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using RCA’s and HU Speaker wires

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=17540
Printed Date: July 14, 2025 at 6:52 PM


Topic: using RCA’s and HU Speaker wires

Posted By: Gilateen
Subject: using RCA’s and HU Speaker wires
Date Posted: August 13, 2003 at 11:34 AM

can you connect the  HU's front/rear speaker wires to other speakers (i.e. tweeters) and have the rca's lead to an amp?

also if the tweeters or other speakers are hooked up to the HU wiring, what type of filter would be needed?




Replies:

Posted By: DYohn
Date Posted: August 13, 2003 at 12:56 PM
Yes, you can do this.  Use a passive high-pass crossover on the speaker outputs of the head unit.  Many after-market tweeters  come with a crossover optimized for them.  If you do not have crossovers designed for your tweeters, let me know what type you want to use and I'll make a suggestion for you.



Posted By: Gilateen
Date Posted: August 13, 2003 at 1:24 PM

i wanted to use these tweeters, i dont know if they have the crossover designed in them or anything.

https://cgi.ebay.com/dll?ViewItem&item=3036856928&category=14943&rd=1




Posted By: DYohn
Date Posted: August 13, 2003 at 1:52 PM
I know nothing about those particular tweeters, but if the listed specs are correct, you'll want to cross them over at 5000 Hz (or higher.)  A crossover like this one would do the trick.  There are other options, as well.



Posted By: Gilateen
Date Posted: August 13, 2003 at 2:23 PM
how would you connect that to the speakers? can you please inform me of the other options?



Posted By: DYohn
Date Posted: August 13, 2003 at 2:43 PM

A passive crossover is simply connected in the speaker wires between the amplifier (or the head unit in your case) and the speaker.  Check the link on this site for some crossover basics.  Do a search on the Internet for "passive crossover" and you will find lots more information. 

I suggest for a tweeter you should use a 12 db (second order) crossover or better.  There are many other options on eBay and in any good car stereo shop, on-line or on your block.


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