I have a pair of 19s which my son has become quite attached to so I'm toying with the idea of building new enclosures. Drivers and horns are not common in this part of the world (Australia) but they appear every now and then.
This will be my first speaker project in about 30 years, materials and techniques have changed raising a few questions.
Reading the forum I gather MDF is preferred over ply or particle board. Not a fan of MDF for DIY home projects but if it's superior in this application I'll go with it.
My approach would be simple mitred corners using PVA wood glue but fully cleat (batten) all joints using an epoxy glue and a few screws. Had a few problems removing leaked epoxy glue from veener in the past, that's the reason for PVA on the visible parts, easy to get off.
I have the Altec drawings and have been planning cuts to the pre veneered sheets. It does appear there is an element of economy in the design, 48 inch (1220mm) wide sheets can be cut with very little waste. Sheets here are metric sized, 1200mm wide and I end up wasting heaps of board because the panels just won't fit into the slightly smaller width board.
If I make the cabinet dimensions 1.6% smaller I can do it economically, but the volume is then 4% less, would you?
Crossovers will be built using air wound chokes and decent caps, just have to source the big 8 and 35 ohm pots. Anything to be gained by going to 800Hz xover? Does the 802/511 combination work down to 800?
Any suggestions for improvements, thicker material perhaps, flush mount woofer, damping for horns?
All input appreciated, Ken