User manual ROLLS RP221
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Manual abstract: user guide ROLLS RP221
Detailed instructions for use are in the User's Guide.
[. . . ] THE ROLLS SONIC EXCITER - SCE PROCESSING The human ear can detect a frequency range of roughly 20Hz to 20kHz. However, the frequency response that a normal speaker can effectively reproduce is much, much less. Additionally, speakers add distortion and phase changes that make the sound quite different from that of the original material. A sonic exciter restores clarity and presence to the processed signal by correcting phase changes and harmonic structure differences. [. . . ] This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
SCHEMATIC
INSPECTION 1. 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. Please complete the Warranty Registration Card and return it to the factory. SPECIFICATIONS Frequency Response: Input Impedance: THD + Noise: Noise Floor: Indicators: Input/Output jacks Dimensions: Weight: Power:
20Hz to 40kHz 10K unbalanced <0. 07% typical -78 dB Power LED Clip LED 4: Stereo RCA jacks 4 lbs. 12 VDC (Rolls Model PS27)
5
2
FRONT PANEL DESCRIPTION
CONNECTION Connect your RP221 to the signal source you want processed such as a DJ mixer or Karaoke unit output for example. Connect the High Outputs to an amplifier and speaker combination designed to receive signals above at least 140 Hz. Connect the Sub Outputs to an amplifier/speaker combination designed to receive signals below 140 Hz. Remember to consult the speaker manufacturers owners manuals for proper crossover settings.
INPUT LEVEL 0
BOTTOM 0
DEFINITION 0
40
XOVER FREQ
55 80 90 100 120 130 25 Hz 140
SUB OCTAVE SYNTH LEVEL
SUB LEVEL
ACTIVE
30 27
dB
20
clip
-
+
-
+
0
10
0
10 pwr
RP221
INPUT LEVEL: Adjusts the amount of input signal to the RP221. ACTIVE switch: When pressed in, the sonic exciter and sub-synth circuits are engaged. BOTTOM: Controls the low frequency cut/boost (flat or no cut/boost is at about 11 O'clock). There is a 0 to 1/2 turn spectrum spread from mid-range to bass with this control as well as amplitude control. DEFINITION: Controls the amount of sonic clarity (sibilance) and sound spread. Setting it at 0 is flat response and minimal spread, 10 is maximum spread and definition. XOVER FREQUENCY: Sets the frequency point at which the high and low frequencies are split. The frequencies above the crossover point are sent to the High Outputs, the frequencies below this point are sent to the Sub Outputs. SUB OCTAVE SYNTH LEVEL: Adjusts the amount of signal coming from the Sub-Octave synthesizer circuitry. The Sub-Octave Synth is a special circuit that divides the low frequency signal (after the crossover) in half, and produces a sub-octave harmonic. This level control then mixes the resulting signal with the Sub Level signal. This includes the low frequencies after the crossover, and the added Sub Octave Synth signals. [. . . ] With program material playing, slowly and carefully increase the Sub Octave Synth Level until you hear the desired amount of low-end enhancement. Finally, adjust the Sub Level control to match the level of the High Frequency output for the desired mix of frequencies.
REAR PANEL DESCRIPTION
MADE IN USA
SERIAL NUMBER 221-
LEFT
MODEL RP221
RIGHT
SUB OUT HIGH OUTPUT LOOP THRU INPUT
12 VDC
12 VDC: Connects to the Rolls PS27 (12 VDC, 150 mA, tip negative) power supply. SUB OUT: Mono summed, dual RCA jacks containing the low frequencies (from the crossover frequency and below) portion of the signal. HIGH OUTPUT: Stereo RCA jacks containing the high frequencies (from the crossover frequency and up) portion of the output signal. [. . . ]
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