ParaEq
user manual
Introduction
The Empress ParaEq is designed to be a tool for sweetening the
tone of any instrument. We’ve noticed that the EQ sections of many
instrument amplifiers offer a very limited range of control. We’ve
designed the Empress ParaEq to give musicians a powerful, musical,
high quality EQ in a conveniently small package. The signal path of
the ParaEq is comprised of the highest quality components chosen
for their transparency, powerful tone shaping capabilities, and low
operating noise. With the Empress ParaEq, your instrument will still
sound like your instrument, only better.
To help you get the most out of this product, we’ve put some brief
instructional videos on our website:
www.empresseffects.com
Enjoy,
Steve Bragg
Sample Applications
General Sweetening: Say you really like the tone of your guitar but
find it could be a little brighter with a more high end detail. With
the ParaEq, adding a small boost in the range of 3 kHz to 5 kHz with
a wide Q will add a bit more detail, while still retaining the sound of
your instrument. In a similar manner, adding a wide Q boost to the
low frequency range will warm up your instrument’s sound.
Tone Correction: Say you’ve set your amp up in a venue and find
that the acoustics of the stage are making it sound too boomy. By
cutting some of the frequencies in the low mids (200Hz – 600Hz)
with a medium width Q, you can minimize the negative effects of
the room acoustics on your sound.
If you find your guitar isn’t cutting through the rest of the band, you
can boost the upper mid frequency range ( 1 Hz –4 kHz) instead of
simply turning up the volume of your amplifier, which could lead to
you just drowning out the rest of the band.
Feedback Zapping: With a DI’ed acoustic instrument, playing live at
stage volumes can sometimes be a nightmare. Feedback through
monitors can quickly ruin a great performance. By using the
ParaEq’s mid and hi frequency bands and narrow width Q settings
you’ll be able to cut the frequencies causing the feedback while
retaining much of your instrument’s sonic signature. The narrow
width Q setting ensures the range of frequencies being reduced is
very small preventing your instrument from sounding dull or
muddy.
Distortion Enhancement: Having the ParaEq before your amplifier
lets you use it to shape your distortion sounds in radical ways. For
example, if you want the treble of your signal to distort a little more
you can boost the high frequency band before it reaches your
amplifier. This lets you add a little sonic slicing capability to your
sound without muddying up your bottom end. The boost control on
the ParaEq is a great way to push an already cooking tube amplifier
into musical overdrive.
Q Controls
The Q is a measurement of how much the EQ band affects a range
of frequencies.
Tight or Narrow Q ( ): This setting is best for attacking problems.
For example, if you have an acoustic instrument feeding back, a
tight Q will allow you to cut the offending frequency without
affecting the frequencies around it.
Medium Q ( ): This setting is great for general tone shaping. Most
equalizers in instrument amplifiers are medium Q. Try using this
setting to cut frequencies in the 300Hz-400Hz range if your amp is
sounding a little muddy, or boosting in the 1 kHz-5 kHz range if your
guitar is a little dark.
Wide Q ( ): Wide Q settings are best when you want a really
transparent change to the signal. For example, boosting at around
100Hz can add a bit of warmth, and a little boost in the 3k range can
add detail and definition, all while retaining the original tone.
low q, mid q, hi q: the q switches determine the range of
frequencies aected by the equalizer on each band.
Wide q ( ) will aect a wide range of frequencies around
the selected frequency. q = 0.5 aects about 2 octaves
Medium q ( ) will aect some frequencies around the
selected frequency. This is a good place to start for general
tone shaping. q = 1.5 aects about 2/3 octave
Narrow q ( ) will only aect a very narrow range of
frequencies around the selected frequency. q = 3 aects
about 1/3 octave
There is a q control for each of the three frequency bands
available on the ParaEq w/Boost.
lf, mf, hf: selects the center frequency around which
you’d like to boost or cut for each band.
Boost Stompswitch: Toggles on/o the boost section
of the unit. When the LED is shining, the boost is
applied to the signal.
Controls at a Glance
+
Power: 9V DC negative
tip 2.1mm jack. 75mA or greater
-
Input Pad: lowers the level at the input of the pedal.
Start with this switch at 0 dB (no reduction in input level)
to maximize the signal-to-noise ratio of the unit. If you
hear distortion when using the pedal try lowering the
input signal level by moving the input pad switch to the
-6 dB or -12 dB setting.
Boost: controls the output level. It is a clean boost, perfect
for providing gain before an eects chain to minimize noise
or to overdrive the input of a tube amp. The available boost
ranges from 0 dB to +30 dB and is toggled on/o with the
boost stompswitch.
note: there will be no boost when the ParaEq is bypassed
Gain: determines the amount of boost or cut applied
to frequency band. At the 12:00 setting there is no
boost or cut applied. The range of boost or cut
available for each frequency band is -15 dB to +15 dB.
Bypass Stompswitch: When the LED is shining, the
ParaEq eect is applied to the signal. When o, the ParaEq
is being bypassed (true bypass).
Frequency Region Descriptions
Here’s a rundown of different frequencies that should be helpful
when using the ParaEq to achieve a specific end result.
Electric Guitar
80Hz – 150Hz: Boosting can add a subtle warmth and bigness to the
sound. Cutting can bring down any rumble you’re experiencing.
150Hz – 400Hz: Cutting in this region can remove a bit of mud, and
boosting will bring out the warmth.
400Hz – 800Hz: Cutting in this region can make the sound more
pristine. Boosting will add an aggressive edge to the sound.
800Hz – 2kHz: Boosting in this region will bring out the twang in
your sound. Cutting will create a rounder, less aggressive tone.
Above 3kHz: Boosting in this region can add brightness and sheen.
Cutting in this region can minimize noise and reduce harshness.
Bass Guitar
30Hz – 80Hz: The sub-bass region. Be careful when boosting in this
range; your speakers might not be happy if you boost too much.
80Hz – 150Hz: The bass region. Boost and cut in this region to
change the amount of bass in your sound.
150Hz – 500Hz: If your bass sounds too muddy, try cutting in this
region. If it needs a little warmth, try boosting in this region.
500Hz – 900Hz: Boosting in this region can add mid-range growl to
your tone. Cutting in this region can make things clean and pristine.
900Hz – 3kHz: Boosting in this region can bring out attack. Cutting in
this region can help create a rounder tone.
Above 3kHz: Cutting can bring down the noise without much effect
on the signal. Boosting can add a sense of air and space.
DI’d Acoustic Guitar
35Hz – 100Hz: Cutting in this region can help reduce rumble.
100Hz – 200Hz: This range is primarily responsible for the
boominess of your acoustic guitar. Cutting or boosting here can help
with low end projection.
400Hz – 500Hz: Boosting in this range can bring out warmth. Cutting
in this range can help remove mud in your sound.
500Hz – 4kHz: This broad slice of the sonic spectrum is where most
of your acoustic signal lives. Boosting here will make your guitar
sound more aggressive, while cutting will help mellow it out.
4kHz – 8kHz: The brightness of your acoustic lives in this region. If
your instrument sounds like you’re hearing it through a wall, boost
in this range. Cutting in this range will remove harshness.
5kHz and Above: Boosting in this range will bring out air in your
sound, and cutting will reduce noise. Beware of feedback though!
Adjustable Power Supply Feature
Voltage
Dip 1
Dip 2
Dip 3
9V – 11V
ON
Off
Off
12V – 17V
Off
ON
Off
18V – 24V
Off
Off
ON
The operating voltage of the Empress ParaEq is adjustable via an
internal DIP switch. You can access this switch by removing the back
plate. The ParaEq is initially setup to run from a 9V negative tip
supply, such as the popular Boss PSA-120. However, the unit will
accept voltages between 9V and 24V DC, provided the power supply
is negative tip. For maximum headroom, use a supply that operates
in the 18V-24V range, and is rated for a current of at least 130mA.
Here are the DIP settings for the various voltages:
Specifications
Input Impedance: 500kΩ
Output Impedance: 510Ω
Frequency Response (-3dB): 20Hz – 20kHz
Distortion: 0.09%
Noise: -104dB
Input Voltage:
Required Current:
Power Input Connector:
Height (enclosure only):
Height (including controls):
Length:
Width:
Weight:
9VDC-24VDC
75mA (9V - 11V)
95mA (12V – 17V)
130mA (18V – 24V)
2.1mm Barrel Connector
1.5”
2”
3.5”
4.5”
1lbs
www.empresseffects.com
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