INTRODUCTION
Thank you for your purchase of the Rolls RX321 Stereo Two-Way/Mono
Three Way Crossover. The RX321 was designed with the most demand-
ing audio applications in mind. The separate crossover controls and 24
dB/Octave rolloff rate provide a level of performance unmatched for the
price. The subwoofer filter and CD eq put the RX321 in a class of its own.
The frequency controls are a special 9-wiper design making them more
reliable than two or three wiper potentiometer-based crossover designs.
Because the RX321 has separate Hi-Pass and Lo-Pass filter frequency
controls, the sound engineer is no longer subjected to an "ideal" cross-
over curve. With the RX321, the actual crossover points may be over-
lapped or underlapped to provide the best solution for each specific
sound system. The RX321 also has built in 18 dB subsonic filters at 20
Hz to help protect the sound system from low transients. The versatile
inputs and outputs as well as commercial grade design make in an
important problem solver wherever an electronic crossover is needed.
FEATURES
• Separate control of Hi-pass and Low-pass filter frequencies
• Right and Left mixed subwoofer output
• Overload lights to help prevent clipping
• Stereo 2-Way or Mono 3-Way operation
• +27 dB maximum output level to drive long lines
• Phase reversal switch on Hi-pass outputs
• Built-in subsonic filter at 20Hz
• Constant Dispersion (CD) Horn equalization available.
• True 24 dB/Octave rolloff rates, not state variable filters
• Subwoofer switch to start Low-pass filters at subwoofer frequency
• XLR balanced and 1/4" unbalanced inputs and outputs
• Professionally designed circuit board and chassis for durability
• One year limited warranty
INSPECTION
1. Unpack and Inspect the RX321 package
Your RX321 was carefully packed at the factory in a protective carton.
Nonetheless, be sure to examine the unit and the carton for any signs of
damage that may have occurred during shipping. If obvious physical
damage is noticed, contact the carrier immediately to make a damage
claim. We suggest saving the shipping carton and packing materials for
safely transporting the unit in the future.
2. Please complete the Warranty Registration Card and return it to the
factory.
SPECIFICATIONS
Input Impedance:
10k
Ω
XLR or 1/4" bal.
Max Input Level:
+27 dB bal.
Max Output Level:
+27 dB bal. XLR
Output Impedance:
50
Ω
Max Gain:
20 dB
Filter Slope:
24dB/Oct.
Frequency Controls:
100Hz - 5kHz
Subwoofer Xover:
80Hz
Rumble Filter:
20Hz
S/N Ratio:
106dB
THD:
<.003%
IMD (SMPTE):
<.003%
CMRR:
52dB
Size:
1.75" x 6" x 19"
(4.5cm x 15cm x 48.3cm)
Power
120VAC (230VAC) 15VA
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