Feedback suppressor Shure DFR11EQ

Feedback Suppressor Shure DFR11EQ

Shure DFR11 EQ is a single-channel feedback suppressor. A single-channel processor that has a full dynamic controller, parametric equalizer, and delay, providing the user with all the necessary tools for effective signal processing within stationary or touring sound installations.

The dynamic algorithms available to the user of the DP11EQ processor include automatic gain control, gate, expander, compressor, limiter, and hard peak limiter.

Nine bands of parametric equalizer with high-pass and low-pass filters combined with a delay of up to 1.3 seconds are ideal for aligning the characteristics of monitors in both near and far fields.

DP11EQ is equipped with a computer interface that allows monitoring the signal on a Windows-compatible computer display not only through convenient indicators of input and output levels but also to observe the sound path considering all connected processing. This allows all manipulations with the device's parameters to be performed using an ergonomic computer mouse. Additionally, to avoid issues related to staff inconsistency when working with the computer, the software allows locking the front panel of the processor.

Any user settings can be saved in the memory of the DP11EQ. These parameters can also be "saved" to a hard drive, floppy disk, or any other computer archiving device.

For joint switching of up to 16 DP11EQ devices controlled from one computer, the device supports operation with the proprietary Shure Link interface. Moreover, DP11EQ can be linked via a wireless network interface into a common network with other Shure equipment - DFR11EQ and UA888.

Technical specifications of Shure DFR11EQ:

• Frequency range: 20 Hz - 20 kHz ± 1.0 dB at 1 kHz.
• Dynamic range: 104 dB.
• Sampling frequency: 48 kHz.
• Digital-analog, analog-digital converters: 20 bit.
• Voltage gain: 12 dB ± 2 dB (input -10 dBV, output +4 dBu), -12 dB ± 2 dB (input +4 dBu, output -10 dBV), 0 dB ± 2 dB (at equal sensitivity at input and output).
• Impedance: input 47 kOhm ± 20%, output 120 Ohm ± 20%.
• Input overload capability: +18 dBu (at sensitivity +4 dBu), + 6 dBV (at sensitivity -10 dBV).
• Output overload capability: +18 dBu (at sensitivity +4 dBu), + 6 dBV (at sensitivity -10 dBV).
• Non-linear distortion coefficient: 0.05 % at 1 kHz, +4 dBu, 20 Hz - 20 kHz.
• LED signal indicators: signal -40 dB, overload - 6 dB before input overload.
• Delay between input and output: 0.8 ms (with no processing), up to 2.1 ms (with all processing algorithms connected).
• Temperature range: 0° - 30° C.
• Dimensions: 219x137x44 mm.
• Weight: 930 g.
• Dynamic processor:
• Gate and expander: threshold: from -72 to -1 dB in 0.5 dB steps, attack: 1.0 ms - 200 ms, release: 0.05 s - 1 s, gate delay time: 0 - 0.5 s.
• Automatic gain control: threshold from -72 to -1 dB in 0.5 dB steps, attack 0.2 s - 3 s, release 0.5 s - 5 s.
• Compressor and limiter: threshold: from -72 to -1 dB in 0.5 dB steps, attack 1.0 ms - 200 ms, release 0.05 s - 1 s, switchable soft or hard characteristic.
• Peak limiter: threshold from -72 to -1 dB in 0.5 dB steps, attack 0 ms, release 100 ms.
• Parametric equalizer:
• - Frequency ranges: 9.
• - Gain/attenuation parameters: from +6 dB to -18 dB.
• - Q factor: from 1/40 octave to 2 octaves.
• - Filters: gentle from +6 dB to -18 dB, cut -12 dB per octave.
• Delay: d