operating instructions
Mono power amplifier EVOLUTION MA3.2S
2
Dear customer,
thank You for purchasing this AVM product. You own now a versatile, excellent sounding hifi
component. Before enjoying music, please read this manual carefully. After that You will know how
to use Your new AVM component in the optimal way.
Sincerely Yours
Your AVM-Team
Declaration of conformity (for EC only)
We herewith confirm, that the unit to which this manual belongs fulfills the EC rules necessary to
obtain the sign
the necessary measurements were taken with positive results.
AVM Audio Video Manufaktur GmbH, Daimlerstraße 8, D-76316 Malsch
Website: www.avm-audio.com, E-mail: info@avm-audio.com
Table of contents page
Preamble 2
Table of contents 2
1. Basic information 3
1.1 Mechanical construction & supply 3
1.2 Power amplifier 3
2. Operation of the MA3.2S 4
2.1 Overview 4
2.1.1 Front panel 4
2.1.2 Rear panel 4
2.1.3 Connection XLR-input 4
2.1.3 Connection Trigger-input 4
2.2 Placement and cooling 5
2.3 Power supply and initial check 5
2.4 Selecting operation mode 5
2.4.1 Auto 5
2.4.2 Permanent 5
2.4.3 Trigger 5
2.5 Remote control via audio cable 5
2.6 Connection to the preamplifier 6
2.7 Connection to the loudspeakers 6
2.8 Adjusting the tonal balance 6
3. Cleaning 7
4. If something doesn't work..... 7
5. Conditions of warranty (EC only) 8
6. Technical data 8
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1. Basic information
1.1 Mechanical construction & supply
The case is fully made of aluminium. The audio-connectors are all gold plated to minimize electrical losses
and provide long lasting perfect contacts.
A 25 VA toroidal transformer delivers the energy for the input stages and the protection circuitry. The power
amplifier has it's own power supply consisting of a 750 VA toroidal transfomer together with 40.000 µF of
capacitance.
The two independent supplies ensure that the input stages can work stable even if the power stage has to
deliver large quantities of power to the speakers. This ensures the stable, always well defined sound
reproduction of the MA3.2S under all conditions.
1.2 Power amplifier
The power amplifier stage of the MA3.2S is a powerful and efficient class-D amplifier. It is modulated in a
pure analog way and has an analog feedback loop from output to input. This ensures a practically load
independent frequency response and a very good damping factor. Independently of even critical load
conditions.
Further highlights are very low output noise, low distortion and an extremely good efficiency. Even when
delivering peak power levels to the speakers they deliver over 90% of the supplied energy to the speakers
and thus produce nearly no heat.
Safety circuits against overheating, short circuit and extreme ultra sonic frequencies ensure that should such
faults occur your amplifier and any loudspeakers connected to it are reliably protected.
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