I have been thinking over the last few days about how a single 21" maesltrom slot ported or with PR's would compare to both my FI Q18 subs for output and SQ. Would I gain alot more output. I could afford to sell both my drivers to get one of the 21"'s.
Here's a pic to show them...
Can someone advise me on what is the best way to cut out accurate holes for the FI Q18's. I can't find anything to do this. Tips and tricks would be appreciated please.
Any videos would be very helpful if possible.