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post #12 of (permalink) Old 01-03-2012
GoT midlife CS
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Originally Posted by Bama5.0 View Post
I'm just starting to upgrade my '11 GTs sound system, and I'm wondering about this. I do NOT want to ditch the factory SYNC nav system (and like you, I know the problem is NOT the head unit, but the line conversion), but I want to incrementally upgrade to all aftermarket speakers and amps. Do you have suggestions on aftermarket converters that will give me a GOOD preamp signal? I don't care about spending some money to make it sound good. After all, every speaker/amp will be high-end, and I'll be going for a SQ setup.

I remember reading about a product that JL Audio makes that is supposed to flatten out all the built-in factory bias, and provide a clean preamp signal. Just looked it up, it's called the CleanSweep.

CL441dsp - Car Audio - OEM Interface - OEM Integration - JL Audio

Ever heard of it? I'm pretty sure that would give me a good starting point for a clean, adjustable output signal. I know JL's stuff is always top-notch, and the features sound impressive. What do you like? I'm stuck on JL for speakers and amps, but I would stray for something like this if it offers better performance.
I originally built my system using the CL-SSi interface, which sounded awesome, but after a month or so, it started having problems, certain chanels wouldn't turn on, and the bass signal would go through the roof. Don't know if it was just a bad unit or if it didn't like the way i had it wired ....... I ended up replacing it with a pair of AudioControl LC2i locs. One taps the sub signal from the amp in the drivers front kick panel, and the other taps the front channel speaker outputs from the amp in the trunk (this one is needed to maintain navi voice and phone. I run the rears off factory power so i didn't need to tap them, although i did with the CL-SSi. The AudioControl LC2i's work great, not quite as clean and pure as the CL-SSi, but still very high quality. This approach will work great for you to start by just adding the subwoofer and amp first, and then doing the rest down the road.

Good Luck. Oh, and i have all the wire colors somewhere if you need that for tapping the factory amps.

2012 GT CS Ingot Silver Vert, Edelbrock E-force supercharger with CAI and 3.5 Pulley, Tremec T-56 Mag, Accufab 84.5, Centerforce DF, Billet Yoke aluminum driveshaft, FRPP 3.73 Rear, MRT Performance H-pipe, Bassani axle backs, JL Audio sound, Edelbrock strut tower brace, JPC adjustable UCA, UMI adjustable panhard bar, KW V3 coilovers, Steeda heavy duty front mounts, Steeda rear LCA's, 20" Steeda Spyders with Michelin Pilot Super Sports, Steeda Big Brake Kit ....... it just keeps going.
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