My name is Rick Wells, I am an electro-acoustic consultant living here in Morro Bay.
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I have personally tuned hundreds of sound systems in real world conditions. I use a two-channel transfer function FFT analyzer to measure the electro-acoustic characteristics of loudspeakers in time/energy. This method isolates the loudspeakers from random room reflections. My method provides a more accurate measurement in comparison to the old RTA method used my most amateurs. I account for the inescapable off axis loudspeaker characteristics, inherent to every loudspeaker system, by positioning four measurement microphones, on and off axis, near and far simultaneously measuring the loudspeakers’ frequency response. When your tuning is complete, your sound system will be flat within the specified frequency range, +/- 3db for music store grade speakers and +/- 1.5 dB for professional loudspeaker systems.
Depending on the speakers and EQ - 95% of the time I will be able to point a microphone directly at the loudspeakers and they will not feedback.
The interesting thing is: Since an FFT analyzer tunes the speakers and not the room, you can move the speakers from room to room and they do not need to be re-tuned. In my experience the only thing you might have to change is the low mid characteristics.
MMC provides tuning services to bands, venue owners, manufacturers, AV contractors and integrators.
Our rates are:
$150/HR site time + $75/HR travel time + travel expenses.
Loudspeaker tuning, crossover adjustment, subwoofer timing.
Cinema THX specification modified X-Curve tuning and configuring.
Complete ‘B-Chain’ (DSP to loudspeakers) configuration for more complicated systems.
Delay measurements for room combining and delay speakers.
Problem system tunings.
Universal Studios Jurassic World ride, Universal City, CA
Garland Theater Cal Poly High School, Pasadena, CA
Gloria Kaufman International School of Dance at the University of Southern California
Holy Trinity Catholic Church, Foothill Ranch, CA
All you need is:
1. Your sound man present when I tune the system.
2. A couple of hours.
4. Some type of equalizer.