APART MA30 Bedienungsanleitung

MA30 - MA60

Instruction manual

Mixing ampliﬁers

Instruction manualMA30 - MA60

• 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

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

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.

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

2 3 4 5

7 8 9 10

Instruction manualMA30 - MA60

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

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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