Rolls RP583 User manual

OWNERS MANUAL
RP583
Studio Tube
Compressor/Limiter
Salt Lake City, UT
20 10 5
3
036
dB
+4 REF
OUTPUT
GAIN
REDUCTION
E
ASE
METER
S
ec 2
METER
CHANNEL ONE CHANNEL TWO
STEREO
LINK
20 10 5
3
036
dB
Studio Dual Tube Compressor/Limiter
RP583
ec 2
ACTIVE
OUTPUT LEVEL THRESHOLD RATIO ATTACK REL
E
ACTIVE
- OO dB +22 -20 dB +20 .5 ms 100 .1 S
2:1 OO:1
4:1 5:1
4:1 5:1
CHANNEL
ONE
CHANNEL
TWO
0
0
- OO dB +22 -20 dB +20 .5 ms 100 .1 S
e
2:1 OO:1

Congratulations on choosing the Bellari RP583 Studio Tube Compressor/
Limiter.We recommend that you take a moment and read this manual as
it provides information that will help you in using your unit to it's fullest
potential.The RP583 provides smooth, natural compression and clear
sonic quality and performance for the working musician, studio operator
or anyone who needs a comp/limiter with the warm, smooth, analog
sound. Each channel uses one Bellari premium 7025 tube in a unique
configuration to give superior signal control.The unit has both XLR and
1/4" inputs and outputs.Plus it has a Side Chain input and output for
each channel, for direct access to the detector circuits.
INSPECTION
1.Unpack and Inspect the RP583 package
Your RP583 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.
OPERATION
THE FOLLOWING SETTINGS ARE APPROXIMATE, AND LISTED AS
SUGGESTIONS ONLY.
VOCAL COMPRESSION
The most effective way to connect your RP583 for vocal compression is
by patching it into a channel insert of your mixing board.Connect the
Input of the RP583 to the send, and the RP583 Output to the return.You
may need a special cable to accomplish this, consult your mixer owner's
manual.
Set the level to the Compressor by speaking or singing into the micro-
phone at the same level that it will be used during performance. Set the
Meter switch to Output, and adjust the gain control on your mixer so the
RP583 meter moves to approximately 0.
Press in the Active button to put the RP583 in compression mode. See
diagram below for settings.
-20 -10
OUTPUT LEVEL THRESHOLD RATIO ATTACK RELEASE
4:1 5:1
- OO dB +22 -20 dB +20 .5 ms 100 .1 Sec 2
2:1 OO:1
DRUM COMPRESSION
The RP583 may be used to compress various drum parts for a smooth,
tight drum sound as well as more control over a final mix. Connect your
RP583 to the insert of your mixer and set the input level as directed
above.Shown below is an example of a typical drum compression
setting.
OUTPUT LEVEL THRESHOLD RATIO ATTACK RELEASE
-20 -10 4:1 5:1
- OO dB +22 -20 dB +20 .5 ms 100 .1 Sec 2
2:1 OO:1
PROGRAM COMPRESSION
Shown below is a setting example for entire program compression, used
for example to limit a final mixdown.
-20 -10
OUTPUT LEVEL THRESHOLD RATIO ATTACK RELEASE
4:1 5:1
- OO dB +22 -20 dB +20 .5 ms 100 .1 Sec 2
2:1 OO:1
14
BLOCK DIAGRAM
Note:The diagram shown is for both Channel One and Two.
THRESHOLD
RATIO
ATTACK
RELEASE
OUTPUT
LEVEL
ACTIVE
SWITCH
INPUT
OUTPUT
METER
SIDE CHAIN
IN
SIDE CHAIN
OUT
250V250V
GAIN RED.
OUTPUT
LEVEL
2
2
20 10 5
3
036
dB
Photocell
Power Supply
+12
-12
+250
Input
Buffer
Output
Buffer

REAR PANEL DESCRIPTION
Note: Channel One descriptions are identical to Channel Two
Outputs: XLR balanced and 1/4" unbalanced connectors for connecting
the RP583 to a mixer or other line level input.
Side Chain Input: 1/4" unbalanced jack for receiving incoming signals to
directly access the detector circuit of the compressor.
Side Chain Output: 1/4" unbalanced jack for sending out the signal
from the RP583. This jack may also be used as a pre-Output Level
output.
Note:The Side Chain Inputs and Outputs are not effects loops, they
break the signal path of the RP583 control circuits.
Inputs: XLR balanced and 1/4" unbalanced connectors for connecting
line level signals to the RP583.
SPECIFICATIONS
Frequency Response 20 Hz - 40 kHz
Input Impedance 10KΩbalanced
1MΩunbalanced
THD + Noise <0.1% typical
S/N Ratio 90 dB
Indicators 2: Active LEDs
2: Analog Meters
Input/Output jacks XLR balanced
1/4" unbalanced
Side Chain: 1/4" unbalanced
Dimensions 3.5" x 6" x 19"
(89mm X 162mm X 482mm)
Weight 6 lbs.(2.72 Kg)
Power 120VAC (230VAC) 15VA
FRONT PANEL DESCRIPTION
Note:Channel One descriptions are identical to Channel Two
Active Switch: Engages and disengages the compression.
Output Level: Varies the overall signal level from the RP583.
Threshold: Sets the level at which the income signal must overcome in
order for the RP583 to begin compressing.
Ratio: The signal to compression ratio - sets the amount of increase in
input signal required to raise the output signal 1 dB.
Attack: Varies the amount of time taken for the RP583 to begin com-
pressing once the Threshold level has been reached.
Release: Varies the amount of time taken for the RP583 to return to
normal gain once the signal has dropped below the Threshold level.
Stereo Link Switch: Links the detector circuits of both channels to-
gether. NOTE: CHANNEL TWO BECOMES THE MASTER CHANNEL.
Meter Switch: Switches the signal metering from indicating the output
jack level, to indicating the amount of gain reduction.
VU Meter: Indicates either the output signal level, or the amount of gain
reduction, depending on the position of the Meter Switch.
NOTE: THE INPUT SIGNAL LEVEL MAY ALSO BE METERED BY
PRESSING OUT THE ACTIVE SWITCH, THUS BYPASSING THE
COMPRESSOR CIRCUITS.
Power Switch: Turns the RP583 main power on and off.
2 3
20 10 5
3
036
dB
+4 REF
OUTPUT
GAIN
REDUCTION
ACTIVE
OUTPUT LEVEL THRESHOLD RATIO ATTACK RELEASE
METER
ACTIVE
- OO dB +22 -20 dB +20 .5 ms 100 .1 Sec 2
METER
CHANNEL ONE CHANNEL TWO
2:1 OO:1
4:1 5:1
4:1 5:1
STEREO
LINK
20 10 5
3
036
dB
Studio Dual Tube Compressor/Limiter
RP583
CHANNEL
ONE
CHANNEL
TWO
0
0
- OO dB +22 -20 dB +20 .5 ms 100 .1 Sec 2
2:1 OO:1
CAUTION
WARNING: DO NOT EXPOSE THIS EQUIPMENT TO RAIN
OR MOISTURE.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT
NOT REMOVE BACK. NO USER SERVICABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL.
RISQUE DE CHOC - NE PAS ENLEVER
RISK OF ELECTRIC SHOCK
DO NOT OPEN
120 VAC
50/60 Hz 15 VA
MADE IN U.S.A.
MODEL RP583
SERIAL NUMBER
583-
OUTPUT
CHANNEL TWO
SIDE CHAIN
INPUT OUTPUT
CHANNEL ONE
SIDE CHAIN
INPUT
BAL UNBAL INPUT OUTPUT UNBAL BAL BAL UNBAL INPUT OUTPUT UNBAL BAL

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, obliga-
tions 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 limita-
tion 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, inciden-
tal 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.
TABLE OF CONTENTS
Introduction 1
Inspection
Block Diagram
Front Panel Description 2
Rear Panel Description 3
Specifications 3
Operation 4
Vocal Compression Example
Drum Compression Example
Program Comp. Example
Warranty 5
5