Rolls SX21 Users Manual
DC IN
12 VDC
-
+
HIGH
LEVEL
HIGH LEVEL
PWR
0 10
HIGH
OUTPUT
SX21
OUTPUT
INPUT LOW
CROSSOVER
TINY TWO-WA Y
LIMITED WARRANTY
free from defects in materials and workmanship under normal installation, use
and service for a period of one (1) year from the date of purchase as shown on
the purchaser’s receipt.
limited to repair or replacement (at our option), during the warranty period of
any part which proves defective in material or workmanship under normal
installation, use and service, provided the product is returned to Rolls Corporation, TRANSPORTATION CHARGES PREPAID. Products returned to us or to
an authorized Service Center must be accompanied by a copy of the purchase
receipt. In the absence of such purchase receipt, the warranty period shall be one
(1) year from the date of manufacture.
defacement, misuse, abuse, neglect, accident, destruction or alteration of the
serial number, improper electrical voltages or currents, repair, alteration or
maintenance by any person or party other than our own service facility or an
authorized Service Center, or any use violative of instructions furnished by us.
obligations or liabilities. ANY IMPLIED WARRANTIES, OBLIGATIONS, OR
LIABILITIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED
W ARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL BE LIMITED IN DURATION TO THE ONE YEAR
DURATION OF THIS WRITTEN LIMITED WARRANTY. Some states do not
allow limitations on how long an implied warranty lasts, so the above limitation
may not apply to you.
INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS
OR ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, WHATSOEVER. Some states do not allow the exclusion or limitation of special,
incidental or consequential damages so the above limitation or exclusion may
not apply to you. This warranty gives you specific legal rights, and you may also
have other rights which vary from state to state.
This product is warranted to the original consumer purchaser to be
The obligation of Rolls Corporation under this warranty shall be
This warranty shall be invalid if the product is damaged as a result of
This one-year warranty is in lieu of all expressed warranties,
IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL,
LEVEL
LOW LEVEL
1K
500
375
TINY TWO-WAY
CROSSOVER
250
FREQUENCY
100
SX21
INPUT FREQUENCY LOW
INPUT
1.5
75
2K
0 10
TINY TWO-WA Y XOVER
2.5K
50
CLIP
0 10
SX21
SPECIFICATIONS
Input Impedance: 10K9
Output Impedance: 1K9
Headroom: +10 dBV
Pow er Requrements: 12 - 16 VDC, 150 mA;
SX21
Tiny Two-W a y Crossover
The SX21 is a unique frequency dividing device for small
sound reinforcement applications. The unit features a 24
dB/Octave rolloff rate, a frequency dividing r ange of 50Hz
to 2.5kHz, and an external power supply for noise
reduction. All this in a compact pac kage with a compact
price.
• 24 dB/Octave rolloff
• 1/4" unbal. Input and Outputs
• 50Hz to 2.5 kHz crossover range
factory modified)
• External power supply for low noise operation
Rolls Corporation
Salt Lake City, UT
8/01
(may be
Owners Manual
Rolls part number PS27
Size: 4.25" x 3.625" x 1.5"
Weight: 1 lb.
INTRODUCTION
Thank you for your purchase of the SX21 Tiny Two-Wa y Crossov er.
Please review this manual to get the best performance from this unit.
DESCRIPTION
FRONT PANEL
INPUT
0 10
SX21
FREQUENCY
250
100
75
50
CLIP
LOW LEVEL
375
500
1K
1.5
2K
2.5K
0 10
TINY TWO-WA Y XOVER
HIGH LEVEL
0 10
PWR
INPUT: Adjusts the input le v el to the SX21.
FREQUENCY : Selects the crossover frequency from 50Hz to 2.5kHz.
LOW LEVEL: Adjusts the amount of output signal from the LO W OUT
jack.
HIGH LEVEL: Adjusts the amount of output signal from the HIGH OUT
jack.
CLIP LED: Indicates overload in the SX21. This LED lights 3 dB before
actual circuit clipping occurs.
PWR LED: Indicates the SX21 po wer supply is connected to the unit and
an AC outlet.
REAR PANEL
(Note: The rear panel jacks are
labeled on the top of the unit.)
LEVEL
HIGH
LEVEL
CROSSOVER
TINY TWO-WA Y
INPUT FREQUENCY LOW
SX21
INPUT: 1/4" TS unbalanced jack
for connecting to the output of a
mixer or other device containing
+
12 VDC
DC IN
OUTPUT
HIGH
OUTPUT
LOW
INPUT
the signal to be divided.
LOW OUT: 1/4" TS unbalanced
jack containing the signal of
frequencies
below
the crossover
frequency.
HIGH OUT: 1/4" TS unbalanced
jack containing the signal of
frequencies
above
the crossover
frequency.
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 amplifier and speaker combination.
Check speaker specifications to ensure that the speakers are receiving
the proper frequencies. Shown belo w is an e xample f or connecting the
SX21.
From output of mixer or other
signal source to be divide
120 VAC
50/60 Hz 15 VA
AMPLIFIER
SERIAL NUMBER
235-
d
CHANNEL TW
O
OUTPUTS
CHANNEL ONE
RISQUE DE CHOC - NE PAS ENLEVER
CHANNEL TW
INPUTS
O
CHANNEL ONE
CH. 1
CH. 2
DC IN: F or connection to an e xternal power supply, 12-16 volts DC, 150
mA; Rolls model PS27.
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