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did they give you a reason why not to disconnect the mic wires? i did on mine and it works great.

disconnect anc mic wires at amp

the 12.1 radio module is different than all the 8.4

the alpine is a triple 2 ohm voice coil and i believe the hk sub is a single 2 ohm voice coil.

right around 5.75" the inside bottom is routered out about 3/8" for sub motor

oh ya for sure. the only problem is the mounting depth of the sub.

mine is only under the passenger rear seat. i take my dog on trips so i fold up the rear drivers seat. my box is right at 1cft with a 3" aero port tuned to about 31hz. im running a hertz 1000w to the ultimax 10". i ran the power cable for the amp under the truck with the factory wiring. there is...

there is a very large vent behind the rear seats. if you take the rear carpet off you can see it. thats where the noise is coming from.

10" ultimax

ya im sure someone has pics. lets see them.

u need radio module too

in the alpine setup the sub is a triple voice coil. so i used 2 to feed the aftermarket sub amp and left one of the coils hooked up. the stock sub with one coil hooked up actually sounds decent. obviously way less power and output.

the stock amp has anc built in

i like the looks of that box. they did a nice job designing it. how does it sound? does it get low low. that pioneer sub amp is decent if you wire it low enough.

i actually like it. future of trucks IMO

ANC is active noise cancellation. its a system built into amplifier to cut down on road noise.

its the ANC. when the vehical goes into eco mode the anc sends a 38hz sound thru the sub channel out of phase to tone down the drone the exhaust makes. crack you window and the anc will be disabled and it will go away.

gm 5.3 = stuck lifters. huge issue GM ignores.

no there is not. the sub channel is not controlled on its own from the factory radio.

i agree with you. i am a huge audiophile and i agree. i wish we had access to the dsp in the amplifier because obviously with some tweeking the system could sound so much better. if you have programmed the apt-x bluetooth chip it is amazing the difference in sound.