Madrigal Imaging Dual Monaural Power Amplifier User Manual download pdf (Page 13)

Power connection

After making your loudspeaker connections, apply power to your

preamplifier and allow it to stabilize. (Mark Levinson preamplifiers, for

example, require about one minute to stabilize.)

Connect the AC power cord (included in the accessory pack) to the

AC connector on the rear panel of the Nº29, then to the AC mains

outlet.

Connecting the

AC power cord

To Nº29 To AC mains

1 = Line (hot)

2 = Neutral

3 = Earth ground

Figure 8: AC power cord

polarity

Turn on the Nº29 by setting the power switch on the front panel to the

"|" (on) position.

Note: You may hear a transient "click" or "pop" through your

speakers a few seconds after you operate the Nº29's power

switch. This noise is normal and won't damage your speakers.

The Nº29 won't achieve its sonic potential right away — its sonic

performance is close to the optimum after about 100 hours of use. For

the best performance, you may leave your Nº29 powered at all times,

except when you won't be using it for a long period (see "Important

Safety Instructions").

The Nº29 is designed to be "power-cycled" (that is, turned on and off)

without affecting its longevity. After the amplifier is turned on after

being left unpowered, allow for about one hour of warmup before

expecting optimal sonic performance.

Under certain conditions (an electrical malfunction or inadequate

ventilation), the Nº29's protection circuitry may activate, turning off the

amplifier before damage results. When this happens, the power switch

on the front panel will be set automatically to the "O" (off) position.

After a brief cooling period, you can reactivate the amplifier by

setting the power switch to the "|" (on) position.

If this occurs regularly during normal use, see your Mark Levinson

dealer immediately.

Note: While the protection circuitry is active, the power switch

won't stay in the "|" (on) position. If, after the amplifier has

cooled, the power switch still won't engage, the protection

circuitry still detects a malfunction; see your Mark Levinson

dealer immediately.

Performance tips

Protection circuitry

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Madrigal Imaging Dual Monaural Power Amplifier User Manual Page 13

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