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SM120
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1 947602
CAUTION: To reduce the risk of electric shock,
Do not remove cover.
No user serviceable parts inside.
Refer servicing to qualified service personnel.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
This symbol indicates that dangerous
voltage constituting a risk of electric
shock is present within this unit.
This symbol indicates that there are
important operating and maintenance
instructions in the literature accompanying
this unit.
Issue 4
SM120
RACK MOUNT 120 WATT AMPLIFIER
INTRODUCTION
These instructions contain the specifications and
information necessary to install, operate and
maintain the SM120, 120 Watt Mixer-Amplifier.
The SM120 provides up to 120 Watts of audio
power for voice paging or background music
systems.
SPECIFICATIONS
Access Methods
Paging and Sound Reinforcement Systems
Stand Alone Background Music Systems
Features
Active mix or Priority override on inputs
(override is voice operated)
Rack Mount
Mic 1/Tel on Input 1, plus 3 standard
MIC/AUX inputs
Volume control for each input
Master Volume, Bass and Treble Controls
Overload limiting circuit protection
Screw terminals for all connections
Power "ON" indicator
Clipping and Fault indicators
8 Ohm, 25 and 70 Volt selectable output
Tone generator (Warble or Continuous)
Optional external volume control
Dimensions and Weight
17.0" W x 12.0" D x 1.75" H
(43.23cm W x 30.5cm D x 4.4cm H)
Weight: 5.1 lbs. (2.3 kg)
Nominal Specifications
Wattage Output 120 Watts Peak
Type Outputs 8 Ohm or 25V or 70V
Frequency Response 20 to 20kHz +/-2dBm
Distortion < 2% @ 1kHz Rated Output
Number of Inputs 4 (1 Mic/Tel Line,
3 Mic/Aux)
Voice Switch Sensitivity 31dBm
Mic Input Impedance 600 Ohms Balanced
Mic Input Sensitivity 1.0mVRMS
Tel Line Input Impedance 600 Ohms
Tel Line Sensitivity 70mVRMS
Aux Input Impedance 10K Ohms
Aux Input Sensitivity 200mVRMS
Line Out Impedance 10K Ohms
Line Out Level 1VRMS
Nominal Power Requirements
Input Voltage: 85-265VAC
Current @ 120VAC: 0.28A Typical
Environment
Temperature 0 to +40° C +32° to +104° F
Humidity 0 to 85% non-precipitating
Precautionary Designations
WARNING-To Reduce The Risk Of Fire Or
Electric Shock. Do Not Expose This
Apparatus To Rain Or Moisture.
• AVERTISSEMENT - Afin de réduire les
risques d'incendie ou de décharge
électrique, évitez d'exposer le système à
la pluie ou à l'humidité.
• Apparatus shall not be exposed to
dripping or splashing and no objects filled
with liquids, such as vases, shall be
placed on the apparatus.
• L’appareil ne doit pas être exposé à des
égouttements et éclaboussures et aucun
Objet Rempli de liquide, comme vase, ne
doit être place sur l’appareil.
2 947602
INSTALLATION
FCC Information
This equipment has been tested and found to
comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide
reasonable protection against harmful
interference when the equipment is operated
in a commercial environment. This
equipment generates, uses and can radiate
radio frequency energy and if not installed
and used in accordance with the instruction
manual, may cause harmful interference to
radio communications. Operation of this
equipment in a residential area may cause
harmful interference in which case the user
will be required to correct the interference at
his own expense.
General Mounting Information
A) Elevated Operating Ambient - If installed in a
closed or multi-unit rack assembly, the operating
ambient temperature of the rack environment may be
greater than room ambient. Therefore, consideration
should be given to installing the equipment in an
environment compatible with the maximum ambient
temperature (Tma) specified by the manufacturer.
B) Reduced Air Flow - Installation of the equipment in
a rack should be such that the amount of air flow
required for safe operation of the equipment is not
compromised.
C) Mechanical Loading - Mounting of the equipment
in the rack should be such that a hazardous condition
is not achieved due to uneven mechanical loading.
D) Circuit Overloading - Consideration should be
given to the connection of the equipment to the
supply circuit and the effect that overloading of the
circuits might have on overcurrent protection and
supply wiring. Appropriate consideration of equipment
nameplate ratings should be used when addressing
this concern.
E) Reliable Earthing - Reliable earthing of rack-
mounted equipment should be maintained.
Particular attention should be given to supply
connections other than direct connections to the
branch circuit (e.g. use of power strips).
F) Equipment only suitable for mounting at heights
less than or equal to 2m (6.56’).
DESIGN
The SM120 amplifier may be used to operate 8
Ohm, 25 Volt or 70 Volt speakers and horns.
The SM120 will actively mix all inputs or will
provide priority inputs. If priority input is
selected, the Mic/Tel input will override all inputs
that are active (refer to Table 1 in the Operation
Section for the override sequence). When the
SM120 is in the priority mode, the switching is
voice operated (no contacts are required).
The SM120 amplifier has a master volume
control plus a separate volume control for each
input. Bass and treble controls are also
provided.
The mixer-amplifier contains a limiting circuit for
protection against short circuits or impedance
mismatches. The unit will shut down in the
event of a trouble condition and reactivate
automatically when the condition is corrected.
INSTALLATION
General
Figure 1 shows volume control locations. Figure
2 shows output terminal strips and switches on
the back of the amplifier as well as typical
connections to the mixer-amplifier.
All connections on the back of the SM120 are
accessed by removing the rear cover. Replace
the cover after connections have been
completed.
IMPORTANT SAFETY INFORMATION
CONSIGNES DE SÉCURITÉ IMPORTANTES
1. Read these instructions.
Lisez ces instructions.
2. Keep these instructions.
Conservez ces instructions.
3. Heed all warnings.
Respectez tous les avertissements.
4. Follow all instructions.
Suivez toutes les instructions.
5. Do not use this apparatus near water.
Ne pas utiliser cet appareil près de l'eau.
6. Clean only with dry cloth.
Nettoyer avec un chiffon sec.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s
instructions.
Ne pas bloquer les ouvertures de ventilation. Installer formément aux instructions du
fabricant.
8. Do not install near any heat sources such as radiators, heat registers, stoves or other
apparatus (including amplifiers) that produce heat.
Ne pas installer à proximité de sources de chaleur telles que radiateurs, registres de
chaleur, poêles ou autres appareils (y compris les amplificateurs) produisant de la chaleur.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug
has two blades with one wider than the other. A grounding type plug has two blades and a
third grounding prong. The wide blade and the third prong are provided for your safety. If
the provided plug does not fit into your outlet consult an electrician for replacement of the
obsolete outlet.
Ne pas contourner le dispositif de sécurité de la fiche polarisée ou de mise à la terre. Une
fiche polarisée possède deux lames dont une plus large que l'autre. Une fiche de terre a
deux lames et une troisième broche de mise à la terre. La lame large et la troisième
broche sont fournies pour votre sécurité. Si la fiche fournie ne rentre pas dans votre prise,
veuillez consulter un électricien pour le remplacement de la prise obsolète.
10.Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles and the point where they exit from the apparatus.
11.Only use attachments/accessories specified by the manufacturer.
N'utilisez que des fixations / accessoires spécifiés par le fabricant.
12. Use only with the cart, stand, tripod, bracket or table specified
by the manufacturer or sold with the apparatus. When a cart is
used, use caution when moving the cart/apparatus combination
to avoid injury from tip-over.
Utilisez uniquement avec le chariot, stand, trépied, support ou table spécifié par le
fabricant ou vendu avec l'appareil. Quand un chariot est utilisé, Soyez prudent lorsque
vous déplacez l'ensemble chariot / appareil pour éviter des blessures dues au
renversement.
13. Unplug this apparatus during lightning storms or when unused for a long period of time.
Débranchez cet appareil pendant les orages ou lorsqu'il n'est pas utilisé pendant une
longue période de temps.
14. Refer all servicing to qualified service personnel. Servicing is required when the
apparatus has been damaged in any way. Such as when the power supply cord or plug is
damaged, liquid has been spilled, objects have fallen into the apparatus or the
apparatus has been exposed to rain or moisture and does not operate normally or has
been dropped.
Confiez toute réparation à un personnel qualifié. Une réparation est nécessaire lorsque
l'appareil a été endommagé de quelque façon. Par exemple lorsque le cordon
d'alimentation ou la fiche est endommagé, du liquide a été renversé, si des objets sont
tombés dans l'appareil ou le appareil a été exposé à la pluie ou à l'humidité et ne
fonctionne pas normalement ou s'il est tombé.
Produktspecifikationer
| Varumärke: | Valcom |
| Kategori: | ej kategoriserat |
| Modell: | SM120 |
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