Question Roland XR-640 Felt Wiper


New Member
Hi All,

Anyone knows if you have to use 2 Felt Wipers and 2 wipers on Roland XR-640 ?
I've bought used XR-640, currently having 1 felt wiper and 1 wiper set up and 2 empty slots for additional felt wiper and wiper. Is it supposed to be this way or I should be running it on 2 felts wipers + 2 wipers?

thanks a lot,