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3.2: BASS PORTS
The Precision monitors' bass ports are located on the back panel. You should keep the back panels at least 150mm (6") away from the nearest
wall surface to avoid an overblown bass sound. If you cannot avoid being close to the wall you may want to consider plugging the port tubes
on your loudspeaker with a closed cell foam-rubber plug, friction fit for a full seal. This will overdamp the speakers making them more suitable
for a 2Pi environment, for example against a wall.
3.3: EQUALISATION
Our feeling is that you shouldn't need to equalise monitors at all in a well designed monitoring environment, apparent variations in the monitor
response should be fixed through room design or placement. But we realise that equalisation is sometimes a necessary evil. If you have a choice
of equalisers for monitor applications, less is more. The fewer the number of filters, the better the equaliser will sound. A stereo five band
parametric is better than a stereo 15 band that is better than a stereo 1/3 octave. You may not realise that in all but one or two brands of 1/3-
octave equalisers, all 30 filters are in series. There is a minimum transit time through each filter of some 25 microseconds, plus just a bit of
decay time for each filter. Even with the equaliser set flat, it does not behave like a straight piece of wire in the time domain. If you don't need
to equalise your monitors, then don't hook an equaliser up to them at all.
A subtle bit of reduction in the mid bass where the console or table top will give you a rise, perhaps a bit of tailoring to taste here or there. As
a general rule for this application, you should never need more than 6dB of control range, and you should never see two adjacent filters with
more than 6dB of difference between them. Over equalisation can reduce system headroom, and introduce phase distortion resulting in greater
problems than cures. Always check out the result of equalisation by listening to well recorded vocals or speech.
4.0: PRECISION 6 AND 8 DIMENSIONS
220.0mm
8
5
/
"
8
356.0mm
14"
272.0mm
10
3
/
"
4
440.0mm
17
3
/
"
8
4
PRECISION 8
260.5mm
50.0mm
10
1
/
"
2"
4
107.9mm
4
1
/
"
4
186.0mm
7
3
/
"
8
287.5mm
50.8mm
11
3
/
"
2"
8
5.0: PERFORMANCE DATA
PRECISION 6
PRECISION 6
107.9mm
4
1
/
"
4
220.0mm
8
5
/
"
8
PRECISION 8
5
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