KD-AMP220

KD-AMP220

KD-AMP220

Compact Digital Amplifier and Pre-Amp

  • Mixes microphone input with selected audio source and can provide phantom power to microphone
  • RS-232 controllable volume, muting, mic mix level and more
  • Pre-amp ideal for integrating into 70V audio systems with output reflecting volume, mixing and muting settings applied
  • 20 watts per channel at 4ohm, 40 watts at 8ohm bridged

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INTRODUCTION

The KD-AMP220 is a 2×20-watt Class-D amplifier with an 8 Ω speaker output ideal for installation in presentation spaces. Input connections accommodate microphone, line level balanced/unbalanced, and line level 3.5mm stereo analog audio inputs. The output is a mix of audio from the microphone input and the selected audio input. Microphone and output volume levels may be variably controlled via IR, RS-232, or the front panel, and speaker level output may be set to bridge stereo or mono mode.

 

FEATURES

 

  • Class D 2 Channel Amplification: 20W PER CHANNEL @ 4ohm, 40W @ 8ohm BRIDGED
  • Mixing: Output is a mix of microphone and the selected audio input
  • Signal Processing of variable volume level set for each input. Variable volume, bass, and treble for output
  • Inputs: Microphone (3-pin balanced, condenser/dynamic), 6-pin balanced stereo, 3.5mm stereo
  • Phantom Power: 48V phantom power for integration with condenser microphones
  • Outputs: Pre-amp line level (6-pin balanced), speaker level
  • Speaker Level Output: Bridge, stereo, or mono modes selectable
  • Noise gate for consistent audio levels, prevention of ambient noise

ADDITIONAL FEATURES

  • Control: Front panel, RS-232, IR with external IR Sensor (included)
  • Control System Support: Compass Control® Pro ready. Fully controllable by all IR, and RS-232 supported control systems via open API
  • Compact Size: 4.84”(W) x 3.42”(D) x 1.3”(H)

SPECIFICATIONS

I/O Connections:

  • Analog Inputs: One (1) 6-pin Phoenix Connector; One (1) 3.5mm TRS Connector
  • Microphone Input: One (1) 3-pin Phoenix Connector
  • Control (Front Panel): Push Button, Rotary Knob
  • Control (Rear Panel): RS-232 via One (1) 3-pin Phoenix Connector; IR via One (1) 3.5mm TRS Connector
  • Microphone 48V Phantom Power Mode Switch: One (1) 2-Position Slide Switch
  • Output Signal Format Selector: One (1) 3-Position Slide Switch
  • Balanced/Unbalanced Analog Audio Output: One (1) 6-pin Phoenix Connector
  • Speaker Output: One (1) 4-pin/5 mm Phoenix Connector
  • 24V DC Power: One (1) Barrel (5.5 mm OD, 2.1 mm ID)

Audio Performance

  • Input Impedance: >10k Ω
  • Output Impedance: 50 Ω Analog Output; 4/8 Ω Speaker Output
  • Maximum Rated Power Output: 40 Watts
  • Frequency Response: 120 Hz to 20 kHz
  • Common Mode Rejection Ratio (CMRR): >70 dB at 20 Hz to 20 kHz
  • Signal to Noise Ratio (SNR): 80 dB (Max)
  • Total Harmonic Distortion + Noise (THD+N)L: 1% at 1 kHz; 0.3% at 20 kHz at Nominal Leve
  • Voltage Gain: 32 dB

Chassis and Environmental

  • Enclosure: Painted Aluminum
  • Dimensions (W x H x D): 8.661” x 1.299” x 4.094” (LxDxH)
  • Net Weight: 1.153 Lb
  • Operating Temperature: +32° to +104° F (0° to +40° C)
  • Operating Humidity: 20% to 90%, Non-condensing
  • Storage Temperature: +14° to +140° F (-10° to +60° C)
  • Storage Humidity: 20% to 90%, Non-condensing

Power, ESD, and Regulatory

  • Minimum Power Consumption: 5 watts
  • Maximum Power Consumption: 45 watts
  • Power Supply Input Voltage: 100-240v AC at 50/60 Hz at 0.5 A
  • Power Supply Output Rating: 24V DC at 2.71 A
  • ESD Protection: 15kV
  • Device Regulatory: CE, FCC
  • Power Supply Regulatory: CE, FCC

ACCESSORIES

  • Power Supply (qty 1) 24V/2.71A, 65W, desktop type, model KDSP60W12VC
  • Operating Instructions & Warranty card
  • 2 x L-type mounting ears
  • IR Remote Contro
  • 2 x 3-pin, 1 x 4-pin, 2 x 6-pin Phoenix Connectors
  • IR Sensor