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2011 ISF Amp Wiring Guide for Mark Levinson Amp

Old 11-17-18, 08:14 AM
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Question 2011 ISF Amp Wiring Guide for Mark Levinson Amp

Greetings everyone. I'm trying to find the BEST connections into the factory ML amp that will give me the correct signal for my aftermarket amplifier and speakers. The install shop that designed the system never did make the correct speaker line connections and I'm losing bass in the components. I'm planning on undoing their work to get it sounding better. A few notes: The only factory speaker that remains is the center channel. The door speakers, both front and rear, have been replaced with aftermarket components. The subwoofer is a JL Audio H.O. Wedge in a ported box in the trunk. I have a AudioControl line output converter (LC8i) that can input speaker-level leads from the factory amp, sum select signals, and output to a single pair of RCAs. The aftermarket amp is a JL Audio HD900/5, 5 channel amplifier.

My goal is to get a full range signal to the door speakers and low frequency to the sub. I tried to summarize how I THINK the system connections should look on the below image. I'm just not sure this is correct, not only from the factory amp connections, but also for the LOC summing and output.

Considering putting in a RCA Y adapter at the LOC so I can feed a summed signal to the JL amp on the front and rear channel, then have the sub fed by the dedicated sub RCA. This option kills the fader controls at the factory head unit. But, it will allow me to adjust the front and rear at the JL amp. I'm not just finding any other way to get a full signal to the components without adding another LOC.

Looking for guidance or experienced installers that might suggest the best, or even the correct way to got this setup.

Thanks in advance.
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