Martin Audio MA4.2s User Manual

Martin Audio – MA4.2s (ETL) Amplifier
ENGLISH
2
2 APPROVALS
This equipment is tested and approved to the U.S. safety standard ANSI/ UL 6500 and Canadian safety standard
CSA E60065-00 by ITS ETL SEMKO they are a Nationally Recognized Testing Laboratory (NRTL).
The ETL Listed Mark is recognized by local inspectors and
Authorities Having Jurisdiction (AHJs) throughout North
America and also in some areas of South America. ITS ETL
SEMKO is a NRTL recognized by OSHA (Occupational Safety
and Health Administration
), the ETL Listed Mark is an accepted
alternative to UL and, as such, inspectors and AHJs are
required by law to recognize, acknowledge, and accept the
mark as proof of product compliance.
3 WARNINGS
3.1 Explanation of graphical symbols
The lightning symbol within a triangle is
intended to alert the user to the presence of
lethal voltages within the amplifier that are of
sufficient magnitude to constitute a risk of electric
shock to humans.
The exclamation mark within a triangle is
intended to alert the user to the presence of
important operating and service instructions in the
literature accompanying the product.
3.2 WARNING
To reduce risk of fire or electric shock, do not expose
this apparatus to rain or moisture.
3.3 CAUTION
To reduce the risk of fire or electric shock, do not
remove screws. There are no user-serviceable parts
inside this amplifier. Refer servicing to qualified
personnel only.
3.4 Important Safety Instructions
Before using your amplifier, please read the operating instructions and safety suggestions.
1. Keep this manual for future reference.
2. Do not operate the amplifier if liquid ingress is suspected.
3. Do not stand water or any other liquid on, or near the amplifier.
4. Do not use this amplifier near water. Do not operate the amplifier if wet or standing in liquid.
5. Clean only with dry cloth.
6. Do not block the air intake or exhaust ports. Always install the unit in accordance with the instructions.
7. Do not operate the amplifier on or near any source of heat, such as radiators, lighting dimmer racks, or
other apparatus that produce heat.
8. Always operate the amplifier with the chassis ground wire connected to the electrical safety earth. Do not
tamper with the electrical safety earth, it is provided for your safety. A grounding type plug is fitted; this
has two pins and a third grounding prong. If the plug provided does not fit your mains outlet, consult an
electrician or a competent person to replace the fitted plug. See page 8 section 6.3 for wiring colour code
9. Connect only to AC power outlets rated 230 - 240V (or 100 - 120 V), 50-60Hz.
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All material © 2007. Martin Audio Ltd. Subject to change without notice.
All manuals and user guides at all-guides.com

Martin Audio MA4.2s Specifications

Power Output

max output power at 8 ohms per channel	1300 W
max output power at 4 ohms per channel	2300 W
max output power at 2 ohms per channel	2900 W
max output power at 8 ohms bridged	4600 W
max output power at 4 ohms bridged	5800 W

Voltage

max output voltage at 8 ohms load	102 Vrms
peak voltage, no load	145 V
operation voltage	130-270 V
full output power	180-260 V
min start voltage	175 V

Current

peak inrush current	5 A
quiescent power no load	0.6 A rms
1/8 of full power at 4 ohms/230V	6 A rms
1/3 of full power at 4 ohms/230V	14 A rms
at full power at 4 ohms/230V	26 A rms

Weight and Dimensions

width	483 mm
height	88 mm
depth	393 mm
weight	10 kg