ARX EQ260 DUAL CHANNEL-CONSTANT Q- 3rd OCTAVE GRAPHIC EQUALIZER

“Building on 20 years of EQ design and manufacture, ARX once again
redefines the standard for Graphic Equalizers with the all-new EQ260!"

Features
New  (Extended Resolution) long-throw faders for maximum control and
resolution, with integrated protective dust cover
New Sweepable High Pass filter 20-200Hz
Ultra low noise 'Constant Q' circuitry
Balanced Inputs and Outputs on XLR and Jack connectors
Switchable 6dB or 15dB cut and boost
Audio Ground lift switch on rear
Intuitive controls
User friendly layout
...and most of all, flawless performance in any audio environment!
 
EC-2
The ARX EQ260 is a Dual Channel 30 band Graphic Equalizer designed to give you
the flawless professional performance you demand, yet take up minimal rack space.
It is neatly housed in a compact 3 RU all steel chassis.
Quality you can feel as well as hear
Each channel on the silver grey front panel features 30 of our new Extended Resolution
long throw, centre grounding faders, switchable to either ±15dB or ±6dB, for the ideal
combination of high fader resolution and maximum cut and boost. A protective dust cover
is also fitted to each fader.As well, there is a Gain recovery control with up to +10 dB of
gain; a Clip LED to indicate circuit overload, a sweepable 20-200Hz High Pass filter, and
an IN/OUT hardwire bypass switch which removes the EQ260 completely from the signal
path.
Accurate Constant Q Circuitry
Internally, the EQ260 features innovative Constant Q circuitry. What makes this so good?
Well, it means that the graphical representation of the sliders on the front panel more
accurately reflects the changes you make to the sound, as compared to traditional EQ
designs.In other words, 'what you see is what you get.' Combine this circuitry with the 60
individual filters in the EQ260, and you have an equalizer that is unsurpassed for total accuracy.
Additionally, at the 0dB slider position each filter is, in effect, removed from the circuit to further
enhance the EQ260's low noise figures.
Balanced Inputs and Outputs
On the rear panel, the EQ260 has true differential Balanced Inputs and Servo Balanced Outputs,
on both XLR as well as convenient TRS jack connectors.There is also an audio ground lift switch
to isolate the audio ground from the chassis ground.
Universal AC Power
AC power range is a universal 100 to 120V or 220 to 240V AC, and is connected to the unit via a
removable power lead and standard 3 pin IEC connector, with built-in fuse and voltage switch.

At ARX, we know that there's no shortage of other Equalizers out there! But we believe the ARX EQ260
delivers superlative, uncompromising audio quality that will truly enhance any pro audio application. Its
accuracy, compact High Density design, cool good looks, and most of all its superb sound will make it
the dual channel graphic equalizer of choice for demanding engineers around the world.
You'll never compromise on Quality when you choose ARX

T E C H N I C A L  S P E C I F I C A T I O N S
Input Impedance Balanced 20 Kohms, Unbalanced 10 Kohms
Input Headroom + 23 dB
CMRR >55 dB, 20 Hz to 20 KHz
Output Impedance Balanced 300 ohms, Unbalanced 150 ohms
Output Level (Max) + 23 dB
Frequency Response 10Hz to 20KHz ±0.25dB
Signal to Noise ratio -93 dB Unweighted, -98 dB 'A' weighted
Distortion .0035% THD, 0dB, @1KHz
Dynamic Range 116 dB
High Pass Filter Sweepable 20-200Hz
Power Requirements 100/120 V AC, 220/240 V AC, 18VA
Weight 10lbs/4.5Kg
Dimensions 19“W x 5 1/4“H x 8“D, 482 x 132 x 205 mm
Input Connector type XLR, Balanced Jack
Output Connector type XLR, Balanced Jack

Front Panel Controls
30 x 60mm Extended Resolution long throw, centre grounding faders
per channel on ISO standard frequencies, 25 Hz to 20 KHz
Infinity through to +10dB Gain control
LED clipping indicator
Sweepable High Pass filter 20-200Hz
15 or 6 dB EQ Cut/Boost range switch
Hardwire bypass EQ IN/OUT switch
Rear Panel
Balanced Inputs and Outputs, on both XLR and TRS jack connectors.
Audio Ground Lift switch
AC input connector, with voltage switch and fuse. 

The Rane ME 15S microGraphic Equalizer is a two-channel, 2/3-octave design with 20 mm sliders in a single rack space unit. It features a Range switch for high slider resolution in the ±6 dB mode, equivalent resolution to 45 mm sliders found on the DEQ 60L. The ±12 dB mode provides a wide range of control over system audio.

The active filter sections feature Raneʼs innovative constant-Q (constant bandwidth) design. Constant-Q means the bandwidth of each individual filter is guaranteed to be narrow enough to prevent unwarranted interaction between filters, yet wide enough to produce exactly the type of correction curve demanded by even the most unusual acoustic surroundings. This differs dramatically from conventional designs of the past, encumbered with the unfortunate characteristic of changing bandwidth when changing boost/cut amounts.

Front panel controls and indicators include an overall rotary Level control for each channel as well as Overload indicators. Passive pushbutton Bypass switches feature LED indicators, avoiding ambiguity by being on when the unit is Bypassed. (A passive Bypass switch requires no power to operate. This allows completion of the audio path should power fail in the ME 15S.)

Inputs and Outputs are electronically balanced designs, capable of unbalanced operation when required. They accept and drive all possible signal levels into normal load impedances. Balanced applications choose between the XLR or 1/4" Tip-Ring-Sleeve connectors. Unbalanced sources also may tie to the ME 15S through mono 1/4" connectors (no ring connection).

• Constant-Q Bandwidth Design
• Overall Level Controls and Passive Bypass Switches
• 20 mm Filter Slide Controls with ±6 dB or ±12 dB Slider Range
• Infrasonic, Ultrasonic, & RFI Filters
• Balanced XLR and 1/4" TRS Inputs and Outputs
• Universal internal switching power supply (100-240 VAC)

The AD2055 combines 100% discrete, pure class A signal amplifiers with state-of-
the-art passive and active filter topologies. The AD2055's unique circuitry delivers
very high resolution transient detail at the operational extremes of real world equalization
demands. The AD2055 auto-bias DC servo loop control eliminates the need for all
interstage capacitor coupling. The AD2055 breathes life into all musical performances!
 
AD2055 FEATURES
Pure Class A, 100% discrete design
Smooth musical detail and sonic excellence
Minimum audio signal path
Dual mono operation
Transparent active and passive filter design
High headroom +30dB Very low noise -94dB
Fully balanced inputs and outputs
DC coupled, no transformers in audio path
Switched frequencies in high and low bands
Mid bands use X10 frequency for extended range
Wide bandwidth -3dB 1Hz to 450kHz
Low distortion less than 0.5% THD and IMD
All signal routing with sealed silver relays Conductive
plastic potentiometers for low noise
External 150W toroidal power supply 100% discrete
power supplies for audio path
Long lasting, stainless steel hardware
 
SONIC EXCELLENCE
The Avalon AD2055 Pure Class A music equalizer is the most powerful, low noise
parametric equalizer available today. Designed to optimize absolute signal integrity
and musical performance, the AD2055 combines the best of active and passive filter
topologies with sonic excellence unequaled by lesser designs. The AD2055 is the
perfect solution for two buss music-program equalization, special instrument EQ and
FX applications and ultra high performance mastering studio's.

Features include state-of-the-art, balanced 100% discrete, Pure Class A signal amplifiers,
practical user features and rugged hardware designed to deliver true high performance
audio for many years. 

PASSIVE-ACTIVE FILTER DESIGN
Avalon equalizers feature the unique combination of both active and passive filter EQ designs.
This special combination enables the AD2055 to deliver high speed transient detail at the
operational extremes of real-world equalization demands. The passive high and low bands offer
alternate musical tone range to the full function active parametric mid bands. Passive equalizers
have long been a favorite with music lovers around the world.  Full bodied, powerful (up to +/-32dB,
64dB range !) and sweet frequency selections are the benefits of the passive high-low EQ bands.
The full bandwidth twin mid bands provide variable frequency selection (X10 frequency multipliers
for very wide range), variable Q (width) and amplitude control.

MINIMUM SIGNAL PATH DESIGN
Avalon's advanced true symmetry design offers high-voltage, large headroom, extended bandwidth
and very low noise. The use of 100% discrete, Pure Class A signal amplifiers give the serious music
professional unlimited sonic character and a natural harmonic detail that enhances the program
material and becomes one with the music itself. The Avalon AD2055 breathes life!

AD2055 SPECIFICATIONS
Circuit Topology  High-voltage 100% discrete, balanced and symmetrical
Class A 
Output Gain Range  Unity Gain 
Maximum Input Level  +30dB balanced XLR pin 2 hot 
Maximum Output Level  +32dB balanced 600 ohms, DC coupled, high-current
discrete Class A 
Input / Output Type  XLR type, pin 2 hot balanced 
Noise 20kHz Unweighted  -94dB (EQ in) 
Distortion THD, IMD  0.5% (typical 0.05% at +6dB 1kHz) 
Frequency Response -3dB  1Hz to 450kHz (input band limited) 
Equalizer Type  Passive high and low bands plus two fully parametric mid
bands 
Bypass  Hard-wire relay bypass for equalizer in-out 
Low Band F1  Passive, amplitude to -32dB to +32dB shelf or peak-dip curve 
F1 Frequency Range  Switched 10 position 18Hz, 25, 30, 50, 72, 100, 150, 215,
300, 450Hz 
Mid Band F2  Active, amplitude to -16dB to +16dB peak-dip curve 
F2 Frequency Range  Variable 35Hz to 450Hz (x10) 350Hz to 4k5Hz, Q (width)
0.3 to 3.0 
Mid Band F3  Active, amplitude to -16dB to +16dB peak-dip curve 
F3 Frequency Range  Variable 160Hz to 2k0Hz (x10) 1k6Hz to 20kHz, Q (width)
0.3 to 3.0 
High Band F4  Passive, amplitude to -26dB to +26dB shelf or peak-dip curve 
F4 Frequency Range  Switched 10 position 1k5Hz, 2k5, 3k5, 5k, 7k2, 10k, 12k5,
15k, 20k, 25kHz 
AC-DC Power  External AC supply, 150w toroidal transformer, 4 pin cable 90v
isolated, 
(B2T Power Supply Included)  100-240v selectable 50/60Hz, 150w max 
Dimensions  19 x 3.5 x 12 in (482 x 88 x 305mm) 
Shipping weight  30lbs (13.6 kg) 

Digital stereo active crossover with 4 inputs and 8 outputs, incl. software .

• Flexible routing configurations for all standard mono and stereo output operating modes
• 4 analog inputs and 8 analog outputs (XLR)
• Active frequency filter types (Bessel, Butterworth and Linkwitz-Riley) with slopes up to 24 dB/octave split up the audio signal into different frequency bands
• Incl. software editor (for PC and Mac) for remote control via computer through USB interface: store, transfer, and manage your presets
• Up to 30 user presets storable in the device via software
• 5 menu languages selectable (German, English, French, Spanish, Dutch)
• Alphanumeric LCD screen with 2 lines of 16 characters each
• Input sensitivity digitally adjustable
• Inputs and outputs with 4-digit LED level meter as well as clip and limit LED indicator
• Mute switch with LED indicator per output
• 7-band parametric EQ per output
• Up to 7 ms signal delay adjustable for the outputs
• Output limiter with adjustable limits and automatic attack and release settings as overload protection for your amplifying system
• Switchable phase
• Lock function for prevents undesired changes to settings
• Rack installation, 1 U
• Windows XP, Vista, 7, 10 and Mac OS X 10.5.8 and better
• Digital signal processor
• The device can be connected via USB to the PC in connection with DXO Software The firmware can be updated via the PC connection
• (19") 48.3 cm rack installation 1 U

• 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
• Ultra-low noise 4580 operational amplifiers for highest signal integrity
• 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

• Relay-controlled hard-bypass with an auto-bypass function during power failure (fail-safe relay)
• Servo-balanced inputs and outputs with 1/4" TRS and gold-plated XLR connectors
• “Planet Earth" switching power supply for maximum flexibility (100 - 240 V~), noise-free audio, superior transient response plus low power consumption for energy saving
• 3-Year Warranty Program*
• Conceived and designed by BEHRINGER Germany

Phonic's GEQ3102F is the authentic soundman's choice of EQ - a dual channel 31-band equalizer, offering 6 or 12 dB of cut or boost on standard ISO center frequencies between 20 Hz and 20 KHz. The GEQ3102F is 2-rack space units high and accepts both 1/4" TRS phone jacks and XLR connectors, making it ideal for any studio or live venue setup.

• Sweepable high and low cut filters on each channel to remove unwanted frequencies 
• Ultra low-noise audio operational amplifiers offer outstanding sound performance 
• Relay-controlled hard-bypass with an auto-bypass function during power failure 
• Dedicated subwoofer output with user-adjustable low-pass filter
• Feedback detection circuitry for indicating critical frequencies
• Balanced inputs and outputs with 1/4" TRS and XLR connectors