EQUALIZER

GQX Series graphic equalizers are available in two configurations. The GQX-1502 features two channels of 15-band 2/3-octave equalization and a switchable high-pass filter (40Hz). The GQX-3102 features two channels of 31-band 1/3-octave EQ, a tunable high-pass filter circuit (8Hz to 200Hz), a switch-selectable cut or boost of either 6dB or 15dB. The 45mm full-throw faders are a custom-manufactured metal-shaft type, with the center detented position utilized as an "on/off" switch for that filter which minimizes any possible degradation in signal noise levels. A 10-segment, two color LED meter displays accurately displays your signal level and referenses 0 VU to +4dBu. The GQX models are designed to be significantly quiet without the need for noise reduction to be built into the equalizer circuit. Double-sided circuit boards and an extensive ground plane design are used in the filter sections to improve RFI and electrostatic immunity. Precision Wein-Bridge filters and carefully designed summing amplifiers combine to provide extremely accurate response, low noise, negligible distortion, and complete immunity to magnetic fields. All filters exhibit true constant "Q" response with no broadening near the "flat" setting. High slew-rate circuitry throughout the signal path results in clean, quiet, transparent sound. The faders used are a custom-manufactured metal-shaft type, with molded saddle knobs, for the ultimate in reliability and smooth "feel". Ashly's unique "T-Beam" front panel construction eliminates interconnections between the faders and the filters, resulting in a very rugged and rigid front panel. Input and output connections include locking XLR, 1/4" TRS and Euroblock. Ashly's servo-balanced output circuitry maintains unity gain even if pins 2 or 3 are connected directly to ground. The power supply is a universal switching power supply which operates from 100-240VAC, 50/60Hz with the power switch located on the rear panel

Input Connector 1/4" TRS, female XLR (pin 2 hot) and barrier terminal strip Type Electronically balanced/unbalanced, RF filtered Impedance Balanced 40KΩ, unbalanced 20KΩ Max Input Level > +21dBu balanced or unbalanced CMRR > 40dB, typically > 55dB at 1KHz Output Connector 1/4" TRS, male XLR (pin 2 hot) and barrier terminal strip Type Impedance balanced/unbalanced, RF filtered Impedance Balanced 120Ω, unbalanced 60Ω Max Output Level > +21dBu balanced/unbalanced into 2KΩ or greater > +18dBm balanced/unbalanced (into 600Ω) System Performance Bandwidth 20Hz to 20KHz, +0.5/-1dB Frequency Response < 10Hz to > 50KHz, +0.5/-3dB Noise Reduction In (+/-6dB and +/-15dB range) : Signal to Noise > 100dB, unweighted : Dynamic Range > 118dB, unweighted Noise Reduction Out (+/-6dB range) : Signal to Noise > 94dB, unweighted : Dynamic Range > 112dB, unweighted Noise Reduction Out (+/-15dB range) : Signal to Noise > 90dB, unweighted : Dynamic Range > 108dB, unweighted THD+Noise < 0.04%, 0.02% typical at +4dBu, 1KHz < 0.5% at 1KHz with 15dB gain reduction Interchannel Crosstalk < -80dB, 20Hz to 20KHz Noise Reduction Up to 20dB of dynamic broadband noise reduction Function Switch Type III NR Activate Type III Noise Reduction EQ Bypass Bypass the graphic equalizer section in the signal path Low Cut (recessed) Activate the 40Hz 18dB/octave Bessel high pass filter Range (recessed) Select either +/-6dB or +/-15dB slider boost/cut range Indicator Output Level 4 LED bar graph at -10, 0, +10 and +18dBu Gain Reduction 4 LED bar graph at 0, 3, 6 and 10dB Type III NR Active Yellow LED EQ Bypass Red LED Clip Red LED Low Cut Red LED +/-6dB Range Yellow LED +/-15dB Range Red LED Power Supply Operating Voltage 230VAC 50/60Hz Power Consumption 28 Watts Main Connection IEC receptacle

Main Feature - Switchable range between +/-6dB and +/-15dB - Balanced input and output - XLR, barrier strip and 1/4" TRS connector - Input gain range -12dB/+12dB - 18dB/octave 40Hz Bessel low cut filter - Chasis/signal ground lift capability Input Connector 1/4" TRS, female XLR (pin 2 hot) and barrier terminal strip Type Electronically balanced/unbalanced, RF filtered Impedance Balanced 40KΩ, unbalanced 20KΩ Max Input Level > +21dBu balanced or unbalanced CMRR > 40dB, typically > 55dB at 1KHz Output Connector 1/4" TRS, male XLR (pin 2 hot) and barrier terminal strip Type Impedance balanced/unbalanced, RF filtered Impedance Balanced 200Ω, unbalanced 100Ω Max Output Level > +21dBu balanced/unbalanced into 2KΩ or greater > +18dBm balanced/unbalanced (into 600Ω) System Performance Bandwidth 20Hz to 20KHz, +0.5/-1dB Frequency Response < 10Hz to > 50KHz, +0.5/-3dB Dynamic Range (+/-6dB range) 115dB Dynamic Range (+/-15dB range) 109dB Signal to Noise (+/-6dB range ) 97dB Signal to Noise (+/-15dB range) 90dB THD+Noise < 0.005% Interchannel Crosstalk < -80dB, 20Hz to 20KHz Function Switch EQ Bypass Bypass the graphic equalizer section in the signal path Low Cut (recessed) Activate the 40Hz 18dB/octave Bessel high pass filter Range (recessed) Select either +/-6dB or +/-15dB slider boost/cut range Indicator Output Level 4 LED bar graph at -10, 0, +10 and +18dBu EQ Bypass Red LED Clip Red LED Low Cut Red LED +/-6dB Range Yellow LED +/-15dB Range Red LED Power Supply Operating Voltage 230VAC 50/60Hz Power Consumption 24 Watts Main Connection IEC receptacle

EQ2231 is a general graphic equalization with excellent function which is suitable for many kinds of sound adjustment in the audio projects. Features: - The EQ2231 is a two channel graphic equalizer that provides a generous +/-15dB of control range on each of 30 constant Q frequency bands. - Centre bypass. When any eq fader is in its centre detent position,the filter is automatically bypassed, for optimum performance. - Sweepable high pass filter, frequency adjustable from OUT (flat) up to 250Hz. รา

Feature Professional audio engineers have known fo How Does Equalization Work? Special Tools for Low and High Frequencies Crossover Built in FBQ - Totally Feedback-Free Stereo or Double-Duty? FBQ6200 – Much More Than Just a Great EQ Superb Audio, Sound Value Quick View Menu FBQ6200 (30 Reviews) Audiophile 31-Band Stereo Graphic Equalizer with FBQ Feedback Detection System Legacy Product Sweetwater Thomann Musician's Friend Music Store Amazon Audiophile 31-band stereo graphic equalizer for live and studio applications Revolutionary FBQ Feedback Detection system instantly reveals critical frequencies and can also be used as audio analyzer Dedicated Limiters with gain reduction meters for each channel protect your sound system from overload and distortion Pink noise generator provides test signals to adapt your sound system to any room acoustics Mono subwoofer output with dedicated level control and adjustable crossover frequency Additional sweepable high and low-cut filters for each channel remove unwanted frequencies e.g. floor rumble, hiss etc. Highly accurate 8-segment LED input/output metering and input gain controls for easy level setting Ultra-low noise audio operational amplifiers for highest signal integrity Relay-controlled hard bypass with an auto-bypass function during power failure (failsafe relay) Servo-balanced inputs and outputs with 1/4" TRS and gold-plated XLR connectors Shielded toroidal power transformer for ultra-low noise performance High-quality components and exceptionally rugged construction ensure long life

Professional 31-band stereo graphic equalizer for live and studio applications Revolutionary FBQ Feedback Detection system instantly reveals critical frequencies and can also be used as audio analyzer Dedicated mono subwoofer output with adjustable crossover frequency Additional sweepable high and low-cut filters for each channel remove unwanted frequencies, e.g. floor rumble, hiss etc. Highly accurate 12-segment LED input/output metering and input gain controls for easy level setting Ultra-low noise audio operational amplifiers for highest signal integrity Relay-controlled hard-bypass with an auto-bypass function during power failure (failsafe relay) Servo-balanced inputs and outputs with 1/4" TRS and gold-plated XLR connectors Shielded toroidal power transformer for ultra-low noise performance