6
CH 4 OUT RCA JACK (25)
Provides a direct output of Channel 4 that is independent of EQ and muting. This output is ideal for music on hold
applications.
AUX OUT RCA JACK (26)
Provides a line level output to drive external power amps, hearing assistance systems, or as a record output for taping.
This output is after the EQ and Master Volume Control.
LOOP IN/LOOP OUT JACKS (27)
Functions as a preamp out/power amp in patch point. The Loop Out signal is a post EQ/Master Volume line level
output.
LINK SWITCH (28)
Breaks the connection between the preamp and the power amp (Loop Out/Loop In). These two jacks are shorted
together when the switch is in the "In" position. To use the Loop Out/In jacks as a patch point, the switch must be
placed in the "Out" position. The line level output signal is present at the Loop Out jack regardless of switch setting.
OUTPUTS (29)
A direct output, as well as several isolated transformer outputs, are provided to allow the proper interface between the
amplifier and the speaker system. The direct output allows direct connection to a 4 ohm speaker system. To use this
output, disconnect the jumper between the 4 ohm terminal and the XFMR terminal. Connect the speaker (or speakers)
from the GND terminal to the 4 ohm terminal.
Also provided are 8 ohm, 25 volt, and 70 volt balanced outputs. To use these outputs, the jumper between 4 ohm and
XFMR must be installed. For 8 ohm speaker systems, connect between the COM terminal and the 8 ohm terminal. For
"distributed" speaker systems, 25 volt and 70 volt outputs are provided. One more output is provided on the UMA
Series amplifiers. This is a balanced, transformer-isolated line level output. This output is provided for direct connec-
tion to booster power amplifiers, etc. This output is designed to deliver 1 V RMS into a 600 ohm load. See Figures 4
through 7 for possible output connections.
NOTE: Due to the high gain and frequency response of the UMA
Series amplifiers, it is necessary that the input cables
be routed away from the output cables to prevent instability.
AC OUTLET (UNSWITCHED) (30)
Provides AC power for auxiliary equipment with power consumption — 300 watts maximum.
FUSE (31)
The fuse is located within the cap of the fuseholder. If the fuse should fail, IT MUST BE REPLACED WITH THE
SAME TYPE AND VALUE IN ORDER TO AVOID DAMAGE TO THE EQUIPMENT AND TO PREVENT VOID-
ING THE WARRANTY. If the amp repeatedly blows fuses, it should be taken to a qualified service center for repair.
WARNING: THE FUSE SHOULD ONLY BE REPLACED WHEN THE POWER CORD HAS BEEN DISCON-
NECTED FROM ITS POWER SOURCE.
LINE CORD (120 V PRODUCTS ONLY) (32)
For your safety, we have incorporated a three-wire line (mains) cable with proper grounding facilities. It is not advis-
able to remove the ground pin under any circumstances. If it is necessary to use the equipment without proper ground-
ing facilities, suitable grounding adaptors should be used. Less noise and greatly reduced shock hazard exist when the
unit is operated with the proper grounded receptacles.
Содержание UMA 150T II
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Страница 9: ...9 Flow Diagram ...
