FX747 Supersonic Stereo Flange
Both cosmetic variants of the FX747 Supersonic Stereo Flange, from mid- (left) and late 1996
The FX747 Supersonic Stereo Flange was introduced at the Summer 1996 NAMM meeting. Although it was largely based on the FX75-B's circuit (with an analog MN3007 BBD chip, but modified for the new "final series" chassis design), the FX747 did not immediately replace the FX75-B in DOD's lineup. Two cosmetic versions of the FX747 exist, with or without the "real" control names on the top row just above its control knobs. The FX747 was "discontinued" in early 1998 with the release of the final-series FX75C, but the two pedals appear to be identical in all but name.
- Controls: Payload (Level), Mach (Speed), Altitude (Width), Thrust (Regen)
- From the manual: "The FX747 Supersonic Stereo Flanger [sic] is DOD's newest answer to an old argument: "To flange or not to flange?" The FX747 Speed or MACH control has an extended range allowing it to flanger slower than any other flanger made. This allows you to play "into" the effect, rather than "with" the effect. Give your guitar or bass a full on, jet-like sound, or just take a spacey trip to the ozone."
- Suggested retail price (1996): $119.95
- Technical info:
- Notable IC chips: one MN3007 analog BBD chip driven by a MN3101 clock generator/driver CMOS chip; four BA4558 dual op amps (one each apparently used as input and output buffers, one split between the Mach and Altitude controls, and one split between the Thrust and Payload controls)
- Internal trim pots: unlike the FX75-B, the FX747 has no internal trim pots
- Component-side circuitboard images: August 1996
November 1996 - Related circuit: FX75C (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 BA4558 dual op amps (one each apparently used as input and output buffers, one split between the Mach and Altitude controls, and one split between the Thrust and Payload controls)
- FX heritage: FX70 FX75 FX75-B FX747 FX75C
- External links:
- @ ftp.dod.com - instruction manual (1996), .pdf format
- @ discofreq's FX site
- @ harmony-central.com
- @ noiseguide.com
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