Barefoot Sound MicroMain35 Gen2 Owner'S Manual Download Page 10

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MEME™ Voice Selector Connection:

The MEME™ Voice Selector switch box is
connected to the Voice jack of the speaker via any
standard 3.5 mm stereo phone cable.  The included
6-way splitter can be used to control the Voice
Emulation of up to 5 speakers.  Furthermore, the
input impedance of the Voice jack is very high.  So,
additional splitters can be daisy chained in order to
control virtually any number of speakers with the
MEME™ Voice Selector switch.

Caveat: Plugging the speaker into different mains
outlets can potentially cause erratic behavior in the
MEME™ control. The safety grounds of different
outlets can sometimes have ground potential
differences of a few volts of more.   The resulting
voltage spread between the grounded chassis of
various speakers can cause the MEME™ control
inputs to read incorrect settings or become
unstable.  Care must be taken with the studio
mains power and safety ground layout.    If this is a
concern, please consult a qualified electrician.

Example:

5 channel MEME™ Voice control layout.

Cabinet vibrations are a significant source of distortion and coloration in most loudspeakers. The primary
mechanism that generates cabinet vibrations is simple Newtonian action and reaction. As the driver motor

(magnet and voice coil) forces the cone to move back and forth in
order to generate sound, the cone exerts an equal and opposite
force on the motor.  This force is transmitted through the driver
frame to the cabinet, vibrating the cabinet walls and coloring the
sound emitted by the cone.  This effect is most especially prevalent
in the low frequency drivers where the cone motion is greatest.

While, the MicroMain35 Gen2 is built with a massive and well
braced cabinet, we also tackle the problem at its source by
eliminating vibrations before they even begin.   This is achieved
through our innovative force cancellation design.  The low
frequency drivers are mounted on opposing sides of the cabinet
and their motors are locked together.  As the cones are driven in
and out in opposite directions the forces exerted on the motors
cancel one another.  The vibrations never make it to the cabinet
because they are not allowed to develop in the first place.

This layout has further benefits.  Since the drivers are locked
together, the motors and frames function as a massive internal
metal cabinet bracing.   And because the wavelengths generated by
the subwoofers are much larger than the speaker cabinet
dimensions, the subs radiate as if they were a single point source
located on axis with the tweeter.