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wiring headunit sub out to stereo amp.

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=111398
Printed Date: July 20, 2025 at 8:56 PM


Topic: wiring headunit sub out to stereo amp.

Posted By: jitru28
Subject: wiring headunit sub out to stereo amp.
Date Posted: February 08, 2009 at 6:18 AM

Hy.I have a stereo amplifier wich is conected to a subwoofer in bridge mode.I recently got a head unit Blaupunkt Mp56 wich has 2pairs of preout for amplifier,and an 1rca preout for subwoofer.How can i wire that 1rca to amplifier's 2 inputs(L+R)-i want to use it for access the subwoofer gain control in headunit.If i wire the sub-out preout only to one amplifier input (L or R)the power will be half?Or if i use a RCAsplitter to make that one sub-out divide in 2  to connect to L and R inputs on amplifier the sound could sound weird because the same mono signal would enter in Left input and same in Right input of amplifier?Or should i just use the 2pairs of preout,wich head unit also has for powering rearspeaker amp.,but i would not be able to set levels for subwoofer from headunit menu.How should i do?



Replies:

Posted By: boogeyman
Date Posted: February 08, 2009 at 7:59 AM
 Use y-adaptor it will be fine





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