P880 Crossover/Settings

[REDLINEZ33 10+ year member]

I just got a P880 (so far i love it) but had a question about the crossover and other settings.............

First: should I use the crossover on my AMP (alpine MRV-F450) or my HU......

Second: if I do use my HU, whats should I set my slope to (never had to mess with slope before, subwoofer is set to 18db from the factory and speakers are turned to 0.)

Third: Any other settings that I should know to change?

THANKS! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

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[Colin+M 10+ year member]

use your headunit's crossovers

As far as slope, use what your ears like....18 is a good place to start.

 

[adam71 5,000+ posts]

Are you running in STD mode or NW mode??

 

[REDLINEZ33 10+ year member]

i didnt change the switch on the back, so i believe that makes it STD mode...

 

[REDLINEZ33 10+ year member]

I have another NOOB question... With my old JVC (4 volt RCA preout) I had to set my gains about half way, with this new PIONEER (5 volt RCA preout) i have to set my gains about 3/4 way............................... Curious, why would I have to increase my gains when the HU has a higher voltage preout?

 

[Colin+M 10+ year member]

what are you using to set the gains? 3/4 volume on one headunit isn't the same as another.

Set it with a DMM and you should be fine.

 

[REDLINEZ33 10+ year member]

Thats how i set it. I used set the volume on my HU to around 40, and it took 3/4 of my max setting for gains on my amp.

 

[REDLINEZ33 10+ year member]

so anyone have any idea what is making me have to set my gains higher with my new HU vs my OLD JVC? What could cause that? or is the PREOUT on the 880 over rated?

thanks

 

[iceteebone 5,000+ posts]

good chance it's overrated, different brands have different volume settings on where it produces its voltage. just use a dmm to set them. also playing music the amp will never see a 5 volt input. as for xover slopes its all up to you. i personally use a 12 db slope on my subs and a steeper 24 db slope on my highs and usually 18-24 db on the mids, but that is just general and you'll have to play with it. what slopes does that deck have?