Denali subwoofer and amp install 2022

[JohnnyFamous]

Hey all,

so she arrived, 6 months later. I am speechless and an amazing truck!

As I was expecting the bose subwoofer is not even in the ballpark. the rest sound ok, I can hear the speakers fighting to create bass and they just can't. I have a fair bit of experience building and wiring some high-end car audio systems back in the 90s and lots of current experience with audiophile home systems. I know things have changed since the 90s

Originally I was thinking I would find a place to do a simple sub install, but the more I ask around, the less I trust anyone to work on this thing, they just don't know what they are talking about. I found the Bose sub in the back left quarter panel, and I was surprised to see the fuse box right next to it, got me excited thinking that I could mount AND wire the amp right there off of the fuse box, or close by anyway. Thoughts? I had visions of having to run a power supply all the way to the battery. I suppose that is still probably ideal but I would prefer not to if I can help it, it sure is a far distance. Also, it appears I can just get an amp with high-level inputs and unplug the bose right there?

I plan to run a small 200-400 watt RMS amp and then build a small ported enclosure for a JL 12TW3-D4 2 inch subwoofer. There really is not much room what the 3rd row up.

Any thoughts or experience with the wiring back there on a 21 or 22??

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[Joseph Garcia]

2 points:

For the JL W3 speaker, I would recommend an amp with a minimum 500 watts RMS, as that speaker needs some real power to make it sound full.

Check the size of the wire going into that fuse box. Unless it is a heavy gauge wire, #6 or lower, you are still going to have to run a power wire out to that battery to power the amp.

 

[mikew2069]

Where is the stock sub? Is it behind the plastic grate to the right of the open panel in your picture? I think I'll just want a slight upgrade from stock so might just look at replacing the stock sub and keep it in the same location so I don't lose space.

 

[JohnnyFamous]

Where is the stock sub? Is it behind the plastic grate to the right of the open panel in your picture? I think I'll just want a slight upgrade from stock so might just look at replacing the stock sub and keep it in the same location so I don't lose space.

It is, yes. just to the right of the fuse box. I have been unable to locate any "stealth boxes" yet as they haven't been manufactured yet. I reached out to JL audio, the main builder of quality hidden boxes and they said it was "in the works"... I can't wait. I think a good shop could do up a fibreglass box that would fit in there. I got a great deal on this 10" not installed yet, but It can be removed if extra space is required, and certainly will hold me over until something better is made.

 

[JohnnyFamous]

I was told today that bose systems may have bass attenuation, which lower bass as the volume is turned up to reduce distortion. Any news of this? I would hope not.

 

[R32driver]

I was told today that bose systems may have bass attenuation, which lower bass as the volume is turned up to reduce distortion. Any news of this? I would hope not.

This seems likely. Ours bumps at lower to moderate volume, but not so much if you crank it up

 

[ljn21]

I was told today that bose systems may have bass attenuation, which lower bass as the volume is turned up to reduce distortion. Any news of this? I would hope not.

Really typical of Bose today as well as other upgraded systems, there is usually some processing of the signals which make getting a clean signal for an add on amp a struggle. On my Raptor l, I have been thinking about adding a sub and while it has a B&O system and not Bose, it has the same signal attenuation issue. It was recommended to me to wire in a LC2i off a set of the speakers in stead of trying to get a signal with a piggyback harness at the amp. It seemed to complicated for my uneducated mind so I gave up on it but assume the same process could be applied to the Yukon/Tahoe if you can grab speaker level inputs somewhere to wire in the LC2i.

 

[jl449]

Bose system is tricky and I believe the Denali has the Active Noise Cancellation. Kicker has a sub woofer system for the 2015 to 2019 Yukon compatible with the Bose system (GM p/n 19355506). It also has instructions to disable the ANC. Hopefully they will come out with a sub woofer for 21+ compatible with the bose system. Ljn21 mention LC2i -- I would leave that to the audio gurus.

 

[eyebereej]

Check out this subwoofer thread from 2020/2021. Has some info regarding ANC.
Thread 'Aftermarket sub'
https://www.tahoeyukonforum.com/threads/aftermarket-sub.123168/

 

[mikew2069]

How much space is there under the 2nd row captains? Might just throw a powered sub under there while JL works on their stealth box.

I don’t take delivery for another 4 weeks or so so I can’t just go look.