POWERMATE3
5 - LO CUT 80 HZ
When the LO CUT switch is engaged, frequencies below 80 Hz are attenuated (18 dB octave slope). In most cases using the LO CUT filter with microphone channels is a good advice, since it efficiently suppresses popping sounds, rumbling noise and low-frequency feedback. The only exceptions are kick drum and acoustic bass. Sometimes it can be also very effective to combine the LO CUT filter with the voicing filter. For instance to provide vocals with more “body”, without getting additional low pitched noise. Activating the LO CUT and raising the bass level (LO EQ) provides you with a richer sound, without additional rumbling or popping noise. Another welcome side effect is, that the power amplifier and the connected loudspeakers do not get “polluted” with unnecessary low-pitched inter- ference. Your audience will be thankful for the use of the LO CUT filter, too, since in this way they can enjoy a truly clear, natural, and powerful sound performance.
Illustration 2-5: LO CUT filter
6 - VOICE FILTER
This button activates an asymmetric microphone filter, which can be used in addition to the channel EQ. The voicing filter enhances the first harmonic oscillation and the treble of the human voice while slightly attenuating the mid frequency range. This voice shaping method provides powerful vocals that are clearly emphasized from the rest of the mix. This “pre-shaping” is not achievable using ordinary third or octave band equalizers. The use of this filter is not restricted to vocals only. Horns, wood- winds, and other acoustic instruments can profit from the voicing filter as well. We leave it entirely up to your creativity and imagination to try the VOICE filter with as many different sound sources, as you want. Normally, you do not have to fear any problems with the occurrence of feedback.
Illustration 2-6: Voice filter
