Hi All – I’ve started refinishing some 4320 cabinets that I’m going to repaint and re-veneer in my quest to upgrade it to a 4333. I’ve got all the drivers (2231, LE85+H91, 077) and one 3133 crossover in the mail (still need a second if you have one you’d part with).

My question specifically is around porting. The 4320 has (2) 4” ports with 7 Ό” tubes while the 4333 is spec’d to have a single 4” port with 4” long tube. It seems like I should remove one of the tubes and block that port and then shorten the other tube (presumably by removing, sawing and then reinstalling). Any tips for removing and reinstalling the port tubes?

Does this plan sound right to you folks? Both 4320 and 4333 have the same cabinet dimensions and volume (5.5 ft3). I know lots of people on this forum have done the conversion before but I haven't been able to find any information specifically on port mods.

Thx, David