TOA NEW 900 SERIES
Operation
When all connections are completed, turn power switch on.
Then, the meter is illuminated. Approx. 5 seconds after switching
power on, the amplifier comes into operation.
ADJUSTMENT OF VOLUME
Adjust the individual input and master volume controls to obtain
appropriate output level. In normal use of BGM playing or an-
nouncement, the deflection of the meter is recommended to be
within the range as indicated in the drawing. Tone quality will be
considerably deteriorated if the pointer indicates around 0 VU.
ADJUSTMENT OF TONE QUALITY
When adjusting tone quality, place the TONE SWITCH in "IN"
position, thus activating the BASS and TREBLE CONTROLS. Each
control provides frequency-response characteristics of flat in center,
boost in CW and attenuation in CCW positions.
When tone controls are unnecessary, place the TONE SWITCH in
"DEFEAT" mode.
Output fuse
Each amplifier has an output fuse to protect the amplifier from
short-circuiting at the output or overloading. Check the fuse when
speakers connected do not sound even if the meter deflects
normally. If the fuse blew, replace with the same type fuse after
confirming the following points.
1 Speaker cables are not short-circuited or the load does not
exceed the rating specified.
2 Wiring is correctly done at the output terminal board.
Rack Mounting
To mount the amplifier in a standard 19-inch equipment rack, use
the MB-921 or MB-931 Rack-mounting Bracket accessory. (OPTION)
Servicing
Unpacking
Upon receipt of the amplifier shipment, please inspect for any
damage incurred in transit. If damage is found, please notify your
local TOA representative and the transportation company im-
mediately.
State date, nature of damage, whether any damage was noticed on
the shipping container, prior to unpacking. Please give waybill
number of shipping order.
Failure
Should amplifier fail, contact your nearest TOA authorized con-
tractor or service center.
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