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Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier
Stereo MOSFET Power Amplifier
v
el
F
TX-2001
FTX SERIES III
Protect
Protect
Clip-3-6-9
2
-3-6-9
2
Clip
6.3 Output Meters
Output meters display peak output voltage in dB,
referenced to full output. For example, if full output in a
given configuration was 400 watts, then “0” would mean
the amp is delivering the full 400 watts to the load, “-6”
would mean the output voltage is 6dB lower, or 100W.
6.4 Clipping Indicator
Clipping occurs when the signal peak levels ex-
tend beyond the available power supply rails, essentially
“cutting off” the crest portion of the waveform. This pro-
duces signal distortion and can potentially damage driv-
ers, as the signal begins to look like a square wave. The
red CLIP LED illuminates at the onset of clipping.
6.5 Protect Indicator
Protect mode in ASHLY amplifiers is automati-
cally activated during extreme fault conditions, as well
as during power-up and power-down. When in protect
mode, as indicated by the red LED, the speaker output
terminals are internally disconnected. Conditions caus-
ing the amplifier to switch into protect mode include the
following:
Turn-on delay/Instant turn off
DC voltage at the output (signals below 8 hertz
will be interpreted as DC voltage, and may trig-
ger the protect circuit)
Output short circuit
Ultrasonic signals at high amplitude
After the abnormal condition ceases, the ampli-
fier will automatically recover from protect
mode.