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ALS-600
AL S
SSISTIVE ISTENING YSTEM
HAMIL T ON
OWNER'S MANUAL
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Thank you for purchasing the Wireless RF Personal Listening
Hamilton ALS-600
System. The system can be installed quickly and easily. It provides quality
listening assistance in compliance with the American's With Disabilities Act (ADA),
which requires public facilities with audio systems to make listening assistance
available to their audiences.
The ALS-600 provides outstanding quality. This system operates up to 300 feet
line of sight. The system is configured with one wireless transmitter and 6
portable wireless beltpack receivers. The system is configured with one channel
in the 72-76 MHz band. Eight different frequencies can be factory ordered.
The system is expandable to limitless receivers.
This Assistive Listening System is versatile. It can be operated indoors or out
without affecting performance. Excellent for any application from small
classrooms and boardrooms to auditoriums and sanctuaries. The ALS-600
offers great auditory reception without seating confinements.
The ALS-600 connects to the line out from a tape player or from an existing
sound system and broadcasts the audio as an FM radio signal.
UNPACKING YOUR ASSISTIVE LISTENING SYSTEM
following ltems:
This system will include the following Items:
• 1 ALS-600XTR Transmitter
• 6 ALS-600BP Receivers
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1 12V DC 00MA Power Adapter
• 6 ALS-600EB Earphones
•Ear
6 pair of Foam Pads
• 6 9 Volt Batteries
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• 1/4" to 1/4" Male Cable
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Instruction Manual
The system includes the
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SETTING UP THE TRANSMITTER
The 1/4'' jack on the rear of the transmitter enables you to connect directly
LINE-IN
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from an audio source such as a tape player.
MICROPHONE INPUT
the 1/4'' jack on the back panel is designed to accept either
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dynamic or electret microphones.
POWERING THE TRANSMITTER
Connect the AC adapter provided into the 12V DC jack on the back panel of the
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transmitter. Plug the other end into an AC wall socket.
Press power switch on, the power on LED will show power is getting to the
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system.
The transmitter's ''signal ''LED will illuminate to confirm that the transmitter is
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broadcasting.
ALS-600 Transmitter (Rear Panel)
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MICIN LINEIN
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75.5
MHz
ALS-600 Transmitter
DC 12V
Hamilton Electronics
POWER SIGNAL
ANT
ALS-600 Transmitter (Front Panel)
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3
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ALS-600BP RECEIVER Features & Controls
• Volume control
• LED Power On/Battery indicator
• Power On/Off Switch
• Earphone Jack
Powering The Receiver
Install a 9V battery in battery compartment on the back of the receiver.
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Observe polarity. To preserve battery life, always turn ALS-600BP receiver off
when not in use. When the Power On/Battery LED turns red or sound
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becomes weak or distorted, replace battery. The life expectancy from an
alkaline battery is 17-20 hours.
Operating the Receiver
Plug the included ALS-600EB earphones into the earphone jack on top of
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the receiver. While wearing your earphones, stand near the ALS-600 transmitter.
Turn on the receiver with the power on switch and the LED will be
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indicator
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visible.
Listen for your program source and adjust the volume control for a comfortable
listening level. If no sound is heard adjust the volume level on the transmitter.
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NOTE: You may wish to dispose of the foam ear pads after use or they can be
re-used after being washed in mild detergent, rinsed and air-dried. The foam
earpads can be ordered separately.
7 8 9
75.5
MHz
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10
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Confirming Correct Installation
* For the best performance, (and to minimize the possibility of interference from
another source), we suggest you experiment to find the minimal height the
antenna must be extended in order to perform well in your particular environment.
Using More Than One ALS-600 System
You may operate up to three ALS-600 systems in the same location. For multiple
system operation, please observe:
If operating two ALS-600 transmitters in the same location,
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use Ch.AA and HH(or GG).
If three
• operating ALS-600 transmitters in the same location,
use Ch.AA and HH(or GG)
Locate the transmitters ten feet or more away wearing ALS- BP
• those 600
,EE .
receivers.
SPECIFICATIONS
OVERALL SYSTEM PERFORMANCE
Frequency Response..........100 Hz-8kHz ±3 dB
Signal to Noise Ratio..........41 dB
Total Harmonic Distortion..< 0.5%
RF Carrier Frequencies......Eight channels between
72-76 MHz. Channel AA: 72.1, BB:
72.3, CC: 72.5, DD: 72.7, EE:
72.9, FF:75.5, GG: 75.7, HH: 75.9
Frequency Stability.............Better than .005%
Modulation.........................FM ±75 kHz max
Operating Range................Up to 300 feet line-of-sight
ALS-600 TRANSMITTER
Mic Input...........................Connector: 1/4" phone jack.
Impedance: unbalanced,
with 12V DC at 1 mA for
electret mic.
Line Input..........................Connector: 1/4" phone jack
Impedance: 100 K,
unbalanced
Power Output....................15dBm
Controls............................ Power on/off, volume adjust
Indicators..........................Power On LED,
signal LED
Antenna............................Permanently mounted
telescoping
Power Requirement. .........12V DC, regulated @ 300
mA, adapter provided
Dimensions:. .....................1.81" H x 8.27" W x 5.51" D
Weight:. .............................0.75 lb.
ALS-600BP Receiver
Controls.......................Separate volume &
on-off controls
Audio Output................ 109 mW max into 16 ohms
Connectors...................3.5mm mini jack for
earphone output
Earphones....................Mini binaural earbuds
Antenna.........................Integral with earphone cord
Indicators..................... LED power on indicator
Sensitivity.....................3
Mute Threshold........... 5-8 μV
Power Requirement.....9V alkaline
Battery Life..................17-20 hours w/alkaline
Dimensions.................. " H 2. " W x " D
Weight .........................2. oz. w/out battery
μV for 12 dB
with squelch defeated.
Squelches at 10 μV for
min. 50 dB S-N ratio
(included)
battery
3.66 x 44 0.87
89
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HAMIL T ON
HAMILTON ELECTRONICS
HAMDEN, CT 06514
www.hamiltonelectronics.com
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