FONESTAR MX-848 Instruction Manual

MX-848

MIXER/PREAMPLIFIER

INSTRUCTION MANUAL

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

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 2012/19/EU of Electrical and Electronic
recycling, and its Spanish equivalent R.D.219/2013).

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.

*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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DESCRIPTION

- Mixer/preamplifier. Stereo and mono output.

CONTROLS AND FUNCTIONS

FRONT PANEL

1.- MIC-LINE CH 1-6: gain controls for channels 1 to 6.
2,- SIGNAL CH 1-6: LED signal indicators for channels 1 to 6.

3.- LINE CH 7-12: gain controls for channels 7 to 12.
4,- SIGNAL CH 7-12: LED signal indicators for channels 7 to 12.

5.- MIX: gain control for the MIX output CH 1-CH 6.

6.- Switch for sending the signal to channels 1 to 6.
If the switch is in the ON position, the signal from channels 1 to 6 will only be sent to the MIX CH1-

CH 6 output.
If the switch is in the OFF position, the signal from channels 1 to 6 will be sent to the MONO OUT and

STEREO OUT outputs.

7.- EQ: control wheels that regulate the frequency response in the output signal. They strengthen or weaken
the bass (LOW), mid (MID) and treble (HIGH) frequencies ±15 dB.

8.- MONO: gain control for the MONO OUT output.

9.- LED indicators for the input signal level.

10.- MASTER: general volume control for all outputs.

11.- LED indicator for mixer/preamplifier power.

12.- ON/OFF: equipment on/off switch.

BACK PANEL

1.- Power supply cable input.

2.- DC IN 24 V: 24 V DC power supply terminals. For the amplifier to work with 24 V DC, batteries,
emergency power supply system, etc. Make the connection to the - negative and + positive terminals
with 2.5 mm

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section cable .

3.- STEREO OUT: balanced stereo master output, 2 x XLR connectors.

4.- MONO OUT: balanced mono master output, 6.3 mm jack connector.

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5.- MIX CH 1-CH 6: balanced mono mix out output, 6.3 mm jack connector.
The signal from channels 1 to 6 will be sent to this output when the sending switch on the front panel

of the equipment is in the ON position.

6.- LINE OUT: line level auxiliary output, 2 x RCA connectors.

7.- LINE INPUTS: auxiliary line level inputs, 2 x RCA connectors.

8.- MIC/LINE INPUTS: microphone/line inputs that use a combo connector (XLR and 6.3 mm stereo jack),
that accept balanced and unbalanced microphone signals of 30-600 Ω and balanced electret condenser
microphones that need 18 V phantom power, present in pins 2 and 3 of the XLR connector. They accept
balanced or unbalanced line level signals from mixers, audio players, etc.

Input 1 has priority function through selectable signal level. cancelling all other inputs to give a
preference to paging, emergencies, etc.

9.- LINE/PH/MIC: input sensitivity and 18 V phantom switches. These switches have 3 positions:
LINE: in this position, audio sources such as preamplified microphones, CD players, etc, can be

connected to inputs 1 to 6.
MIC: in this position, low impedance 30-600 Ω dynamic microphones can be connected to inputs 1 to

6.
PH: in this position, electret condenser microphones that need 18 V phantom power can be connected

to inputs 1 to 6.
Use this switch with the volume at its minimum to avoid noise.

10.- MIC 1 PRIORITY LEVEL: control for activating/deactivating priority in input 1. Turn the control clockwise
to maximum and the rest of the inputs will automatically weaken when they detect a signal in input 1.
Turn it anti-clockwise and the priority function will go to its minimum.

CONNECTION

- Make connections with the mixer/preamplifier and all other components in the installation switched off and

disconnected from the mains.

- Connect the desired audio equipment or microphones to the corresponding inputs.

- If you want to connect a microphone with priority, connect it to input 1.

- Check that the input and output volume controls are at their minimum.

- Power the mixer/preamplifier mod. MX-848 using the AC mains connection or an external 24 V DC power

source.

- Once the connections have been made in accordance with your needs, connect the equipment to the

mains and switch it on. After use, do not forget to switch it off and disconnect it from the mains.

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BLOCK DIAGRAM

SPECIFICATIONS

MX-848

CHARACTERISTICS Mixer/preamplifier.

Microphone input with paging priority.
Phantom power supply.
LED output level indicators.

INPUTS 6 balanced mics./lines, combo (XLR and 6.3 mm jack), 1500 Ω 7.7

mV y 10 000 Ω 775 mV switchable
3 stereo auxiliaries, 2 x RCA, 10 000 Ω 775 mV

OUTPUTS 1 balanced stereo master, XLR 120 Ω 2.5 V maximum

1 balanced mono master, 6.3 mm jack, 120 Ω 2.5 V maximum
1 balanced mono mix out, 120 Ω 6.3 mm jack
1 line out, 2 x RCA 1000 Ω 775 mV

CONTROLS Tone: master output bass, mid and treble

Volume: inputs 1 to 12 and general volume (stereo and mono master)

RESPONSE 10-20 000 Hz

DISTORTION Harmonic: < 0.05% at 1 kHz

S/N RATIO Microphones > 70 dB

Auxiliary/Line > 103 dB

PHANTOM 18 V in mics. 1 to 6, selectable

PRIORITY Mic. 1 depending on signal level, selectable

POWER SUPPLY 230 V AC, 18 W and 24 V DC, 500 mA

DIMENSIONS 483 x 44 x 220 mm depth. 1 U 19" rack

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DECLARATION OF CONFORMITY

FONESTAR SISTEMAS S.A.

Polígono de Trascueto s/n
39600 Revilla de Camargo, Cantabria (Spain)

Declares, under its responsibility, that the following equipment:

Description: Mixer/preamplifier
Brand: FONESTAR
Model: MX-848

complies with the European Community directives 2004/108/CE on Electromagnetic Compatibility,
2006/95/CE on Low Voltage and 2011/65/UE on the restriction of certain dangerous substances in
electrical and electronic appliances (RoHS).

Santander, 30th January 2015

Juan Vallejo

Technical Engineer, Sales Department

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

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