Moog MF-103 Specifications download pdf (Page 7)

Figure 5 – Frequency Response of a ‘basic’ 6-stage phaser. Figure 6 – Frequency Response of the AUX output.

AUX OUTPUT: Figure 6 shows the frequency response that you get when you start

with the basic setup, and then listen to the AUX Output rather than the Main

AUDIO Output. Note that the frequency response is the opposite of Figure 5.

That is, the peaks of Figure 6 are at the same frequencies as the dips of Figure

5, and vice versa. The sound is similar, except that there is distinctly less sound

energy at very low and very high frequencies. (We’ll say more about the Aux

Output when we talk about using both audio outputs together as a stereo pair.)

Figure 7 – Frequency response of a 12-stage phaser.

Figure 8 – Frequency response of a phaser with high

resonance

12-STAGE: Figure 7 shows the frequency response that you get when you start

with the basic setup and then switch the right-hand rocker switch to 12-stage.

The mid-shift frequency has not changed, but now there are six dips, and the

intervals between adjacent dips are half as wide. The quality is distinctly different

from 6-stage.

RESONANCE: Figure 8 shows the frequency response that you get when you start

with the basic setup and then turn the RESONANCE control up to 10. The

positions of the peaks and dips have not changed, but the peaks have

become higher and sharper. This gives the phaser a quality similar to an array of

highly resonant filters.

SWEEP: Figure 9 shows what happens when you start with the basic setup and

then turn the SWEEP control through its range. Technically speaking, the entire

frequency response moves back and forth horizontally. Musically, you hear the

classic phaser “whooshing” sound as different frequency bands of your

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Moog MF-103 Specifications Page 7