Hammond Model A, Manual, Page: 144 / 298

INSTALLATION OF PR AND QR TONE CABINETS
When these tone cabinets are installed the Room Size control on the rear of the
amplifier chassis should be adjusted in accordan ce with the instruction card in the
tone cabinet, and the reverberation device should be unlocked . Warning: Whenever
the cabinet is moved, even one or two feet, the reverberation device should be
locked. Failure to do this may cause one or m ore springs to become unhooked from the
driver or pickup assembly.
Tone cabinets embodying this reverberation unit do not provide a r e verberated signal
to other tone cabinets . If more than one tone cabinet of the type normally embodying
this unit is used and reverberation is desired from all tone cab i nets , then a
reverberation unit must be included in each tone cabinet.
Kits are available which will permit turning the r e verberation on and off from the
console without the use of additional cables. Several different kits are available,
depending upon the type of console , and the instruction sheet accompanying each kit
describes the installation and operation. These kits are designed for us e with PR
and QR series cabinets only.
SERVICE SUGGESTIONS
Should no reverberation be evident in playing a tone cabinet equipped with this
device, but a loud noise results from touching the springs, it is quite likely that
the locking
device has no t been completely opened. Make sure that the springs of the
unit are free of the clamps, which are located near the driver and pickup.
If in moving a tone cabinet a spring is disengaged from the driver or pickup,
the ends can again be reinserted in the loops. For proper operation it is sug gested
that the reverberation unit be removed for this operation and the loose springs be
allowed to hang quietly, then the end should be picked up and in serted in the loop
from which it became disengaged. The purpose of this procedure is to eliminate any
twist within the spring which could cause er ratic noises in operation be cause of
torque which would b e transferred to the pickup portion.
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