Operation Manual

ENGLISH

LOUDSPEAKER CONNECTION

Use 1 output only, DO NOT MIX 100 / 70 V and 4 Ω CONNECTIONS!

70 / 100 V CONSTANT VOLTAGE OUTPUTS

• Each loudspeaker shall have a

line transformer with the input

voltage equal to the line voltage

(70 / 100 V).

• The loudspeaker total power

shall not be higher than the

ampliﬁer maximum power.

LOW IMPEDANCE OUTPUT (4 Ω)

• The loudspeaker total impedance shall not be lower than

4 Ω. Note: a total impedance equal to 4 Ω allows the

ampliﬁer maximum power delivery. A higher impedance

leads to a reduction of the power delivered by the ampliﬁer

(e.g. 8 Ω: approx. ½ power, 16 Ω: approx. ¼ power). An

impedance lower than 4 Ω overloads the ampliﬁer.

• Loudspeaker models shall be chosen by considering the

max. power (AM 2160: 160 W on a 4 Ω load; AM 2320:

320 W on a 4 Ω load) that the ampliﬁer can deliver.

• Loudspeaker line should be as short as possible; long

cables may need large wire cross-sections.

• Do not use, at the same time, both the low impedance

output (4 Ω) and the constant voltage output (70V or

100V), as this overloads the ampliﬁer.

100V0

POWER OUTPUT

100V70VCOM

100V0 100V0

100 V

70V0

POWER OUTPUT

100V70VCOM

70V0 70V0

70 V

POWER OUTPUT

100V70VCOM