APART ZONE4 Assembly instructions

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MANUAL
ZONE4

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Zone 4 professional preamp has 4 stereo line source inputs on RCA connectors plus 3 mono mic/line balanced inputs
on euroblocks. All mic inputs feature individual sensitivity, level and tone control. Mic 2 and 3 inputs have switchable
phantom power. Each mic signal can be assigned to any of the 4 available zone outputs.
Microphone input 1 controls and connectors are available at the rear of the unit, featuring a balanced mic input with
priority switch and zone assign preset dipswitches. If you need more exibility and ease of installation, simply connect
our APart selective paging station MICPAT-4 instead, it will override the mic 1 zone assignments.
Mic 2 and 3 inputs can be controlled and assigned via the front panel controls. In order to avoid any abuse by the end
user, you can hide the microphone controls with the supplied cover plate.
Zone 1 to 4 stereo outputs can be individually congured as mono or stereo outputs and are available on RCA con-
nectors. Every zone has its own line input selector, bass and treble tone control and music level control. Every zone
also has its own microphone mix level control. Music and mic mix can be muted/unmuted manually per zone by simply
pushing the level knob.
System integrators will be pleased to nd a RS232 port at the back, allowing full control of the most important system
parameters.
If you need to control the zones locally, you can always add a wired remote, APart model ZONE4R to any zone. Wiring
is simple, using standard RJ45 connectors and CAT5 cable.
Finally there is the IR input port. This port can be used to connect our optional zone expansion unit.
Introduction

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1. Disconnect paging led : this led is lit when you push the disconnect paging button ‘2’.
2. Disconnect paging button : push this button to disable the paging function. This can be convenient in case you
want to avoid accidental paging and thus muting of the line inputs. Note that mic 2 and mic 3 are still active.
The paging button(s) will not mute the music (or line signals). Mic 1 will be entirely disabled.
3. Zone assign dipswitches mic 2 : with these dipswitches you can assign the mic 2 signal to zone 1 to 4.
4. Zone assign dipswitches mic 3 : with these dipswitches you can assign the mic 3 signal to zone 1 to 4.
5. Mic 2 tone control : turn the knob to darken the tone (turn to the left) or to brighten the tone (turn to the right).
6. Mic 3 tone control : turn the knob to darken the tone (turn to the left) or to brighten the tone (turn to the right).
7. Mic 2 level control : turn the knob to the right to increase mic 2 level or to the left to reduce the level.
8. Mic 3 level control : turn the knob to the right to increase mic 3 level or to the left to reduce the level.
9. Mic signal/clip led : this led is green when a signal is present on mic 2 input and is red when the input is over-
loaded. Reduce the gain knob at the rear to avoid overload and distortion.
10. Mic signal/clip led : this led is green when a signal is present on mic 3 input and is red when the input is over-
loaded. Reduce the gain knob at the rear to avoid overload and distortion.
11. Zone 1 line input selector switches : use these switches to scroll through line input A to D. The selected input is
shown in the display ‘12’ as A, b, C, d.
12. Multifunctional 7 segment LED display : this display shows the currently selected line input. When you change
the mic or music level by turning the knobs 15 or 17, the actual level is shown in the display for a few seconds.
13. Lo tone control : push the + or – buttons to increase or decrease the bass tones in zone 1. This tone control
has no in uence on the mic tone control and will adjust the tone on line signals only.
14. Hi tone control : push the + or – buttons to increase or decrease the high tones in zone 1. This tone control
has no in uence on the mic tone control and will adjust the tone on line signals only.
15. Zone 1 music level control : turn this knob to adjust the zone 1 music level. If you push this button, the music
will be muted. Pushing a second time will unmute the music signal in zone 1. This is indicated by led ‘16’.
16. Music mute led : this led lights up when the music in zone 1 is muted by pushing the ‘15’ knob or by activating
paging.
17. Mic mix level control zone 1 : turn this knob to adjust the zone 1 mic mix level. If you push this button, the mic
mix signal will be muted. Pushing a second time will unmute the mic mix signal in zone 1. This is indicated by
led ‘18’.
18. Mic mix mute led : this led lights up when the mic mix in zone 1 is muted by pushing the ‘17’ knob. Please note
that this will not disable the paging function of the mics, in other words : if the microphone signal is muted, but
when paging is activated, the music level will be muted also, unless you activate disconnect paging (button
‘2’).
19. On/off switch :  ip this switch to turn the unit on or off.
20. Power led : this led is lit when the power is on. When the unit is set to stand-by via RS232, then this led will
still be lit to indicate that mains power is still present.
Front panel
1 2
3
4 6 8 10 13 14 16 18
5 7 11 12 15 179
19
20

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Rear panel
1. Mains inlet socket : connect the supplied mains cable here, the internal power supply is self
adjusting and accepts AC voltages between 90 up to 260 VAC, 50 and 60 Hz.
2. Mains fuse : if the fuse blows, replace it with the same value and voltage rating, in this case :
T500mA L250V.
3. Audio GND/Lift switch : use this switch to isolate the audio ground from the electrical ground.
This is a handy feature to nd ground loops and to avoid hum in your audio signal.
4. RS232 connector : connect your serial cable here. For details, refer to the separate serial com-
munication section.
5. IR serial control bus : input for future remote expansion modules. Please note that no handheld
infrared transmitter is available for Zone 4.
6. Zone 4 remote panels connector : connect the separately available wired remote here. This is a
standard RJ45 connector for Zone 4 remote wall panels only. Never connect this to a computer
or other network. Damage caused by poor or incorrect installation is excluded from the
warranty.
Up to 8 pcs. ZONE4R remote panels can be connected to a single ZONE4. More than 1 panel
per zone can be used. Please refer to the ZONE4R manual.
7. Same as described in 6.
8. Same as described in 6.
9. Same as described in 6.
10. Output mode selector switch : here you can congure the individual zone outputs for mono or
stereo operation. In case of mono, the same ‘stereo mixed into mono’ signal is present on the
zone left and right connectors.
11. Zone 4 output connector on cinch connectors.
12. Zone 3 output connector on cinch connectors.
13. Zone 2 output connector on cinch connectors.
14. Zone 1 output connector on cinch connectors.
15. Source D line level input on cinch connectors.
16. Source C line level input on cinch connectors.
17. Source B line level input on cinch connectors.
18. Source A line level input on cinch connectors.
19. Mic 2/3 phantom power switch.
20. Mic 3 balanced input on euroblock connector
21. Mic 3 gain control: from mic level to line level (e.g. wireless microphone receivers).
1
2
3
4
5
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 24 26 28 29
21 23 25 27 30

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22. Mic 2 balanced input on euroblock connector
23. Mic 2 gain control: from mic level to line level (e.g. wireless microphone receivers).
24. Mic 1 balanced input connector with paging switch possibility. The paging contact can also be
used for mic 2 and 3. Closing this contact mutes the music.
25. Mic 1 level control
26. Mic 1 zone assign switch.
27. Mic 1 tone control.
28. Mic 1 input selector : push the switch in/out to select the mic connector on euroblock or the
MICPAT-4 selective paging station.
29. RJ45 connector for the MICPAT-4 selective paging station only. Up to 4 pcs. of MICPAT-4 can
be connected to a single ZONE4. A smart bus-sytem arranges the Priority (busy-line).
Please refer to the MICPAT4 manual.
30. Additional GND connecting screw.

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Block diagram

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IR FUNCTIONS ZONE LEAD
CODE
DEVICE ID
CODE
DATA
CODE
MUSIC VOLUME UP ZONE 1 9MS 04FB 83
MUSIC VOLUME DOWN ZONE 1 9MS 04FB 87
MIC VOLUME UP ZONE 1 9MS 04FB 82
MIC VOLUME DOWN ZONE 1 9MS 04FB 86
SELECT SOURCE A ZONE 1 9MS 04FB 11
SELECT SOURCE B ZONE 1 9MS 04FB 12
SELECT SOURCE C ZONE 1 9MS 04FB 13
SELECT SOURCE D ZONE 1 9MS 04FB 14
MUSIC VOLUME UP ZONE 2 9MS 04FB 8B
MUSIC VOLUME DOWN ZONE 2 9MS 04FB 8F
MIC VOLUME UP ZONE 2 9MS 04FB 8A
MIC VOLUME DOWN ZONE 2 9MS 04FB 8E
SELECT SOURCE A ZONE 2 9MS 04FB 15
SELECT SOURCE B ZONE 2 9MS 04FB 16
SELECT SOURCE C ZONE 2 9MS 04FB 17
SELECT SOURCE D ZONE 2 9MS 04FB 18
MUSIC VOLUME UP ZONE 3 9MS 04FB 93
MUSIC VOLUME DOWN ZONE 3 9MS 04FB 97
MIC VOLUME UP ZONE 3 9MS 04FB 92
MIC VOLUME DOWN ZONE 3 9MS 04FB 96
SELECT SOURCE A ZONE 3 9MS 04FB 21
SELECT SOURCE B ZONE 3 9MS 04FB 22
SELECT SOURCE C ZONE 3 9MS 04FB 23
SELECT SOURCE D ZONE 3 9MS 04FB 24
MUSIC VOLUME UP ZONE 4 9MS 04FB 9B
MUSIC VOLUME DOWN ZONE 4 9MS 04FB 9F
MIC VOLUME UP ZONE 4 9MS 04FB 9A
MIC VOLUME DOWN ZONE 4 9MS 04FB 9E
SELECT SOURCE A ZONE 4 9MS 04FB 25
SELECT SOURCE B ZONE 4 9MS 04FB 26
SELECT SOURCE C ZONE 4 9MS 04FB 27
ZONE4 REMOTE CONTROL CODE

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IR FUNCTIONS ZONE LEAD
CODE
DEVICE ID
CODE
DATA
CODE
SELECT SOURCE D ZONE 4 9MS 04FB 28
MUTE MUSIC ZONE 1 9MS 04FB 81
UN-MUTE MUSIC ZONE1 9MS 04FB 1A
MUTE MIC ZONE 1 9MS 04FB 8C
UN-MUTE MIC ZONE1 9MC 04FB 1B
MUTE MUSIC ZONE 2 9MS 04FB 89
UN-MUTE MUSIC ZONE 2 9MS 04FB 1C
MUTE MIC ZONE 2 9MS 04FB 90
UN-MUTE MIC ZONE 2 9MS 04FB 1D
MUTE MUSIC ON/OFF ZONE 3 9MS 04FB 91
UN-MUTE MUSIC ZONE 3 9MS 04FB 2A
MUTE MIC ON/OFF ZONE 3 9MS 04FB 98
UN-MUTE MIC ZONE 3 9MS 04FB 2B
MUTE MUSIC ON/OFF ZONE 4 9MS 04FB 99
UN-MUTE MUSIC ZONE 4 9MS 04FB 2C
MUTE MIC ON/OFF ZONE 4 9MS 04FB 88
UN-MUTE MIC ZONE 4 9MS 04FB 2D
DISCONNECT PAGING (ON) - 9MS 04FB 84
CONNECT PAGING (OFF) - 9MS 04FB 2E
SOURCE UP ZONE 1 9MS 04FB 85
SOURCE UP ZONE 2 9MS 04FB 8D
SOURCE UP ZONE 3 9MS 04FB 95
SOURCE UP ZONE 4 9MS 04FB 9D
Command structure : ZONE4 ID code –> command –> inverse command.

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Technical specificaTions
Outputs
OUTPUT STEREO ZONE 1 UNBALANCED cinch connector 0dB, 1 V, 100 Ohm
OUTPUT STEREO ZONE 2 UNBALANCED cinch connector 0dB, 1 V, 100 Ohm
OUTPUT STEREO ZONE 3 UNBALANCED cinch connector 0dB, 1 V, 100 Ohm
OUTPUT STEREO ZONE 4 UNBALANCED cinch connector 0dB, 1 V, 100 Ohm
FREQUENCY RESPONSE 20Hz - 30 KHz
NOISE > 90dB
THD < 0,02 %
CROSSTALK > 75 dB
MAX NOMINAL GAIN +5 dB
MAX OUTPUT VOLTAGE +13 dBV, 4.5 V
TONE CONTROL ZONE 1 TO 4 bass 75Hz +/-10 dB treble 10KHz +/-10 dB
Line inputs
LINE A TO D cinch connectors L & R channel
LINE A TO D SENSITIVITY 0dBV, 1V
LINE A TO D IMPEDANCE 100 KOhm
LINE A TO D MAX INPUT LEVEL +8 dBV
Mic/Line inputs
INPUT MIC/LINE 1 Balanced on euroblock connectors/RJ45
INPUT MIC/LINE 1 SENSITIVITY Mic: 3mV/ -50dBv Line: 2V/ 6dBV
INPUT MIC/LINE 1 IMPEDANCE 2KOhm/11KOhm
INPUT MIC/LINE 1 MAX INPUT LEVEL -43dBV/18dBV
INPUT MIC/LINE 2 AND 3 Balanced on euroblock connectors
INPUT MIC/LINE 2 AND 3 SENSITIVITY trim from 1,5mV/ -56dBv to 150mV/ -16dBV
INPUT MIC/LINE 2 AND 3 IMPEDANCE 15KOhm
INPUT MIC/LINE 2 AND 3 MAX INPUT LEVEL -38dBV to -1dBV (gain max – min)
CMRR > 50 dB
S/N RATIO > 65 dB @ mic level 4mV
THD < 0,09%
PHANTOM POWER MIC 2 AND 3 18 V, individually switchable
TONE CONTROL MIC/LINE 1 TO 3 from 100Hz/+3dB,10kHz/-6dB to 100Hz/-9dB, 10KHz/+4dB
ReMOte cOntROL VIA RJ45 CAT-5 PER ZONE
OPTIONAL MODELS

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Technical specificaTions
geneRaL
POWER SUPPLY 90 to 260 VAC / 50-60 Hz autoranging
DIMENSIONS W X D X H 420 (484) x 190 (210) x 44 mm
SHIPPING WEIGHT 2.4 Kg
NET WEIGHT 1.6 Kg
• Please check the carton box for any kind of damage on reception of the goods. In case of a damaged
carton, please contact your dealer before opening the carton.
• !!!! Danger !!!! Exposure to extremely high noise levels may cause a permanent hearing loss. Individuals
vary considerably to noise induced hearing loss but nearly everyone will lose some hearing if exposed
to sufciently intense noise for a sufcient amount of time. Therefore it is recommended that all persons
exposed to equipment capable of producing high sound pressure levels, such as this amplier, be protected
by hearing protection while installing or operating this unit.
• Read all documentation before operating your equipment.
• Keep all documentation for future reference.
• Save the carton and packing material even if the equipment has arrived in good condition.
• Should you ever need to ship the unit, use only the original factory packing.
• Do not spill water or other liquids into or on the unit.
• Make sure power outlets conform to the power requirements listed on the back of the unit.
• Do not use the unit if the electrical power cord is frayed or broken.
• Have gain controls on ampliers turned down during power-up to prevent speaker damage if there are high
signal levels at the inputs.
• Do not connect the inputs / outputs of ampliers or consoles to any other voltage source, such as a battery,
mains source, or power supply, regardless of whether the amplier or console is turned on or off.
• Power down & disconnect units from mains voltage before making connections.
• Do not use the unit near stoves, heat registers, radiators, or other heat producing devices.
• Do not remove the cover. Removing the cover will expose you to potentially dangerous voltages.
• In case of mal-function this device should be serviced by qualied service personnel only.
Safety information

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ANY SUGGESTION?
They are well appreciated and eventually rewarded!
Send your ideas or suggestions to
[email protected]
ZONE4 is developed by
Audioprof nv
Lanteernhofstraat 90
BE-2100 Deurne
BELGIUM