Crate DXJFC User Manual

To obtain optimum performance from your Footcontroller, please read this guide before its use.

Specifications:

Communication

MIDI, Midi channel 0 (default)

Selector Switches

Indicator LEDs for preset display

and tap tempo

Expression Pedal

Passive volume control type,

50k – 1M ohm impedance

Power Requirements

Supplied via MIDI cable when used

with Crate DX amplifiers

Dimensions

2.25"H x 15"W x 4"D

• Specifications and information subject to change without notice •

www.crateamps.com

1400 Ferguson Avenue • St. Louis, MO 63133

Additional Technical Information:

The DXJFC communicates to the DX amplifier via MIDI (Musical Instrument

Digital Interface). Communication is on MIDI channel 0 by default, since the DX

amplifier operates in "omni/poly" mode.

Presets are changed by standard MIDI program change messages. The MIDI

message value can range from 0 to 9.

The Tap function defaults to MIDI controller #80. Value decimal 127 (hex 7F)

is sent when the tap is pressed, zero is sent when it is released.

The expression pedal defaults to controller #11 using single byte controller val-

ues. Pedal assignments are communicated to the DX amplifier via a MIDI "sys-

tem exclusive" (aka sysex) message. The following chart shows the sysex mes-

sage format (in hexidecimal) after the System Exclusive status byte.

00, 01, 28 SLME sysex ID code

SLME packet type

packet number (zero)

DXJFC product ID

00, kk knob ID (2 bytes) "kk" = knob ID

00, 01 action ID (2 bytes)

checksum "cc" = calculated checksum

end of sysex

Page 1 Specifications: Additional Technical Information: Communication MIDI, Midi channel 0 (default) The DXJFC communicates to the DX amplifier via MIDI (Musical Instrument Digital Interface). Communication is on MIDI channel 0 by default, since the DX Presets amplifier operates in “omni/poly” mode.
Page 2 3 3 ) ) M M I I D D I I O O u u t t j j a a c c k k : : Use this jack to connect the DXJFC A A : : T o select a preset, step on the numbered button to your DX amplifier using a standard MIDI 5-wire inter- which corresponds to the desired preset.
Page 3 “STANDARD MIDI” position.) SELECTING A PRESET: The DXJFC lets you access the 10 presets in groups (or “banks”) of five – 1-5 (bank A) and 6-10 (bank B). To access bank B, step on the “4/9” and “5/10” buttons simultaneously. The Bank B indicator LED illuminates, and the buttons will access the second number (for example, the “2/7”.
Page 4 This tells the DXJFC what kind of pedal you are using. If you forget to cali- brate the pedal, the DXJFC will do it for you the first time you use the pedal through its full range. The pedal’s effect on the DX amplifier control knob may change after calibration.

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