Chapter 7: Editing Effects

EQ

The shelving EQ is only available in Configuration #s 4 and 5. It provides bass and treble boost, and effects the entire Main Output (not just the Effects Sends). Four EQ parameters are included: Low Frequency (range: 30Hz to 180Hz), Low Frequency Gain (0dB to +12dB), High Frequency (3kHz to 10kHz), High Frequency Boost (0dB to +9dB).

Lo EQ Frequency (30Hz to 180Hz)

Page 1

This allows you to adjust the cutoff frequency of the Lo EQ. It can be set between 30Hz and 180Hz. If the Lo EQ Gain parameter is set above 0dB, all frequencies below and including the one selected by the Lo EQ Frequency parameter will be affected.

Lo EQ Gain (0dB to +12dB)

Page 2

This controls how much boost will be applied to frequencies below and including the one selected by the Lo EQ Frequency. It can be set between 0dB and +12dB.

Hi EQ Frequency (3kHz to 10kHz)

Page 3

This allows you to adjust the cutoff frequency of the Hi EQ. It can be set between 3kHz and 10kHz. If the Hi EQ Gain parameter is set above 0dB, all frequencies above and including the one selected by the Hi EQ Frequency parameter will be affected.

Hi EQ Gain (0dB to +9dB)

Page 4

This controls how much boost will be applied to frequencies above and including the one selected by the Hi EQ Frequency. It can be set between 0dB and +9dB.

MOD

The Mod Function lets you control various effects parameters from the various controls on the QS (keyboard, after-touch, pitch-bender, etc.) or from the MIDI input. This is extremely useful when dynamic or real-time control is required in a live playing situation. It is possible to control up to 2 parameters simultaneously. The Modulation assignments are saved with the Effects Patch.

Don’t confuse this Mod Function with the Mod Function used by the Programs; they are independent destinations, though they can come from the same source.

Note: Modulating any effect parameter (with the exception of chorus speed) while audio is passing through it can result in audio artifacts or noises due to discontinuities in the modulation source.

SELECTING THE MODULATOR

The are two Modulators. You can select between these by using the [ PAGE] and [PAGE] buttons. Page 1 through 3 display the parameters of Modulator #1, while pages 4 through 6 display the parameters for Modulator #2.

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QS7/QS8 Reference Manual

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Alesis QS7, QS8 manual Mod, Lo EQ Frequency 30Hz to 180Hz, Lo EQ Gain 0dB to +12dB, Hi EQ Frequency 3kHz to 10kHz