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installation chapter 2
16 Monitor One Mk2 Reference Manual
Power and Protection
What size power amp should you use?
Alesis recognizes that professional speakers need to be strong to survive, so
the Monitor One is designed to handle twice the power of most other near-
field monitors. This was achieved by using proprietary high-power drivers
and oversized crossover components, choices made principally to offer the
user an extended margin of safety. Therefore, an amplifier with a 150 watt
power rating into 4 ohms, like the Alesis RA-300™ Reference Amplifier, is
recommended for most monitoring situations. Higher or lower power
amplifiers may be used, depending on the size of the listening room and the
engineer's preference for normal working levels.
Be sure to verify that your amplifier is rated for 4 ohm speakers. Some
older amplifiers are not and may fail if overloaded. Alesis is not
responsible for any failures caused by the use of an improperly-rated
amplifier.
Also, there is no situation where an amplifier rated beyond 200 watts per
channel should ever be used because of the danger of damaging the Monitor
One. To do so is asking for trouble and will void your warranty. On the
other hand, if you use too small of a power amplifier, it is possible to damage
the Monitor One if you run it into heavy clipping and distortion in an effort to
get sufficient volume. This can lead to failures of both the amplifier and the
speaker, as the amplifier’s clipping generates high frequency energy sufficient
to damage the high frequency driver.
Should I install a fuse?
Alesis does not suggest the use of any external protection devices, but
considers such devices as fuses, lamps and/or thermal breakers safe to use,
so long as they do not cause failures or require modifications to the Monitor
One's construction which would void the warranty. Actually, many such
devices are generally considered ineffective and can additionally alter the
speaker's sound character, an undesirable trait for a studio monitor. The best
protection against speaker failure is to mix at a reasonable listening level.
®Alesis is a registered trademark of Alesis Corporation.
Monitor One Mk2, SuperPort, and RA-300 are trademarks of Alesis Corporation