Akai MFC42 Operator's Manual download pdf (Page 16)

Chapter 2 Basic Operation

[Pole]

Determines the shape of cut-off curve. The larger

the number, the sharper the curve. The sound

character is different with different curves.

(1 pole = -6dB/Octave)

Note: Up to 8-pole is available on Mono channel.

Filter operation

Let’s master the operation of MFC42, confirming how the sound changes when the signal goes through

the filter, in the actual application.

The following is based on the connection of rhythm machine (stereo connection), but the operation of the

MFC42 is the same with other devices.

(Connection to rhythm machine)

Connect the stereo output of the rhythm machine to the STEREO IN connectors of the MFC42. Connect

the OUTPUT L/R to your sound monitor system (or connect your headphones to the headphone jack,

instead).

While the MAIN VOLUME is turned down, turn on the rhythm machine, the MFC42 and then your monitor

system in that order.

(Level adjust)

Adjust the level of MFC42 while playing

the rhythm machine. Turn the INPUT and

LEVEL knobs on Stereo channel fully

clockwise. Next, turn the MAIN VOLUME

(or PHONES LEVEL for headphone) up

to the appropriate level.

(Panel settings)

Turn the RESONANCE fully counter-

clockwise and the CUTOFF knob to 2

O’clock position, and set the FILTER

TYPE switches to LOW PASS (both switches down) position.

Now, we’re all set to experiment.

(Auto-tuning)

As the characteristic of analog circuitry, the heat makes the filter cut-off operation unstable. With the

built-in Auto-tuning function, it self-adjusts the internal filter circuit optimal.

• Press the MIDI CH. and CC NUMBER keys simultaneously to start it (bars on LED flash while auto-

tuning). Perform this auto-tuning when the unit is warmed up.

RESONANCE knob fully counter-clockwised position

Low

Frequency

High

Level

Cutoff frequency

As the knob is turned up . . .

Low

Frequency

High

Level

2POLE (-12dB/oct)

4POLE (-24dB/oct)

8POLE (-48dB/oct)

(-3dB)

Cutoff frequency

Frequency

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 32 33

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Akai MFC42 Operator's Manual Page 16

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