Martin Audio MA1.6s Specifications download pdf (Page 18)

Whilst the SMPS may sound complex it is actually very straightforward with

high reliability. The net result is good bass and fast response. Because the

supply is regulated, the power amplifier will produce the same power output

even if the AC line voltage falls by more than 20%!

Figure 13. Current-voltage characteristic of different power supply topologies.

1) Conventional power supply shows voltage drop due to internal resistance.

2) Regulated power supply used by MARTIN AUDIO.

3) Unregulated switch mode power supply with current limiting.

Traditional PSU's can behave erratically at low frequencies, particularly under

clip conditions with the rise in their output impedance producing uncontrollable

speaker cone movement. MARTIN AUDIO SMPS produces its rated power

output at all frequencies regardless of speaker demands and AC line

conditions.

Minimum Load Switch (MLS™)

Thanks to the regulated SMPS, the maximum power available for the output

stages can be adjusted without increased heat dissipation or efficiency loss.

This allows users to match the output power with the loudspeaker impedance.

Because the amount of power delivered into a load is dictated by its

impedance (at 2 ohms you use the least voltage but use the most current),

the MLS switch can be used to advantage to enable powers in excess of the

normal power rating to be produced.

Martin Audio – MA1.6 Power Amplifier

ENGLISH

0 5 10 15 20 25 30 35 40 45 50

Voltage [V]

Current [A]

CONTENTS

GUIDES

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 24 25

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Martin Audio MA1.6s Specifications Page 18