Hi Phil
The 1203-8 is a 12" speaker. The chassis is cast alloy however whereas the Roland speaker is (I think) pressed steel.
You might have to trim the baffle to make it fit. I have no knowledge of the Roland amp but JD John Davis) has just
replaced his Roland speakers with Telonics ones (which are similar in style to the Peavey) and he has indicated in a
post elsewhere on this forum that the mounting required a little modification. He could give you more advice.
Thanks
Les


