Rane SAC 23 - Manual (Page 3)

Manual-1
QUICK START
Whoa, hold on there. Even if you don’t read manuals as a matter
of principle, at least read this section to avoid hurting yourself or
your equipment.
Connect the SAC 23 with the POWER off. Balanced XLR
cables are recommended, but if you must convert to ¼" connec-
tors, consult the RaneNote, “Sound System Interconnection,” in-
cluded with this booklet. This device uses low impedance balanced
line drivers. Do not connect the “+” or “–” output pins to ground, as
this may cause the power supply to shut down. For unbalanced use,
leave the unused output pin (“+” or “–”) unterminated.
Consult the speaker manufacturers for the correct crossover
FREQUENCY settings. As rugged as some drivers are, many
(especially compression drivers) will not accept frequencies
outside of their normal range without producing distortion and
possibly self-destruction.
With all equipment turned off and LEVEL controls down,
begin making connections to the system as shown on page
Manual-6. When turning on the system, switch on the power
WEAR PARTS: This product contains no wear parts.
OPERATORS MANUAL SAC 23
STEREO 3-WAY ACTIVE CROSSOVER
INPUT
LEVEL +4 dBu OL LEVEL
MONO SUB
LEVEL
LOW
LEVEL
MID
LOW / MID MID / HIGH POWER
SAC 23
HIGH
LEVEL
0 dB
10 0
2
4
8
6
10 0
2
4
8
6
0 dB
10 0
2
4
8
6
0 dB
10 0
2
4
8
6
0 dB
STEREO 3-WAY
CROSSOVER
10 0
2
4
8
6
80 1k
100
125
160
800
630
500
200 315 250
400
7k 350
400
800
630
500
6.3k 85 950
5.0k
4.0k
3.15k
2.5k
1.25k 1.6k 2.0k
1.0k
Hz Hz
amplifiers last. Now, feed the SAC 23 some program mate-
rial. Start by turning up the LOW LEVEL, MID LEVEL and
HIGH LEVEL to the 0 dB marks. Slowly increase the INPUT
LEVEL , even if it goes all the way to 10, so the +4 dBu (green)
light blinks occasionally and the OL (red) light stays out. This
delivers the best signal-to-noise performance.
The MONO SUB OUTPUT is a sum of the Left and Right
Low Outputs. The MONO SUB LEVEL adjusts only this
Output and is not affected by the LOW LEVEL control. When
using a single mono bass bin along with stereo mid- and high-
range cabinets, set the 100 Hz FILTER to OUT, allowing the
front panel FREQUENCY to control the subwoofer crossover
point. When used with 3-way cabinets and a subwoofer, set the
100 Hz FILTER switch to IN to allow only frequencies below
100 Hz at this output jack. This way, the SAC 23 almost does
the job of a Stereo 4-Way crossover, but without removing that
awesome bass from the Left and Right Low Outputs.