Fohhn DI-2.2000 AES - Digital High-Performance Amplifier

1003267

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The DI-2.2000 has an output power of 2000 W / 4 ohms per channel, four input- and two output...
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Fohhn Digital High-Performance Amplifier



The new DI-Series digital amplifiers have been developed and manufactured in house by Fohhn in Germany. At every stage of development, new intelligent technologies have been implemented. The DSP-controlled amplifiers perform at the highest level and guarantee maximum operational reliability, highest power density and excellent sound. Since 2002, Fohhn has been developing extremely high quality, reliable digital electronics that have been consistently incorporated into the company’s own product lines. The DI-Series amplifiers represent 15 years of know-how in digital electronics, with a great many customer wishes brought to fruition as a result. Developed for mobile sound reinforcement applications and fixed installations, the amplifiers offer all the essential features plus virtually unlimited connectivity with regard to audio signal inputs. Even if you opt right now for an AES/EBU, Dante™, Optocore or Analog option, you are not permanently committed: The optional input interfaces can be changed, as required, customizing your amplifier to suit the relevant digital or analogue network. Extensive DSP input and output processing enables you to intelligently adapt your loudspeaker systems to the particular sound reinforcement situation and room acoustic. All DSP functions can be controlled in real time using FOHHN AUDIO SOFT. The DI-2.2000 has an output power of 2000 W / 4 ohms per channel, four input- and two output channels. It has a compact 2U / 19“ enclosure and weighs just 9.4 kg. The amplifier works extremely quietly and its fans are not used while idling. 




Important features at a glance:

- Developed for mobile applications and fixed installations

- Network compatible, remote control, remote monitoring

- Extensive DSP input and output processing

- Input options: AES/EBU (terminal block or XLR), Dante™, Optocore or Analog

- Output options: terminal block or Speakon connectors

- Microprocessor-controlled universal power supply, 100-240 V AC, with Power Correction Factor (PFC) and sensory functions for mains voltage, power consumption and temperature

- Auto Power Save for fan-free idling, temperature-controlled fans

- Two configurable switching contacts, one fault contact

- Performance presets for all relevant Fohhn loudspeakers

- Up to 10 seconds peak power



Virtually unlimited connectivity

The DI-2.2000 is available with a range of different connection options. Input options include AES/EBU (terminal block or XLR), Dante™, Optocore or Analog (XLR). For outputs, you can choose between terminal blocks and Speakon connectors. Depending on the sound reinforcement requirement, the optional input and output interface modules can be swapped over. The amplifier is equipped as standard with digital AES/EBU inputs and terminal blocks. 



Innovative power electronics

At the heart of the DI-2.2000 is the in-house developed, digital, high-performance power supply. As with all amplifiers, this is largely responsible for the sound. It constantly analyses the supply voltage and processes it accordingly (Power Factor Correction). The power supply gives the CLASS D amplifier an enormous performance capability of up to 4000 W within a few milliseconds and a peak duration of several seconds! Therefore, during live music applications the amplifier can perfectly reproduce the full dynamic range across the entire audible frequency spectrum at any time. The result is a significant increase in the available peak power over several seconds. Due to its integrated microprocessor, the power supply is equipped with measuring, monitoring and communications functionality. As a result, important factors such as temperature, supply voltage and capacity can be monitored and controlled accordingly. 



Intelligent control – maximum reliability


The DI-2.2000 is equipped with highly efficient DSP technology. The integrated Fohhn Audio DSPs on each input and output channel include all the essential audio tools such as 10-Band Parametric EQ, Delay, X-Over, Phase, Dynamics Processor or Tone Generator. All settings can be saved as user presets and recalled in real time. Factory setup/performance presets are available for all Fohhn loudspeakers. These provide optimal protection for the speakers and ensure the best possible sound performance for the power level. The amplifier is network compatible and can be remotely controlled and monitored. Direct access to all presets and DSP functions is therefore guaranteed at all times. Up to 254 amplifiers can be centrally controlled within a network via FOHHN AUDIO SOFT. Seamless connection to all current media control systems is also possible. An integral Power-Up Delay enables sequential (remote) power up of multiple connected amplifiers within a rack. For larger installations and live sound applications involving multiple systems, this function significantly eases the general handling. 



Quiet operation

The amplifier fans are temperature controlled and optimised for extremely quiet operation. While idling, the fans are not used (Auto Power Save function). The fan and filter foam can be manually cleaned, without the need for tools.

 


 



Specifications



 



Amplifier technology



Class D



Output power



2 x 2000 W / 4 ohms 

2 x 1000 W / 8 ohms 

(1 khz, THD+N < 1 %)



Minimum impedance



4 ohms



Input channels



4



Amplifier outputs



2



DSP routing (matrix)



4 x 2



Frequency response



20 Hz – 20 khz



S/N ratio



>100 db/A



THD+N



0.08 % (1 khz, 8 ohms, 3 db below clipping)



Dynamic range



>120 db



Remote control



Fohhn-Net over RS-485, Fohhn Audio Soft



Remote monitoring



Temperature, protect, AES/EBU signals, power supply, Fohhn-Net, Fohhn Audio Soft



Fault contact



1 x Relais, 2 x UM, 3-pin Phoenix



Switching contact



Load preset, standby on/off



Password protection



Yes



Auto Power Save



Adjustable from 1 s to 12 h, or never active



Protective circuit



Over voltage protection, over current protection, over temperature protection, short-circuit protection, DC protection, power on delay, soft start and inrush current limit



Power supply



100 – 240 V AC 50/60 Hz, universal power supply with Power Factor Correction (PFC)



Power consumption



Maximum (RMS) 1200 W, idle state 50 W, auto power save 10 W, standby 5 W, power on/off switch / remote power off 2 W



Heat loss



Maximal 200 W, 680 BTU/h, 172 kcal/h (Pink Noise, 6 db crest, 1/4 Pmax)



Temperature range



0 – 40°C



Cooling



Temperature-controlled fan



Weight



9.4 kg



Dimensions (W x H x D)



2 HE / 19″, 485 x 89 x 425 mm



Controller



 



Digital signal processors



2



Independent limiters



12



Selective 3-band limiting



Bass/mid/high



Band-specific time constants



Yes



Filter technology



80-bit double precision



Input



AES/EBU 32 khz – 96 khz, 16/24 bit



Input DSP processing



Yes



FIR



Yes



Input Gain



-80 db – +12 db



Routing Gain



-80 db – +12 db



Output Gain



-80 db – +12 db



EQ



6 x 10 fully parametric filters, Gain +/-12 db, Frequency 10 Hz – 20 khz, Q 0.1 – 100



Limiter, Compressor



6



Noise Gate



6



X-over



6 x Linkwitz-Riley 4th order (24 db / octave), high pass 10 Hz – 20 khz, low pass 10 Hz – 20 khz



Delay



2 x 0 – 350 ms (0 – 120 m) outputs, 

4 x 0 – 88 ms (0 – 30 m) inputs



User presets



100



Speaker presets



100



System latency



1.2 ms



Connections and controls



 



Controls



Power on/off switch



Mains connection



1 x powercon



Fault contact (open/close)



1 x Phoenix 3-pin



Switching contact 1 and 2



1 x Phoenix 3-pin



Remote power in/out



2 x Phoenix 2-pin



Power Supply for extern small devices 24 V / 5 W



1 x Phoenix 2-pin



24 V / 5 W Power LED



Green = on



 


 
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