.