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TM
Instruction manual
“Copyright 2015, Phoenix Professional Audio GmbH, www.phoenix-pa.com“
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37.
ROOM EQUALIZATION (BASICS)
Equalization for feedback suppression
The positive feedback between microphone and speaker produces the so-called feedback which always starts with the frequency
at which the transmission curve shows the strongest maximum. This can be attenuated with the automatic feedback limiter
which is integrated in the MIXER like follows:
At first you should reduce the parasitic frequency with the parametric EQ for a favoured value (dB) narrowband (OCT.). Then
produce a feedback by raising the microphone sensitivity. Measure the occuring frequency and correct it with the parametric EQ.
The green curve shows the recommended reproduction curve for speech amplification systems.
The automatic mixing amplifier
PV-DSP-1AD.9.2
(
POWER VOICE
) serie has 15 parametric input EQ.
Thereby even acoustically difficult rooms can be equalized very well and the microphone sensitivity can be raised without
parasitic feedback.
Power amplifier
Pre-amplifier
Speaker
Microphone
Summary of Contents for PowerVoice PV-DSP-1AD.9.2
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