Advertisement
Spcaker
Installrtlon
For the tectmically-minded, here is an approxirnate chart of SPL levels for various
seftings of the INPUT LEVEL control, measured at 1 meter from two speakers
simultaneously (all settings, especially near the extremes of the range, are subject to a
plus or minus 2 dB error):
O(MIN)
- dB SPL
-- dB SPL
1
2
57.0
69.0
J
53.5
75.5
4
6.2
80.2
5
7L.O
83.0
6
73.0
85.0*
78.0
90.0
8
835
v5.5
9
85.5*
97.5
10 (MAX)
85.5
98.5
+ denotes recommended setting for control
room use
Avoiding
damage
The-best protection against speaker failure is to mix at a reasonable listening level.
With a +4 dBu input and the input level control set to "5,,, the Ml Active speakers
produce a sound pressure level (SPL) of 85 decibels at 1 meter, which is a good
working level for mixing.
At maximum
output before clipping, they can generate
peak levels > 118 dB SPL at one meter - a level which may cause hearing lbss after
prolonged exposure. While the biampli.:fied design of the M1 Active avoids the
common "blown tweeter" problem of conventional
designs (when a broadband
amplifier clips on a bass note, it sends unusually
high energy to the tweeter, which
tries-to reproduce the square wave), it is not im'ulnerable.
If you need higher power
lev9l9, y9u are not using the speaker in a near-field application.
For extremelyloud
mid-field
and far-field monitoring,
we recorunend
the Alesis Monitor Two speaker
with a 3O&watt per channel amplifier.
Many studios will check recordings on botL
systems, altemating to avoid ear fatigue and to gain perspective on the mix.
ffiIACilUI
Rffi
MATUAL
a
Advertisement
