5)HighFrequencyAdjustments
DidYouKnow?The High Freq switch Lä allows you to make your EX66
monitors sound more bright or more dark, depending on
your preference. Technically speaking, the three-position switch
activates a gain/attenuation circuit in the tweeter channel. It
offers 2dB of boost or cut starting at the 2.56kHz crossover
pointsimilar in concept to the high-frequency adjustment
function found in the classic BBC monitors.
We recommend you start with the High Freq setting of at (or
0dB) as this provides the most natural high-frequency response,
other things being equal. If you are monitoring material requiring
extra attention to high-frequency detailsas is often the case
when mixing orchestral music, for exampleyou may want
to experiment with setting the High Freq switch to the +2dB
position. (We recommend this setting for Pete Townshend as
well.) If youre mixing a Maroon 5 record or a Bollywood lm
score, you may nd the -2dB setting more appropriate (unless
you want your ears to bleed).
Keep in mind that if your monitoring setup is too bright, your
mixes may end up sounding dull everywhere else; and of course,
in the reverse situation the opposite is true. When in doubt, use
the at settingits what is most correct.2
6)Mid-RangeBoost
The Mid-Range switch LL offers a low-Q (wide bandwidth) 2dB
boost centered in the 1kHz to 2kHz range. Effectively, it brings
the image forward a bit and can be useful in examining timbral
details of lead instruments. Start by leaving this switch in the
at (unaltered) position, but feel free to experiment with it to
see if you like the results.
7)LowCutoffSwitch
The Low Cutoff switch L� allows you to adjust the bass roll-
off response of your EX66. Its a high-pass lter with a 6th-
order Butterworth alignment (36dB/octave), and you can set the
corner frequency to 37Hz, 80Hz, or 100Hz. We recommend
you start with the lter all the way open (37Hz setting) and only
4)SettingtheVolumeLevelraise the cutoff frequency in order to protect the woofers at
The EX66 contains a calibrated Volume L� (which knob is low frequencies (i.e., to avoid problems of the voice coil hitting
actually an input trim). For your convenience, the back plate).weve marked
a reference level of 0the setting at which a -10dBV pink-
noise input signal yields 90dB SPL (c-weighted) at 1 meter from
the front bafe. If your driving the EX66 with a hotter signal
(e.g., +4 dBu level), you may wish to turn down the Volume knob
(perhaps close to the -13 mark).
We recommend you play a stereo pink-noise signal through
your EX66 monitors and measure the output of each speaker
using a sound pressure level meter (using a c-weighting lter).
This will give you objective criteria with which to match the
levels. Alternatively, if you know that each EX66 monitor is in
the same acoustic environment (considering relative distances
to reective surfaces), you can simply turn the Volume knob all
the way up on each monitor and feel condent that the levels
are closely matched.
By the way, in case you were wondering, the Volume control
adjusts the level in the analog domain (prior to the digital
conversion), so it does not deteriorate the full digital dynamic
range.
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