Grounding; Front Panel Features; Power Switch; Thermal Status Meters - Ashly CFT-1800 Operating Manual

Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier
AC Power
Off On
FTX-1001 FTX-1501 FTX-2001
Idle 210 BTU
8 loads 550 BTU
4 loads 800 BTU
2 loads ---
Table 5.2: Max BTU per hour (both channels driven)
5.3

Grounding

In some installations where the sound system is
sensitive to RF noise or system-induced oscillation, it may
be necessary to ground the amplifier's chassis to the rack
enclosure. This is accomplished using star type
lockwashers on the four rack mounting screws. These
star washers will penetrate through the amplifier's paint
to adequately ground the chassis to the rack.
6
250 BTU 620 BTU
580 BTU 760 BTU
970 BTU 1340 BTU
2030 BTU 2590 BTU
6.

FRONT PANEL FEATURES

6.1

Power Switch

When the unit is switched on there is a 2 second
delay, during which time the PROTECT circuit will acti-
vate. The load is disconnected during this power-up se-
quence . When turning off the amplifier, the load is re-
moved instantly, and the protect LED will briefly turn on
as the power supply discharges.
6.2

Thermal Status Meters

This left-most green LED, when turned on, indi-
cates normal thermal status. If either amplifier channel
overheats, these lights will both turn off, indicating that
power has been cut off from the audio portion of the am-
plifier. The AC Power Switch will remain lit, and the
cooling fan continues to operate until the amplifier is
within safe operating temperatures again.
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Channel One
Channel Two
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Output