Fohhn MA-4.100

  • BỘ KHUẾCH ĐẠI CHUYÊN NGHIỆP
  • Loại sản phẩm : Khuếch đại 4 kênh
  • kênh đầu vào: 4
  • đầu ra bộ khuếch đại: 4
  • Công nghệ mạch : Class D
  • Công suất đầu ra 4Ω :  4 x 65W
  • Công suất đầu ra 8Ω :  4 x 35W
  • trở kháng tối thiểu: 4 ohm
Danh mục: Từ khóa:
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Địa điểm phân phối
Yêu cầu bảo hành

Fohhn MA-4.100 is a compact 4-channel digital power amplifier for media applications and small sound system solutions. The DSP amplifier with a 4 × 4 matrix is ideal for, e.g. equipping conference and training rooms as well as for installation in media steles. It can be easily integrated into media controls via RS-485 and is effortlessly configured with the Fohhn Audio Soft via a USB-C socket.

Main features

  • 4 × 100 W peak / 4 ohms
  • Available in two variants: With Analog Inputs (MA-4.100 ANA) or Dante Input (MA-4.100 DAN)
  • Compact dimensions: 9.5″ / 1 U, 170 mm installation depth
  • Mounting brackets for rack included
  • Switchable phantom power on each input channel
  • Two freely programmable switching contacts
  • With Fohhn Airea connection
  • Can be remotely operated and controlled over Fohhn Net
  • Q-SYS Plugin available in combination with Fohhn NA-4 or ABX-6
  • Temperature controlled, low noise fan
  • Auto Power Save for minimum standby power requirements
  • Fohhn speaker presets ensure maximum safety, reliability and excellent sound quality

Technical data

Physical features

  • dimensions (w × h × d): 2 U / 19″, 485 x 89 x 425 mm
  • weight: 9.8 kg

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Electronic features

  • 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% (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 300 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 × 65 W / 4 ohms, 4 × 35 W / 8 ohms (1 kHz, THD+N < 1 %)
  • minimum impedance: 4 ohms
  • input channels: 4

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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 4th 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

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Remote control and remote monitoring

  • remote control: Fohhn Net over RS-485, Fohhn Audio Soft, USB-C
  • remote monitoring: temperature, protect, signals, power supply, Fohhn Net, Fohhn Audio Soft
  • switching contact: load preset, standby on / off

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Display (front)

  • ready LED: blue = power on, blue flashing = sign
  • protect LED: red = error / protect / standby
  • USB Config LED: blue = host, remote control over USB

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Connections and controls

  • mains connection: 1 × C14 IEC socket
  • switching contact 1 and 2: 1 × Phoenix 3-pin
  • Airea Net: 1 × RJ45
  • outputs: 1 × Phoenix 8-pin, max. 3.3 mm² flexibel, 3.3 mm² rigid
  • USB Config: 1 × USB-C socket

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Display (rear)

  • receive / send LED: remote control, Fohhn Net

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Input interface analog

  • inputs: 4 × analog
  • signal inputs: analog, max. signal +18 dBu, phantompower (24 V DC) switchable
  • THD: < 0,005 % typ. < 0,003 % 1 kHz 0 dBu
  • S/N ratio: > 108 dB/A
  • latency: 1,0 ms
  • frequency response: 20 Hz – 20 kHz
  • input impedance: 10 kOhms