Acoustic Tuning Controls - PRESONUS Eris E44 Owner's Manual

2 Hookup
2.1 Rear Panel Connections and Controls
POWER
AC SELECT

2.1.3 Acoustic Tuning Controls

-6dB
MID
+6dB
LOW
CUTOFF
Flat
80Hz
100Hz
ACOUSTIC
SPACE
-4dB
-2dB
0dB
Power Switch. This is the On/Off switch. The power status is
indicated by an LED on the front of the cabinet.
AC Select Switch. The input-power voltage is set at the
factory to correspond with the country in which it was
shipped. Use this switch only if you are using your Eris
speakers in a country that uses a different standard voltage
than is used in the country where you purchased your Eris
E44 or E66.
High: Boosts or cuts all frequencies above 10 kHz
by ±6 dB.
Power User Tip: The High control on the Eris E44/E66
is a high-shelf EQ and attenuates or boosts frequencies
above 10 kHz. This EQ is much like the treble control on a
car stereo: It raises or lowers the gain on all frequencies
above the specified cutoff frequency. Shelving EQs
can make big changes to the sound very quickly by
adding or removing an entire range of frequencies.
Mid: Boosts or cuts frequencies around 1 kHz by ±6 dB.
The Mid control is a peak EQ that lets you boost
or cut a specified frequency band (in this case,
a band about two octaves wide, centered at 1
kHz). It's capable of more subtle changes.
Low Cutoff: Rolls off the level of all frequencies below the
specified frequency (80 or 100 Hz) at a slope of -12 dB/
octave. Can be defeated by setting it to Flat, in which case,
the monitor's natural rolloff takes over.
Acoustic Space: Cuts the level of all frequencies below 800
Hz by the specified amount (-2 or -4 dB) to compensate for
the bass boost that occurs when the monitor is placed near
a wall or corner. Can be defeated by setting it to 0 dB.
Eris™ Series E5 and E8
Owner's Manual
5