Rane AC 24 Operator's Manual

LOW
100
80 125
63 160
50 200
40 250
CHANNEL MUTE
31.5 315
Hz
A
FREQ
0 10 ms
DELAY
-64 0
INPUT LIMIT LINK
OL
0 10 0 10
LEVEL LEVEL

QUICK START

The AC 24 is fully balanced with XLR connectors wired pin 2
"hot" per AES standards. Set the 3-WAY/4-WAY switch on the
rear appropriately. When in 3-WAY mode, the HI-MID controls
are inactive. The MID / HI-MID Frequency control becomes the
MID / HIGH Frequency control.
If you need a summed Mono Low Ouput, push the MONO
LOW switch on the front panel.
The FREQUENCY controls and other alignment procedures
are best set with a realtime analyzer (RTA). It's also good to have
range specifications for the drivers used in the system. See Select
Crossover Frequencies on page Manual-4.
The DELAY controls add from 0 to 10 ms of signal delay to
each Output to assist in signal-aligning drivers. See Adjust Signal
Delay on page Manual-5.
CD HORN EQ is provided if constant-directivity horns are
used. If CD Horn EQ is not required, make sure the HORN EQ
filters are off (button out) and frequency settings are at 8 kHz. See
Set Cd Horn Eqs on page Manual-8.
LEVEL controls are best set using the steps provided in Set
Output Levels on page Manual-8.
The MID, HI-MID and HIGH Output LIMIT Threshold
controls are linked to preserve spectral balance. Any Output that
WEAR PARTS: This product contains no wear parts.
OPERATORS MANUAL
MID HI-MID HIGH
500 4.0
400 630 3.15 5.0
4-WAY
315 800 2.5 6.3
250 1.0k 2.0 8.0
200 1.25k 1.6 10.0
MUTE MUTE MUTE
160 1.6k 1.25 12.5
Hz kHz
FREQ FREQ
4-WAY
0 10 ms 0 10 ms 0 10 ms
DELAY DELAY DELAY
-64 0 -64 0 -64 0
LIMIT LIMIT LIMIT
0 10 0 10 0 10
LEVEL LEVEL LEVEL
HORN EQ LOW
4 4
CHANNEL MUTE
2 8 2 8
kHz kHz
B
HI-MID FREQ HIGH
4-WAY
0 10 ms
DELAY
-64 0
INPUT LIMIT
OL
M S
A L
S A
T V
E E
R
0 10 0 10
MONO LOW STEREO LINK LEVEL LEVEL
crosses its threshold (indicated by the indicator) will cause all
Outputs to Limit. The LOW Output is independent, and may be
linked to the others via the LIMIT LINK switch. See Set Limit-
ers on page Manual-9.
When using STEREO LINK, we recommend turning down
the Output Level controls of the SLAVE (Channel B) to mini-
mum. This prevents unwelcome surprises if the Master / Slave
function is turned off.
The SUM Outputs are useful for instrumentation devices as
indicated in the setup procedure. These may also be used for split-
band EQ and/or split-band Limiter applications. When using
these, it is important to note that CD HORN EQ and DELAYS
affect the Summed Output. If you want a flat response, do not use
Delay or CD Horn EQ when using the Sum Outputs.
The INVERT switches located on the rear panel allow you
to correct driver polarity differences without rewiring. Linkwitz-
Riley filter outputs are always in phase with correct polarity.
In agreement with IEC and AES/ANSI standards, wir-
ing convention is pin 2 positive, pin 3 negative (return), pin 1
shield chassis ground. See the "Sound System Interconnection"
RaneNote included with this manual for more information on
cabling and grounding requirements.
ACTIVE CROSSOVER
MID HI-MID
100 500 4.0
80 125 400 630 3.15 5.0
4-WAY
63 160 315 800 2.5 6.3
50 200 250 1.0k 2.0
40 250 200 1.25k 1.6 10.0
MUTE MUTE
31.5 315 160 1.6k 1.25 12.5
Hz Hz kHz
FREQ FREQ FREQ
4-WAY
0 10 ms 0 10 ms
DELAY DELAY
-64 0 -64 0
LINK LIMIT LIMIT
0 10 0 10
LEVEL LEVEL
AC 24
HIGH HORN EQ
4 4
8.0
MUTE
2 8 2 8
kHz kHz
HI-MID FREQ HIGH
4-WAY
0 10 ms
DELAY
AC 24
4-WAY
CROSSOVER
-64 0
LIMIT
0 10
LEVEL POWER
Manual-1