Fohhn MA-4.100 ANA - Matrix DSP Amplifier

Specifications

weight

1.2 kg

dimensions (W × H × D)

1 U / 1/2 19", 211 × 45 × 170 mm

Electronic

amplifier technology

class D

amplifier outputs

4

DSP routing (matrix)

4 × 4

frequency response

20 Hz – 20 kHz

signal/noise ratio

>103 dB/A

THD+N

0,08%

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) 65 W, Idle state 7 W, Auto Power Save 2 W, Standby 2 W

heat dissipation

max. 15 W, 51 BTU/h, 13 kcal/h

temperature range

0 – 40 °C

cooling

temperature-controlled fan

output power

4 x 65 W / 4 ohms, 4 x 35 W / 8 ohms (1 kHz, THD+N < 1 %)

minimum impedance

4 ohms

input channels

4

Controller

digital signal processors

1

independent limiters

20

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 – 145 ms (0 – 50 m) outputs, 4 × 0 – 30 ms (0 – 10 m) inputs

X-over

8 × Linkwitz/Riley 4. order, 24dB/oktave, Highpass 10 Hz – 20 kHz, Lowpass 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

Analog or DANTE 32 kHz – 96 kHz, 16/24 bit, AES/EBU

Input DSP processing

yes

Remote control and remote monitoring

remote control

Fohhn-Net over RS-485, Fohhn Audio Soft, USB-C

remote monitoring

temperature, protect, power supply, Fohhn Net, Fohhn Audio Soft

switching contact

Load preset, Standby On/Off

Display (front)

ready LED

blue = Power on, blue blink = Sign

protect LED

red = Error / Protect / Standby

USB Config LED

blue = Host, remote control over USB

Connections and controls

outputs

Phoenix 8-pin, max. 3.3 mm² flexible, 3.3 mm² rigid

USB Config

1 × USB-C socket

Airea Net

1 × RJ45

mains connection

IEC socket

switching contact 1 and 2

1 × Phoenix 3-pin

Display (rear)

receive / send LED

Remote control, Fohhn-Net

Input interface analog

THD

< 0,005 % typ. < 0,003 % 1 kHz 0 dBu

signal inputs

Analog, max. signal +18 dBu, phantompower (24 V DC) switchable

inputs

4 × analog/mic

input impedance

10 kohm

frequency response

20 Hz – 20 kHz

latency

1,0 ms

S/N ratio

> 108 dB/A