Kef C4 circuit board modification

[Masaray]

I have a Kef C4 that I want to disable the auto on-off part of the circuit to make it always on when switched on by the rear panel switch.
This subwoofer will only kick in when the volume is loud which is ok if I live in a multi-plex cinema but living in shared accommodation it is not neighbourly to be blasting out my movie for everyone to hear. I still want the bass tones for things like gunshots explosions etc without the volume needing to be high to enable the subwoofer to kick in.
I do have a schematic pdf so just need to know what circuit board changes need to be made to achieve this if it can be achieved. Any help will be greatly appreciated

 

[Cbdb2]

Pin 6 (mode pin) mutes the output.
https://www.nxp.com/docs/en/data-sheet/TDA8920B.pdf
Disconecting R511 should do what you want. You can disconnect it at connector c2nb look at the Amp page of the manual. I think there will still be a turn on mute so no turn on pop but not sure.

 

[Masaray]

Thank you very much for your speedy reply and help. Please see attached image showing R511 which is SMD.
So do I just remove this from the board or should I bridge the gap removing it would leave behind?
Kind regards.

 

[Cbdb2]

The top right there's the connector cn2b, disconnect pin 4, remove the pin or cut the wire, the fourth from the top. Do what ever does the least damage so you can reconnect it if you have to.

 

[Cbdb2]

Any luck?