1 4
•
834: Set the LOW/MID crossover frequency for each channel according
to the front panel markings.
835: Set the LOW/HIGH crossover frequency for each channel accord-
ing to the front panel markings.
•
834: If the desired frequency is above 500 Hz, the Range switch must
be engaged (LED indicator lit). If the desired frequency is below
500 Hz, the Range switch must be disengaged (LED indicator off).
When the range switch is engaged, the frequencies marked around the
LOW/MID (LOW/HIGH for 835) frequency control are multiplied by ten. In
other words, if the LOW/MID (LOW/HIGH for 835) frequency is set at 250 and
the range switch is engaged, the actual crossover frequency is 2.5 kHz.
•
834: Set the MID/HIGH crossover frequency. The Channel 1 MID/HIGH
frequency control has two sets of markings. When using the
crossover in stereo mode, use the lower frequency markings to set
the MID/HIGH crossover point. This frequency control has no
range switch, and in stereo mode extends to 7.5 kHz.
835: Set the LOW/HIGH crossover frequency. This frequency can be
varied from 100 Hz to 10 kHz.
• Connect the outputs of the crossover to the appropriate amplifiers. THE
POWER AMPLIFIERS SHOULD STILL BE UNPOWERED. Check to see that
all crossover level controls are set to -
∞
, and that both gain controls are set
to 0 dB. Apply power to the low frequency amplifier.
• Send a broadband signal into the crossover and slowly bring up the LOW
level control. Set the control for the desired level. The gain control can be
used to boost the signal if needed.
834: Apply power to the mid frequency amplifier and turn up the MID
level control to the desired level.
834/835: Finally, apply power to the high frequency power amplifier
and bring up the HIGH level control to the desired level.
Once the output levels are set, any phase problems can be corrected with the
phase inversion switches on the rear panel (834 only). THE PHASE INVER-
SION SWITCHES ON THE 834 ARE MECHANICAL SWITCHES AND SHOULD
ONLY BE CHANGED WHEN THE POWER AMPLIFIER FOR THAT OUTPUT IS
OFF. Turning down the level controls on the 834 will not prevent transients
from appearing at the outputs when changing the phase switches while the
crossover is on. These transients can damage power amplifiers, speakers,
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