DSP 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 processing, 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

Possible interfaces

Technical data

Loudspeaker features

weight
9.8 kg
dimensions (W × H × D)
2 U / 19", 485 x 89 x 425 mm

Electronic features

amplifier technology
Class D
amplifier outputs
4
DSP routing (matrix)
4 × 4
frequency response
20 Hz – 20 kHz
signal/noise ratio
>100 dB/A
THD+N
0.08 % (1 kHz, 8 ohms, 3 dB below clipping)
dynamic range
>120 dB
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 70 W, auto power save 10 W, standby 5 W, power on/off switch / remote power off 2 W
heat dissipation
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
output power
4 × 1000 W / 4 ohms / 100 V / 70 V, 4 × 500 W / 8 ohms (1 kHz, THD+N <1 %)
minimum impedance
3 ohms
input channels
4

Controller

digital signal processors
2
independent limiters
20
input DSP processing_Filter
1
FIR filter
yes
input gain
-80 dB – +12 dB
routing gain
-80 dB – +12 dB
output gain
-80 dB – +12 dB
EQ
8 × 10 fully parametric filters, Gain +/-12 dB, Frequency 10 Hz – 20 kHz, Q 0.1 – 100
selective 3-band limiting
bass / mid / high
limiter / compressor
8
noise gate
8
delay
4 × 0 – 350 ms (0 – 120 m) outputs, 4 × 0 – 88 ms (0 – 30 m) inputs
X-over
8 × Linkwitz-Riley 4th order (24 dB/octave), high pass 10 Hz – 20 kHz, low pass 10 Hz – 20 kHz
user presets
100
speaker presets
100
system latency
1.2 ms
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

Remote control and remote monitoring

remote control
Fohhn-Net over RS-485, Fohhn Audio Soft
remote monitoring
temperature, protect, signals, power supply, Fohhn Net, Fohhn Audio Soft
fault message contact
1 × Relais, 2 × UM, 3-pin Phoenix
switching contact
load preset, standby on/off

Display (front)

receive / send LED
remote control, Fohhn-Net
ready LED
blue = Power on, blue flashing = Sign
protect LED
red = Error / Protect / Standby
input LED
4 × input signal LED, white = signal (> -50 dBFS), red = clip (> -3 dBFS)
output LED
4 × output signal LED, white = signal (> -50 dBFS)

Connections and controls

controls
Power on/off Switch
remote power in / out
2 × Phoenix 2-pin
power supply for extern small devices 24 V / 5 W
1 × Phoenix 2-pin
24 V / 5 W power LED
green = on
mains connection
1 × PowerCON
fault contact (open/close)
1 × Phoenix 3-pin
switching contact 1 and 2
1 × Phoenix 3-pin

Connection variants

Standard input interface (AES/EBU)

Features

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
signal outputs
AES/EBU link out from input
signal inputs
AES/EBU 32 kHz – 96 kHz, 16/24 bit

Input interface AES/EBU XLR

Features

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

Input interface analog XLR

Features

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
signal outputs
analog link out from input
signal inputs
analog, max. level +15 dBu

Input interface Dante

Features

inputs
2 × RJ-45 1000BASE-T Ethernet, Dante and Fohhn-Net
Support for AES67
Yes
latency
Dante +0.6 ms

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

Contact us

+49 7022 93323-0

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