APART MA30 Manuel utilisateur
MA30 - MA60
Instruction manual
4
Mixing amplifiers
Instruction manualMA30 - MA60
5
• Do not connect the inputs / outputs of amplifiers or consoles
to any other voltage source, such as a battery, mains source, or
power supply, regardless of whether the amplifier 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 operate equipment on a surface or in an environment
which may distort the normal flow of air around the unit. If the
unit is used in an extremely dusty or smoky environment, the
unit should be periodically “blown free” of dust.
• Do not remove the cover. Removing the cover will expose you
to potentially dangerous volt-ages.
• Do not drive the inputs with a signal level higher than that
required to drive equipment to full output.
• Do not run the output of any amplifier back into another input.
• In case of mal-function this device should be serviced by
qualified service personnel only.
• This unit has NOT been designed for use in mobile applications,
such as: mobile discobars, mobile PA systems, live bands, audio
rental systems, …
CAUTION
TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER OR BACK
NO USER-SERVICEABLE PARTS INSIDE
SERVICING ONLY FOR QUALIFIED PERSONNEL
6
Mixing amplifiers
Introduction
“Setting a new industry standard”
When we, at Apart, look at mixing amplifiers today it seems like the
complete pro audio industry slumbered. Stuck into old habits, the
overall look and feel remains a hassle for both users and installers
worldwide.
Due to extensive research and input from our partners, our R&D
department together with a world leading design company
succeeded in redefining the look of the “mixing amplifier” as we
know it today.
The new and revolutionary Apart MA30 and MA60 mixing
amplifiers offer the end-user an unseen cutting edge design and
ease of use. The groundbreaking front panel is clear and easy to use
without any unnecessary bells and whistles.
What you see is what you get, but there is more: the refreshing
rear panel will give every installer an instant gratification due to the
sheer and logic design.
Together with an unknown connectivity and immaculate sound
performance this reliable mixing amplifier is the new standard in the
fixed install audio market.
Instruction manualMA30 - MA60
7
Features
• 2U high with removable rack ears
• ½ rack width, possibility to join 2 units into one 19” wide unit
• High power class-D power amplifier module with 100 volt
output transformer
• Output power:
- MA30: 1 x 30 W @ 70 V / 100 V / 4 ohm.
- MA60: 1 x 60 W @ 70 V / 100 V / 4 ohm.
• High thermal efficiency.
• PRE-AMP output.
• Patented front panel designed to create an intuitive user
interface.
• Front control for end-user and back panel for configuration
installer (out of reach of end-user).
• Universal switching mode power supply.
• Auto standby mode (can be switched off) with < 0.5 W
standby.
• 24 volt DC / 500 mA priority output.
• Dedicated emergency input with mute all switch.
• Paging mic input with contact closure and chime.
• Front panel operated mic with switchable vox.
• 2 line inputs on RCA.
• Signal clip indicators and gain control on all inputs for fast and
easy configuration of the input gain.
• No cooling fan – maintenance free.
• Extended speaker and amplifier protection circuits: over current
protect, over temperature protect, APC clip limiter.
• 4 priority levels for audio routing.
8
Mixing amplifiers
1. Emergency input: connect your balanced 0 dBV line level
emergency input on the euroblock connector. If available,
connect the emergency contact at the “mute all” connection.
The contact must be “potential free”, i.e. a relay or switch
contact that does not carry any foreign voltage. The emergency
level can be set with the volume control only. If the clip led
lights up when the emergency signal is present, lower the
level of the emergency signal at the source to avoid distortion.
Activating the emergency input will also activate the priority
output (6).
2. Paging mic input: connect your paging mic here: the input
accepts microphone level signals on balanced euroblock and
line level signals on RCA. Adjust the gain potmeter so that
the clip led does not light up when the signal is at its highest
level. Then set the volume control as desired. When the paging
contact is closed, all other sources (except emergency input)
Connections
1
6
2 3 4 5
7 8 9 10
Instruction manualMA30 - MA60
9
will be muted, and the chime will sound. Set the chime level as
desired. The paging contact will also activate the priority output
(6). To test the chime level, a chime test button is present.
3. MIC input: connect a microphone here: the euroblock input
accepts balanced microphone or line level signals. Set the mic/
line switch accordingly. Phantom power (48 V) can be applied
to the balanced euroblock by pushing the phantom power
switch. The led beneath the switch will be lit when phantom
power is present. Adjust the gain potmeter so that the clip
led does not light up when the signal is at its highest level. If
necessary, activate the vox circuitry by turning the vox potmeter
until you hear an audible “click”. Now turn the vox potmeter
up until the vox circuit is activated. The MIC volume can be set
using the front panel potmeter (6). MIC can be activated by
pressing the MIC select switch on the front panel (2). The vox
circuit, when activated, will attenuate (30 dB attenuation) all
lower priority sources (input 1-2). MIC input is compatible with
the local input panel .
4. Input 1: line level input on RCA connectors. Adjust the gain
potmeter so that the clip led does not light up when the signal
is at its highest level.
5. Speaker out and output EQ: speaker output connector on
euroblock. Use the 4 ohm, or the 70 volt or the 100 volt
output. Never use more than one output at the same time. Use
the Lo and Hi EQ potmeters to adjust the sound as desired.
6. Priority out: this connector will supply 24 VDC, max 500 mA
when priority is activated. Priority will be activated by the
emergency switch, or by the paging contact (and the chime
10
Mixing amplifiers
test button) on the paging mic input. Typically, 24 volt priority is
used to override volume controllers present on speaker lines.
7. Auto standby: set the switch to “enabled” to enable auto
standby.
8. Input 2: line level input on RCA connectors. Adjust the gain
potmeter so that the clip led does not light up when the signal
is at its highest level.
9. Pre-out: the pre-amp output carries the same line level signal
that is being fed to the power amplifier, i.e. the signal level is
determined by the position of the master volume control.
10. Mains inlet and mains power switch: connect the mains power
cord here. Switch on the power switch to power up the unit.
The mains fuse is also located here.
Note: emergency switch and the paging contact (and the chime
test button) will mute all lower priority input signals. MIC vox
will attenuate all lower priority input signals by 30 dB. This is also
known as “voice over circuit”.
The chime can only be activated by closing the paging contact (and
the chime test button) on the paging mic.
As long as the chime sounds (approx. 2 sec), the paging message
will be muted, even if the chime level is set to the minimum (off)
level.
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