BGW 8000 - Page 20

0.5202-2
With the preamplifer or mixer gain controls fully off, advance the power amplifier
gain controls about half way dock-wise (slit in knob facing upwards). There ahould
be no
audible hum; if a hum is heard, check the connections between the power
amplifier and preamplifier. Now advance the preamplifier gain controls until the
desired maximum volume is achieved. Should the preamplifier gain control be in
excess of the 3/4 setting, decrease it to ha1:f volume and increase the gain controls
of the power amplifier to the desired level.
Often, tum-on transients originate in the pre-amp or mixer. This is especially true
of tube-type units. If this situation arises, tum the amplifier on after the other
units have had adequate time to stabilize.