Originally Posted by ChopShop1
Originally Posted by Erich H
The pallet hasn't arrived yet, so I don't know how much they weigh.
Chop, My main goal with a design is to use two 12" woofers under a single SEOS-24. Your design sounds interesting. Hopefully you can also get the passive crossover figured out as well. I'm not sure I understand the reason for four 15's, but should be neat to see a crazy man at work.
I think your plan is a great one. It will be replicable, and probably have more output and finese than 90% of people will ever want.
Mark is the one who convinced me to go with four again, and in a sealed alignment, for the ability to extend really low with high output. I REALLY, REALLY enjoyed the CAt12s running full range with no subs. Basically, he suggested that four 15s could provide that and then some...room dependant of course, as I will be trying to fill a big space. I think they will prove very usefull for BluRay concert party nights. Plus, 4 15s in the mains was just interesting enough to get Mark to want to be involved
Hi Chop', it was great to finally meet the man behind much of the madness here!
Thank you again for the compliments on the Catalyst 12Cs. I do think it's important to remember that while many seem to imply that Gorilla's room is huge, it's really a fairly small space (slightly longer than some) with an open back. I believe the room is only about 14' wide with 8' ceilings. Your planned room is much larger and very tall in the front of the room.
I'm sure that once we lock down (for the most part, as I'm sure there will be tinkering) the active xover details, we can translate to passives for the masses. I don't know that the passives will offer the same last bit of performance, I'm sure they won't, but should get someone wanting to replicate the build fairly close with passives.
While target responses and crossover frequencies can most certainly be targeted from the active design, direct translation to passive can be tricky, as some things we do in active crossovers simply can't be done passively, or at least not practically. I know I cannot achieve the integration I get in the 12C's in a passive network. I might be able to get the on-axis response to be very similar, but not the same. While some don't put much priority on it, the 12C also has a top to bottom phase response which fits entirely within a 360 deg window, which is better than many 2 way designs.
All of the work on the horn and probably the low pass response of the woofers can be applied to other systems, where anyone investing this much in parts would want to then do separate EQ for integration into their room, but I've always found the best results to come from a smooth response and integration separate from the room either in open space or in a large baffle. This should certainly be a fun setup!