Rolls SX21 Instruction Manual

SX21 Tiny Two-Way Crossover
Connection guide
SPECIFICATIONS:
Input Impedance: 10K Ohm
Output Impedance: 1K Ohm
Headroom: +10 dBV
Power Requirements: 12 - 15 VDC, 150-500 mA;
Rolls part number PS27s
Size: 4.25” x 3.625” x 1.5”
Weight: 1 lb.
Rolls Corporation
Salt Lake City, UT
10/19
Made in USA ww.rolls.com
What's in the box?
1 - Made in USA SX21
1 - 15V power supply PN PS27s
1 - This owners manual
• 24 dB/Octave roll o
• 1/4” Input and Output
• 50Hz to 2.5 kHz crossover range
Made in USA ww.rolls.com
SX21
Tiny Two-Way Crossover
The SX21 is a unique frequency dividing device for small sound
reinforcement applications. The unit features a 24 dB/Octave
rollo rate, a frequency dividing range of 50Hz to 2.5kHz, and an
external power supply for noise reduction.
• 24 dB/Octave rollo
• 1/4" unbal. Input and Outputs
• 50Hz to 2.5 kHz crossover range
• External power supply for low noise operation

OPERATION
Connect the Input of the SX21 to the output of a mixer or other device that has the signal to be divided. The High and Low Outputs of the SX21 should be
connected to the proper amplier and speaker combination. Check speaker specications to ensure that the speakers are receiving the proper frequen-
cies.
DC IN
VDC
+
-
INPUT LOW
OUTPUT
HIGH
OUTPUT
INPUT FREQUENCY LOW
LEVEL
HIGH
LEVEL
HIGH LEVEL
LOW LEVEL
FREQUENCY
INPUT
CLIP PWR
SX21 TINY TWO-WAY XOVER
50
75
100
250 375
500
1K
2K
2.5K
1.5
0 10 0 10 0 10
SX21
TINY TWO-WAY
CROSSOVER
DC IN: For connection to an external
power supply, 12-15 volts DC Rolls
model PS27s.
CLIP LED: Indicates over-
load in the SX21. This LED
lights 3 dB before actual
circuit clipping occurs.
INPUT: Adjusts the input
level to the SX21.
FREQUENCY: Selects the crossover
frequency from 50Hz to 2.5kHz.
HIGH LEVEL: Adjusts the amount of output
signal from the HIGH OUT jack.
LOW LEVEL: Adjusts the amount of
output signal from the LOW OUT jack.
INPUT: 1/4” TS unbalanced jack
for connecting to the output of
a mixer or other device contain-
ing the signal to be divided.
LOW OUT: 1/4” TS unbalanced
jack containing the signal of
frequencies below the cross-
over frequency.
HIGH OUT: 1/4” TS unbalanced jack containing the
signal of frequencies above the crossover frequency.