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??

​

 

[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.

 

[WalleyeMikeIII]

Might be tricky putting a sub under the 2nd row captians since they flip up and slide back and forth, there is a fair amount of mechanical stuff under there.

To the OP, there is definitely room to mount an amp under the floor in the cargo area, and it might allow you to run your power supply wires outside the vehicle, along the frame, to the rear then come in through the floor. But, as for where to put the sub...thats a tougher call.

 

[mikew2069]

I went ahead and ordered a Kicker HS10. If I can't fit it under one of the seats, I'll just put it in the cargo area and remove it when I need the space. It has a quick connect so it'll be a quick removal/reinstall when I have to.

 

[Tonyv__]

I don’t know much about the new 2021+ trucks. But just my 2cents. I wouldn’t even consider installing any amp off that fuse box. The risk of overloading that wire and ruining something down the line wouldn’t be worth it. I’d just run 4g OFC to the battery and call it a day. You’ll always have room to upgrade again if needed. I imagine you’ll never need to step into the 0 gauge realm unless you’re gonna go really high end with the Audio system

 

[mikew2069]

I don’t know much about the new 2021+ trucks. But just my 2cents. I wouldn’t even consider installing any amp off that fuse box. The risk of overloading that wire and ruining something down the line wouldn’t be worth it. I’d just run 4g OFC to the battery and call it a day. You’ll always have room to upgrade again if needed. I imagine you’ll never need to step into the 0 gauge realm unless you’re gonna go really high end with the Audio system

Agree. For me, getting the power from the battery will be the easiest part of the install. Now just need to figure out how to get signal and where to connect the remote wire.

 

[Fast_AT4]

Agree. For me, getting the power from the battery will be the easiest part of the install. Now just need to figure out how to get signal and where to connect the remote wire.

Any input from others that have added on an additional amp to power a sub setup would be grand. Is my logic correct that an LC2i will be required to get the remote source (and use a jumper into the power to allow the LC2i to turn on when the Yukon starts) from the Bose amp? If so, do we happen to know which colored wires are to be used for the remote wire source from the Bose amp?

I will be running power straight from the battery due to how I know I am...always wanting more. For now, I feel that the only lacking part of the stock audio system is the bass aspect <hence the reason for the LCi2 vs an LC7i. But if down the road I want to upgrade the satellites, at least the power/remote will be ready.

Initial though:
1 Audio Control LC2i
2 Sundown X8 D2
1 Sundown SAE-3000D

#HairTricks

 

[mikew2069]

Any input from others that have added on an additional amp to power a sub setup would be grand. Is my logic correct that an LC2i will be required to get the remote source (and use a jumper into the power to allow the LC2i to turn on when the Yukon starts) from the Bose amp? If so, do we happen to know which colored wires are to be used for the remote wire source from the Bose amp?

I will be running power straight from the battery due to how I know I am...always wanting more. For now, I feel that the only lacking part of the stock audio system is the bass aspect <hence the reason for the LCi2 vs an LC7i. But if down the road I want to upgrade the satellites, at least the power/remote will be ready.

Initial though:
1 Audio Control LC2i
2 Sundown X8 D2
1 Sundown SAE-3000D

#HairTricks

Does the Sierra Denali have the same amp? Wonder if this would work? https://soundsgoodstereo.com/produc..._medium=notification_email&utm_source=spently

 

[Fast_AT4]

Does the Sierra Denali have the same amp? Wonder if this would work? https://soundsgoodstereo.com/products/custom-made-t-harness-for-bose-compatible-with-2019-2021-gmc-sierra-chevrolet-silverado-vehicles?utm_campaign=Spently Order Confirmation Email&utm_medium=notification_email&utm_source=spently

Nice...time to do a live chat.

 

[Fast_AT4]

Looks like we have a winner here.


Sounds Good Stereo OnlineGot it, so just make sure your amplifier can handle 6v of input on the RCA side

 

[mikew2069]

Looks like we have a winner here.


Sounds Good Stereo OnlineGot it, so just make sure your amplifier can handle 6v of input on the RCA side


View attachment 369533

Nice. Are you going to order one? I see you've started to make some pretty nice vids. If you do get this, please do a video on your install!

 

[Fast_AT4]

Nice. Are you going to order one? I see you've started to make some pretty nice vids. If you do get this, please do a video on your install!

Yep, moved higher up on my list. Not ready for audio just yet, but need to lay the pipework. Much thanks...and yes, a video will be made