[Mike02z]

Who’s added a sub/amp to the HK (688) system? I want to get a powered sub. IMO the 8” shallow mount enclosure just won’t provide the punch I want. I tried the Bavsound subs in my previous M40i but was not impressed. Looking at the Focal’s but still think a 12” sub is needed for really deep bass.

I found the below to tap into the factory wiring on the F97/F98 but was wondering if anyone has tried it?

https://technicpnp.com/product-categ...88-x3-g01-f97/

I was also thinking about getting one of these subs that sits within the center of the spare tire.

https://www.amazon.com/dp/B07FY9BPVR...KRFCSXKV0810TQ

[spta97]

I did :

https://x3.xbimmers.com/forums/showthread.php?t=1738593

[Mike02z]

Originally Posted by spta97

I did :

https://x3.xbimmers.com/forums/showthread.php?t=1738593

Outstanding.Thanks so much!

[spta97]

Originally Posted by Mike02z

Outstanding.Thanks so much!

It's been a while but let me know if you have any questions.

Also, if you have an LCI wiring may be different.

[Must_Go_FASTER]

Originally Posted by Mike02z

Who’s added a sub/amp to the HK (688) system? I want to get a powered sub. IMO the 8” shallow mount enclosure just won’t provide the punch I want. I tried the Bavsound subs in my previous M40i but was not impressed. Looking at the Focal’s but still think a 12” sub is needed for really deep bass.

I found the below to tap into the factory wiring on the F97/F98 but was wondering if anyone has tried it?

https://technicpnp.com/product-categ...88-x3-g01-f97/

I was also thinking about getting one of these subs that sits within the center of the spare tire.

https://www.amazon.com/dp/B07FY9BPVR...KRFCSXKV0810TQ

Here's mine, I'm very happy with it and would highly recommend the TechnicPnP harness. I used spta97's write-up as a guide, and his is much more of a professional install than mine

https://x3.xbimmers.com/forums/showthread.php?t=1896294

Edit: Hadn't seen that spare tire type powered sub before... pretty cool. There are a few write-ups on the forums of people finding enclosures that fit in the spare. A powered combo like this (or mine) makes installation a lot smoother and adding the harness is sooo easy to install.

[jmh]

Hello,

I recently upgraded my stereo to improve on the factory tin sound ...
The installation included the removal of the factory amp and integrating the new amps/DSP via a NAV-TV unit back into the factory system. All factory functions are retained (NAV, Phone, sounds/alarms etc)
Using the Bluetooth streaming adapter allows now for direct streaming into the system without going through the factory unit , this improves the sound event further. Especially if you are using a high(er) end streaming service like Tidal
As I am always a fan of clean installs and retaining an OEM look going with the passenger footwell installed sub worked out great. It does not take up much space and delivers amazing results


The following components have been used for the upgrade

• Factory integration via NAV-TVs Zen-25 unit

• Speakers : Quartorigo
  • Tweeter Tempo 10
    Midrange/bass : Tempo 40
    Subwoofer : Illusion Audio Carbon C10

• Amps & DSP
  • Mosconi Pico 8in10 (Front stage/rear)
    Mosconi Pico 1 (subwoofer)
    Mosconi Bluetooth stream adapter
    https://mosconi-america.com/portfolio/mos-bts-ld4c/

A few pics from the installation itself

Subwoofer installed in the passenger footwell



Amps and DSP installed in the trunk , left hand side compartment (also included removal of the factory amp)

[thestimp]

I also added an amp/sub kit, did the Alpine Type R 12" with mated 600wattrms Amp. Such a game changer for the car, although now I want to add an 8" for more mids.