speaker level to rca diy
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=111016
Printed Date: July 13, 2025 at 11:17 PM
Topic: speaker level to rca diy
Posted By: wonhunglo
Subject: speaker level to rca diy
Date Posted: January 26, 2009 at 2:38 PM
has anyone ever made a high to low level impedance adapter?
it could not be much involved. maybe just a couple of resistors. if anyone has any information on this it would be great.
Replies:
Posted By: haemphyst
Date Posted: January 26, 2009 at 5:09 PM
Active or passive? Active is NOT easy, passive is only slightly easier. What dB reduction do you desire? Fixed or adjustable? EQ compensated or not? Do you want ground-loop prevention or no?
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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."
Posted By: i am an idiot
Date Posted: January 26, 2009 at 6:52 PM
Positive speaker wire to a 10 Mic Non-Polarized capacitor, available at Radio Shack. Other leg of the capacitor to a 10K resistor, the other end of that resistor connects to the center conductor of the RCA cable and to a 2K resistor. The other leg of that resistor connects to ground. Do not connect the negative speaker wire to anything. Ground the shield of the RCA jack and you are done. Duplicate for the other channel. Remember do not connect the negative speaker wire to anything.
Posted By: i am an idiot
Date Posted: January 26, 2009 at 7:02 PM
haemphyst wrote:
Active or passive? Active is NOT easy, passive is only slightly easier. What dB reduction do you desire? Fixed or adjustable? EQ compensated or not? Do you want ground-loop prevention or no?
Somebody is thinking WAY too hard.
Posted By: haemphyst
Date Posted: January 26, 2009 at 8:05 PM
i am an idiot wrote:
haemphyst wrote:
Active or passive? Active is NOT easy, passive is only slightly easier. What dB reduction do you desire? Fixed or adjustable? EQ compensated or not? Do you want ground-loop prevention or no?
Somebody is thinking WAY too hard.
Why... Whatever do you mean?  ------------- 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."
Posted By: i am an idiot
Date Posted: January 26, 2009 at 9:50 PM
From the subject, I am betting he was asking how to build an SNI-15, you were going to try and help him build a JL Cleansweep.
Posted By: wonhunglo
Date Posted: January 27, 2009 at 9:23 AM
the response about the two resistor values is the one i was looking for. it is just for a little side project that i am working on and need RCA outputs. i just use a 10K 1/4W and a 1k potentiometer to find the right values. those resistors should be good for up to 50W or so i think. trial and error. thanks everyone
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