2023+ CX-5 Bose wiring diagram?

[chlronald]

Hello,

I am in the progress to add a subwoofer to my 2023 CX-5 with Bose system.
I have referred to the thread regarding 2019 CX-5 Subwoofer installation (2019 CX-5 GTR Bose Sub Upgrade to JBL Stadium BassHub).
The amplifier is at the same location but unfortunately the number of wires are colors are completely different from the thread. (Plugs are the same though).
Do anyone have any idea which wires are the front and rear's line input?
Please see below for the as-fit color on my 2023 cx-5 plug.

Does anyone know what wire is what?? Or if anyone have 2023 workshop manual that would help too!! Thank you in advance!

 

[T-Cat]

I read in another thread that even if you tap the pre-amp wires, you will still have that 45htz roll off…. Which stinks.

Some owners are opting to use a DSP to increase the roll off and then run that to your amp then subs. Apparently that is a valid option.

 

[edmaz]

Although I haven't tried to find the information you're looking for, <this>source has been very complete for everything I have seen so far, so I'd expect that you should be able to find it there.

 

[chlronald]

T-Cat: Thanks for the information, it does seem there is multiple thread describing roll off on the input even before the Bose amp on 2020+ CX5... which is a shame since the pervious gen Bose system have linear line signal until the bose amp.

Edmaz: Thanks for the link, I have reviewed the drawing but unfortunately it doesn't have the wiring diagram included.


if there is roll off in all the signal, the proper way would be going through the DSP. But that would require a professional tuning, or more expensive one with microphone to self tune. Need to dig deeper for this option......

 

[edmaz]

...

Edmaz: Thanks for the link, I have reviewed the drawing but unfortunately it doesn't have the wiring diagram included.

...

Although I haven't searched for audio wiring, I can say that every wiring section that I have looked for is there. If you haven't seen the wiring diagrams, they're available by following the instructions for opening pages using IE instead of Edge.

 

[T-Cat]

T-Cat: Thanks for the information, it does seem there is multiple thread describing roll off on the input even before the Bose amp on 2020+ CX5... which is a shame since the pervious gen Bose system have linear line signal until the bose amp.

Edmaz: Thanks for the link, I have reviewed the drawing but unfortunately it doesn't have the wiring diagram included.


if there is roll off in all the signal, the proper way would be going through the DSP. But that would require a professional tuning, or more expensive one with microphone to self tune. Need to dig deeper for this option......

I just discovered that a “NvX bass restorer” helps a ton with the bass roll off.

I am putting my system together as I type this.

Set up is I will use the Bose sub connection, run it through the Lc2i pro (this is to account for bass turn down by using their accu base feature) > then running that through the “NVX Bass restorer” (this is to bump up the bass section from the factory tune without introducing distortion) > then sending the rca output to my amp.

Unfortunately this appears complicated but it’s super simple.

Attached are videos for both devices I’m placing inline.

Lc2i pro - Line Output Converter Explained - How to Install & Features to look for!

NVX bass restorer - Use this to make more bass! NVX Bass Processor @NVX

EDIT: 4.09.2024
Here is a video that shows using a LC2I WITH an Epicenter (Thats Audio Controls version of a Bass restorer which is more expensive and does the same thing as the NVX bass restorer). He talks about the Bass roll-off problem as well as something called "turndown" which the Mazda headunit does. This fixes both without tapping into (what seems like impossible) un-tuned sound signal from the headunit. What is the difference Between Accu Bass and an the Epicenter

EDIT: 4.09.2024 p2

USE THE EPICENTER from audio control. its the right tool. reference the video above this edit.

 

[chlronald]

Although I haven't searched for audio wiring, I can say that every wiring section that I have looked for is there. If you haven't seen the wiring diagrams, they're available by following the instructions for opening pages using IE instead of Edge.

Thanks, my laptop apparently doesn't have IE build in anymore let me check if I can find an older computer that have it to access the site again.

I just discovered that a “NvX bass restorer” helps a ton with the bass roll off.

I am putting my system together as I type this.

Set up is I will use the Bose sub connection, run it through the Lc2i pro (this is to account for bass turn down by using their accu base feature) > then running that through the “NVX Bass restorer” (this is to bump up the bass section from the factory tune without introducing distortion) > then sending the rca output to my amp.

Unfortunately this appears complicated but it’s super simple.

Attached are videos for both devices I’m placing inline.

Lc2i pro - Line Output Converter Explained - How to Install & Features to look for!

NVX bass restorer - Use this to make more bass! NVX Bass Processor @NVX

Cost would also be a consideration for this upgrade, LC2i PRO is ~200 and NVX bass restorer is ~300 CAD for just signal processing, still amplifier and subwoofer behind it.

Might want to check out Kicker KEY500.1, it has similar bass restore function build into an amplifier.

 

[T-Cat]

Thanks, my laptop apparently doesn't have IE build in anymore let me check if I can find an older computer that have it to access the site again.

Cost would also be a consideration for this upgrade, LC2i PRO is ~200 and NVX bass restorer is ~300 CAD for just signal processing, still amplifier and subwoofer behind it.

Might want to check out Kicker KEY500.1, it has similar bass restore function build into an amplifier.

Not a bad idea, I have my own sub amp so that would work in my case. but I bought my lc2i pro yesterday from Amazon for $100 usd (bought a referbished one) and the NVX bass restorer (part # xbbr2) is $69.99 on Amazon and there is also an additional $10off coupon when you check out.

 

[acidbug]

I have a 2024 CX-5 Sig with Bose

The 2024 Mazda CX-5 with Bose has different color connectors and different colored wires in different locations from my 2019 CX-5 with Bose. Here are some current pictures of the above from my 2024 CX-5 at the amp.

If anyone knows which connector is for the audio or has a correct pin out of the 24 Bose system, please let me know!

I want to wire in before the amp.

 

[teddymac]

I might be crazy, but I'm wondering if the signal is optical from the TAU to the amp via the blue connector.. as the TAU behind the glovebox has a similar connector. I could be wrong though.

 

[teddymac]

Confirmed that the communication from the TAU to the amp is a MOST bus optical connection on the newer models.

From my research there is currently no way to tap this signal, as the communication is specific to the vehicle. There are other vehicles with this type of connection, which companies have made options to convert the signal to something usable (RCA or Toslink) through a $500-$1000 component.

So we're stuck with tapping into the high-level outputs from the amp, and using something like the Kicker Keyloc (or similar) to remove the equalization and get a clean signal.

 

[N7turbo]

Confirmed that the communication from the TAU to the amp is a MOST bus optical connection on the newer models.

From my research there is currently no way to tap this signal, as the communication is specific to the vehicle. There are other vehicles with this type of connection, which companies have made options to convert the signal to something usable (RCA or Toslink) through a $500-$1000 component.

So we're stuck with tapping into the high-level outputs from the amp, and using something like the Kicker Keyloc (or similar) to remove the equalization and get a clean signal.

I'm not knowledgeable in car audio but I'm very well versed in home stereo/theater so I understand the concepts.

Before I searched your mentioned product I thought we probably have to inverse the roll-off filter to get those low frequencies up. I assume it's something like a 2nd or even 4th order filter. This will work but it will create a low frequency signal with a poor SNR. It may or may not be noticeable though with those frequencies, so I'm sure it's an overall improvement. Home theater guys do this for movies that have bass filtered out below 30Hz on the home release discs. They do this with a MiniDSP 2x4 processor.

 

[teddymac]

I'm not knowledgeable in car audio but I'm very well versed in home stereo/theater so I understand the concepts.

Before I searched your mentioned product I thought we probably have to inverse the roll-off filter to get those low frequencies up. I assume it's something like a 2nd or even 4th order filter. This will work but it will create a low frequency signal with a poor SNR. It may or may not be noticeable though with those frequencies, so I'm sure it's an overall improvement. Home theater guys do this for movies that have bass filtered out below 30Hz on the home release discs. They do this with a MiniDSP 2x4 processor.

I'd just get a kicker keyloc on the sub output and make it cheap and easy.

It's worth noting that from the crutchfield diagram the following speakers are all on their own channels from the factory amp.
- Front L tweeter
- Front R tweeter
- Front L mid
- Front R mid
- Center
- Rear L mid and tweeter
- Rear R mids and tweeter
- Sub

So there are a lot of channels to sum up if you want to upgrade the rest of the system... and you're still dealing with the EQ and time alignment "features" of the Bose amp.

It'll be nice if aftermarket companies could catch on and offer reasonably priced options for this. But my guess is that there is more than audio channels going through the MOST Bus. Tapping the Bus and extracting the audio while leaving the other features will be a decent sized task. Add to it that the real size of the aftermarket interest in these cars is slim, my guess is that there will never be an option.

 

[edouble]

Confirmed that the communication from the TAU to the amp is a MOST bus optical connection on the newer models.

From my research there is currently no way to tap this signal, as the communication is specific to the vehicle. There are other vehicles with this type of connection, which companies have made options to convert the signal to something usable (RCA or Toslink) through a $500-$1000 component.

So we're stuck with tapping into the high-level outputs from the amp, and using something like the Kicker Keyloc (or similar) to remove the equalization and get a clean signal.

What source did you get the information from, or testing have you done to confirm that the audio signal through the MOST signal?

 

[edouble]

The attached image was sent to me from PAC during a chat conversation with a PAC tech.

Based on this schematic, there is a 2-channel audio input going in the TAU and 4-channels coming out of the TAU and into the amp.

I will be purchasing an o-scope, and I will use it confirm this schematic. It will be probably 2-3 weeks until I can get this done. Unless someone wants to help fund my o-scope purchase, I take PayPal I will be analyzing the signals before TAU and after TAU.

I will test for:

1. Volume knob functionality on center console
2. Frequency bandwidth per channel (I only care about 2-channel) - should have at least 20-20k
3. Frequency level - should be flat 20-20k at all volume levels
4. Signal clipping - what volume setting does the signal clip at?

• I bought the PAC APH-GM02 - I will see if this will work for us (see attached)
• I am told that the green wire is ANC (see attached)