Using rear speaker output to two sources?

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=9523
Printed Date: July 26, 2025 at 2:49 AM

Topic: Using rear speaker output to two sources?

Posted By: jafo
Subject: Using rear speaker output to two sources?
Date Posted: February 14, 2003 at 6:30 PM

I'm trying to find out if my JL 300/2 amp draws power from the head unit when using speaker level input?

My proplem is my head unit only has front and rear speaker level outputs and I want to add a sub.

If I connect my rear output to my rear speakers and to my amp for the sub will the resistance change?

If it does will a crossover solve this change in resistance?

I don't want to draw more than 4 ohms from the rear output on the head unit.

Thanks,

Replies:

Posted By: haemphyst
Date Posted: February 14, 2003 at 8:32 PM

No, that is perfectly acceptable to do, as the input impedance of your amp will be quite high, perhaps on the order of a few kilo-ohms. The crossover is not necessary, and would not work anyhow.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

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