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Text excerpt from page 4 (click to view)
A DIRECT HIT ON FEEDBACK! The FBX-SOLO targets feedback without taking a big chunk out of your sound. Tests prove that a single 1/3-octave EQ slider pulled down 12 dB removes almost half the power going to the speakers over a two-octave range. And, as the illustration above shows, you can't place a graphic EQ filter precisely on the ringing frequency. When you pull down multiple sliders in a normal setup (below), you end up with giant holes in your sound. On the other hand, FBX constant "Q" micro-filters are 10 times narrower you get back up to 90% of the power you lose with a graphic EQ! That means more gain before feedback and no loss in sound quality.
FREQUENCY RESPONSE TEST: Full Set-Up FBX vs. 1/3-Octave Graphic Equalizer. Test procedure: A PA system was set up using a microphone, mixer, FBX, power amp and two speakers. The system's gain was raised until the FBX removed six feedback points. Next, the FBX was replaced with a 1/3-octave graphic EQ. The EQ was adjusted while the input was raised to the same level achieved with the FBX. The frequency response curves of each device were then plotted. What this means to you: Doubling the cost of your microphones, speakers and power amp probably would not improve your system's frequency response as much as replacing your EQ with an FBX for chasing feedback. 4
