FX75C Stereo Flanger
FX75C Stereo Flanger from late 1998, with original box
The FX75C Stereo Flanger was introduced at the Winter 1998 NAMM meeting. Like the FX747, the FX75C was largely based on the FX75-B's circuit (with an analog MN3007 BBD chip, but modified for the new "final series" chassis design). Although we have only opened up one FX75C, it appears that at least early versions of the FX75C had an identical circuit as the FX747. As DOD's only flanger, the FX75C was retained when production shifted to China with the VFX series.
- Controls: Level, Speed, Depth, Regen
- From the manual:: "The FX75C delays the input sound and then mixes the delayed and original sound together. The DELAY time control adjusts the amount of delay time in conjunction with: the WIDTH control which sets the range through which the delay time may vary, and the SPEED control which adjusts the rate at which delay time changes. The REGENeration control adjust the height of the comb filter peaks by controlling feedback through the delay circuitry. The REGENeration control allows the adjustment of the effect from very subtle to very pronounced."
- Suggested retail price (1998): $119.95
- Technical info:
- Notable IC chips: one MN3007 analog BBD chip driven by a MN3101 clock generator/driver CMOS chip; four 4558-type dual op amps (one each apparently used as input and output buffers, one split between the Speed and Depth controls, and one split between the Regen and Level controls)
- Internal trim pots: unlike the FX75-B, the FX75C has no internal trim pots
- Component-side circuitboard image: December 1998
- Related circuit: FX747 (early versions of the FX75C appear to have identical circuits), GFX75
- Notable IC chips: one MN3007 analog BBD chip driven by a MN3101 clock generator/driver CMOS chip; four 4558-type dual op amps (one each apparently used as input and output buffers, one split between the Speed and Depth controls, and one split between the Regen and Level controls)
- FX heritage: FX70
FX75 FX75-B FX747 FX75C - External links:
- @ ftp.dod.com - instruction manual (1998), .pdf format
- @ discofreq's FX site
- @ harmony-central.com
- @ noiseguide.com
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