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Setting the Subwoofer gain
Disconnect the speakers from the power amplifiers.
Connect the MF/HF power amplifier to the Subwoofer output of the unit.
Set the output level of the oscillator to zero and connect it to the appropriate test input socket.
Set the oscillator frequency to 25Hz.
Set Bank 1 Switch 1 to ON.
Set Bank 4 Switch 2 to ON.
Set Bank 2 Switches 2 & 3 to OFF.
Connect the AC voltmeter to the output terminals of the MF/HF amplifier.
Raise the output level of the oscillator until the meter reads 2 volts.
Substitute the LF power amplifier for the MF/HF power amplifier. Do not alter the output setting of
the oscillator.
Set Bank 4 Switch 2 to OFF.
Adjust the Subwoofer output gain control (C14) until the meter again reads 2 volts.
Configure the dipole lobe for a CT8 DS
Set Bank 3 Switch 3 as required by figure 21 according to the position of the CT8 DS in the system.
Set Bank 3 Switch 2 as desired according to preference and Bank 3 Switch 3 as required by
figure 21.
20
Figure font: Helv 45, 7pt
Figure spacing: 7 x 7 mm
Figure 20
Figure 21
T1 T2 T3
C1 C2
C3
C4 C5 C6
C7 C8 C9
C10 C11
C13
C12
C14
S1 S4S2
S3
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