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CORUS STEREO PREAMPLIFIER

Operational Manual

REV05 2010

© Jeff Rowland Design Group 2010

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All Rights Reserved

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Summary of Contents for CORUS

Page 1: ...CORUS STEREO PREAMPLIFIER Operational Manual REV05 2010 Jeff Rowland Design Group 2010 All Rights Reserved...

Page 2: ...t if the supplied 3 wire grounded AC cable ground terminal is defeated or lifted or the unit is connected to a 2 wire ungrounded AC outlet The CORUS PREAMPLIFIER is designed to perform optimally with...

Page 3: ...o gain the maximum performance and ease of use for which this preamplifier was designed Please note that your CORUS PREAMPLIFIER and power supply serial numbers begin with the letters PD and C respect...

Page 4: ...u Options 14 Rear Panel 16 Handheld Remote Transmitter 17 Remote Transmitter Controls 18 Internal Switches 18 Remote Transmitter Battery Replacement 19 General Operations 20 Mute Settings 20 Channel B...

Page 5: ...e at any world wide mains operating voltage between 85V and 265V CERAMIC CIRCUIT BOARDS All audio circuits are implemented on military grade multilayer low dielectric constant Rogers ceramic circuit b...

Page 6: ...e inversion control on left and right channels for optimum speaker setup and system checks CHANNEL BALANCE Hi resolution 1 0dB panning of stereophonic image channel balance for a maximum 20dB shift VF...

Page 7: ...s of the control allow for very fine adjustments by 0 5dB increments QUIET POWER UP No turn on or turn off transients during intermittent power interruptions CUSTOMIZATION Inputs can be custom named a...

Page 8: ...HS BEFORE ATTEMPTING TO CLEAN IT THIS WILL PREVENT SMALL SCRATCHES FROM MARRING THE SURFACE BEFORE THE SURFACE COATING HAS HAD A CHANCE TO HARDEN COMPLETELY WARNING THE FRONT PANEL OF THE UNIT SHOULD...

Page 9: ...the preamplifier is returned to your dealer or JRDG Jeff Rowland Design Group the original packing materials must be used for shipment to avoid possible damage Neither JRDG Jeff Rowland Design Group n...

Page 10: ...iding sleeve of each cable between your fingers and pull sliding sleeve and cable away from the chassis connector NOTE DO NOT FORCE CABLE INTO RECEPTACLE UNLESS ALIGNMENT IS ACHIEVED After all interco...

Page 11: ...display features a visible indicator for the phases of both right and left channels on its lower left corner as follows a L R the phase for both channels is Normal not inverted b L R left channel inve...

Page 12: ...OUTPUT 1 2 B jacks If inputs 1 through 4 are selected BAL will be indicated If inputs 5 or 6 are selected UNBAL will be indicated 7 INPUT LABEL INDICATOR If the input is labeled via the MENU function...

Page 13: ...powered status 5 MUTE PUSHBUTTON Depressing the MUTE button once will reduce the volume by 20 dB Depressing the MUTE button a second time will fully mute the volume Depressing the MUTE button a third...

Page 14: ...the power is shut off Up to a maximum of 20dB offset can be achieved STANDBY Enters STANDBY mode STANDBY mode must be exited by pressing the front panel s Standby button RECORD SELECT Assigns any inpu...

Page 15: ...ting thereby matching the handheld remote transmitter transmission frequencies when adjusted to factory default setting REMOTE ALT 1 2 AND 3 Sets IR receiver frequencies to match handheld remote trans...

Page 16: ...ach channel MAIN 1 and MAIN 2 are mapped to OUTPUT A and OUTPUT B on the preamplifier back panel 4 RECORD OUTPUTS One 1 pair Balanced XLR One 1 pair Unbalanced RCA jacks for Record Out 5 REMOTE SENSOR...

Page 17: ...TES DURING IR TRANSMISSION A FAINT ACTIVITY LIGHT IS AN INDICATION THAT THE AA ALKALINE BATTERIES INSIDE THE HANDHELD REMOTE ARE DEPLETED AND NEED TO BE REPLACED The handheld remote transmitter featur...

Page 18: ...1 outputs XLR RCA and Main Output 2 XLR output Press ENTER or EXIT to leave this mode REC OUT VOLUME Pressing either button automatically enters the REC OUT LEVEL menu mode and then adjusts the level...

Page 19: ...ver unfasten the holding screw located in the bottom end of the transmitter unit Remove the spring loaded cover Remove both AA batteries Orient the remote transmitter with the keypad facing up and wit...

Page 20: ...ft or counter clockwise for a left shift Exit MENU From the Handheld Remote Transmitter Enter MENU Scroll to and select BALANCE Press either volume buttons on the handheld remote transmitter Each BALA...

Page 21: ...ents SETTING OUT 2 OFFSET Enter MENU Scroll and select OUT 2 OFFSET The balance indicator bar temporarily shows the amount of offset Adjust the offset with the front panel s knob or the remote s NAVIG...

Page 22: ...on 99 5 dB Input Impedance 40k ohms Balanced or Unbalanced Output Impedance 60 ohms Balanced or Unbalanced Inputs 4 pair Balanced XLR 2 pair Unbalanced RCA Outputs 2 pair Balanced XLR 2 pair Unbalance...

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