This is the Electro Voice 30W a 30" woofer, it has a styrofoam cone material which is light and rigid, one of the largest drivers ever made.
The Electro Voice Patrician, the largest cabinet that housed drivers such as the 30W, notice the three attenuators on the side in the picture to the right.  These were very large and made a very big sound, two of these could fill a large auditorium. We have plans for this encloser availible.
Above left is the TW-35 tweeter, part of EV's Wolverine line of drivers, this was a less expensive line than EV's flag ship line, that offered several small compromises at an affordable price.  Above right is the LT-12 triaxual driver, the wolverine lines equivalent to the 12trxb, it did not have the frequency extention or efficiency of the 12trxb, it also utilized the TW-35 for its tweeter and the MT12 for its woofer.  Below is the Aristocrat encloser, it had a horn loaded port that enhanced bass, in this encloser was SP12B's, T-35's , or 8HD midrange horns, and 12trxb's.  This was EV's most popular encloser for most of their drivers.
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