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This change in the phase and amplitude relationship on the harmonic and fundamental frequencies is techni-
cally called “envelope distortion.” The listener perceives this loss of sound integrity in the reproduced sound as
“muddy” and “smeared.” In the extreme, it can become difcult to tell the difference between musical instru-
ments, for example, an oboe and a clarinet.
BBE Sound, Inc. conducted extensive studies of numerous speaker systems over a ten year period. With this
knowledge, it became possible to identify the characteristics of an ideal speaker and to distill the corrections
necessary to return the fundamental and harmonic frequency structures to their correct order. While there are
differences among various speaker designs in the magnitude of their correction, the overall pattern of correction
needed is remarkably consistent.
CLIP LED
This LED will light when output capability is being exceeded with clipping distortion. Occasional ickering of the
Clip LED is acceptable, but if it remains on continuously you should turn down the level control or reduce the
output level of the preceding component to avoid audible distortion.
RANGE X1 & X10
This switch sets the range of crossover frequencies.
OFF : Frequency x1 = 80Hz -1KHz
ON : Frequency x10 = 800Hz -10KHz
CAUTION: to prevent transients and possible equipment damage, never
change the frequency range switch from the x1 position to the x 10 (or vice
versa) while passing signal.
PHASE INVERSION
These phase inversion switches reverse the audio signal’s phase by 180˚ . Normally, you won’t need this switch,
however, in some cases, it might be necessary. For example, the inversion of the pins of the XLR connector may
be necessary to alter the audio phase to compensate for phase cancellation.
MODE SWITCH
This switch sets the operational mode of this unit. When it is pressed, this unit is in the state of mono applica-
tion, you can operate it as a 3-way mono crossover (High/Mid/Low). Otherwise, this unit is in the state of stereo
application, you can operate it as a 2-way stereo crossover (High/Low).
INTRODUCTION
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