Product Description
The Digital Audio Machine is a studio quality MP3 and WAV player with all the interfaces sound contractors need for professional installations.
The Digital Audio Machine stores its sounds on Compact Flash cards, so playback is virtually instantaneous. You can create and edit your audio using your desktop PC. Then just copy the clip to the media or transfer it via the Ethernet option.
Clips may be triggered using external contacts or pushbuttons, serial RS-232 messages, Ethernet, playlists or the built-in real time scheduler. The unit can also simply loop continuously when powered. It fits almost anywhere, from dashboard to rack, and even works in high vibration environments, such as roller coasters! Power it with a 12V battery or the included AC adapter.
The Digital Audio Machine is also a terrific player for GPS-triggered transportation applications. When connected to a GPS receiver (see the accessories page), the Digital Audio Machine steps through cues automatically as it moves through user-defined geographical zones!
Product Information
Product
Digital Audio Machine
Part Number: AM4-EA
Ethernet
Additional IO :Stereo Amplifier
Part Number: AM4-EB
Ethernet
Additional IO :Balanced Audio and S/PDIF Outputs
Part Number: AM4-MM
Additional IO :GPS Antenna (Magnetic Mount)
Part Number: AM4-BH
Additional IO :GPS Antenna (Bulkhead Mount)
Audio
Output
Stereo unbalanced RCA phono connectors
DAC Resolution
64 Bits
Deviation from Linear Phase
+/-.05 dB
Total Harmonic Distortion
0.008%
Dynamic Range (A-weighted)
94dB
Inter-channel Isolation
90dB
Inter-channel Gain Mismatch
0.1 dB
Frequency Response
10 to 20 Khz +/-0.1 dB
Maximum Phase Non-Linearity
5 degrees
Line Output Level Unbalanced
10K Ohm Minimum, 100pF Maximum
Media
Compact Flash (included; contact us for current size)
If purchasing your own, please read How Much Compact Flash?
Playback Time
Many hours, depending upon media
For more info see How Much Compact Flash?
Audio Format
MP3 Fixed or Variable bit rate;
16 bit linear PCM (WAV)
Amplifier
Provided on AM4-EA
Output Power
20 watts into 8 Ohms (15 watts when operated from a 12V supply or vehicle battery.)
THD
Typical THD is 1% at nominal power.
Pro Audio Option
Provided on AM4-EB
S/PDIF Digital Audio Output
IEC958 (Stereo), RCA phono connector.
Balanced Output Level
+4dB
Balanced Output Connector
Dual Female XLR and 1/4 inch phone jack (combo)
Ethernet Option
Provided on AM4-EA and AM4-EB
Protocols
FTP file transfer protocol
UDP control protocol
100 Base-T
RJ-45
Control
Parallel
DB-37F parallel inputs select clips, play, stop, loop, mute
Contact closure or voltage inputs
Serial
DB-9M RS-232, 9600 N,8,1
Real Time Clock
Triggers files or playlists by day, date, time of day
Ethernet
UDP control (see option E)
Response Time
Less Than 33 msec
Buttons
Font panel test button
Display
Font panel bi-colored LED
Switches
Ground lift, contact/voltage control, GPS Enable, Write Protect
Pots
Audio Volume Control
GPS
NMEA 0183 compatible protocol on RS-232 input
Docs
Description
Download
Software
Description
Download
AMI Terminal
Send serial or ethernet commands to Alcorn McBride products. Good for controlling hardware and troubleshooting.
Schedule Builder
This handy utility make sit easy to make real time schedules for Alcorn McBride products.
These tools help you access the advanced features of your product. Visit our Software page for more selections.
Firmware
Product
Version
Download
Alcorn McBride provides the latest firmware for your product at no charge. To learn how to check your firmware version and upgrade it, visit our Firmware page.
The Input Expander breaks out the binary inputs on your Digital Audio Machine, bringing all the signals to an easy-to-wire terminal block. It gives you direct access to up to 15 playback selections, stop, play, pause and mute. Attach the input expander to a DIN rail or even a wall. When used with a power supply it works up to 1000 feet away!
We offer two GPS Receiver kits, one that mounts magnetically, and another that is permanently installed. Both come with a harness designed to provide them with power and connect them to the serial input of your player.
If you plan to use GPS Builder’s ability to capture geographic data from the GPS receiver during programming (as opposed to just clicking point on the map), you should also order a GPS/USB cable. Since it’s just used during programming, you’ll only need one of these, no matter how many GPS receivers you’re installing.
Part Number
Description
SMK
Surface Mount Kit for all AM4 models
RMAM4-1
Single Unit Rack Mount Kit for AM4
GPS-AM4-MMKIT
Magnetic Mount GPS Antenna Kit for AM4 (Includes antenna and all necessary cables)
GPS-AM4-BHKIT
Bulkhead Mount GPS Antenna Kit for AM4 (Includes antenna and all necessary cables)
GPS-AM4-BHKIT
Bulkhead Mount GPS Antenna Kit for AM4 (Includes antenna and all necessary cables)
GPS Program Kit
Bulkhead Mount GPS Antenna Kit for AM4 (Includes antenna and all necessary cables)
GPS Program Kit
GPS Programming Kit – Includes Magnetic Mount GPS Antenna, USB Adapter for Computer, and Software
CF32GB
32GB CompactFlash Card
CF64GB
64GB CompactFlash Card
CF128GB
128GB CompactFlash Card
CFAUSB
Compact Flash Adapter for Computer USB Port
INPUTEXP
Input Expansion Kit. DIN-Rail terminal board, DB37 cable, and 24VDC power supply included.
KDB37M
DB-37 Male Connector Kit with Housing
PS12V220S
Spare Universal Power Supply 12V/2Amp for AM4, AM4-EB, AM4-MM, and AM4-BH
IOBB
I/O Breakout box includes DB37 cable and 37-contact terminal block
DIN19
DIN Rail for mounting IOBB or INPUTEXP in standard equipment rack
DBWP-10
Serial Cable, 9 Pin Female to 9 Pin Female, 10 Feet
DBWP-25
Serial Cable, 9 Pin Female to 9 Pin Female, 25 Feet
USBSER
USB to RS232 Serial Adapter for Computer
PS12V220S
Spare Universal Power Supply 12V/2Amp for AM4, AM4-EB, AM4-MM, and AM4-BH
PS18V220S
Spare Universal Power Supply 18V/3Amp for AM4-EA
