®
GRAPHIC EQUALIZERS
MODELS RR-215, RR-131, and RR-231
an EQ adjustment of ±6 dB or ±12 dB, depending on the
setting of the Range switch.
FEATURES
● Three models:
All models are built using compact 20 mm sliders,
allowing a full set of 30 or 31 sliders to fit in only a single rack
space. Though small, the sliders are of high quality and have
a smooth, silky feel. They are center detented for quick,
reliable identification of the zero setting.
RR-215: Dual 15 Band Graphic Equalizer
RR-131: Single 31 Band Graphic Equalizer
RR-231: Dual 31 Band Graphic Equalizer
● 20 mm sliders with center detents used throughout
● Output level matching controls with 0 to 10 dB range
● Bypass and Range buttons with LED indicators; Range
buttons allow ±6 dB or ±12 dB slider adjustment
● Low Pass and High Pass buttons (RR-215) or sweepable
controls (RR-131, RR-231)
Because the exact EQ setting chosen may alter the
program’s overall loudness, Level controls are provided.
These are sliders which allow trimming the gain over a 10 dB
range. An LED Clip light glows if the audio signal has
exceeded the maximum output level (i.e., an overload
condition exists), in which case the Level slider can be
reduced to avoid distortion.
● Clip LEDs indicate overload conditions
● Unbalanced RCA, as well as balanced 1/4" TRS phone
and XLR connectors, for all inputs and outputs
● Ground lift switches
Pushbuttons are provided on each channel for Bypass,
allowing an instant comparison of the sound with EQ in or
out. A yellow LED glows when the EQ is bypassed.
● Dual voltage switch (100/120 or 200/240 VAC)
All models feature extra control of extreme lows and
highs. The RR-215 has High Pass buttons which cut lows
below 40 Hz, and Low Pass buttons which cut highs above 16
kHz. The RR-131 and RR-231 provide adjustable controls for
High and Low Pass, allowing the cutoff frequencies to be set
anywhere from 10 to 250 Hz, and 3 to 50 kHz, respectively.
The High Pass function is particularly useful in avoiding
power-gobbling rumble in systems not designed to reproduce
extreme lows.
DESCRIPTION
RackRider's newest line of graphic equalizers have the
features and performance you need for any sound
reinforcement, room equalization, or recording application.
The single-channel RR-131 and dual-channel RR-231
divide the audio frequency spectrum into 31 bands, each
spaced 1/3 of an octave apart, while the dual-channel
RR-215 divides the spectrum into 15 bands, each spaced 2/3
of an octave apart. The actual center frequencies chosen are
those designated as standards by the ISO. Each slider allows
For ease of hookup, any of three types of connections
may be used for each input and output: XLR (balanced), 1/4"
TRS phone (balanced or unbalanced), and RCA
RackRider ® products are designed and imported exclusively by:
Furman Sound, Inc. • 1997 South McDowell Blvd. • Petaluma, CA 94954, USA
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