Bought my first alpine hu. Quick question

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=52258
Printed Date: May 02, 2024 at 7:34 PM

Topic: Bought my first alpine hu. Quick question

Posted By: kingpin111
Subject: Bought my first alpine hu. Quick question
Date Posted: March 20, 2005 at 10:45 PM

I just bought this hu.

CDA-9851 new for 2005

i know its not tthe highest quality from alpine's line but considering i have seen it for $270 american, i couldn't resist paying only $280 canadian for it. i consider it a pretty good score.

But here is the question.

is it better to set the crossover for my subs on the amp, or should i set it from the hu. will it make any difference which way i go.

i was thinking of just turning the crossover on the amp all the way up, and just setting it between 80 - 100hz on the hu.

thanks

kingpin

Replies:

Posted By: kingpin111
Date Posted: March 20, 2005 at 10:52 PM

oh, and here is the one i bought.

https://www.crutchfield.com/S-5IwnqHNYUrO/cgi-bin/ProdView.asp?i=500CDA9851&search=ALPINE+CDA9851

Posted By: ss-installer
Date Posted: March 20, 2005 at 10:56 PM

set the low pass frequency on amp the same as low pass frequency (sub-out) on HU.

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Posted By: tcss
Date Posted: March 21, 2005 at 7:39 PM

I've found that the X-overs on the Alpine decks aren't quite as good as the ones on a high quality amp. What kind of amp do you have?

Posted By: deocder
Date Posted: March 22, 2005 at 3:47 PM

I have read somewhere on this site to not stack crossovers. I'm not sure why though.

Also, tcss, what makes an active crossover good or bad?

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WTB: Black Leather Acura GSR seats

Posted By: mrmsudawgs
Date Posted: March 22, 2005 at 4:40 PM

I have an Alpine CDA-9831. I set the cross-overs on the HU to zero and used the amp's (Polk Carbon C400.4) because it had a variable cross-over. The HU had a selectable cross-over (two or three points you can select). I felt the amp's cross-over gave me more and finer tuning options.

Mike