PRESONUS DEQ-624 – DIGITAL STEREO GRAPHIC EQUALISER w-DYNAMICS

The DEQ624 is a new direction for two channel/stereo graphic equalizers. Although
equalization is the main function, it provides many more benefits. The DEQ624 is a
digital processing unit, under digital control but with a familiar analog feel; no menus
or sub-menus to slow you down on the gig. The DEQ624 incorporates a separate hi-pass
and lo-pass filter for each channel for use in dialing in or out a certain range of frequencies.
There is a narrow Q select that gives more precise control over the frequency being attenuated,
without affecting adjacent frequencies. Metering is via 22-segment board-mounted LED's
that show output gain as well as a 9-segment LED for gain reduction on each channel.
There is a switchable Range control that changes the cut/boost of individual frequencies
over three different scenarios; +6 dB to -6dB, +12dB to - 12dB or +12 dB to - 24dB. The
Channel-A Master button copies Channel-A settings to Channel-B, eliminating the need to
manually set both channels in a live stereo situation. The DEQ624 provides a Security Lock-
out Feature and enables the user to define and store four preset EQ curves for the venues
or programs where the DEQ624 is most used. Presonus has developed a proprietary 60-cycle
hum cancellation algorithm, which is deemed AHC for 'Adaptive Hum Cancellation'. The
AHC circuit is the only one of its kind to be used in an audio system and should be worth
the price of admission for many live venues where ground-loops and poorly designed systems
are common. Each channel on the DEQ624 has its own compressor/limiter with Threshold
control for system and listener protection from harsh peaks and transients. The DEQ624 includes
a separate expander for each channel that gives the user control over Threshold and Ratio, which
provides for system noise to be minimized when idle. The rear panel of the DEQ624 provides for XLR
Balanced in an out as well as barrier-strip terminals for permanent installation. The power supply is
internal and the chassis is custom molded extruded aluminum and steel.  

 Features
? Analog Feel with 24Bit DSP
? Two 31-Band Equalizers
? 74 High Resolution Digital Encoders
? Variable Hi-Pass and Lo-Pass Filters
? Transparent Multistage Limiting
? Seamless Noise Reduction via Downward Expander
? Hi-Q can be selected for any frequency (1/8th Octave Narrow Notch)
? Selectable Ranges: +/- 6dB , +/-12dB , +12/-24dB
? Relay Bypass
? Metering via 22 Segment LED?s that show output gain as well as 9-segment
   LED for gain reduction for each channel
? Channel-A Master button copies settings to Channel-B, eliminating the need to
   manually set both channels in a live stereo situation
? Security Lockout feature disables front panel encoders
? Snapshot storage and recall of four programs
? AHC Proprietary Digital Algorithm adaptively detects and removes system
   hum up to the 24th harmonic
? Rear panel of the DEQ624 provides for XLR and TRS Balanced I/O as well as
   barrier-strip terminals for permanent installation
 
Technical Specifications:
Number of Channels Two
Dynamic Range >105dB
Noise Floor -95dBu
Signal to Noise >90dB
Power Supply Rejection >98dB
Headroom +22dBu
Frequency Response +/- 0.5dB 10Hz to 22kHz
Channel Gain -20dB to +20dB
THD + Noise (Unweighted) 0.005%
Input
Input Impedance 12KW
Input Connectors 51W XLR,1/4" TRS, and Barrier Strip
Output
Output Impedance 51W
Output Connectors XLR,1/4“TRS, and Barrier Strip
Metering
Level Meters 20-Segment LED -42dBu to +22 dBu
Gain Reduction 10-Segment LED -0.5dB to -12 dB
Power Supply
Type Linear
Input 115 / 230V AC (Factory Configured)
Power 20 Watts
Main Connection IEC receptacle
Size 2U Rack
Dimensions 19" W x 9" D x 3.5" H
Weight 14 lbs./ 6.35 kg.
Chassis Steel/Aluminum
 

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

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

• 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

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