Altair FA-524, Owner'S Manual

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On the other hand, the following table show the output configurations in the different modes
of operation and their correspondence with the crossover printed rear panel:
MODE FA-524 FA-724
COMPONEN
OVERLAY
CH1
LOW
CH1
HIGH
CH2
LOW
CH2
HIGH
CHI
LOW
CH1
MID CH1
HIGH
CH2
LOW
CH2
MID CH2
HIGH
STEREO
THREE WAYS
-- -- -- -- CH1
LOW
CH1
MID
CH1
HIGH
CH2
LOW
CH2
MID CH2
HIGH
STEREO TWO
WAYS
CH1
LOW
CH1
HIGH
CH2
LOW
CH2
HIGH
CH1
LOW
CH1
HIGH
F.R. CH2
LOW
CH2
HIGH
F.R.
MONO SIX
WAYS
-- -- -- -- LOW MID1 MID2 MID3 MID4 HIGH
MONO FIVE
WAYS
-- -- -- -- LOW MID1 MID2 MID3 HIGH F.R.
MONO FOUR
WAYS
LOW MID1 MID2 HIGH LOW MID1 MID2 HIGH F.R. F.R.
MONO THREE
WAYS
LOW MID HIGH F.R. LOW MID HIGH F.R. F.R. F.R.
NOTE: F.R. is the abbreviation of FULL RANGE.
LEVEL CONTROL
Each one of the crossover ways provides a gauged level control between ±6 dB,
placed at the front panel. Notice that when this level control is placed in - 6 dB position
doesn't disappear the output signal.
These controls are designed in order to allow the level calibration of each way with
the others.
Due to that the control of level is placed before the limiter (as seen in the block diagram), the
output level depend on the calibration of the limiter.
SIGNAL, THRESHOLD AND OVERLOAD INDICATOR
The crossover has an indicator of signal, threshold and overload for way. This indicator
is a tricolor LED placed at the crossover front panel.
When the indicator is green, the output signal has overcome -20 dBv. Upon lighting the
indicator in color amber will have overcome the limiter threshold defined, and therefore is begin-
ning to limit, whenever is active. Upon passing the indicator to red color will know that there is
overload, that is to say, in any point of signal path the limit of security of 15 dBv has been sur-
passed. In order to correct this problem, should lower the level of that way or decrease the input
signal.
LEVEL INDICATOR
LIMITER ON LIMITER OFF
GREEN ORANGE RED GREEN ORANGE RED
Signal is present at
a level of -20 dBv.
The signal has
reached the limiter
threshold setting.
The signal stars to
saturate (intenal
clip) (+15 dBv).
Signal is present at
a level of -20 dBv.
-- The signal starts to
saturate (internal
clip) (+15 dBv).