Thought that it's a good time to get the 4688's out of storage and let them play a little.
They are loaded with the original 2240H woofers and are being driven by a crown M600 ( industrial version ) so it's about 2000 watts into 2 ohms.
The signal is filtered with a JBL/UREI 5235 with 80hz/18db cards and there are NO boost or High pass filters involved.
When used with the 4355 ( mod ) clones the additional LF was noticeable on the very deep hip-hop / dance synthesized material but not so on standard rock.
BUT the volume of air displaced on billy idol's white wedding was enough to get noticed across the street and make breathing difficult.
Me thinks my college renters will be doing community service in a few weeks after this party is over.