DOD SR823 Посібник користувача - Сторінка 6

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SR Crossover

• 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 -12, 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.

SR834: Apply power to the mid frequency amplifier and turn up the MID level

control to the desired level.

SR834/SR823: 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.

SWITCHES ARE MECHANICAL SWITCHES AND SHOULD ONLY BE CHANGED

WHEN THE POWER AMPLIFIER FOR THAT OUTPUT IS OFF. Turning down the

level controls 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, and drivers.

STEREO OPERATION USING A MONO SUBWOOFER

This mode of operation provides:

SR834: Channel 1 and Channel 2 high frequency outputs, Channel 1 and

Channel 2 mid frequency outputs, and one summed low frequency

output.

SR823: Channels 1 and 2 high frequency outputs and one summed low

frequency output.

The setup procedure is the same as for the stereo mode, except that, instead

of connecting both low frequency outputs, connect only the Low Frequency

Sum output to the low frequency amplifier. Set both LOW level controls to the

same level to ensure that both controls contribute the same amount of signal

to the Low Frequency Sum output.

Note: There is no phase inversion switch on the SR834 for the Low

Frequency Sum output. Any phase problems must be corrected using the

phase inversion switches on the other four outputs.

THE PHASE INVERSION