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5.2. CROSSOVER
With the help of the Crossover Adjustment Selector, shown above,
it is possible to set the lter cut-off points in a much more complete way,
customizing the audio output. The lters (HP and LP) should be adjusted
taking into account the frequency response of the loudspeakers used, as
many of them are sensitive to a very sharp deection of the membrane,
caused by using frequency ranges lower than those indicated.
High Pass Filter (HP): By setting the HP (High Pass Filter) crossover
adjustment selector to position X1, the high pass input lter setting can be
varied between the xed frequency values of 20Hz, 40Hz, 60Hz, 80Hz,
120Hz, 220Hz, 500Hz and 900Hz, determining the start of the frequency
range in which the amplier will operate. By changing the HP crossover
setting selector to position X10, the high-pass input lter setting can be
varied between the xed frequency values of 200Hz, 400Hz, 600Hz,
800Hz, 1.2KHz, 2.2KHz, 5KHz and 9KHz.
AP400 AND AP800 AUDIO AMPLIFIER - INSTRUCTION MANUAL
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