FONESTAR MAZ-4250E Instruction Manual

MAZ-4250E

4-CHANNEL MULTICHANNEL
AMPLIFIER WITH MONO OUTPUT

EN Instruction manual

EN

e take this opportunity to thank you for buying this product.

W

We recommend you read the instruction manual before switching on the machine and follow the instructions
that are given. Keep the manual for future reference.

SECURITY AND THE ENVIRONMENT

ELECTRICAL SECURITY
Check that the current in the mains connection where the machine is to be installed corresponds to the
power supply of the machine.
To avoid damaging the equipment, electrical shocks, fire or physical injury when you connect or disconnect
the equipment from the power supply, pull the plug firmly out of the mains socket holding the plug, never the
cable.
Always do this with dry hands.
Keep the power supply cable far from sources of heat. Do not put heavy objects on top of it or change it.
Clean dust and dirt off the power supply cable regularly.
Do not open the machine; you could get an electric shock.

CAUTION
While installing the machine, make sure it is switched off and unplugged.
Do not open the machine. Touching the internal parts is dangerous and you could receive an electric shock.
The machine must not be splashed or dripped on. Never place recipients with liquid inside on the machine.
Do not place anything inside the machine.

LOCATION
Place the equipment on a horizontal surface with enough space around it to allow ventilation.
Avoid direct sunlight, heat sources and excessive dust.

Do not place the machine near magnetic fields or static electricity.
Do not use surfaces which vibrate or receive impact.
Do not pile machines on top of one another.

VENTILATION
Never block or cover the ventilation slits on the machine.
Do not expose it to direct sunlight or place it near sources of heat.

PERIODS OF INACTIVITY
When the machine is not going to be used for a long period of time, disconnect it from the mains.
If you are using an adapter, take into account that it will continue using electricity even if the machine is
switched off. If it is not going to be used for a long period of time, disconnect it from the mains.

THE ENVIRONMENT
To save energy, switch the machine off when you are not going to use it for a long time. The machine could
contain substances that are harmful to the environment or human health. To minimize the effect of these
substances the machine must be correctly managed and recycled when you decide to dispose of it.
When you dispose of it remember: it cannot be thrown into a conventional rubbish bin.
If it contains or uses batteries, these must be disposed of separately.
The machine (without batteries) must be disposed of correctly. Put it in a container specially intended for the
collection of electronic and electrical appliances, at the dump or hand it over to the dealer when you purchase
similar equipment, so that the dealer can dispose of it correctly (at no added cost).

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SIGNIFICANCE OF THE SYMBOLS ON THE MACHINE*

The symbol formed by the expression “Class 1 laser product” written in a rectangle
indicates that visible or invisible laser radiation could be produced. Avoid direct exposure
to the laser.

The symbol formed by a ray of lightening inside a triangle shows that the machine has
connection terminals or a circuit with areas with a current which could cause an electric
shock, even in normal working conditions.

The symbol formed by an exclamation mark in a triangle shows that the instruction manual
must be referred to for information on how the machine works and its use.

The symbol formed by one square inside another square shows that the machine has
double electrical insulation.

The European Community symbol shows that the machine complies with the current
European Union legislation, as well as its transposition to local legislation.

The symbol of a rubbish bin crossed out and over a horizontal line shows that when the
product is disposed of it must be done properly, placing it in a special selective electronic
and electrical equipment container or through a dealer when purchasing a similar product,
at no additional cost. It also shows that the machine was put on the market after 13th
August 2005 (European Community Directive 2002/96/CE of Electrical and Electronic
recycling, and its Spanish equivalent R.D.208/2005).

EN

In accordance with what is set out in the aforementioned decree, FONESTAR is registered
in the RAEE (Registro de Aparatos Eléctricos y Electrónicos) in a special section REI
(Registro de establecimientos Industriales), with the entry number 001851.

The symbol RoHS (Restriction of Hazardous Substances) shows that the product has been
designed and manufactured restricting the use of certain dangerous material(Directive
2011/65/EU on the restriction of certain dangerous substances in electrical and electronic
appliances, and its transferal to the Spanish regulations, R.D. 219/2013).

*It is possible that some of these symbols do not appear on the machine.

EXEMPTION OF LIABILITY

The characteristics of the equipment and the content of the manual can change without forewarning.
FONESTAR, S.A. does not assume responsibilities regarding the inappropriate use of the equipment or the
information supplied in this instruction manual, and specifically disclaims any implied liability for marketability
or fitness for any other use.

All rights reserved by FONESTAR, S.A.

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EN

DESCRIPTION

Multichannel amplifier with four output channels with independent volume control, 4 x 300 W max. 4 x 250
W RMS. 4-8 Ω low impedance output and 100, 75 and 25 V high impedance lines. Suitable for P.A. and

udio applications with different speaker zones which need independent volume control.

a
The preamp and mix stage has 4 balanced mic. inputs or selectable lines with Phantom power supply and

2 auxiliary line inputs.
Chimes and siren with volume control and TEL. PAGING telephone switchboard input.
Priority system in inputs, with maximum priority in the TEL. PAGING input and INPUT 1 through signal level.

And priority in INPUTS 2, 3 and 4 through contact closure.
It also has LED indicators to see how it is working and the state of the output stage for each channel; LED

protection, signal peak, input signal and operating indicator.
Protection circuits for temperature, overcharge, overload, surge or short-circuit. Forced ventilation with

adjustable speed depending on the internal temperature.

CONTROLS AND FUNCTIONS

FRONT PANEL

1.- CH1 to 4 (BASS, TREBLE, MASTER): output channel controls, BASS tone controls, TREBLE tone
controls and MASTER output volume control.

2.- CH1 to 4 (PROT, CLIP, SIG, ON): LED output channel indicators.
PROT lights up when an anomaly that has been produced by temperature, overcharge, surge or short-circuit

is detected. When protection is activated, the output signal is cut off.
CLIP lights up when the input signal to the amplification stage is very high and distorted.
SIG lights up when there is a signal in the amplification stage input.
ON lights up if the amplification stage of the channel works correctly.

3.- INPUT 1 to 4: volume controls for INPUTs 1 to 4.

4..- AUX 1 and 2: volume controls for inputs AUX 1 and AUX 2.

5.- POWER: power switch with LED indicator.

6.- CHIME: volume control and button for activating the musical chimes.
NOTE: to play the musical chimes, the CHIME PRIORITY contacts on the back panel must be closed.

7.- SIREN: volume control and button for playing the siren signal.

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EN

ACK PANEL

B

1.- SPEAKER OUTPUT TERMINALS: 4-8 Ω low impedance output and 100, 75 and 25 V high impedance lines.

2.- AC power supply socket.

3.- PRE OUT/AMP IN: output connectors from the PRE OUT and input connectors to the AMP IN. Both
connectors are connected by an external bridge to allow the signal to pass.

4.- AUX 1 and AUX 2: auxiliary line inputs.

5.- INPUT 1 PRIORITY: priority depending on the level in INPUT 1. On closing these contacts, the priority is
activated in INPUT 1 depending on the signal level. In this way when a signal is detected in INPUT 1 the rest
of the inputs will be weakened.

6.- GND: earth. This screw lets you connect the equipment to earth, if the 230 V AC connection used has not
already got one.

7.- CHIME PRIORITY: musical chimes and priority for INPUTs 2 to 4. On closing these contacts, the musical
chimes will be played if they have previously been activated with the CHIME button on the front panel. Priority
is also activated in INPUTs 2 to 4, weakening the AUX 1 and AUX 2 inputs.

8.- SIREN: when these contacts are closed, the siren goes off.

9.- TEL. PAGING and VOL: signal input for the telephone switchboard with Euroblock connector and VOL
control.

10.- INPUT 1 to 4: balanced mic./line inputs with Combo connector (Cannon/XLR and 6.3 mm stereo jack)
and balanced Euroblock. The input is adjusted depending on the characteristics of the signal using the
DIP-4 switch.

– Input sensitivity is selected using switch 1 (Line/Mic), for microphone signal or line signal.
– Switch 2 (Phase) inverts the phase of the input signal. This is used to avoid cancellations and to correct
phase inversions resulting from the connection, specially for unbalanced signals.

- On activating switch 3 (High Pass Filter), a high pass filter is inserted in the signal path to reduce low
frequency noise.

- Switch 4 (48 V Phantom) activates phantom power for condenser microphones (in Cannon/XLR and
Euroblock connector).

11.- Ventilation slits. The speed of the fan is variable depending on the temperature.

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EN

CONNECTION

onnect the speakers to the speaker output. Use the 4-8 Ω low impedance output or the 100, 75 or 25 V high

C
impedance lines, depending on the type of speakers that you are going to connect. Do not use both types
of output at the same time.
If you use the low impedance output, you must connect the loudspeakers in a series/parallel circuit so that
the impedance charge of the speakers is the same as the amplifier impedance, and the power supplied by
the amplifier must not exceed what is withstood by the speakers.
If you use the 100, 75 or 25 V high impedance line output, all the speakers must be connected in parallel and
the sum of the power of all the speakers must not exceed the power supplied by the amplifier.
Once the connections have been made depending on your needs, connect the equipment to the mains and
switch them on. After use, do not forget to switch them off and disconnect the equipment from the mains.

Example of connection to 100 V high impedance connection

INSTRUCTIONS FOR USE

Before switching the amplifier on, check that the output volume controls are at their minimum. Switch on the
rest of the audio system, and finally switch on the power amplifier and adjust the output volume.
To switch the system off, adjust the amplifier output volume and switch it off. Finally, switch off the rest of
the audio system.

PROTECTION

The amplifier has temperature, overcharge, overcurrent, surge and short-circuit protection.
When protection is activated, the LED PROT indicator lights up on the front panel, and the output signal is
cut off. In this case, switch off the power amplifier, revise the cause and leave the equipment for a while
before switching it on again.

MUSICAL CHIMES

The musical chimes can be used in two ways:

-To reproduce musical chimes from a distance (from a microphone). Firstly, you must activate the musical
tones on the front panel using the CHIME button. Afterwards, to reproduce the musical tones, the CHIME
PRIORITY contacts on the back panel must be closed (using the button or the button on the microphone).
This will also activate priority in INPUTs 2 to 4, weakening inputs AUX 1 and AUX 2.

-To reproduce the musical chimes from the amplifier, the CHIME PRIORITY contacts on the back panel
must be closed first. This will also activate priority in INPUTs 2 to 4 weakening the AUX 1 or 2 inputs. Then
you can play the musical chimes using the CHIME button on the front panel.

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EN

RIORITY IN THE INPUTS

P

The priority function in the inputs reduces the level of the inputs with less priority so that the message
transmitted by the inputs with priority can be heard clearly.
The inputs with maximum priority are TEL. PAGING and SIREN. When there is a signal in the TEL. PAGING
input or the SIREN is activated (by pressing the button on the front panel or closing the SIREN contacts on
the back panel) the level of the rest of the inputs is automatically reduced, INPUT 1 to 4 and AUX 1 and 2.
INPUT 1 is the second level of priority. To enable the priority function through signal level in INPUT 1, the
INPUT 1 PRIORITY contact on the back panel must be closed. In this way when a signal is detected in INPUT 1,
the rest of the inputs, INPUT 2 to 4 and AUX 1 and 2, will be weakened.
The last priority level is in the CHIME signal and INPUTs 2 to 4. This priority is activated by closing the CHIME
PRIORITY contacts on the back panel and weakens the AUX 1 and 2 inputs.

SPECIFICATIONS

MAZ-4250E

CHARACTERISTICS 4 output channels with independent volume control, phantom power,

priority, chimes and siren.

POWER 4 x 300 W maximum, 4 x 250 W RMS

RESPONSE 50-17,000 Hz ±3 dB

DISTORTION Harmonic <0.5 %

INPUTS 4 balanced mics./lines, combo (XLR and 6.3 mm jack) and Euroblock 600 Ω

2 mV and 47,000 Ω 250 mV, switchable
2 auxiliaries, 2 x RCA 47,000 Ω 250 mV
1 amp in, RCA 10,000 Ω 1 V
1 tel. paging, Euroblock 600 Ω 100-300 mV

OUTPUTS 1 Pre out, RCA 600 Ω 1 V

TONE CONTROLS Bass and treble per channel

VOLUME CONTROLS Inputs 1 to 4, aux 1 and 2, chimes, siren and general volume through

each output channel

PHANTOM 48 V in mics. 1 to 4, selectable

PRIORITY Tel. paging input level priority and siren with push button or contact closure

Input 1 input level priority, selectable
Musical announcement tones with push button and contact closure

OUTPUT IMPEDANCE 4 output channels: 4-8 Ω and 100, 70 and 25 V high impedance lines

POWER SUPPLY 230/115 V AC, 1,500 maximum

DIMENSIONS 480 x 133 x 480 mm depth. 3 U 19” rack

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DECLARATION OF SUITABILITY

The Amplifier model MAZ-4250E complies with the European Community directives 89/336/EC
on Electromagnetic Compatibilty.

Santander, 10th September 2014

Ing. Tec. Dpto. Comercial

Juan Vallejo

WARRANTY

This product has been tested and has passed the corresponding quality control prior to being put on the market.
FONESTAR guarantees the suitability of the product for its specified use during a period of 2 years from the delivery date
and commits itself to repair or substitute the goods as expressed in the Spanish law ‘La Ley General para la Defensa de los
Consumidores y Usuarios, Real Decreto Legislativo 1/2007 16 Noviembre.

The lack of conformity in the first six months after purchase, due to a manufacturing defect, will be rectified with no more
than showing the proof of purchase. After six months FONESTAR reserves the right to demand proof of the product being
sold with that problem.

This warranty does not include damage produced by: inappropriate use or negligence, accidents, worn out parts due to use,
breakages, burns, spilt liquids or other substances, excessive humidity, battery deterioration and internal manipulation of the
device, the software or its components by unauthorized persons, and in general any use that is unrelated to the nature and
purpose of the product.

If any service is needed during the warranty period because of lack of conformity, please contact the business or distributor
where the product was purchased in no more than 2 months after being conscious of the problem. It is only necessary to
contact FONESTAR if it is impossible or imposes an undue burden for them to solve it.

To benefit from this warranty it is necessary to show the proof of purchase with the date clearly visible, with no corrections or
crossing out.

This document adds information, and never decreases the consumers’ rights, which in all cases are protected by the Spanish
law ‘La Ley General para la Defensa de los Consumidores y Usuarios, Real Decreto Legislativo 1/2007 16 Noviembre.

FONESTAR is a member of ECOEMBALAJES ESPAÑA, S.A. “ECOEMBES”, with number 03497 and all our
products carry the symbol, backed by our membership and subscription to the above mentioned
organization with the recycling and subsequent management of our packaging.

FONESTAR S.A. - NIF A28780443 - Apartado 191 - 39080 - Santander, Cantabria, (Spain)

www.fonestar.com