MicroPlayer mkIII+

The MicroPlayer mkIII+ aims at playing musics, sounds, or messages in various environments such as:

• Museums
• Exhibitions
• Showrooms
• Stores
• Amusement parks
• Touristic places
• Companies
• Or any other public spaces

Download the datasheet

Interfacing and Connectivity

• Status LED
• Infrared sensor – Protocol: Sony SIRC, 12 bits, 38 kHz carrier
• SD card slot
• USB Host 2.0 Full Speed (12 Mb/s), standard “mass storage” driver, type-A receptacle
• 2 configurable buttons
• Volume knob for the amplified speaker output
• Unbalanced line-level stereo audio output on standard RCA connectors
• Headphone stereo audio output on a standard 3.5 mm (TRS) jack
• Class D amplified speaker stereo audio output on 3.81 mm pluggable terminal blocks
• 4 combined configurable opto-isolated input contacts on 3.81 mm pluggable terminal block (typical debounce time: 25 ms)
• 2 MOSFET outputs (500 mA per output, max 20 V) on 3.81 mm pluggable terminal block
• RS-232 serial link on a 3.81 mm pluggable terminal block (9600, 19200, or 38400 bauds)
• 2 power supply outputs dispatched on the pluggable terminal blocks
• External DC power supply chassis socket – Plug Ø 2.1 mm / 5.5 mm

Audio File Formats Supported

• MP3 (.mp3): MPEG-1/2 Audio Layer III, mono/stereo, 16 bits, 44.1 kHz, from 32 kbit/s to 320 kbit/s, CBR (Constant Bit Rate) or VBR (Variable Bit Rate), with or without ID3v1/2 tags¹
• Proprietary obfuscated MP3 (.mp3): to protect MP3 audio content²
• WAV (.wav): mono/stereo, 16-bit LPCM, 44.1 kHz, WAVE_FORMAT_PCM or WAVE_FORMAT_EXTENSIBLE

¹ Some ID3v1 or ID3v2.4 footer tags might cause unexpected noises at the end of the files.
² Contact Waves System for further information about this feature.

Other File Formats Supported

• TXT (.txt): text file for serial (serial.txt) and configuration (config.txt) usages – raw text format (only printable 7-bit ASCII characters) with CR/LF, LF or CR end of line characters.

Storage Devices

• File system supported: FAT32 (read/write)
• Supports long filenames limited to 63 characters maximum including extension
• Accepted storage device types:
  • SDSC cards
  • SDHC cards
  • USB flash drives
• Accepts 1000 folders maximum at the root, containing up to 999 files each

Audio Amplifiers

• Headphone output:
  • 2 × 85 mW – 32 Ω, THD+N = 0.1 %, 1 kHz
  • 2 × 110 mW – 32 Ω, THD+N = 10 %, 1 kHz
  • 2 × 200 mW – 8 Ω, THD+N = 0.1 %, 1 kHz
  • 2 × 325 mW – 8 Ω, THD+N = 10 %, 1 kHz
• Speaker output:
  • 2 × 8 W – 8 Ω, THD+N = 1 %, 1 kHz
  • 2 × 10 W – 8 Ω, THD+N = 10 %, 1 kHz
  • 2 × 15 W – 4 Ω, THD+N = 1 %, 1 kHz
  • 2 × 19 W – 4 Ω, THD+N = 10 %, 1 kHz

Power Supply

• Player power supply input:
  • Nominal voltage: 12 V DC
• Supplied mains adapter input:
  • Voltage: from 100 V to 240 V
  • Frequency: from 50 Hz to 60 Hz
• The player is protected against polarity reversal.

Current Consumption (12 V supplied)

• Typical consumption in playback with a SD card, without amplifier: 100 mA
• Recommended power supply for full use of the device – output current: 3.45 A
• Standby mode: less than 15 mA

Thermal Information

• Operating ambient temperature: from 0 to +60 °C
• Storage temperature: from -20 to +60 °C

Dimensions

• Width: 140 mm – 1/3 of a 19-inch rack
• Height: 43 mm – 1U
• Depth (with the pluggable terminal blocks): 107 mm

Weight

• 240 g (with the pluggable terminal blocks)