Viscount chorum 60 User manual

viscount
User Manual
- English
Ver. EU - 1.0
Chorum

WARNING: READ THIS FIRST!
WARNING
AVIS
RISK OF ELECTRIC SHOCK
DO NOT OPEN
RISQUE DE CHOC ÉLECTRIQUE
NE PAS OUVRIR
This symbol is intended to alert the user to the
presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of
electric shock to persons.
This symbol is intended to alert the user to
the presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK:
DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE
AND OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES,
SHOULD NOT BE PLACED ON THIS APPARATUS.
DO NOT REMOVE COVER (OR BACK)
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
"INSTRUCTIONS PERTAINING TO A RISK OF FIRE,
ELECTRIC SHOCK OR INJURY TO PERSONS"
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
WARNING:
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water.
6) Clean only with dry cloth.
7) Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8) Do not install near any heat sources such as radiators, heat registers, stoves
or other apparatus (including amplifiers) that produces heat.
9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one
wider than the other. A grounding type plug has two blades and a third grounding prong. The wider blade or the third
prong are provided for your safety. If the provided plug does not fit in to your outlet, consult an electrician for
replacement of the obsolete outlet.
10)Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
11)Only use attachments/accessories specified by the manufacturer.
12)Use only with the cart, stand, tripod, bracket, or table specified by
the manufacturer, or sold, with the apparatus. When a cart is used,
use caution when moving the cart/apparatus combination to avoid
injury from tip-over.
13)Unplug this apparatus during lightning storms or when unused for long periods of time.
14)Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged
in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into
the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been
dropped.
NOTE: The socket-outlet shall be installed near the equipment and shall be easily accessible.

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Viscount Chorum User Manual
1. Important notes...............................................................................................................................2
1.1 Looking after the product.............................................................................................................................2
1.2 Notes about the manual ................................................................................................................................2
2. General description.........................................................................................................................4
3. Switching on and main video page .............................................................................................. 13
3.1 The Main Menu............................................................................................................................................14
4. Volume settings (Volumes function)............................................................................................ 15
5. Instrument general settings (Settings menu)............................................................................... 16
5.1 Selecting reverb type (Reverb parameter).................................................................................................17
5.2 Adjust equalizers (Equalizers functions)...................................................................................................18
5.3 Channeling signals on the audio outputs (External Outputs function) ...............................................20
5.4 MIDI settings (MIDI functions)................................................................................................................20
5.5 Regulating the notes velocity (Velocity Sens. function) .........................................................................23
5.6 Combinations operating functions (Combinations function) ...............................................................23
5.7 Saving the program change MIDI messages in the combinations (Combin. Prg function)............24
5.8 Security lock against unwanted changes (Security function)..................................................................25
5.9 Restoring factory settings (Factory Settings function)............................................................................26
5.10 Upgrading the operating system (Op.Sys. Upgrade function).............................................................27
6. Programming organ styles (Style menu)...................................................................................... 30
6.1 Adjusting the tremulants (Tremulants function) .....................................................................................31
6.2 Regulating the volume of each voice (Voices Volumes function) ........................................................31
6.3 Selecting the orchestral voices (Orchestra function) ..............................................................................32
7. Saving the organ configuration to files (File menu) .................................................................... 33
7.1 Informations concerning the USB pen.....................................................................................................33
7.2 Loading organ combinations and/or settings (File Load function) .....................................................34
7.3 Saving as file of organ combinations and/or settings (File Save function).........................................35
8. Playing and recording of musical sequences (Sequencer)........................................................... 37
8.1 Playing back a song (Play mode)................................................................................................................37
8.2 Recording a song (Record mode) ..............................................................................................................39
8.3 Overdubbing a song (Overdub mode)......................................................................................................41
9. Stop Local Off............................................................................................................................... 44
10. Appendix ..................................................................................................................................... 44
10.1 Demonstration songs ................................................................................................................................44
10.2 Temperament..............................................................................................................................................44
10.3 Temperaments of the Chorum organs....................................................................................................46
10.4 Content of the .set, .sts, .sta, .cmb and .all files.....................................................................................51
10.5 What MIDI is .............................................................................................................................................52
10.6 Detailed MIDI implementation ...............................................................................................................54
TABLE OF CONTENTS

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1.1 LOOKING AFTER THE PRODUCT
•Do not apply excessive force to the organ’s structures or the controls (knobs, stops, push-buttons,
etc.).
•When possible, do not place the instrument close to units which generate strong interference, such as
radios, TVs, computer videos, etc.
•Do not place the organ close to heat sources, in damp or dusty places or in the vicinity of strong
magnetic fields.
•Do not expose the instrument to direct sunlight.
•Never insert foreign bodies inside the instrument or pour liquids of any kind into it.
•For cleaning, use only a soft brush or compressed air; never use detergents, solvents or alcohol.
•Always use good quality screened cables for connection to amplification or diffusion systems. When
disconnecting cables from sockets, always take hold of the connector and not the cable itself; when
winding cables, do not knot or twist them.
•Before making the connections ensure that the other units (especially amplification and diffusion
systems) you are about to connect are switched off. This will prevent noisy or even dangerous signal
peaks.
•Connect the net cable to an earthed socket.
•Check that the voltage corresponds to the voltage shown on the serial number plate of the organ.
•If the organ is to be out of use for lengthy periods, disconnect the plug from the power socket.
1.2 NOTES ABOUT THE MANUAL
•Take good care of this manual.
•This manual is an integral part of the instrument. The descriptions and illustrations in this publication
are not binding.
•While the instrument’s essential characteristics remain the same, the manufacturer reserves the right to
make any modifications to parts, details or accessories considered appropriate to improve the product
or for requirements of a constructional or commercial nature, at any time and without undertaking to
update this publication immediately.
•All rights reserved; the reproduction of any part of this manual, in any form, without the
manufacturer’s specific written permission is forbidden.
•All the trademarks referred to in this manual are the property of the respective manufacturers.
1. IMPORTANT NOTES

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Viscount Chorum User Manual
•Read all the information carefully in order to obtain the best performances from your product and
waste no time.
•The codes or numbers in square brackets ([ ]) indicate the names of the buttons, sliders, trimmers and
connectors on the instrument. For example, [ENTER] refers to the ENTER button.
•Illustrations and screens showed are for information purposes only and may differ from your product.
•The instructions provided in this manual only concern the instrument's operating system version that
was up to date when the document was released. Therefore, such instructions might not describe
faithfully your current operating system release.
Please, visit the website www.viscountinstruments.com to check for the newest operating system
release and manual.

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User Manual
Chorum 90
2. GENERAL DESCRIPTION
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Chorum 60
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Chorum 50
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Chorum 40
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Viscount Chorum User Manual
1. PEDAL section.
Contains pedal stops and manual-pedal couplers. The couplers available are:
- [I/P]: Man.I to Pedal.
- [II/P]: Man.II to Pedal
- [III/P] (only three-manual models): Man.III to Pedal
2. MAN. II. section.
Contains stops, couplers and tremulant of Manual II.
In the three-manual models the couplers available are:
- [III/II]: Man.III to Man.II
- [I/II]: Man.I to Man.II
3. MAN.III section.
Contains stops and tremulant of Manual III.
4. MAN.I section.
Stops, manual couplers and tremulants for Manual I. The couplers available are:
- [III/I] (three-manual models): Man.III to Man.I
- [II/I] (two-manual models): Man.II to Man.I
5. Sezione ORCHESTRA.
Contains the orchestral voices. It is possible to select the voice activated by each stops. For further
information read par. 8.4.
With models that do not have this section, it is necessary to activate the orchestra voices using the
functions described in par. 6.2. A document with the list of stops that can be assigned to orchestra voices
can be downloaded from the website www.viscountinstruments.com. The document contains the list for
each model of the series.
6. Power switch.
Instrument on/off switch.
7. General combinations.
- [1] / [6]: pistons to recall the combinations saved in the selected memory bank (see [PREV] /
[NEXT] point). These combinations can be modified. To do so, follow the procedure described at
point 13.
- [HR]: restores the voice setup prepared in manual mode before a memory was recalled.
- [PREV.] / [NEXT]: general combinations sequencers. [PREV.] displays them in descending order,
[NEXT] in ascending order. Keeping pressed the [S] thumb piston and acting these commands it
is also possible to select the memory bank.
8. Pedal pistons.
- [1] / [6]: pedal divisional combinations. These combinations can be modified. To do so, follow the
procedure described at point 13.
- [HR]: restores the voice setup prepared in manual mode before a memory was recalled, when the
piston is on.
9. Manual III pistons.
- [1] / [6]: Man. III divisional combinations. These combinations can be modified. To do so, follow
the procedure described at point 13.
- [HR]: restores the voice setup prepared in manual mode before a Man.III memory was recalled,
when the piston itself is on.
- [P]: Man. III to Pedal coupling.

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10. Manual II pistons.
- [1] / [6]: Man. II divisional combinations. These combinations can be modified. To do so, follow
the procedure described at point 13.
- [HR]: restores the voice setup prepared in manual mode before a Man.II memory was recalled,
when the piston itself is on.
- [P]: Man. II to Pedal coupling.
- [III]: (only available for 3-manual models): Man.III to Man.II coupling.
- [I] (only available for 3-manual models): Man.I to Man.II coupling.
11. Manual I pistons.
- [1] / [6]: Man.I divisional combinations. These combinations can be modified. To do so, follow
the procedure described at point 13.
- [HR]: restores the voice setup prepared in manual mode before a memory for Man.I was recalled.
- [P]: Man.I to Pedal coupling.
- [III] (only available for 3-manual models): Man.III to Man.I coupling.
- [II] (only available for 2-manual models): Man.II to Man.I coupling.
12. [T] or [TUTTI] piston.
Piston or toe piston (where available) that recalls Tutti. The Tutti can be modified, for further
information read point 13.
13. [S] piston.
To save a combination or the Tutti, after setting up the voices, press and hold the [S] piston; then
press the piston corresponding to the combination you wish to save.
To save a Crescendo step, select it through the Crescendo pedal, press and hold [S], and then press the
general memories [HR] piston. To copy the content of one step to another, first select the step you
wish to copy, then press and hold the [S] piston, select the step in which you wish to paste the content,
and finally press the general memories [HR].
Organ Styles, tremulant Speed and Depth and orchestra voices can be saved to any divisional and
general combination or Tutti. This allows a wider range of different combinations, adjusting the sound
to play different songs.. To use these functions, first you have to set the saving options through the
COMBINATIONS function, described in par. 5.6.
14. Style pistons.
Here are the style pistons for the selection of the organ style (see also chapt. 6).
- [BAR]: baroque
- [BRK]: barock
- [ROM]: romantic
- [SYM]: symphonic
After the selection, if the display shows the main video page (see chap. 3), a pop-up message appears
for a few seconds, showing the Style name.
N.B.
If the [S] piston LED light is off, this means that the SECURITY function for the combinations
(see par. 5.8) is active. In this case it is not possible to modify combinations, Tutti and the
Crescendo.

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15. General organ controls.
These are the controls that are not dedicated to a single section, but affect the whole instrument.
- [ENC]: when the Enclosed function is active, the main volume can be controlled through the
expression pedal [MAN.III] (for three- and four-manual models), or [MAN.II] (for two-manual
models).
- [A.P]: enables the Automatic Pedal which allows the pedal voices to be played on Man.II in the 3-
manual models or Man.I in the 2-manual models. In this case, the organ’s pedal board is
deactivated and the voices become monophonic, with priority to the lowest note.
- [C]: Cancel piston. Turns off all stops, tremulants, couplers and all other pistons on the manuals,
then deletes and turns on the general and divisional HR. In case you have chosen to save into
combinations the status of [ENC], [A.P] and MIDI pistons (see COMBINATIONS function in
the par. 5.6), these are not turned off by Cancel.
16. MIDI Pistons.
These controls, provided for each manual and the pedal board, allow transmission of the note MIDI
codes on the MIDI [OUT] port to be enabled and disabled. All the instrument’s other MIDI messages
will continue to be transmitted, even with the MIDI control off.
17. Control and programming section.
The buttons and the display in this sections allow the user to program and set up the instrument and
the sequencer.
- [VOLUMES]: access the video page for all the volumes of the instruments.
- [SEQUENC.]: access the video pages for the use of the internal sequencer of the instrument.
- [FIELD S] e [FIELD T]: buttons used to move the cursor, identified by the field in reverse.
[FIELD S] moves it in the field above or the previous field, [FIELD T] in the field below or the
next field.
- [VALUE +] e [VALUE -]: buttons which regulate the values of the parameters, whether they are
numerical or alphanumerical. [VALUE +] increases, [VALUE -] decreases.
- [EXIT] e [ENTER]: access and quit the display screens and menus, or confirm or cancel
prompts made by the system. [ENTER] accesses menus/screens and confirms, [EXIT] quits
menus/screens and cancels.
18. Roll top lock. (where available).
19. Forward connection panel.
In this panel you can find the most frequently used connections and controls.
- [MASTER VOLUME]: regulates the main volume.
- [MIDI OUT]: it is the MIDI connector that transmits MIDI data generated by the organ.
- [MIDI IN]: it is the MIDI input to receive data sent from an external MIDI device.
- [USB]: USB drive connector (drive not included with the instrument), where the organ settings and
songs recorded with the internals sequencer can be saved.
- [INPUT]: line inputs which allow other instruments to be played using the organ’s internal
amplification. If the source is monophonic use the [L/MONO] connector only.
- [PHONES]: jack socket to which a headphone set can be connected. With headphones connected,
the organ’s internal amplification is cut off.
- [REVERB VOLUME]: regulates the volume of the reverb effect.
N.B.
- For further information about the MIDI interface, read par. 5.4, 10.5 and 10.6.
- For
f
urther in
f
ormation about the USB devices, read
p
ar. 7.1.

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20. Coupler controls.
Toe pistons to enable and disable the couplers.
21. [CRESCENDO] pedal.
With this pedal you can select the Crescendo level. These levels activate a fixed set of stops, linked
with an equal number of loudness, from pianissimo to fortissimo.
The currently selected level is displayed on the main video page inside the "CRESC." or “CRESCEN.”
box.
The Crescendo controls all the registers, and modifies the stops configuration. Each level of the
crescendo can be programmed. To save the Crescendo configuration, see point 13.
22. Expression pedals.
The expression pedals control at every time the volume of one or more sections, and can be used to
obtain the most diverse dynamic effects. The number of the pedals depends on the model and its
number of manuals:
- [MAN.III]: continuous control of Man.III volume.
- [MAN.II]: continuous control of Man.II volume.
- [MAN.I]: continuous control of Man.I volume.
- [MAN.I / PEDAL]: continuous control of Man.I and pedalboard volume at the same time.
The [MAN.I / PEDAL] pedal works also as Crescendo pedal. For further information about this
function read chapt. 5.
One of the pedals is actually equipped with a leverage system and can be used to control the sustain
effect for Orchestral voices.
23. Rear connections.
On the rear of the organ, there are various sockets to connect it to an external speaker system.
- [GEN. SUB] (General Sub-Woofer): dedicated output for the connection with low-frequency
speakers (sub-woofers).
- [EXT. +12V DC]: +12 Volt can be obtained from these connectors to switch-on any VISCOUNT
speaker connected to the [OUT 1] and [OUT 2] outputs.
- [OUT 1] and [OUT 2]: Jack line outputs with the organ stereo signal, based on the settings of the
video page described in par. 5.3.

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Viscount Chorum User Manual
After switching on the instrument, the display shows the introduction page,
then, the current version (Release) of the operating system,
the main video page appears in a few seconds,
On the top of this video page are the following parameters:
oTRANSPOSER: set the transposer.
oTUNING: fine tuning of the pitch, indicated as the frequency of A3 (an 8’ pipe).
oTEMPER. (Temperament):selector for setting historical temperaments of various periods (for a
description of temperaments, see par. 10.2 and 10.3).
Here, as in all video pages, use the [FIELD S] and [FIELD T] buttons to move the cursor. When
selected by the cursor, fields invert colour.
3. SWITCHING ON AND MAIN VIDEO PAGE
Models with two expression pedals
and the [CRESCENDO] pedal
Models with one expression pedal
and the [CRESCENDO] pedal
Models with two expression pedals Models with one expression pedal

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To set the value of a parameter, select it with the cursor, then press use [VALUE +] and [VALUE -].
Some parameters have a central range value (e.g. -6 / 0 / +6); to modify the central value, press
simultaneously the VALUE buttons. This will select the central value.
The display field MAIN MENU allows to access the main menu with all the organ configurations. To
enter the menu, place the cursor on this field and press [ENTER].
To return to the main video page from the MAIN MENU, press [EXIT].
In the lowest part of the video page there are 2, 3 or 4 boxes (according to the model in use) that indicate:
oBANK: the current memory bank, selected through the pistons [S] and [PREV] or [NEXT];
oCRESC.: the currently selected Crescendo step;
oMANUAL II o MAN II: Manual II expression level;
oMAN III: Manual III expression level;
oMAN I: Manual I expression level;
oMAN I/PED: Manual I and Pedalboard expression level.
oM II/P: Manual II and Pedalboard expression level.
3.1 THE MAIN MENU
The Main Menu contains several lower-level menus with all the settings of the instrument, divided into
groups.
Select the MAIN MENU field from the main video page. This page will appear:
As in the main video page the cursor is represented by the field with inverted colours. To move it, press
the buttons [FIELD S] and [FIELD T].
Here and in all the following video pages, some fields are used to access different pages. Select one of
these fields and press the [ENTER] button to access the corresponding page; when these fields are
selected, the name of the button appears on the right side of the field. Instead, when a field represents a
NOTES
- When the instrument is switched on, its transposition value is set to zero.
- Transposition does not have any effect on playback of songs with the internal sequencer
(unlike recording, where the notes are acquired with the current transposition). A specific
transposer is provided for this purpose (see chapt. 8).
- If after the power on the system displays the error message “RELESE CHECKSUM
ERROR”, contact the technical support at [email protected] reporting the error type as it
appears on the second line (SYSTEM or MODEL) and the numbers in the “M:”, “V:”, “S:”
and “Release” fields. You will receive the files and information necessary to restore the
instrument.
- At power up, if you see the message "PERIPHERALS UPDATE REQUESTED", press
[ENTER] to perform the required operations to complete the update. If the message was
displayed again contact the technical support at [email protected], specifying the
in
f
ormation dis
p
la
y
ed.

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Viscount Chorum User Manual
parameter that can be adjusted, the display shows the current value. To adjust a value, press the buttons
[VALUE +] and [VALUE -].
The fields of the MAIN MENU allow access to the following functions:
oSETTINGS: general instrument settings, equalizers, MIDI interface settings, audio outputs settings
(rear panel), factory settings reset and operating system update. These functions are described in
chapter X.
oSTYLE: program organ Styles. This function is described in chap. 6.
oCOMBIN. PRG (Combination Program Change):add Program Change and Bank Select MIDI
messages to combinations. This function is described in chap. 5.7.
oFILE: save and load files to and from an USB drive. Settings, Styles and combinations can be saved to
an external memory, the procedure is explained in chapter 7.
oDEMO: the instrument plays a demo song. This function is described in par. 10.1.
The Chorum organs allow the user to adjust all the volumes, in order to obtain a perfect sound balance
among the sections and between internal and external amplifications. To visualize the volume screen, press
the [VOLUMES] button:
Three-manual models Two-manual models
oPED (Pedal):pedal board divisional volume.
oMAN I (Manual I): first manual divisional volume.
oMAN II (Manual II): second manual divisional volume.
oMAN III (Manual III): third manual divisional volume.
oOUT 1: volume of the two [OUT 1] outputs on the rear panel.
oOUT 2: volume of the two [OUT 2] outputs on the rear panel.
oGEN.SUB: volume of the [GEN. SUB] output on the rear panel.
oINPUT: volume of the signal received by the [INPUT] connectors under the manuals.
To return to the previous video pages, press [VOLUMES] or [EXIT] or wait five seconds.
4.
V
OLUME SETTINGS
(
VOLUMES function
)

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To access the SETTINGS menu, containing all the configuration options, select the SETTINGS field
from the MAIN MENU; the following page will appear:
Use the [FIELD S] and [FIELD T] buttons to move the cursor and scroll through all the fields:
The following functions are available:
oREVERB: select the ambient, in order to simulate the reverb situation. The options span from a large
church, full of acoustic reflections and with a strong reverb, to small rooms with a shorter and softer
reverb. A detailed description of the reverb effect can be found in par. 5.1.
oKEYB.INVERS. (Keyboard Inversion): select YES to invert keyboards; as a consequence:
- three-manual models: Choir stops are played with the second manual, Great stops are played with
the first manual.
- two-manual models: Great stops are played with the second manual and Swell stops are played
with the first manual. To deactivate the function, select NO.
oSHORT OCTAVE: select YES to activate the short octave on the first octave of pedalboard and
manuals; this is necessary to play partitures written for ancient organs (between XVI and XVIII
century) where the first octave consisted of these notes:
To deactivate this function, select NO.
oEQUALIZERS: set up equalizer, internal amplification and rear panel outputs. These functions are
described in par. 5.2.
5. INSTRUMENT GENERAL SETTINGS
(
SETTINGS menu
)
Models with 2 or 3 pedals Models with one pedal

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Viscount Chorum User Manual
oEXT. OUTPUTS (External Outputs):select the audio signal of the [OUT 1] and [OUT 2] outputs
(rear panel). This function is described in par. 5.3.
oMIDI: MIDI interface settings. These functions are described in par. 5.4.
oVEL. SENS. (Velocity Sensitivity):calibrate the velocity of the manuals and pedalboard when using
Orchestra stops or transmitting MIDI note messages. This function is described in par. 5.5.
oCOMBINATIONS: customize combinations in a dedicated video page. These functions are
described in par. 5.6.
oCRESC/EXPR (Crescendo/Expression Pedal): select the operating mode of the [CRESCENDO] or
[MAN.I/PEDAL] pedal. It can be used for the Crescendo or to control the volume of Man.II (three-
manual models) or Man.I (two-manual models) and Pedalboard (function only available for models
equipped with two or three pedals).
oSECURITY: set the code to lock out the organ to prevent modifies at the instrument settings,
combinations, Tutti and Crescendo. These functions are described in par. 5.8.
oLCD CONTRAST: adjust the LCD display contrast.
oFACTORY SETT. (Factory Settings): restores the factory settings. These functions are described in
par. 5.9.
oSYSTEM: operating system information and update. These functions are described in par. 5.10.
To access a function, place the cursor on the field by using the buttons [FIELD S] and [FIELD T], then press
[ENTER]. To leave the SETTINGS menu, press [EXIT].
5.1 SELECTING REVERB TYPE (REVERB parameter)
Reverberation is the result of a series of sound reflections in a closed environment. Order and value of
each reflection depend on many factors of the environment, such as the size of the room, the number and
material of the objects inside the room, the listener’s position and so on. The digital processors of the
Chorum organs can recreate artificially the complex factors affecting the reverberation of a real pipe
organ, generating the right reverberation to complete an already excellent sound quality.
The REVERBER parameter in the SETTINGS menu allows to select the kind of reverberation, ranging
from great cathedral – with wide reflections - to small churchs with short and soft reverberation. There is
a total of eight styles.
Please note that the [MASTER REVERB] potentiometer is placed under the manual. Use the
potentiometer to adjust the reverb effect level.
The reverb styles are typical reverberation of a:
oCATHEDRAL: typical reverberation of a cathedral
oBASILICA: typical reverberation of a Basilica
oGOTHIC CHURCH: typical reverberation of a gothic church
oBAROQUE CHURCH: typical reverberation of a baroque church
oROMANIC CHURCH: typical reverberation of a romanic church
oMODERN CHURCH: typical reverberation of a modern church
oPARISH: typical reverberation of a parish
oCAPPELLA: typical reverberation of a chapel
Press [EXIT] to exit the video page and save the new settings.
N.B.
The internal reverberation also affects the signal from the [INPUT] ports located under the
manuals.

18
Viscount Chorum
User Manual
5.2 ADJUST EQUALIZERS (EQUALIZERS functions)
The Chorum organs are equipped with three graphic equalizers, one for the sound of the internal
speakers, and the other two for the audio output pairs [OUT 1] and [OUT 2] on the rear panel, and a low-
pass equalizer dedicated to the [GEN. SUB] output. The sound generated by the instrument can be
calibrated through the equalizers, in order to adapt to the environment and to the player's needs and
personal taste. To access the calibration page, select the EQUALIZERS field under the SETTINGS
menu. The following video page will appear:
the page contains the following fields:
oINTERNAL: graphic equalizer for the internal amplifier (and therefore for the internal speakers).
oOUT 1: graphic equalizer for the [OUT 1] output pair, on the rear panel.
oOUT 2: graphic equalizer for the [OUT 2] output pair, on the rear panel.
oSUB CROSSOVER: low-pass filter equalizer for the [GEN. SUB] output.
This is the graphic equalizers calibration page:
In the lower part of the screen there are the seven central band frequencies. To move the cursor from one
band to the other, use the buttons [FIELD S] e [FIELD T].
Each band can be modified, using the buttons [VALUE +] and [VALUE -] from +9 dB (maximum signal
gain) to -9 dB (maximum signal dampening). The level of gain or attenuation is graphically represented
and can be compared to the grading scale on the left side of the screen.
The following graph shows how the graphic equalizers works.
20 Hz
100 Hz 460 Hz 2
,
2 KHz
20 KHz
-8 dB
-7 dB
-6 dB
-5 dB
-4 dB
-3 dB
-2 dB
-1 dB
0 dB
+1 dB
+2 dB
+3 dB
+4 dB
+5 dB
+6 dB
+7 dB
+8 dB
Gain
F
220 Hz 1 KHz
+9 dB
-9 dB
4
,
6 KHz 10 KHz