The
RoXdon
MP-1 PHASER is a clone of an excellent well known phaser designed and built
by Bob Moog in
the 1970's, now available as a studio rack mounted unit with line input
and output provided, to connect to a studio sound mixer. The unobtainable CA3094E chips have been replaced with three LM13700 chips
providing the 6 phase stages.
The RoXdon
MP-1 PHASER produces phasing effects by movement of an active filter and
consists of an input attenuator, input buffer and summing amplifier
section which conditions the input signal from the line signal source; a
six stage current controlled phase shifting chain which generates the
phasing effect; a low frequency triangle oscillator and exponential
current source which drives the phase shift chain; a power supply section
which powers the unit. The unit also features an output gain section for
signal matching.
Operating
controls consist of a BALLS control (Depth) which adjusts the phasing
effect, a SPEED control which adjusts the phasing rate
The RoXdon
MP-1 PHASER features a steel 2U 19" rack mounted enclosure
manufactured with vintage black hammered finish front and rear panels,
retro style knobs, dials, on/off switch and power-on lamp . The rear panel
has a 9 volt DC socket for connection of the external power adapter
(supplied) and 1/4" line input and output jack sockets for connection
to a sound mixer or line level source.
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