Ashly Graphic Equalizers GQ-231 - Manual

ASHLY
Graphic Equalizers
models GQ-215, GQ-131, GQ-231
GQ-131
GQ-231
I hen Ashly set out to design the
GQ-Series, we first thoroughly
re-examined the accepted prin­
ciples of graphic equalization.
Extreme accuracy and ease-
of-use, combined with Ashly's
1
renowned clean, straightfor­
ward engineering and design, produce a
series of graphic equalizers that can truly
be called the "next generation."
There are three models available in the
GQ Series. The GQ-215 offers two chan­
nels of 2/3-octave, 15-band equalization
and features a peak-indicating LED, a
fixed, swifchable 40Hz subsonic filter,
and a cut or boost range of ±15dB. The
GQ-131 is a mono 1/3-octave, 31-band
equalizer, incorporating a switchable sub­
sonic filter that is tunable between 8Hz
and 200Hz, and a boost or cut range of
either ±6dB or ±15dB. Additionally, a nine
position, three color LED level meter and
a peak-indicating LED are provided for
visual reference. The GQ-231 has two
separate channels of 1/3-octave, 31-band
equalization, each incorporating the same
features as the GQ-131.
Ashly's innovations in the GQ-Series
are numerous: New Op-Amps, with high
slew-rate circuitry for the length of the sig­
nal path, turn out a clean and virtually
noiseless, transparent sound. A unique
summing system, with low-noise ampli­
fiers, is utilized, allowing minimum ripple
and filter interaction. At the detected "flat"
center position, the filters go off-circuit for
an extremely accurate flat response and
absolute minimum noise. There is no
broadening at all near the flat setting.
Our new Q-enhanced Wein-bridge fil­
ters are vastly superior to typical R-L-C
and simulated inductor types. Construct­
ed of precision metal-film resistors and
polyester capacitors, they produce an
ideal curve shape and precise center fre­
quencies with low distortion.
Finally, a unique T-beam front panel
construction eliminates interconnections
between the faders and filters, resulting in
a graphic equalizer with genuine Ashly
innovation, reliability and sonic quality.
The GQ Series, like all Ashly products, is
now fully covered by our exclusive five-
year worry-free warranty.
Five-Year
Worry-Free Warranty
Detented Metal-Shaft
Fader with Saddle Knob
Precision Wein-bridge
Filters for Accurate
Response and
Low Distortion
Constant "Q" Design
with Low Ripple and
Accurate Response
Near the "Flat" Setting
Selectable 15dB or
6dB range
(on 31-Band Models)
Switchable-Tunable
Low-Cut Filter
(Switchable 40Hz
Fixed on GQ-215)
9-Position, 3-Color
LED Level Meter (on
31-Band Models) Plus
Peak LED Indicators
Balanced XLR and
Unbalanced 1/4" Inputs
and Outputs