Johannus Opus 5 User manual

User’s Manual
JOHANNUSJOHANNUS
Opus 5, 10, 20 and 30
AGO

User’s Manual Opus 5, 10, 20 and 30 AGO
JOHANNUSJOHANNUS
Document information
Document Code OPUSV202AG.wpd
Document Title User’s Manual JOHANNUS Opus 5, 10, 20 and 30 AGO
Issue date February 1999
Serial number
©Copyright 1998 JOHANNUS Orgelbouw The Netherlands
All rights reserved. No part of this publication may be reproduced and/or published by print, microfilm, audiotape,
electronically, mechanically or any other means, or stored in an information retrieval system, without prior written
permission from JOHANNUS Orgelbouw.
The information in this document is subject to change without notice and should not be considered a commitment
by Johannus Orgelbouw b.v. No responsibility is assumed for any error which may be appear in this document.

User’s Manual Opus 5, 10, 20 and 30 AGO
JOHANNUSJOHANNUS
Introduction
Congratulations on your decision to purchase a new JOHANNUS organ. You are now the owner of an
instrument with a well-chosen and balanced selection of stops. This organ gives you the opportunity to
perform the full repertoire of classical and liturgical organ music.
.
This User’s Manual contains a lot of useful information. First we present an overview of the organ, and
then we present tips on use. Finally, we investigate all of your organ’s technical possibilities, including
how to choose another temperament, using free combinations, MIDI applications and so on.
In the appendices you will find options, technical information, MIDI implementation charts and
registration examples.

User’s Manual Opus 5, 10, 20 and 30 AGO
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Table of Contents
An overview .................................................................. 1
The organ cabinetry ...................................................... 1
The console ............................................................ 1
The music rack .......................................................... 1
The roll-top ............................................................. 1
The pedalboard .......................................................... 2
The organ bench ......................................................... 2
Set up ....................................................................... 3
Connecting the organ ..................................................... 3
Switching on he organ ..................................................... 3
The console in detail ........................................................... 4
Overview of the controls per type ............................................ 4
Opus 5 AGO ...................................................... 4
Opus 10 and 20 AGO ............................................... 5
Opus 30 AGO ..................................................... 6
Accessories ............................................................ 7
Couplers ......................................................... 7
Tremulants ....................................................... 7
Tremolo (optional) ................................................. 8
Chorus .......................................................... 8
Intonation 2 ...................................................... 8
MIDI-tabs ........................................................ 8
Display ................................................................ 8
Stops ................................................................. 9
Flue pipes ....................................................... 9
Reeds ........................................................... 9
Special voices (optional) .................................................. 10
Overview of stops per type ................................................ 10
Volume adjustment ...................................................... 11
VOLUME control ................................................. 11
Expression pedal Great + Pedal ...................................... 11
Expression pedal Swell + Choir ...................................... 11
Thumb pistons ......................................................... 11
WM = Werckmeister .............................................. 11
MT = Meantone .................................................. 11
MB = Manual Bass ................................................ 11
CF = Cantus Firmus ............................................... 11
FA = Fix Accessories (Freeze Accessories) ............................. 11
SET ........................................................... 12
1 thru 8 ......................................................... 12
- and + ......................................................... 12
PGM = Program General Crescendo .................................. 12
PP thru T ....................................................... 12
0.............................................................. 12
RO = reeds off ................................................... 13
S/S = All swells to swell ............................................ 13
Controls .............................................................. 13
PITCH ......................................................... 13
TRANSPOSER .................................................. 13
ACOUSTICS .................................................... 13
Memory lock ........................................................... 13
MEMORY LOCK ................................................. 13

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Toe Studs ............................................................. 13
External connections ..................................................... 14
MIDI IN ......................................................... 14
MIDI MOD. ...................................................... 14
MIDI SEQ. ...................................................... 14
AUX IN ......................................................... 14
AUX OUT ....................................................... 14
EXT. REV. ...................................................... 15
PHONES ....................................................... 15
Choice of temperament ........................................................ 16
Equal temperament ..................................................... 16
Werckmeister III temperament ............................................. 16
Meantone temperament .................................................. 16
Using free combinations (capture system) ........................................ 17
What are free combinations? .............................................. 17
How to set free combinations .............................................. 17
Recalling the free combinations ............................................ 18
Using the General Crescendo ................................................... 19
MIDI applications ............................................................. 20
What is MIDI? .......................................................... 20
How and what to connect? ................................................ 20
Programmable MIDI ........................................................... 21
Program MIDI manually .................................................. 21
Program MIDI into capture system .......................................... 22
External Loudspeaker system .................................................. 25
3-position switch ........................................................ 25
Maintenance ................................................................ 26
Guarantee .................................................................. 26
Appendices ................................................................. 27
Technical specifications .................................................. 27
Technical specifications cabinet ............................................ 28
MIDI Implementation charts ............................................... 29
OPUS 5 AGO .................................................... 29
OPUS 10 AGO ................................................... 30
OPUS 20 AGO ................................................... 31
OPUS 30 AGO ................................................... 32
Registration examples ................................................... 33
Registration examples Opus 5 AGO ................................... 33
Personal registrations Opus 5 AGO ................................... 34
Registration examples Opus 10 AGO .................................. 35
Personal registrations Opus 10 AGO .................................. 36
Registration examples Opus 20 AGO .................................. 37
Personal registrations Opus 20 AGO .................................. 38
Registration examples Opus 30 AGO .................................. 39
Personal registrations Opus 30 AGO .................................. 40

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An overview
The organ cabinetry
The organ cabinet consists of the console shell, music-rack, pedalboard and bench.
Our standard organ cabinet is designed in dark or light oak with solid wood panels.
Your organ may be custom-ordered in another finish, color or wood.
The console
Typically, the console consists of two or three manuals and several accessories.
The keyboards have a church organ touch and are normally designed with synthetic key
surfaces. You may custom-order wooden keys. For more information, read “The console in
detail”.
The music rack
The music rack is typically not yet installed at the time of delivery. You can insert the music rack
into the groove provided on the top panel of the organ cabinet.
The roll-top
The wooden roll-top cover is provided with a lock and key. The lock is placed behind the music-
rack on the top of the organ.
Open the organ in the following way:
1. Put the key in the lock.
2. Rotate the key a quarter turn; the lock moves upwards.
3. Push the roll-top upwards.
Lock the organ in the following way:
1. Make certain that you have the key handy (see warning).
2. Pull at the roll-top toward you.
3. Push in the cover-lock.
Warning
You can lock the organ without using the key. However, the key is necessary to open the organ.
Therefore, always take care that the key is not left within the console before depressing the lock.

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The pedalboard
Typically, AGO (American Guild of Organists) organs have a 32-note AGO pedalboard.
The pedalboard is removable. At the front of each pedal key is a magnet. This magnet normally
sits in close proximity to a reed switch, which is invisibly mounted behind the black painted front
panel at the bottom of the console. When you depress a pedal key, the reed switch is activated
by the magnet at the end of the key.
Your new organ has lighting above the pedalboard which is switched on and off automatically
with the organ.
The following points are important for installing the pedalboard:
1. Make sure that the surface under the console in combination with the pedalboard is flat.
2. For the best alignment of the pedalboard, it may be necessary to adjust the console height
slightly while positioning the pedalboard.
3. Shift the pedalboard against the black painted front panel as close as possible.
The organ bench
Your organ is provided with a bench that contains a music shelf. If you wish, you can order an
adjustable-height bench.

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Set up
Connecting the organ
Pay close attention to the following points when you connect the organ:
1. Check the main voltage before you connect the organ. This voltage must be the voltage as
printed on the serial numberplate located on the left side under the keyboards.
2. Connect the organ to a grounded outlet. When this is not possible there is a chance some
functions will not work properly.
Switching on he organ
Switch on the organ by depressing the main power switch located on the right side of the
keyboards. The red pilot lamp will light up as soon as the organ is switched on. It takes a few
seconds before all controls are working. The computer circuit needs this time to initialize.
The display of the organ (located on the right side next to the keyboards) will show the figure
1.
Also the ‘0' thumb pistons will light up. (On the Opus 5 AGO, the SET piston will light up too.)

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The console in detail
Overview of the controls per type
Thenumber and the location of the controls are different by type. The following pages show
controls of the different Opus AGO models.
Opus 5 AGO
1. Roll-top cover 14. PITCH control 21. Toe studs couplers
2. Accessories 15. Thumb piston 22. General crescendo pedal
3. PEDAL stops • 0 (Cancel/undo) 23. Expression pedal Swell
4. Music rack 16. Thumb piston 24. Expression pedal Great+Pedal
5. Roll-top cover lock • PGM (Program. Gen. cresc. and MIDI) 25. Pedal
6. SWELL stops 17. Thumb pistons 26. Thumb pistons
7. GREAT stops • – (min) • 1 thru 7
8. Great keyboard • + (plus) 27. Serial number plate
9. Swell keyboard 18. Thumb piston 28. Thumb piston
10. Special voices • MB (Manual Bass) • SET
11. Display 19. Thumb piston 29. External connections
12. Power switch • Presets 30. ACOUSTICS control
13. TRANSPOSER control 20. Toe stud Tutti 31. VOLUME control

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Opus 10 and 20 AGO
The Opus 20 AGO has more stops than the Opus 10 AGO. De location of the controls is the
same.
1. Roll-top cover 19. Expression pedal Great+Pedal 32. Thumb pistons
2. Accessories 20. Toe studs capture • WM (Werckmeister)
3. PEDAL stops 21. Pedal • MT (Meantone)
4. Music Rack 22. External connections 33. Thumb pistons
5. Roll-top cover lock 23. ACOUSTICS control • MB (Manual Bass)
6. SWELL stops 24. VOLUME control • CF (Cantus Firmus)
7.Great keyboard 25. Key switch MEMORY LOCK 34. Thumb piston
8. Swell keyboard 26. Thumb piston • FA (Fix Accessories)
9. GREAT stops • SET 35. Thumb pistons
10. Special voices 27. Serial number plate • Presets
11. Display 28. Thumb pistons 36. Thumb pistons
12. Power switch • 1 - 8 Pedal division • – (min)
13. TRANSPOSER control 29. Thumb pistons • + (plus)
14. PITCH control • 1 - 8 Generals 37. Thumb piston
15. Toe stud Tutti 30. Thumb pistons • PGM (Program. Gen. cresc. and MIDI)
16. Toe studs couplers • 1 - 8 Great division 38. Thumb piston
17. General crescendo pedal 31. Thumb pistons • 0 (Cancel/undo)
18. Expression pedal Swell • 1 - 8 Swell division

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Opus 30 AGO
1. Roll-top cover 21. Pedal 35. Thumb pistons
2. PEDAL stops 22. Toe studs capture • 1 - 8 Great division
3. SWELL stops 23. External connections 36. Thumb pistons
4. Music Rack 24. Key switch MEMORY LOCK • WM (Werckmeister)
5. Roll-top cover lock 25. ACOUSTICS control • MT (Meantone)
6. GREAT stops 26. VOLUME control 37. Thumb pistons
7. Choir keyboard 27. Accessories • MB (Manual Bass)
8. Great keyboard 28. Couplers • CF (Cantus Firmus)
9. Swell keyboard 29. Thumb piston 38. Thumb piston
10. CHOIR stops • SET • FA (Fix Accessories)
11. Special voices 30. Serial number plate 39. Thumb pistons
12. Display 31. Thumb pistons • Presets
13. Power switch • 1 - 8 Generals 40. Thumb pistons
14. PITCH control 32. Thumb pistons • – (min)
15. TRANSPOSER control • 1 - 8 Pedal division • + (plus)
16. Toe stud Tutti 33. Thumb pistons 41. Thumb piston
17. Toe studs couplers • 1 - 8 Swell division • PGM (Program. Gen. cresc. and MIDI)
18. General crescendo pedal 34. Thumb pistons 42. Thumb piston
19. Expression pedal Choir+Swell • 1 - 8 Choir division • 0 (Cancel/undo)
20. Expression pedal Great+Pedal

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Accessories
The following accessories are standard:
!Couplers
!Tremulants
!Tremolo
!Chorus
!Intonation 2
!MIDI-stops
Couplers
All couplers are full unison couplers. This means all depressed keys are coupled.
Choir - Great (only for Opus 30 AGO)
This coupler couples the Choir to the Great. When playing keys on the Great, the corresponding
keyson the Choir will be played as well. This way you can add all stops of the Choir to the
Great.
Swell - Great
This coupler couples the Swell to the Great. When playing keys on the Great, the corresponding
keyson the Swell will be played as well. This way you can add all stops of the Swell to the
Great.
Swell - Choir (Only for Opus 30 AGO)
This coupler couples the Swell to the Choir. When playing keys on the Choir, the corresponding
keyson the Swell will be played as well. This way you can add all stops of the Swell to the
Choir.
Choir - Pedal (Only for Opus 30 AGO)
This coupler couples the Choir to the Pedal. When playing keys on the Pedal, the corresponding
keyson the Choir will be played as well. This way you can add all stops of the Choir to the
Pedal.
Great - Pedal
This coupler couples the Great to the Pedal. When playing keys on the Pedal, the corresponding
keys on the Great will be played as well. This way you can add all stops of the Great to the
Pedal.
Swell - Pedal
This coupler couples the Swell to the Pedal. When playing keys on the Pedal, the corresponding
keyson the Swell will be played as well. This way you can add all stops of the Swell to the
Pedal.
Tremulants
The tremulants are meant to vibrate the sound of the organ especially with slow or soft music.
Every division has its own independent tremulant.
When you use couplers and/or the CF piston the tremulants will be coupled to the corresponding
keyboards.

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Tremolo (optional)
The Gospel Organ stop has it’s own independent tremolo. This special stop belongs to the swell
division (Opus 5/10/20 AGO) or to the choir division (Opus 30 AGO).
When you use couplers (and/or the CF piston on the Sweelinck 5/10/20 AGO) the Gospel Organ
Tremolo will be coupled to the corresponding keyboards.
Chorus
To avoid the organ sounding too sterile, the instrument is designed with various stops tuned
differently in relation to each other. These small differences give the organ a broader, more
lively character. Switching on this stop will intensify the difference in tuning between the various
voices.
Intonation 2
Intonation determines the sound of the organ. In pipe organ-building the voicing is a very
important part of the building process. Every stop will be adjusted note by note to the room
where the organ is installed.
Your organ has two intonations, a romantic and a baroque intonation. In general a romantic
organ is wider and sounds symphonic, while a baroque organ is brighter and more tightly tuned.
Also see under “Choice of temperament”.
MIDI-tabs
The programmable MIDI-tabs are a special group of accessories. See under “MIDI applications”
and "Programmable MIDI".
Display
Aso-called 7-segment display is located on the right side next to the keyboards. This display
has several functions:
When the PGM thumb piston is not switched on the display will show the chosen memory group
of the capture system. Also see under “Using free combinations (capture system)”.
When the PGM thumb piston is switched on, the display will show the required data for
programming the MIDI-tabs. See under "Programmable MIDI".

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Stops
Thestops are on so-called tab stops. These are switches that will come back in their middle
position after being switched on or off. Therefore, in every tab a light will light up when that stop
is switched on. These stop lights also work with the use of presets and free combinations.
The last stop of each group is a MIDI-stop. For the use of these stops see chapter “MIDI
applications”.
On a pipe organ you switch a rank of pipes on or off with the stops. By varying the combinations
of stops the organist can create dynamic and colorful changes. This means that some
knowledge of the traditional pipe organ is necessary to make good stop combinations. You
should know a little bit about the different sounds of the different organ stops. That is why we
give a brief explanation about these different kinds of organ stops.
In the appendices you will find extensive examples of registrations.
Organ pipes can be divided in two main groups:
!Flues
!Reeds
Flue pipes
Flue pipes occur in two versions: open or (half) stopped. An example of a half-stopped pipe is
the Rohrflute. On the canister-stopper a small open tube has been soldered. An example of an
open flue pipe is the Principal. Normally the pipes of this stop are located in the facade of a pipe
organ. Flues can be subdivided in the following categories:
Principals
Principals are the Principal, Octave, Twelfth, Superoctave, Mixture, Scharff, Cymbal,
Rauschpfeife and Sesquialter. The last 5 stops sound with more than one pipe of different pitch
together per note. So called multi rank stops.
Strings
These are the narrow scaled, open flue pipes like: Viola di gamba, Vox Celeste and Salicional.
Flutes
Flute stops, open as well as stopped, are made of metal or wood. For example: Stopped Flute,
Gedackt, Bourdon, Subbass, Nazard, Waldflute, Gemshorn and Rohrflute.
Reeds
In a reed pipe the wind is blown into the pipe bringing a reed into resonance. This resonance
is ‘amplified’ and ‘colored’ by a tube (resonator). Reeds with a conical resonator are: Bombarde,
Trumpet, Schalmei, etc. The group of cylindrical resonators are: Fagotto, Cromorne,
Krummhorn, etc. The following reeds have a short resonator: Regal, Vox Humana, Ranket, etc.

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Special voices (optional)
Except the characteristic pipe organ voices, the organ also has four special voices.
Although these special voices are no standard pipe organ voices, nevertheless they can be
seen as an enrichment of your organ.
On the Opus 5/10/20 AGO, the Chimes, the Harpsichord, the Strings and the Gospel Organ are
added to the Swell division.
On the Opus 30 AGO, the Chimes, the Harpsichord, the Strings and the Gospel Organ are
added to the Choir division.
Overview of stops per type
You will find an overview of stops per organ in the appendix under examples of registrations.
Next to the stopnames you normally find the length, e.g. 8'. This means that the body of this pipe
for the lowest C key is 8' (appr. 240 cm). A stop with 16' sounds one octave lower.

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Volume adjustment
The volume is adjustable in the following ways:
VOLUME control
With the VOLUME control you adjust the General Volume, independent of the position of the
expression pedals. Therefore, this control has influence on each keyboard.
Expression pedal Great + Pedal
With the left expression pedal you adjust the Great and Pedal volume at the same time.
Expression pedal Swell + Choir
With the right expression pedal you adjust the volume of the Swell and Choir at the same time
(the last part for Opus 30 AGO only).
Both expression pedals work independently of the position of the VOLUME control.
Thumb pistons
The thumb pistons are switches that after being switched on or off remain in the same position.
Therefore, every thumb piston has a light built in that lights as soon as it is switched on.
WM = Werckmeister
By pushing this piston you choose for the Werckmeister temperament. See under chapter
“Choice of temperament”. As soon as you switch on this temperament the Meantone
temperament will be switched off automatically in case it was on.
By pushing the WM thumb piston again its function will be switched off again.
MT = Meantone
By pushing this piston you choose for the Meantone temperament. See under chapter “Choice
of temperament”. As soon as you switch on this temperament the Meantone temperament will
be switched off automatically in case it was on.
By pushing the MT thumb piston again its function will be switched off again.
MB = Manual Bass
By pushing this piston the pedal will be coupled to the Great keyboard automatically. When you
play a chord on the Great, the lowest key of this chord will be coupled from the Pedal to the
Great. By pushing the MB thumb piston again its function will be switched off again.
CF = Cantus Firmus
By pushing this piston the Swell will be coupled to the Great keyboard. When you play a chord
on the Great, the highest key of this chord will be coupled from the Swell to the Great. This way
the effect of an automatic solo can be achieved. In case the Swell to Great coupler is already
in use the CF function has no effect. By pushing the CF thumb piston again its function will be
switched off again.
FA = Fix Accessories (Freeze Accessories)
When you use the couplers and tremulants in the fixed combinations (presets) or in the free
combinations (capture system) or by using the thumb piston “0" (cancel) these will change too.
You can avoid this by using the FA thumb piston. As long as this piston is switched on, you can
only switch the couplers and tremulants on or off by hand. By pushing the FA thumb piston
again its function will be switched off again.

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SET
A thumb piston to program:
!Free combinations (see under “Using free combinations”).
!MIDI-tabs.
1 thru 8
Thumbpistons to store a personal registration into the capture memory by giving these
registrations a number (1 thru 8) within a memory level (bank). These thumb pistons you need
again to call these stored registrations from the capture memory. See under chapter “Using the
free combinations”.
- and +
Thumb pistons with which you:
!Choose a Memory level (bank 1 thru 4). (See under “Using free combinations”.)
!Choose an expander module patch/voice number and a channel number (see under
“Programmable MIDI”).
PGM = Program General Crescendo
Piston that enables you:
!To change the stop combinations of the General Crescendo. See under “Using the General
crescendo”.
!To program a MIDI-tab. See under “Programmable MIDI”.
PP thru T
The fixed combinations (presets) are registrations, preset according to musical standards,
starting by PP (Pianissimo: very soft) thru T (Tutti: full organ).
The Tutti piston has two functions. When you play a stop combination chosen by yourself or
from the presets (PP thru F) the T piston calls the full organ: the normal function of this piston.
However, when you push the T once more you will recall the previous registration.
These presets have been fixed in the factory and cannot be changed by the user.
When you push one of the preset pistons the factory programmed stops will light up accordingly.
It is always possible to switch stops on or off by hand.
0
The 0 piston (cancel/undo) can be found at the far right under the lowest keyboard.The 0 piston
on the organ is duplicated. The 0-piston is also located to the right of the “T" piston.
The piston has two functions. It may happen that you switch on a preset or add a stop by hand
by mistake. By pushing the “0" once quicky you will undo the latest change.
Example
You play the registration of Flute 8', Flute 4', and Flute 2'. After some time you add the Principal
8' and Principal 4'. There is always a very short time between switching on the Principal 8' and
the Principal 4'. By pushing the 0 piston briefly only the Principal 4' will be switched off (undo the
last change). Not the Principal 8' as well as the Principal 4' will be switched off (according to the
organist this would be his last change). Actually the organ sees the Flute 8', Flute 4', Flute 2' and
the Principal 8' as the previous registration and the organist the combination Flute 8', Flute 4',
and Flute 2' as the last one.
When pushing the “0" piston longer all stops will be switched off at once. Exceptions are: the
couplers and the tremulants when the FA piston is switched on and the stops Chorus, Intonation
2 and the MIDI.

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RO = reeds off
Located to the far right of the presets is the RO (Reeds Off) thumb piston. By pushing this piston
all reeds will be switched off at once. As long as the RO piston is switched on no reeds can be
switched on. By pushing the RO thumb piston again its function will be switched off again.
S/S = All swells to swell
The S/S piston may be a custom-ordered piston for the Sweelinck 30 AGO. Pushing this piston
will couple all expression pedals to the swell division expression pedal. This enables you to
adjust the volume of the entire organ with only one expression pedal.
Controls
PITCH
With this control you can adjust the temperament of the organ in quarter steps.
This control has a central position indication, which means that, when turning, you can feel this
control click in this central position. This central position is meant to tune the organ (with the
TRANSPOSER control on position 0) on A=440 Hz
TRANSPOSER
With this control it is possible to transpone the organ. This means that the organ can be
transposed 1, 2 or 3 set half steps lower or higher. When the position of the control is 0, the
standard pitch for the organ is A=440 Hz, on the condition that the PITCH control is in central
position.
When using the TRANSPOSER in combination with the PITCH control it is possible to adjust
the organ 3 half steps higher or lower.
.ACOUSTICS
The build-in digital acoustics provide a spacial reverberation of the organ sound. With this ontrol
the volume of the reverberation can be adjusted. To completely switch off the reverberations you
turn the control to the left.
Memory lock
MEMORY LOCK
To save your registrations or to modify stored registrations, this switch must be switched on. See
chapter “Using free combinations”.
Toe Studs
The organ have the following Toe Pistons/Studs:
COUPLER pistons
With these toe studs you can control couplers. When a coupler is switched off, you can switch
it on with the toe studs. Reverse is also possible.
TUTTI piston
This toe stud has the same function as the T thumb piston of the fixed combinations.
CAPTURE pistons (Except with Opus 5 AGO)
These toe studs have the same function as the memory pistons 1 thru 8.

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External connections
The following external conceptions are located left under the console:
MIDI IN
To receive MIDI-codes from the other instruments.
MIDI MOD.
Programmable MIDI-output. This MIDI-output is programmable for optimal use of e.g. an Sound
expander module.
MIDI SEQ.
Non-programmable MIDI-output. This MIDI-output is sending a constant data-output with all (for
e.g. a sequencer) required information (data dump).
When using our personal voicing software INTONAT you should use the MIDI SEQ output to
send data to the computer. (In fact, a data dump too).
AUX IN
This input can be used to amplify the sound of an external device through the speakers of the
organ. E.g., it is possible to play the sound of an expander module that is controlled by the
organ’s MIDI out through the organ’s speakers.
The volume of the device that is connected to the AUX IN cannot be adjusted by the expression
pedals or the VOLUME control (except external devices that are controlled by the organ’s MIDI
OUT).
AUX OUT
This output is meant to connect an external stereo amplifier.

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EXT. REV.
The connection EXTERN REVERB is specifically for the JOHANNUS external surround
acoustics device. This system, that works with 4 independent loudspeaker boxes in the room,
creates a realistic acoustical impression of a concert hall, church or cathedral. It is not
recommended to use this output for other purposes.
PHONES
This is the connection for a stereo headphone and suited for up to 2000 ohm.
Using a low impedance headphone (e.g. 8 ohm) may give a too loud a volume. This can be
regulated with the VOLUME control.
When using a headphone the organ loudspeakers will be automatically switched off. All
loudspeaker channels will be divided stereophonically through the two headphone channels.