I run 2 mesa 1x15s (TL606 cab) recently loaded w/enimence kappalite 3015s (+a Mesa M2000) - incredible.
I have 2 old marshall JCM 800 bass series cabs. A 2x15 & 2x10,1x15. These are typical 4x12 dimentions but +/- 4" deeper.
I am wondering about loading the kapplites into the marshall 2x15.
It's interior volume is approx 6.5' which falls around the internal volume of 2 TL606 cabs.
My question is about the porting and how the differently built ports effect the cab's performance.
The port in the marshall is 5.75 in diameter.
I had a mesa 2x15 box and do remember 2 round 4" ports. How do different sized surface ports effect performance? 2nd question
: the 2x10, 1x15 marshall cabinet, same dimentions, it has 2 inputs for bi-amping or 1 for full range.
I have a mesa 2x10 with the same type of porting as the TL606.
I was wondering about loading a kappalite 15 + the 2-10 ev(s)from the mesas into the 2x10, 1x15 marshall. The port appears a bit larger maybe 7".
In a full range cab where speakers share the same air space and ports, does one speakers usage of the space effect the other?
I have a Marshall DBS 7400 I want to run with 1 - 4 ohm Marshall cabinet. I'm also wondering which cab would perform better. opinions?
bonus question: back in the early 80's did marshall just build these cabs the same as the guitar 4x12's for looks - and hope for the best by deepening them and adding a port? or did they actually calculate the enclosure size and performance?