Alesis ModFx Philtre

Submitted on March 23, 2004

Pictures

prototype faceplateprototype faceplate
prototype faceplateprototype faceplate

Controls

Type
The TYPE switch selects the kind of filter as shown by the LEDs next to the switch: Low-pass, high-pass, band-pass, band-stop (notch).
Regen
Regeneration: this increases gain at the filter corner for a sharper filter peak. In Band modes it also sets the width of the band.
Phreeq
Determines the frequency center or corner of the filter.
Steep
This increases the slope of the chosen filter curves.
Reset Mod
Retarts the modulation from the beginning of its cycle. Generates a trigger in TRIGGERED mode, or changes the pattern in PATTERN mode.
Tap Tempo
Active in TEMPO SYNC mode only. Tap a regular beat on this button, and the mod speed of the Philtre will be set at some multiple of that beat, as set by the RATE knobs.
Modulation
selects the type of wave used to modulate the filter frequency: Triangle, Sample/Hold, Triggered, Envelope, Pattern, Tempo Sync
Rate
knob affects the modulation speed, in cooperation with the TEMPO SYNC and TAP TEMPO buttons.
Depth
controls the depth/amplitude of the modulation (the size of the range in which the effect sweeps).

Information

the manual

Four different filter types, with steep slope switch and adjustable regeneration

Five different modulation sources, including Trigger and Envelope for note-by-note filter sweeping

Tempo synchronization keeps filter effect in time with the music

Tap Tempo makes it easy to set the speed of modulation by tapping a beat on the top panel

Uniform, friendly, uncomplicated user interface-no fiddling with complicated menus or "hidden" knobs

Reset Mod lets you reset the phase of any modulation shape from its beginning

Stereo processing via four 1/4" unbalanced connectors

ModLink port, a cable-free connection that transfers digital audio and word clock to other boxes in the ModFX family

Footswitch connection to control the bypass function

Ability to mount 3 ModFX boxes in the optional ModFX rack adapter

Input trim control to adjust input level

Internal 28-bit digital processing

24-bit D/A and A/D conversion at 48kHz sampling rate for quiet, distortion-free effects

External 9VAC power supply included

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