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Alcorn McBride MP3 Audio Machine User’s Manual • Rev H • April 2, 2004
Audio
DAC Resolution:
16 bits
Deviation from Linear phase:
+/-0.5dB
Total Harmonic Distortion:
0.003%
Dynamic Range (A-weighted):
94dB
Inter-channel Isolation:
90dB
Interchannel Gain Mismatch:
0.1dB
Frequency Response:
10 to 20 Khz +/- 0.1 dB
Maximum Phase Non-Linearity:
5 degrees
Line Out Level:
Unbalanced, 4.07V P-P max (3.70 typical) into 20K
Speaker Power
10W into 8Ohms into each channel
Playback Time
WAV Files:
Compact Flash Card Playback Times: 16bit Stereo WAV files require 10Mbytes/minute, mono require 5
Mbytes/minute.
MP3 Files:
Approximately 16minutes MP3 128Mbps audio from included 16Mbyte Compact Flash card.
MP3’s have approximately 10 times the playback time of CD quality files. This is based on 128Mbps or
160Mbps encoding, which requires about 1Mbyte storage per minute of audio.
Trigger Response Time
Less than 33 msec.
Power
8 VDC to 16.0 VDC at 1 Amp max using removable Compact Flash Card.
Connector: 2.5 mm I. D., 5.5 mm O. D., 10 mm shaft length.
Adapter for 100/250Volts provided.
50/60 Hz, 3A max.
Physical
5.5” x 1.75” x 11”
4 lbs
0
o
C (32
o
F) to 38
o
C (100
o
F), free air circulation.
Compact Flash Card hard discs used above 27
o
C (80
o
F) require an external fan.
0-90% relative humidity, non-condensing
10 g max Vibration (with removable Compact Flash Card Har d Disc)
20 g max Vibration (with removable Compact Flash Card)
Switches and Indicators
Front panel test button.
Front panel bi-color LED.
Side mounted DIP switch for ground lift.
Side mounted DIP switch for input type: contact/voltage.
Rear panel screwdriver dial volume control
Connectors
Rear Panel DB-9M serial I/O connector.
Rear Panel DB-37F parallel and serial I/O connector.
Rear Panel RCA type Phono connectors for S/PDIF output, left and right audio.
Rear Panel Barrel connector (2.5 mm x 5.5 mm x 10 mm) for power.
Rear Panel Screw Terminal Speaker Connectors (10Watts)
Part Numbers
MP3 Audio Machine with 100/250Volts 50/60 Hz, 3A switcher , Part Number 234-100514
Flush Mounting Bracket Kit, Part Number 320-100375
Rack Mounting Bracket Kit, 1 Unit, Part Number 320-100372
Rack Mounting Bracket Kit, 2 Unit, Part Number 320-100373
