Re: I want to build an amp cabinet
I made sealed oversized 212 cab from 15mm mediapan, and it sounds great, a lot of volume, great punch in bass, nice middle and rounded treble, no ear-punching trebles. There are two Celestion Classic lead 80's inside. The only "negative" thing about this cab is - it's pretty heavy. But the sound from it is great! I have another 212 "regular" cab with sealed back (this one I bought, didn't built it myself), but there's two vent holes in front, between speakers, and it doesn't handle louder volumes as good as my cab. In this one are two Celestion G12T-75, and they tend to break up sooner than CL80's on clean channel (I've got Laney LC30 converted to head) of the amp.
If you want cab to have volume, increase depth of the cab. I've seen 212 cab of standard height and length, but of almost a twice od depth as a standard Marshall cab, and it sounds like 412 cab.