Lexus Subwoofer Amp is Playing Dead
Printed From: the12volt.comForum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=75914
Printed Date: May 05, 2024 at 4:41 PM
Topic: Lexus Subwoofer Amp is Playing Dead
Posted By: lexelite
Subject: Lexus Subwoofer Amp is Playing Dead
Date Posted: April 08, 2006 at 9:27 PM
Car: 99 Lexus SC400
Audio: Stock Nakamichi Premium
Installing an IPOD between the headunit and the factory amps. The system is balanced, so their is 1 signal ground and 4 positive leads on the Nakamichi.
Tied HU signal ground to iPOD negative leads and was able to hear sound through all four speakers (Front- Left/Right, Rear- Left/Right). Same signal for front and rear.
The only problem right now was that (A) Stock Volume control isn't working as it would in a balanced SC430 Mark Levinson system and (B) Most importantly, the subwoofer amp is completely silent (playing dead).
Obviously (B), jeopardizes the complete setup in the absence of bass.
Admitedly, my Soundgate AVM2 Level Matching device hasn't arrived, so the gain is low due to the low voltage of an iPOD.
Would the AVM2 solve my issues? Why is the subwoofer amp quiet?
Attached are the diagrams for the NAK unit.
Any help is greatly appreciated.
Audio: Stock Nakamichi Premium
Installing an IPOD between the headunit and the factory amps. The system is balanced, so their is 1 signal ground and 4 positive leads on the Nakamichi.
Tied HU signal ground to iPOD negative leads and was able to hear sound through all four speakers (Front- Left/Right, Rear- Left/Right). Same signal for front and rear.
The only problem right now was that (A) Stock Volume control isn't working as it would in a balanced SC430 Mark Levinson system and (B) Most importantly, the subwoofer amp is completely silent (playing dead).
Obviously (B), jeopardizes the complete setup in the absence of bass.
Admitedly, my Soundgate AVM2 Level Matching device hasn't arrived, so the gain is low due to the low voltage of an iPOD.
Would the AVM2 solve my issues? Why is the subwoofer amp quiet?
Attached are the diagrams for the NAK unit.
Any help is greatly appreciated.
Replies:
Posted By: lexelite
Date Posted: April 08, 2006 at 9:31 PM
Posted By: lexelite
Date Posted: April 08, 2006 at 9:54 PM