Anderson plug would work
maybe a 4 way small for speakers
2 way bigger one for sub
https://www.jaycar.co.nz/4-way-shell-for-15a-anderson-connector-with-latch/p/PT4436
(Can’t actually see what this one plugs into unless it’s both M&F)
https://www.jaycar.co.nz/anderson-sb50-power-connector-50a-6-gauge-contacts/p/PT4420
They have panel mounts for them too