APART MA-35 Manuel utilisateur

MA35-65

Instruction manual

Instruction manualMA35 & MA65

MA35 & MA65

MIXING AMPLIFIERS

Safety First !

• Caution: This professional device needs to be installed by

qualiﬁed personnel only.

• Caution: speaker and power wires must be compliant with your

local low Voltage directive.

• 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 high sound levels may cause a

permanent hearing loss. Individuals vary considerably to sound

pressure level induced hearing loss but nearly everyone will

lose some hearing if exposed to high sound pressure levels for

a sufﬁcient amount of time. Therefore it is recommended that

all persons exposed to equipment capable of producing high

sound pressure levels, such as this ampliﬁer, 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.

Instruction manualMA35 & MA65

• Always operate the unit with the AC ground wire connected to

the electrical system ground.

• Set level controls on ampliﬁers all the way down during power-

up to prevent speaker damage if there are high signal levels at

the inputs.

• 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 Voltages.

• 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.

MIXING AMPLIFIERS

Wiring and Installation

Features

MA35/65 is a very compact, extremely versatile 100 Volt mixing

ampliﬁer, with three balanced microphone inputs with integrated

speech ﬁlters, paging priority switch, vox circuitry, built-in ding dong

chime and two line inputs on rca connectors. Stereo line inputs

are internally mixed to mono. Alternatively, you can connect your

mono sources to the left or right rca line in. MA35/65 have mains

power and emergency power connectors. MA35 can be emergency

powered from 12VDC power sources such as car batteries. MA65

can be emergency powered from industry standard 24VDC supplies.

Please note that the output level may vary up to 3 dB when the

emergency supply is in use.

For easy plug and play applications, use our MICPAT-D on mic input

1. It is possible to connect 2 pieces of MICPAT-D on mic 1 input.

Please note that MA35/65 is capable of generating hazardous

Voltages at the speaker outputs. All wiring should be done by a

qualiﬁed technician according to your local regulations. Always

turn off the power and disconnect the mains power cable during

maintenance or installation. For use in a 19 inch rack, you can use

the optional MA35/19 bracket, compatible with MA35 and MA65.

When installing the mixing ampliﬁer, make sure the unit’s top,

bottom and sides are not covered by other units. Allow some free

airﬂow around the unit and keep all ventilation holes free from

obstructions and dust!

Instruction manualMA35 & MA65

Operation

1. Power switch: ﬂip the switch to turn the mains power on and

off. This switch has no inﬂuence on the emergency power

supply.

2. Power/status indicator: the led lights up green when mains

or emergency power is present. When the led blinks red, you

are reaching the power limits and the limiter will be activated.

Make sure the led never turns red. Reduce the levels if

necessary, or insert a dedicated compressor/limiter/leveler in the

signal path, especially when using paging microphones.

3. Bass tone control: center position corresponds to a ﬂat

response. Turn left to decrease low frequency response, turn

right to boost low frequencies.

4. Treble tone control: center position corresponds to a ﬂat

response. Turn left to decrease high frequency response, turn

right to boost high frequencies.

5. Mic/line levels: these rotary controls act as volume controls.

6 5 4 3 2 1

MIXING AMPLIFIERS

Since this is a mixing ampliﬁer, the inputs are all mixed together,

the output level of each input is determined by the position of

these controls. The controls of inputs not in use should be set

to the 0 position to avoid excessive noise.

6. Mic 1 input: balanced microphone input on 6.3 mm TRS jack.

This connector is internally hardwired to the rear microphone

1 XLR and DIN5 connector. Use only one of these connectors.

Microphone 1 can have priority over all other inputs (including

the microphone 2 and 3 inputs) by activating the vox circuit.

When the paging contact is used, only the line inputs (music)

will be muted. Caution: do not connect an unbalanced

microphone to the balanced TRS or XLR connector when

phantom power is activated. This will result in a short circuit on

the phantom power supply.

Instruction manualMA35 & MA65

Connections

1 2 3 7

11 12 13 14 15 16 1710

1. Mains Voltage selector: to set the local Voltage. In case of

doubt, contact your dealer.

2. Mains socket/fuse holder: connect the IEC type power cord

here. The socket has an integrated 5 x 20 mm fuse holder.

Replace the fuse only with the same type and size. When the

fuse blows often, contact your nearest dealer.

3. Ground terminal: connect the ground of your audio cables here

if required. If hum occurs, use a ground loop isolator instead.

4. Emergency power supply connector: connect the emergency

DC supply here. 12 VDC for MA35, 24 VDC for MA65. Please

note that the output level may vary up to 3 dB when the

emergency supply is in use.

5. Speaker output: only one type of output can be used: 8 Ohms

or 70 Volt or 100 Volt. COM is the speaker ground or common

connection for all types of speakers. Maximum output power is

MIXING AMPLIFIERS

35 Watts (MA35) or 65 Watts (MA65). In 100 Volt this results in

a minimum load impedance of 286 Ohms (MA35) or 154 Ohms

(MA65). The low impedance output (8 Ohms) requires a load of

8 to 16 Ohms. Never use more than one output simultaneously.

This will result in continuous overloads and will cause excessive

heat dissipation.

6. Chime and mute contact terminals: by shorting these terminals,

the chime will sound (ﬁrst turn the chime level control to set

the loudness of the chime) and music will be muted. Never

apply any foreign Voltage to these terminals, in other words:

only connect potential free or “dry” contacts such as push

buttons or relay contacts.

7. Pre-amp out / amp in: if necessary, you can send the signal of

the preampliﬁer to an external device such as an equalizer or

compressor/limiter/leveller and feed the treated signal back into

the ampliﬁer via the poweramp input. When you don’t use this

feature, the RCA bridge must be placed, or no sound will be

heard.

8. REC out: To record paging messages etc, connect this output to

any recording device with line level input, or connect to another

power/mixing ampliﬁer.

9. Line input 4: stereo RCA input for line level signals from tuners,

CD players… The left and right signals are internally mixed to

a mono signal. You can also connect a mono source to the left

and/or right channel input.

10. Line input 3: stereo RCA input for line level signals from tuners,

CD players… The left and right signals are internally mixed to

a mono signal. You can also connect a mono source to the left

and/or right channel input. This input is internally hardwired to

microphone input 3. Use only one of these inputs at the time.

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