My stereo build! JL Stealthbox, Focal K2s, etc..

[pilot650]

So jl knows about the issue and is modifying their amps going forward to fix it and providing customers with a new amp if having the issue. Eric Cole (JL Audio) Jan 25, 2023, 08:33 EST Hello, our engineers have found that the current generation Dodge and GM vehicles have changed the carrier frequency of the TPMS on newer vehicles. It was found that one of the circuits in VXi was operating close to this carrier frequency and could cause issues. We have already adopted a solution for all amplifiers that are in house to be shipped out. If you had the system installed by an authorized dealer the dealer can submit for an RA and have modified amplifiers advanced shipped to them so that you can schedule a swap out. If you purchased them and installed them yourself I can transfer this ticket to customer service and they can assist you with a return in exchange for modified amplifiers that will not have this issue. Which model VXi do you have? Were they purchased through and authorized dealer? Eric Cole Technical Support Specialist Visit the JL Audio Website Get more answers in the Help Center Test drive TüN DSP Software for FREE

 

[OnTheReel]

So jl knows about the issue and is modifying their amps going forward to fix it and providing customers with a new amp if having the issue. Eric Cole (JL Audio) Jan 25, 2023, 08:33 EST Hello, our engineers have found that the current generation Dodge and GM vehicles have changed the carrier frequency of the TPMS on newer vehicles. It was found that one of the circuits in VXi was operating close to this carrier frequency and could cause issues. We have already adopted a solution for all amplifiers that are in house to be shipped out. If you had the system installed by an authorized dealer the dealer can submit for an RA and have modified amplifiers advanced shipped to them so that you can schedule a swap out. If you purchased them and installed them yourself I can transfer this ticket to customer service and they can assist you with a return in exchange for modified amplifiers that will not have this issue. Which model VXi do you have? Were they purchased through and authorized dealer? Eric Cole Technical Support Specialist Visit the JL Audio Website Get more answers in the Help Center Test drive TüN DSP Software for FREE

Thanks for sharing. Whatever change Ram made must have been for 2022 and up. What a pain.

 

[smfitzy]

Mine are getting switched out next week

 

[pilot650]

Well it took about 2 weeks but JL sent me a new amp. The TPMS still malfunctions after a few minutes of driving which is an improvement but not a solution. Waiting to see what else they have to say.

 

[smfitzy]

Well it took about 2 weeks but JL sent me a new amp. The TPMS still malfunctions after a few minutes of driving which is an improvement but not a solution. Waiting to see what else they have to say.

Mine were replaced last Tuesday and TPMS and key fob issues are fixed

 

[pilot650]

Mine were replaced last Tuesday and TPMS and key fob issues are fixed

They sent another amp and issues are resolved finally.

 

[YungDaz]

Do you guys have the manufactured date of the new amps sent out? Had same issue previous amp have a manufactured date from 2021. Just received a new amp with Jan 2023 date. Hopefully this one is updated.

 

[Anu2g]

The Alpine has a triple voice coil sub and it doesn’t have upper door tweeters.

The HK only has a single voice coil sub, so the two sets of wires in the CH03 harness that would be for the sub’s extra voice coils on Alpine are used for the upper door speakers instead with the HK system. Ultimately both systems have the same number of wires and channels, so the pigtail harness works with either.

The harness comes with this sheet so you can record all the speaker wire colors on before you wire everything up.View attachment 51505
I believe everything will be the same on the HK, save for two of the subwoofer channels being used for the left and right upper door speakers instead. Either way, you can buy an inexpensive tone generator from PAC to confirm the locations and colors before proceeding.

This is very helpful; thank you. Has anyone confirmed which channels (between 5, 6, and 7) are for the left and right tweeters on the HK setup? I can certainly test it out, but if someone already knows the answer it saves me some steps when I'm in the thick of the install.

Thank you!

 

[Anu2g]

Hope this helps people in the future. In the simplest terms:

The PAC AP4-CH41 module mounts behind the dash and intercepts the pre-amp signal to send to your new amp. It includes the correct harness for 2021 trucks. For 2022+, you need to buy the APH-CH42 separately to connect the CH41 module.

From that PAC CH41 module, you only run either your optical or RCA cables back to your new amp, and your turn on wire. No speaker connections are made up there with a factory amplified system.

To actually connect the new amp to the speakers, the APH-CH03 harness is used under the drivers seat. This works in any model year and any system (Alpine or HK).

The APH-CH03 comes with a sheet of paper where you can log what / where each speaker is by wire color on the PAC harness. This will vary based on the system (and possibly even just harness to harness with the way things are built) so it’s best to check for yourself.

To do so, I unplugged the amp, plugged in the CH03 harnesses, and used a tone generator on the speaker wires to locate and label the speakers.View attachment 84315
Once this is done, everything gets a hell of a lot clearer. Speakers you want to remain factory amplified are simply connected to the other side of the CH03 harness (so they just pass from the factory amp through the CH03, and out to the speakers).

Speakers you’re going to amplify aftermarket are NOT connected to the factory amp side, and you can simply extend and run your new wiring from the CH03 up to the new amp.View attachment 84316
After further “cleanup”:
View attachment 84317

Seeing the full sheet of paper in this pic would be super helpful if you still have it

 

[PabloK]

that PAC CH41 module, you only run either your optical or RCA cables back to your new amp, and your turn on wire. No speaker connections are made up there with a factory amplified syst

dude.... what an incredible build. You know your stuff.

Do you do this on the side? I'm in MN....

would really interested in building something like this for my truck (obviously pay you whatever you need)

it's very very hard to find good audio shops and installers.

 

[OnTheReel]

This is very helpful; thank you. Has anyone confirmed which channels (between 5, 6, and 7) are for the left and right tweeters on the HK setup? I can certainly test it out, but if someone already knows the answer it saves me some steps when I'm in the thick of the install.

Thank you!

I had a PDF with all my stereo stuff. I’ll DM you when I find it.

dude.... what an incredible build. You know your stuff.

Do you do this on the side? I'm in MN....

would really interested in building something like this for my truck (obviously pay you whatever you need)

it's very very hard to find good audio shops and installers.

Thanks for the kind words. It’s just a hobby for me. I’d never have the time to do installs on the side. Even this one was done over the course of several weeks whenever I had a few spare hours. Good shops are scarce around here so I just trained myself years ago. Honestly 99% of it is really straightforward. The tuning is the only thing where it’s more art than science.

 

[PabloK]

I had a PDF with all my stereo stuff. I’ll DM you when I find it.

Thanks for the kind words. It’s just a hobby for me. I’d never have the time to do installs on the side. Even this one was done over the course of several weeks whenever I had a few spare hours. Good shops are scarce around here so I just trained myself years ago. Honestly 99% of it is really straightforward. The tuning is the only thing where it’s more art than science.

What are your thoughts on just running the stock HK system with the stealthbox, 1000 jl amp? how does she sound?

What other parts do i need? Both of these?

PAC AmpPRO AP4-CH41 Aftermarket Amplifier Interface

Allows seamless addition of an amplifier in select 2014-up Chrysler-made vehicles

www.crutchfield.com

PAC APH-CH42 AmpPro Harness

T-harness for adding an aftermarket amp, LOC, or signal processor to select 2021-up Chrysler, Dodge, and RAM vehicles with factory amp

www.crutchfield.com

 

[PabloK]

I had a PDF with all my stereo stuff. I’ll DM you when I find it.

Thanks for the kind words. It’s just a hobby for me. I’d never have the time to do installs on the side. Even this one was done over the course of several weeks whenever I had a few spare hours. Good shops are scarce around here so I just trained myself years ago. Honestly 99% of it is really straightforward. The tuning is the only thing where it’s more art than science.

well for a hobby you're pretty damn good at this. Man i wish i had a shop i trust. I've had a couple shitty experiences... spent too much money on systems that were horribly tuned and not hooked up properly.

 

[OnTheReel]

What are your thoughts on just running the stock HK system with the stealthbox, 1000 jl amp? how does she sound?

What other parts do i need? Both of these?

PAC AmpPRO AP4-CH41 Aftermarket Amplifier Interface

Allows seamless addition of an amplifier in select 2014-up Chrysler-made vehicles

www.crutchfield.com

PAC APH-CH42 AmpPro Harness

T-harness for adding an aftermarket amp, LOC, or signal processor to select 2021-up Chrysler, Dodge, and RAM vehicles with factory amp

www.crutchfield.com

Yep, those will give your sub a clean pre-amp signal. From there you just run RCAs or TOSLINK (and power) back to the sub amp. Pretty straightforward deal and definitely fills in the bottom end where the HK falls apart and gets boomy at higher volumes.

 

[PabloK]

Yep, those will give your sub a clean pre-amp signal. From there you just run RCAs or TOSLINK (and power) back to the sub amp. Pretty straightforward deal and definitely fills in the bottom end where the HK falls apart and gets boomy at higher volumes.

perfect.. you go toslink right? and i think you get the 1000 amp. why not

i've owned about 6 stealthbox setups... they're great.

first one was in a 2001 bmw x5..... they've come along way.

JL Audio Stealthbox® Custom-fit sub box for 2000-2006 BMW X5 (SB-B-X5/10W1v3)

www.sonicelectronix.com

 

[OnTheReel]

perfect.. you go toslink right? and i think you get the 1000 amp. why not

i've owned about 6 stealthbox setups... they're great.

first one was in a 2001 bmw x5..... they've come along way.

JL Audio Stealthbox® Custom-fit sub box for 2000-2006 BMW X5 (SB-B-X5/10W1v3)

www.sonicelectronix.com

Yes I am using the VX1000/1 connected via toslink. If you do that you’d also need to install this into the PAC module which is no big deal:

Toslink Fiber-Optic Audio Output

Add-on accessory for AmpPRO interfaces to provide a pure digital output for aftermarket amplifier and/or DSP installation

catalog.pac-audio.com

I would also check with JL to make sure they fixed the interference with their VXi amps and the TPMS system on 2022+ trucks. I am pretty sure they did as long as you don’t get an old stock one.

 

[PabloK]

good man. thanks for the solid advice.

done a couple serious builds but it's been years - spend soooo much money on this stuff.

had a real nice wrangler the w/ focals and a flir night vision camera .... a gmc at4 with all jl C7s and stealthox...


biggest was my 335 - still to this day struggling to tune it.

Front stage:
Dynaudio E430
Dynaudio MD102
Jehnert XE200
Rear stage:
Morel Hybrid Integra 402
Processing:
Mobridge DA2
Helix DSP Pro
Amps:
Mosconi One 130.4 (Front doors)
Mosconi One 130.4 (Rear shelf)
Mosconi One 240.2 (Under seat drivers)
Mosconi One 1000.1D (Trunk sub)
Accessories:
Mosconi RTC (Trunk sub adjustment dial)
Processing:
Da2-
Input- BMW MOST, using orange extension harness and provided BMW sleeve
Output- Low level RCA, channels 1-2 connect to input A-B on Helix DSP Pro
channels 7-8 connect to input C-D on Helix DSP Pro
Amp Designation:
1) 130.4 (front stage, top left amp) Mid connects to channels 1-2, tweeter connects to 3-4.
2) 130.4 (rear shelf, top right amp) This amp only has signal input for the front inputs of the amp. There are Mosconi crossover chips to bandpass the rear speakers for a fully active rear speaker set up. Mid connects to 1-2, tweeter connects to 3-4.
3) 240.2 (under seat, bottom left amp)
4) 1000.1 (trunk sub, bottom right amp)

Rear:
Morel Hybrid Integra 402

 

[OnTheReel]

good man. thanks for the solid advice.

done a couple serious builds but it's been years - spend soooo much money on this stuff.

had a real nice wrangler the w/ focals and a flir night vision camera .... a gmc at4 with all jl C7s and stealthox...


biggest was my 335 - still to this day struggling to tune it.

Front stage:
Dynaudio E430
Dynaudio MD102
Jehnert XE200
Rear stage:
Morel Hybrid Integra 402
Processing:
Mobridge DA2
Helix DSP Pro
Amps:
Mosconi One 130.4 (Front doors)
Mosconi One 130.4 (Rear shelf)
Mosconi One 240.2 (Under seat drivers)
Mosconi One 1000.1D (Trunk sub)
Accessories:
Mosconi RTC (Trunk sub adjustment dial)
Processing:
Da2-
Input- BMW MOST, using orange extension harness and provided BMW sleeve
Output- Low level RCA, channels 1-2 connect to input A-B on Helix DSP Pro
channels 7-8 connect to input C-D on Helix DSP Pro
Amp Designation:
1) 130.4 (front stage, top left amp) Mid connects to channels 1-2, tweeter connects to 3-4.
2) 130.4 (rear shelf, top right amp) This amp only has signal input for the front inputs of the amp. There are Mosconi crossover chips to bandpass the rear speakers for a fully active rear speaker set up. Mid connects to 1-2, tweeter connects to 3-4.
3) 240.2 (under seat, bottom left amp)
4) 1000.1 (trunk sub, bottom right amp)

Rear:
Morel Hybrid Integra 402

Dang that setup has all the good stuff. Very nice. My experience with tuning is pretty limited but I know what sounds good. Or at least what sounds good to me.

Pretty much anyone can do a good install with decent tools, pre-planning and some patience. Tuning is definitely where a good stereo guy earns his keep though.

 

[PabloK]

Tuning is definitely where a good stereo guy earns his keep though.

i couldn't agree more... so true

 

[MontanaTRX420]

There should have been a disclaimer “Don’t try this at home”

You are my new hero. Wish I could hear it.