My 2022 Tahoe Bose Audio Mods

[Jdsmooth]

Well, I got my install done today. This thread really provides everything you need for a really nice, affordable upgrade. I went with the Rockford R2 sub in the Escalade box mentioned early in this thread, the LC2i Pro and an audiocontrol Epicenter “bass restorer”. It got really cold, so I haven’t cleaned up my wiring or tuned the system, but even untuned and right out of the box, the low end is hugely improved.

I’m going to figure out the best settings on the LC2i and Epicenter and clean up my wiring over the next week. I’ll report back with my settings and the final result. Thank again to everyone who contributed to this thread.

 

[iamlegion]

Unfortunately this was while they were installing it and how it looked after they finished. Once they replaced all the interior molding and trims you can't tell anything was done. You can see the JL Audio subwoofer through the factory grill a bit. The bass controller was mounted up front on the center console side cubby pockets. Very discreet! Only evidence of anything done is the sound of bass when playing music. Rumbles through the vehicle! In a nice way!

Stone - I want to do this verbatim. Some box, amp, high level converter. I don’t want to **** around shoving a sub in some other box.

my only problem is nobody on the internet is really clear what system they had and if/how they handled the noise cancellation.

i have the ~14 speaker “Centerpoint” system and from what I keep reading if you just run the stock high level inputs to an aftermarket system the OEM anc will just add noise to the sub. Did you have ANC on your ride before, and what did the installer do about it?

if you happen to know how they ran your power that would be a bonus, if not I’ll figure it out. I assume they ran from battery up front.

 

[iamlegion]

FYI the JL 10TW3-D4 does not fit into the esky stock box unless you are stubborn and used to making bad decisions like I am.

The cutout diameter is 9 1/8" and the maximum size of the bezel is 11". The JL exceeds both of those dimensions but I do own a router and Dremel.

The mounting surface isn't perfectly flat either so it would be best to choose a sub that has even mounting points - unlike the JL which only effectively has four. I supplemented sealing and securing with RTV.


View attachment 396387View attachment 396388View attachment 396389

That's pretty big box, probably larger than the JL calls for but I'm of the opinion that most subs speck smaller volume boxes than ideal for marketing purposes...

Also, my vehicle amplifier was mounted with 3 M10's and one plastic push on clip which created a massive resonate vibration so be sure everything in that area is bolted down and secured properly.

Has anyone thought of fitting the 10TW1-2 in the Escalade box? The dimensions seem to line up better than the TW3.

That combo is about $625 cheaper than the JL stealth box. I bet that with any aftermarket amp is light years better than the ~6.5” Bose and still twice as good as the AKG system in the Escalade.

10TW1-2

TW1 10-inch Subwoofer (300 W, 2 Ω) Built on JL Audio's patented thin-line subwoofer technology, the 10TW1 delivers a powerful combination of shallow mounting depth and excursion capability, while operating in insanely small enclosures (0.35 cu.ft. / 10 liters). This, combined with a special...

www.jlaudio.com

 

[Jdsmooth]

Stone - I want to do this verbatim. Some box, amp, high level converter. I don’t want to **** around shoving a sub in some other box.

my only problem is nobody on the internet is really clear what system they had and if/how they handled the noise cancellation.

i have the ~14 speaker “Centerpoint” system and from what I keep reading if you just run the stock high level inputs to an aftermarket system the OEM anc will just add noise to the sub. Did you have ANC on your ride before, and what did the installer do about it?

if you happen to know how they ran your power that would be a bonus, if not I’ll figure it out. I assume they ran from battery up front.

I did not have ANC, I have the lower level Bose system without the rear sub or the center dash speaker. I’ve heard varying opinions on whether certain year higher end Bose systems still have ANC, but can’t really help you there.

 

[Jdsmooth]

I’ve cleaned up my install, installed the bass knob and took some photos to share with the group. Thanks again to everyone for the help and guidance.

 

[K5-Z71]

Has anyone thought of fitting the 10TW1-2 in the Escalade box? The dimensions seem to line up better than the TW3.

That combo is about $625 cheaper than the JL stealth box. I bet that with any aftermarket amp is light years better than the ~6.5” Bose and still twice as good as the AKG system in the Escalade.

10TW1-2

TW1 10-inch Subwoofer (300 W, 2 Ω) Built on JL Audio's patented thin-line subwoofer technology, the 10TW1 delivers a powerful combination of shallow mounting depth and excursion capability, while operating in insanely small enclosures (0.35 cu.ft. / 10 liters). This, combined with a special...

www.jlaudio.com

Don’t think that one will fit. I did not measure the mounding depth of the enclosure as it will depend on the width of the subwoofer magnet. The box follows the contour of the wheel well, shallow at the corner and sloping down towards the center.

The TW3 had to be clocked precisely so the basket straddled that contour and the magnet barely cleared it as well.

 

[iamlegion]

Don’t think that one will fit. I did not measure the mounding depth of the enclosure as it will depend on the width of the subwoofer magnet. The box follows the contour of the wheel well, shallow at the corner and sloping down towards the center.

The TW3 had to be clocked precisely so the basket straddled that contour and the magnet barely cleared it as well.

I was afraid of that. I have all the stuff coming… I think when I saw past pictures where someone showed the mounting depth I foolishly assumed that was the minimum depth since that’s the obviously important measurement.

I am hoping I could use a heat gun and mold the hump down a little to make room, then fabricate a thick rubber gasket to mount between the sub box and speaker to buy me 1/8”-1/4”.

I do see the TW3 is a good 1” shallower than the T1 but I was really hoping to avoid cutting the box or the speaker. The box is also too large for either speaker so maybe between that problem and mounting a speaker I’ll just bite the bullet and order the stealth box…

 

[K5-Z71]

I considered mapping the mounting depth relative to the edge distance but it seemed more trouble than it’s worth since most drivers do not include the dimms of the magnet. The TW3 has a very wide magnet compared to other 10’s I’ve worked with so maybe a more traditional design will fit better.

If I were to do it again I’d get the stealth box or just one of the woofers others have confirmed to fit. I don’t think there is much benefit to a larger driver as it’s installed behind a sidewall in a relatively poor position to start with. However, bigger is better and nothing sounds better than your own custom work!

 

[iamlegion]

I considered mapping the mounting depth relative to the edge distance but it seemed more trouble than it’s worth since most drivers do not include the dimms of the magnet. The TW3 has a very wide magnet compared to other 10’s I’ve worked with so maybe a more traditional design will fit better.

If I were to do it again I’d get the stealth box or just one of the woofers others have confirmed to fit. I don’t think there is much benefit to a larger driver as it’s installed behind a sidewall in a relatively poor position to start with. However, bigger is better and nothing sounds better than your own custom work!

I decided to go with the stealth box, I don’t have time to fart around with mating a speaker to the Escalade box.

The LC2i almost threw me for a loop - when I was setting the sub level it kept clipping really early until I realized the main level out was also up… they should have you turn that down in the instructions.

it took a good 15-30 minutes to set the accubass, loc out levels, and the amp input level. I used an ANC termination harness.. worked like a charm. I left the loc knob by the jack access since I don’t foresee adjusting it all the time.

Sounds fantastic. Let me know if anyone has any questions.

 

[los2050sp]

Where did you guys ground your amps? Any Pics?