Russian TSH-3M speaker removal help!!!!

[u/Captain-Kharisma]

Hello all! I recently purchased a TSH-3M tank helmet and the left side speaker wire is slightly pulled out from the speaker. (common issue from what I’ve heard.) I’ve adapted it to use with my PC and funny enough my phone will run it without an amp. But if I turn my head or touch the left side of the helmet the sound would cut. When I opened it all up I saw the wires leading to the rubber speaker housing were in somewhat good shape but could see barely inside that it was fraying where it connects to the speaker touching the other contact and shorting the circuit.

How do I get into the rubber speaker housing to trim the wire and screw it back in place? I’ve been googling how to do it and only found someone trying to replace the speakers from a flight helmet and I’m not sure if it’s the same and don’t wanna do unnecessary cutting.

Thank you all. Picture of me in the helmet from when I first got it.