Subwoofer retrofit

[Vlad825]

Hi guys. There’s a lot of stuff here and in internet about adding a subwoofer to the HP (high performance)
sound system. But, i have V60 2022 and have some issues. 
1. On all photos and pinpoint drawings what i found 
amplifier has a 2 cable harness, but seems like on 
new cars Volvo has changed amp and i have 
Amp with one harness and one green plug. I didn’t 
find any information about pins on it.
2. By unplugging cables one by one i figured out what is going on
where and have empty 4 pins on a plug (1/2 and 5/6).
Would be logically that one of them goes to sub and one
to the dash center speaker but I’m not getting anything on both of them 
Of course option 210 - changed to subwoofer

[IMAY2023]

The wiring diagrams for GEN2 
https://forums.spaycetech.com/attachment.php?aid=238

The subwoofer is connected to  C15 and C7. 
The center dash is C10 and C2

[Vlad825]

Thanks a lot for  the file. Thats mean in a new amp subwoofer connected in parallel with right rear door 
and this is disappointing. There’s no sense to activate it in orbit and get an extra fader 
in system which will not control anything…

[IMAY2023]

Which page are you looking at? 
The trunk SUBWoofer output has its own channel on all AUDs,  not in parallel to any other loudspeaker.

[Vlad825]

Page 135. Maybe i reading something wrong,
But on my amp on a c7 c15 there’s a rear right door 
speaker.

[x119]

There’s no sense to activate it in orbit and get an extra fader 
in system which will not control anything…

It does add low down bass even without the sub fitted. Try it..

[Vlad825]

There’s no sense to activate it in orbit and get an extra fader 
in system which will not control anything…

It does add low down bass even without the sub fitted. Try it..

Exactly, and this is even worse, because it pushes 
a frequencies to the speakers that they should not 
play. This is giving real mess in a system. So sad 
that volvo downgraded system that much…

[Kenn]

Page 135. Maybe i reading something wrong,
But on my amp on a c7 c15 there’s a rear right door 
speaker.

Did you figure it out? I can't seem to get signal on pin 5/6 (14/6 som side). Changed to 02 with sub and running high performance (02) on 028.

[Kenn]

Thanks a lot for  the file. Thats mean in a new amp subwoofer connected in parallel with right rear door 
and this is disappointing. There’s no sense to activate it in orbit and get an extra fader 
in system which will not control anything…

I think the point on activating sub (210= 02) is that sensus reprograms  c7/c15 to a subwoofer channel. This will result in the rear door woofer playing lower frequency for the sub to play it's correct register 

However it doesn't work on my 2021 v60 with retrofitted hk subwoofer. It plays -yes, but it's not doing the subwoofer stuff, more like any other speaker. I also confirm this by noticing that the "subwoofer" sound setting in Sensus does not affect the sub. Nothing happens with the bass moving it from Max to min.

I wonder if I have to change 460=undefined 466=undefined or 028=02 high performance 

Some clarity would be great?

[thermal-fixity]

Have you figured this out?