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Field Use and Testing:a continuing enlightenment.
System used: 3 MPT-48
array modules per side on 5' scafholding.

This was a Tim Sundog Corcoran Event featuring Vince Welnick of *The Grateful Dead*.

The Sundog Summer Shakedown took place at Hoppe Homestead Campground; East Troy, Wisconsin. This system covered 14 acres of beautiful landscape; with ease.

This system far exceeds engineers' expectations and will surprise an audience with sound that is simply unheard of.


System used: 3 MPT-48 array
modules per side. One of
which was used strictly to add
extra bottom end.

This was a three night Labor Day event held by The Rock Island Brewing Company in the District's plaza downtown Rock Island Illinois

122 dB at the mix location was obtainable upon request with coherence readings on the mark from 28Hz to 20Khz. The FOH engineers throughout the weekend were mesmerized. We love people who can appreciate esoteric sound quality!


 
System used: 4 MPT-48
array modules per side with only the tops running full range.

This event was Gumbo-Ya-Ya in Rock Island Illinois.  The air was filled with Cajun music for miles.  We had fun!  A person could feel the bass and clearly understand the harmonica player even when he talked through his harmonica amp; two blocks back.


System used: 4 MPT-48
array modules per side with only the tops running full range, plus four more for a center sub cluster.

This was for an MJG & 8-Ball and Juvenile concert.  The three dB down point on the system was 23.7Hz.

With aid of the MPT's extremely precise directivity control and inherent vocal clarity we had no troubles making vocals clear in this 65,000 sq. ft. expedition center.

In the center of the room the audience experienced bass so intense that we'd rather not publish the SPL level.  We will say that the mix location (102 ft. from the speaker stack) experienced 108 dB A-weighted.

Jazz stage for the Quad CitiesMarathon. Rexroat Sound's home town is Moline IL 
which is one of the four Quad Cities.

This was a really fun event! One of the first chances to test what only four MPT-48 modules can do outside.

System used: 2 MPT-48
array modules per side.

This was definitely a "smooth" jazz party. We had a lot of random comments of how pleasant this system sounded and we had her pretty cranked at times. No one complained of it being too loud.

 
System used:
6 MPT-48 array modules per side.
An array like this of MPT-48's takes very little equalization and a measly 16,000 watts of power.

We sure could have used a few degrees of splay between the upper and lower rows, but our flying hardware hadn't been completed.  So, we made due. With comments ranging from "where are your subs", to "no, we don't need to plug in my optimization software, this system sounds pretty good" we were happy.  After the Starship engineer told us that the system was a "pleasure" to mix on we knew that we're on to something.


 
Multi media arts event at University of Iowa's IMU building 2nd floor Ballroom.

This was a rave/dance in a very  nice ballroom, and they had Richie Hawtin in to do a four hour set.

System used: 3 MPT-48 
array modules per side.

The system was just what this somewhat reverberant room needed. The tight directional pattern of the MPT-48 allowed for us to skim the array down the 120' wall.  With 25' ceilings and no subs we were happy with 126dB @ 28 Hertz virtually anywhere in the room.

 
This was some initial testing of one array of four MPT-48's outside in the country.  We had abuddy's wife on the phone over two miles away, across a cornfield, and through a mile
of woods.  We could hear our voices back through the phone about 10 seconds later, clearly.
Please check back for new pictures of our systems.
©2000 Scott Rexroat