Oh dear..I screwed up my top plate..first time I was drilling such a big hole in aluminium and I messed it up pretty bad. I was using a hole saw and it all went awry.
I used a wood boring bit to make the center hole after the mess with the hole saw.
This is what happened.
If anyone has a spare tube ring (from the tube ring protectors) please PM me. I could definitely use it to cover up my stupid mistake. Never mind already placed order for a set on ebay
I tried driling the main hole with a hole saw and failed completely. Instead I plan to drill ou tthe hole using some other drill bit and put a tube ring around it to cover up the mess.
The CTH stands for the amp and of course CA stands for Cavalli Audio. Ghetto I know..but the best I could do with a hand drill.