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FEATURE/DESCRIPTION
A. The High Pass Filter
This filter is screwdriver adjustable with a continuously variable range from
300Hz to 1.7Hz. In the fully counter-clockwise position, the stereo main amplifier
is rolled off at 300Hz. This filter may only be activated when switch "B" is moved
in the direction of the filter or "TRI" position. When this filter is operational the
120-watt stereo amp becomes essentially a band pass amplifier. A low level
signal from phono plug set "H" provides output above the selected crossover
point of the high pass filter so that a second amplifier may be added to complete
the tri-amplified sound system.
B. The Operational Mode Activating Switch
The switch determines whether the 2121
will operate as a bi-amplifier or a
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modular tri-amp. Move this switch with a small screwdriver in the direction of the
filter you wish to activate. To the right, or "Bi" position, only the low pass filter (C)
is functional. To the left, both filters become operational.
C. The Low Pass Filter
Screw driver adjustable with a continuously variable range between 45 to 200
Hz. Fully counter-clockwise is 45Hz. With the 2121
operating in the bi-amp
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mode, low-level output is provided from plug set 'H' above the selected crossover
point of the low pass filter to beyond 20KHz. This feature allows any smaller
Linear Power™ amplifier to power 'front fill' drivers in the automobile. With this
© 2008 Linear Power, Inc. - ALL RIGHTS RESERVED
3
.
LINEAR POWER™ is a trademark of Linear Power, Inc
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