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Blocking sound and absorbing sound are two very different animals. I think I would be correct in stating that you don't much care about the sound level within the enclosure, but what escapes it... Whilst absorbing sound makes the room/enclosure itself inherently 'dead', sound level is...

I for one would not change a single thing. Peter Morris has done more development work on these than most of us would do in a lifetime of speaker building. I feel that you would be opening a Pandora's Box in changing anything based on anyone's unresearched opinion.

Do you mean empty enclosures for domestic subs?

Oh, the times I have heard a man and his guitar at 'Deep Purple' sound levels... Less is often more, especially at weddings!

Slightly tongue-in-cheek, but it's far easier to run out of bass than to run out of mid/HF! It takes a lot of cone area and amplifier power to reproduce bass cleanly at volume in a large space or in open air. Move a Lot of Air - GENTLY!

Regardless of PA size, if one initially believes that 'X' number of subs are required (for anything larger than a pub-sized gig), 4X will be usually closer to reality! Amplifiers having twice the power rating of the subs is a wise move too... We've all probably heard PA systems run flat out...

I prefer the screw connection, but the 8-pole is still solder-only, dammit!

Yes - six amplifier channels required if the passive xover is not used.

Most large format compression drivers will play down to 1kHz. You do not need the lower frequency response capability (300Hz) of these coaxials as you already have this range covered by your midhorns.

Which particular aspects of them, and for what reason? Further, is there one area of traditional systems that is your main focus of interest/improvement?

Riley, I almost posted a very similar answer regarding this resistance seen by each series connected driver but bottled out at the last minute, as I remain unsure whether or not back EMF nullifies this problem. Your thoughts?

Connecting in parallel will not result in complete silence if one driver fails! 16 ohm drivers are fairly rare beasts so this might ultimately drive your decision.

It would be considerably simpler to employ electronic filtering before the amplifiers instead of using passive filters after them.

Another option would be to find a drummer who can play with subtlety, rather than putting the loud one in a Perspex prison! ;)

If the room itself is largely built of plexiglass then you won't need much of a door to match its sound reduction. Is this the case?

Having read the thread in its entirety, I would suggest that the best drivers for this design have already been selected, the only real choice remaining being between BMS or B&C coaxials.

Remember you don't have 8000 'real' Watts available from your amp, and it's likely to collapse on sustained LF tones such as dub reggae. Probably ok on most normal music but if you are keeping this amp I would consider four 18s, one on each channel which would probably be a little kinder on the...

Derick, you cannot achieve 4-way stereo filtering on the DCX2496; I use two separate units in six-channel mono mode fed digitally by a DEQ2496, but my system is 5-way so I had no choice within my budget. Alternatively you can use the passive crossover for the BMS to make it effectively a 3-way...