Rolls SX21 User manual

Owners Manual
LIMITED WARRANTY
This product is warranted to the original consumer purchaser to be
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.
The obligation of Rolls Corporation under this warranty shall be
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 Corpora-
tion, 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.
This warranty shall be invalid if the product is damaged as a result of
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.
This one-year warranty is in lieu of all expressed warranties,
obligations or liabilities. ANY IMPLIED WARRANTIES, OBLIGATIONS, OR
LIABILITIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICU-
LAR 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.
IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL,
INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS
OR ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, WHATSO-
EVER. 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.
SX21
TINYTWO-WAY
CROSSOVER
Rolls Corporation
Salt Lake City, UT
8/01
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 rolloff rate, a frequency dividing range of 50Hz
to 2.5kHz, and an external power supply for noise
reduction.All this in a compact package with a compact
price.
• 24 dB/Octave rolloff
• 1/4" unbal. Input and Outputs
• 50Hz to 2.5 kHz crossover range (may be
factory modified)
• External power supply for low noise operation
DC IN
12VDC
+
-
INPUT LOW
OUTPUT HIGH
OUTPUT
INPUT FREQUENCY LOW
LEVEL HIGH
LEVEL
SX21
TINYTWO-WAY CROSSOVER
HIGH LEVEL
LOW LEVEL
FREQUENCY
INPUT
CLIP PWR
SX21
TINYTWO-WAY XOVER
50
75
100
250 375500
1K
2K
2.5K
1.5
0 10 0 10 0 10
SPECIFICATIONS Input Impedance: 10K9 Output Impedance: 1K9 Headroom: +10 dBV Power Requrements: 12 - 16 VDC, 150 mA;
Rolls part number PS27
Size: 4.25" x 3.625" x 1.5" Weight: 1 lb.

INTRODUCTION
Thank you for your purchase of the SX21TinyTwo-Way Crossover.
Please review this manual to get the best performance from this unit.
DESCRIPTION
FRONT PANEL
HIGH LEVEL
LOW LEVEL
FREQUENCY
INPUT
CLIP PWR
SX21 TINYTWO-WAY XOVER
50
75
100
250 375500
1K
2K
2.5K
1.5
0 10 0 10 0 10
INPUT:Adjusts the input level to the SX21.
FREQUENCY: Selects the crossover frequency from 50Hz to 2.5kHz.
LOW LEVEL:Adjusts the amount of output signal from the LOW 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 power 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.)
INPUT:1/4"TS unbalanced jack
for connecting to the output of a
mixer or other device containing
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.
DC IN:For connection to an external power supply, 12-16 volts DC, 150
mA; Rolls model PS27.
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 below is an example for connecting the
SX21.
DC IN
12VDC
+
-
INPUT
LOW
OUTPUT HIGH OUTPUT
INPUT FREQUENCY LOW
LEVEL HIGH LEVEL
SX21
TINYTWO-WAY
CROSSOVER
120 VAC
50/60 Hz 15 VA CHANNEL ONE
CHANNEL TWO
OUTPUTS
CH. 1
CH. 2
CHANNEL ONE
CHANNEL TWO
INPUTS
RISQUE DE CHOC - NE PAS ENLEVER
SERIAL NUMBER
235-
AMPLIFIER
From output of mixer or other
signal source to be divided