Delta Manual

Crest HP-Eight (HP-8)

polarity (reverse)

This feature is used for correcting or minimizing polarity and phase related errors. For example, occasionally a balanced input connection is reverse-wired before it gets to the mixing console.This can happen in microphones, or in snake line interfaces. By using the polarity button, this type of error can be corrected.

Lo-Cut filter

This filter reduces or eliminates unwanted low frequencies without substantially affecting the program material. Quite often, such unwanted low frequencies are included with mic- or line-input signals. For example, stage rumble or wind can be picked up through vocal mics.The cut-off frequency of the filter is 72 Hz and the slope is -18dB per octave.This type of filter is also referred to as a Hi-pass filter (HPF). It allows the hi-frequencies to pass, but stops the lo-frequencies.

EQ features

Many audio signals coming into the console require some degree of corrective equalization in order to be part of a good sounding mix.

The input EQ consists of four-bands: high, high-mid, low-mid and low. The high and low bands have fixed frequencies while the high-mid and low-mid bands are sweepable, with their higher and lower frequencies overlapping adjacent bands.

aux send features

Ten aux sends are available for creating individual output mixes.These mixes can be used for driving effects processors, providing monitor mixes, creating broadcast or alternate sound reinforcement mixes, or other special requirements.With the corresponding PRE switches in the UP position, the Aux sends are fed from the Post-fader channel signal.

When the PRE switch is depressed, the corresponding Aux sends are fed from the Channel’s Post-EQ, Pre-fader signal. An internal option allows the user to change this “PRE” point to the Pre-Insert, Pre- EQ signal on a channel-by-channel basis.All Aux sends are affected by the channel Mute switch.

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