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System Amplifiers
DI-4.1000
The DI-4.1000 is a digital 4-channel amplifier Made in Germany. The DSP amplifiers developed and manufactured by Fohhn offer high power density and excellent sound. The amplifiers are designed for mobile sound systems and fixed installation. They provide all the essential features and almost limitless connectivity in terms of audio inputs. Whether AES/EBU, Dante or Analogue – they offer maximum flexibility thanks to exchangeable connection modules. Corresponding speaker presets ensure optimum performance and reliability.
Main features
- Output power: 4 × 1000 W / 4 ohms / 100 V / 70 V
- Can be remotely operated and controlled over Fohhn Net
- Extensive DSP, controllable in real time with the Fohhn Audio Soft
- Temperature controlled, low noise fan
- Auto Power Save for minimum standby power requirements
- Installation size: 2 U / 19"
- Light weight, only 9.8 kg
Colours
Fohhn technologies
Technical data
Features
weight
9.8 kg
dimensions (W × H × D)
2 U / 19", 485 x 89 x 425 mm
Electronic features
Controller
Remote control and remote monitoring
Display (front)
Connections and controls
weight: net weight without optional equipment
heat dissipation: pink noise, 6 dB crest, 1/4 Pmax
Connection variants

Standard input interface (AES/EBU)
Features
signal outputs
AES/EBU link out from input
signal inputs
AES/EBU 32 kHz – 96 kHz, 16/24 bit
outputs
2 × Phoenix 3-pin AES/EBU, 1 x Phoenix 3-pin Fohhn-Net
inputs
2 × Phoenix 3-pin AES/EBU, 1 × Phoenix 3-pin Fohhn-Net
latency
0.0 ms

Input interface AES/EBU XLR
Features
signal outputs
AES/EBU link out from input
signal inputs
AES/EBU 32 kHz – 96 kHz, 16/24 bit
outputs
2 × XLR AES/EBU, 1 x etherCON Fohhn-Net
inputs
2 × XLR AES/EBU, 1 × etherCON Fohhn-Net
latency
0.0 ms

Input interface analog XLR
Features
signal outputs
analog link out from input
signal inputs
analog, max. level +15 dBu
outputs
4 × XLR analogue, 1 × etherCON Fohhn-Net
inputs
4 × XLR analogue, 1 × etherCON Fohhn-Net
latency
1.0 ms
input impedance
10 k ohm
S/N ratio
>110 dB/A
THD
<0.003 % typ., <0.0005 % 1 kHz 0 dBu
frequency response
20 Hz – 20 kHz

Input interface Dante
Features
latency
Dante +0.6 ms
inputs
2 × RJ-45 1000BASE-T Ethernet, Dante and Fohhn-Net
Integration in media control
UDP and TCP text protocol
Support for AES67
Yes

Output option terminal blocks
Features
conductor cross-section
max. 6 mm² flexible, 10 mm² rigid
outputs
2 × Phoenix 4-pin

Output option Speakon
Features
outputs
4 × Speakon