My 2022 Tahoe Bose Audio Mods

[BigRedRST]

I found a pretty interesting way to improve the low end of the Bose system in my '21 Tahoe. I'm actually a little shocked that I hadn't seen someone try this angle before. I had been looking at the JL Stealthbox, but was having a really hard time separating myself from the $1,200 that they're asking for it. I love JL gear, but that's pretty aggressive for an unpowered sub and box. I did a little searching and realized that AKG has now replaced Bose as the preferred audio provider for the new-gen Escalade. Their stock package includes a 265mm (10.4") sub in the same rear compartment space as the Tahoe sub. I found the part number online and ended up pulling the trigger for $200 shipped from OEMPartsquick.com. I pulled the stock speaker from the box, filled it loosely with Polyfil (this is a standard for all of the boxed I've built) and dropped in a Fosgate Prime R2DS 10" shallow-mount woofer.

View attachment 394294 View attachment 394295 View attachment 394296

The amp is a Boss Audio Riot R1100M. I understand it's not top of the line, but it has worked perfectly for me on multiple occasions in the past. I downloaded the Stealthbox installation sheet from the JL website, namely because it gives you a step-by-step deconstruction of the panels, seat belts, etc. to get to the sub installation location in the rear of the truck. My new box dropped right in and even used the attachment bolts that were already in place. I added washers and M6x1 nut with a Teflon ring to the top two mounting points for more security.

View attachment 394297 View attachment 394298

I mounted the amp in the storage space in the rear, drilled a hole in the side, added a grommet to keep it neat/clean and wired it up. It was mounted on the right side of the space so that I would still have access to the controls on the side and not have to bend the power and ground wire in a way that would create stress on the connections. I drilled four holes and used two 1" pieces of flat bar with drilled holes to allow the plastic tray to maintain stability underneath and not pull through the plastic when it was tightened. This part was probably overkill, but it made me feel better about it. I tapped in to the rear door speaker wires for the hi/lo converter, plugged in the RCA cables and fired it up. Side note - I don't have ANC, so I was able to get around using an aftermarket harness or an LCi2. True to form, this set up blows doors, y'all. If my wife rolling her eyes means that I was successful, then I pretty much became president of the world after this one. I am beyond happy.

Sorry for being so wordy, but I tried to include everything that I would have asked in this write up. If I missed something or if you have any other questions, let me know. Have a good one!!

Subwoofer enclosure: https://www.oempartsquick.com/oem-p...UGGYnKpuucxBPFt5Yw49bNduSb7VjdQkaAsK7EALw_wcB

Amplifier: https://www.amazon.com/Watts-Mosfet-Monoblock-Amplifier-R1100M/dp/B004S4XNEO

Subwoofer: https://www.amazon.com/gp/product/B005C1R9CE/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Converter: https://www.amazon.com/gp/product/B001EAWS3W/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Wiring kit: https://www.amazon.com/gp/product/B0002VM8RU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Installation instructions: https://jlaudio.widen.net/s/v9g9c2qdms/sb_gm_5gsuv_man

Any chance you have more pictures of your wiring ends and amp? I bought all the stuff you recommended, but want to make sure I route all the wires in the ideal way and don't miss any important steps

 

[iamlegion]

On your LC2i Pro, did the GTO setting work for signal detection? Or did you use a standard remote turn on?

GTO, but I’ll confirm this weekend as I have more work to do this weekend and confirm. I lasted the manual below, I think this will depend on where and how you’re picking up the signal source.


GTO Signal Sense


DC offset is a high falutin technical term that means


the LC2i PRO can sense when the head unit is on, not


necessarily when audio is being sent to the LC2i PRO. Use


GTO Signal Sense mode when your factory sound system


outputs a DC offset when it is on.


Audio Sense


When this mode is selected, the LC2i PRO will ONLY


turn on when you start playing a source from the head


unit. Whether it be the radio, CD player or streaming via


Bluetooth from a mobile device. If you turn the head unit


on, but DON’T play audio, the LC2i PRO will not turn on.


Remote Input


This is the traditional way to turn on the LC2i PRO and


gives you more control of exactly when the unit will turn


on. Most common places to connect the remote input


are from the ignition of the vehicle, fuse box, or some


other 12V source (such as a cigarette lighter).

 

[DwDrummer]

Great thread! Where are some of the factory ground points to ground the amp on a 24 Tahoe? I didn’t go with a stealthbox but most of these amp wiring kits only give maybe 3’ of ground wire.

Thanks,
DW

 

[derfman00]

I found a pretty interesting way to improve the low end of the Bose system in my '21 Tahoe. I'm actually a little shocked that I hadn't seen someone try this angle before. I had been looking at the JL Stealthbox, but was having a really hard time separating myself from the $1,200 that they're asking for it. I love JL gear, but that's pretty aggressive for an unpowered sub and box. I did a little searching and realized that AKG has now replaced Bose as the preferred audio provider for the new-gen Escalade. Their stock package includes a 265mm (10.4") sub in the same rear compartment space as the Tahoe sub. I found the part number online and ended up pulling the trigger for $200 shipped from OEMPartsquick.com. I pulled the stock speaker from the box, filled it loosely with Polyfil (this is a standard for all of the boxed I've built) and dropped in a Fosgate Prime R2DS 10" shallow-mount woofer.

View attachment 394294 View attachment 394295 View attachment 394296

The amp is a Boss Audio Riot R1100M. I understand it's not top of the line, but it has worked perfectly for me on multiple occasions in the past. I downloaded the Stealthbox installation sheet from the JL website, namely because it gives you a step-by-step deconstruction of the panels, seat belts, etc. to get to the sub installation location in the rear of the truck. My new box dropped right in and even used the attachment bolts that were already in place. I added washers and M6x1 nut with a Teflon ring to the top two mounting points for more security.

View attachment 394297 View attachment 394298

I mounted the amp in the storage space in the rear, drilled a hole in the side, added a grommet to keep it neat/clean and wired it up. It was mounted on the right side of the space so that I would still have access to the controls on the side and not have to bend the power and ground wire in a way that would create stress on the connections. I drilled four holes and used two 1" pieces of flat bar with drilled holes to allow the plastic tray to maintain stability underneath and not pull through the plastic when it was tightened. This part was probably overkill, but it made me feel better about it. I tapped in to the rear door speaker wires for the hi/lo converter, plugged in the RCA cables and fired it up. Side note - I don't have ANC, so I was able to get around using an aftermarket harness or an LCi2. True to form, this set up blows doors, y'all. If my wife rolling her eyes means that I was successful, then I pretty much became president of the world after this one. I am beyond happy.

Sorry for being so wordy, but I tried to include everything that I would have asked in this write up. If I missed something or if you have any other questions, let me know. Have a good one!!

Subwoofer enclosure: https://www.oempartsquick.com/oem-p...UGGYnKpuucxBPFt5Yw49bNduSb7VjdQkaAsK7EALw_wcB

Amplifier: https://www.amazon.com/Watts-Mosfet-Monoblock-Amplifier-R1100M/dp/B004S4XNEO

Subwoofer: https://www.amazon.com/gp/product/B005C1R9CE/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Converter: https://www.amazon.com/gp/product/B001EAWS3W/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Wiring kit: https://www.amazon.com/gp/product/B0002VM8RU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Installation instructions: https://jlaudio.widen.net/s/v9g9c2qdms/sb_gm_5gsuv_man

This post should be its own thread!

I have the box and sub so far. Getting the rest ordered today.

Tempted to get a better amp but for $77 I'll risk it

 

[derfman00]

How do I tell if I have ANC on a 2022 with the Bose 10 speaker system?

 

[TheRickyP]

How do I tell if I have ANC on a 2022 with the Bose 10 speaker system?

I believe if you have a Bose audiopilot setting in the infotainment screen. It's where you control the eq and fade and balance i think.

 

[TheRickyP]

Where can i get the ANC bypass?

 

[kerlyb]

If anyone wants to add subwoofer to their GM SUV w/ Bose system, I have a new T-harness for 2014-2024 Bose R2G if anyone is interested. $60 shipped. Just PM me.

Sorry but I don't have the minimum posts needed to list in Classifieds section.

 

[hellz]

From what i have found, the off road vehicles, aka Z71/AT4 do not have the ANC enabled.

can anyone else confirm?

i am about to do this install myself
just waiting on the Tharness because i dont really want to tap into the wires, prefer a cleaner install, aka removable without a trace.

 

[hellz]

scammer alert.

Do not buy anything from T-Harness.com

Ordered a T-harness through them, they shipped it but did a return to sender the next day.

Phone number comes back as reported with other scams.

Website register provides no info

No answer to calls, texts or emails.

They got me for $91 bucks

 

[SavageDad]

scammer alert.

Do not buy anything from T-Harness.com

Ordered a T-harness through them, they shipped it but did a return to sender the next day.

Phone number comes back as reported with other scams.

Website register provides no info

No answer to calls, texts or emails.

They got me for $91 bucks

Call your bank/card company and have them reverse the transaction.

 

[Hawkcrj]

I found a pretty interesting way to improve the low end of the Bose system in my '21 Tahoe. I'm actually a little shocked that I hadn't seen someone try this angle before. I had been looking at the JL Stealthbox, but was having a really hard time separating myself from the $1,200 that they're asking for it. I love JL gear, but that's pretty aggressive for an unpowered sub and box. I did a little searching and realized that AKG has now replaced Bose as the preferred audio provider for the new-gen Escalade. Their stock package includes a 265mm (10.4") sub in the same rear compartment space as the Tahoe sub. I found the part number online and ended up pulling the trigger for $200 shipped from OEMPartsquick.com. I pulled the stock speaker from the box, filled it loosely with Polyfil (this is a standard for all of the boxed I've built) and dropped in a Fosgate Prime R2DS 10" shallow-mount woofer.

View attachment 394294 View attachment 394295 View attachment 394296

The amp is a Boss Audio Riot R1100M. I understand it's not top of the line, but it has worked perfectly for me on multiple occasions in the past. I downloaded the Stealthbox installation sheet from the JL website, namely because it gives you a step-by-step deconstruction of the panels, seat belts, etc. to get to the sub installation location in the rear of the truck. My new box dropped right in and even used the attachment bolts that were already in place. I added washers and M6x1 nut with a Teflon ring to the top two mounting points for more security.

View attachment 394297 View attachment 394298

I mounted the amp in the storage space in the rear, drilled a hole in the side, added a grommet to keep it neat/clean and wired it up. It was mounted on the right side of the space so that I would still have access to the controls on the side and not have to bend the power and ground wire in a way that would create stress on the connections. I drilled four holes and used two 1" pieces of flat bar with drilled holes to allow the plastic tray to maintain stability underneath and not pull through the plastic when it was tightened. This part was probably overkill, but it made me feel better about it. I tapped in to the rear door speaker wires for the hi/lo converter, plugged in the RCA cables and fired it up. Side note - I don't have ANC, so I was able to get around using an aftermarket harness or an LCi2. True to form, this set up blows doors, y'all. If my wife rolling her eyes means that I was successful, then I pretty much became president of the world after this one. I am beyond happy.

Sorry for being so wordy, but I tried to include everything that I would have asked in this write up. If I missed something or if you have any other questions, let me know. Have a good one!!

Subwoofer enclosure: https://www.oempartsquick.com/oem-p...UGGYnKpuucxBPFt5Yw49bNduSb7VjdQkaAsK7EALw_wcB

Amplifier: https://www.amazon.com/Watts-Mosfet-Monoblock-Amplifier-R1100M/dp/B004S4XNEO

Subwoofer: https://www.amazon.com/gp/product/B005C1R9CE/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Converter: https://www.amazon.com/gp/product/B001EAWS3W/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Wiring kit: https://www.amazon.com/gp/product/B0002VM8RU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Installation instructions: https://jlaudio.widen.net/s/v9g9c2qdms/sb_gm_5gsuv_man

Will this enclosure fit into a 2025 Tahoe? does anyone know if theres also a 6" sub in the center console? Thanks for the help guys and what a great thread!

 

[hellz]

yes it will fit without any modifications or issues

i bought mine off amazon

using a CT sounds Hydro 2D
did have to use a heat gun to mold the bottom a bit to get the sub to fit
but you can buy other subs listed in the thread that drop in without issue

 

[Hawkcrj]

Here's the link for the Drivers rear kick panel removal instructions https://static.garmin.com/pumac/SB_GM_5GSUV_MAN.pdf

Also, has anyone completely replaced the Bose AMP with something a 5 channel amp like this? https://rockfordfosgate.com/products/details/r600x5/

I also have dash and door speakers to upgrade everything.

Anyone know the size of the small rear pillar speakers? 3.5's maybe?

 

[K5-Z71]

Rear pillar speakers are same as front corner speakers.

Don’t think five channels will be enough to replace factory amp with. Each speaker needs to be driven independently to avoid integration issues.

If I were to attempt a full factory amp bypass I’d use this:

https://www.audiotec-fischer.de/en/helix/amplifiers/v-eight-dsp-mk2

 

[SavageDad]

Rear pillar speakers are same as front corner speakers.

Don’t think five channels will be enough to replace factory amp with. Each speaker needs to be driven independently to avoid integration issues.

If I were to attempt a full factory amp bypass I’d use this:

https://www.audiotec-fischer.de/en/helix/amplifiers/v-eight-dsp-mk2

Looks interesting but some of the reviews I'm seeing mention overheating and clipping issues.

 

[Wattage2004]

.

I found a pretty interesting way to improve the low end of the Bose system in my '21 Tahoe. I'm actually a little shocked that I hadn't seen someone try this angle before. I had been looking at the JL Stealthbox, but was having a really hard time separating myself from the $1,200 that they're asking for it. I love JL gear, but that's pretty aggressive for an unpowered sub and box. I did a little searching and realized that AKG has now replaced Bose as the preferred audio provider for the new-gen Escalade. Their stock package includes a 265mm (10.4") sub in the same rear compartment space as the Tahoe sub. I found the part number online and ended up pulling the trigger for $200 shipped from OEMPartsquick.com. I pulled the stock speaker from the box, filled it loosely with Polyfil (this is a standard for all of the boxed I've built) and dropped in a Fosgate Prime R2DS 10" shallow-mount woofer.

This write up is amazing. I just got the Escalade box from Amazon and plan on installing it this weekend. I've got to say though, it doesn't feel too sturdy and it looks like there's a seal that could be a weak point along the front outer edge of the box. How has the box held up to the bigger sub a few years after the install?

 

[SavageDad]

.

This write up is amazing. I just got the Escalade box from Amazon and plan on installing it this weekend. I've got to say though, it doesn't feel too sturdy and it looks like there's a seal that could be a weak point along the front outer edge of the box. How has the box held up to the bigger sub a few years after the install?

Unfortunately he hasn't been on since April so we'll have to wait for somebody else to chime in.

 

[Frost_z71]

.

This write up is amazing. I just got the Escalade box from Amazon and plan on installing it this weekend. I've got to say though, it doesn't feel too sturdy and it looks like there's a seal that could be a weak point along the front outer edge of the box. How has the box held up to the bigger sub a few years after the install?

Box has held up fine even after I cut into it for the aero port. Had it in the 23 then when I traded that in, took it out and installed it on the current 25. As of June this year that’s been 2 years with that setup in 2 vehicles and no issues with the box