One of the original manufacturers in the market, Nady has been supplying ALD's to venues such as cinemas, theaters, churches, lecture halls and auditoriums for almost 15 years. Our current models offer high quality and performance, and are a most cost effective solution for your medium to large area listening assistance needs. Both units also enable compliance with current ADA regulations
Features:
System operates within the 72-76 MHz band designated for auditory assistance frequencies by the FCC on one of 8 factory switchable channels
Transmitter offers full manual controls and connections (including both mic and line level inputs), automatic level control, extendible antenna, and Power ON and Audio Input level LED displays.
Any number of pocket sized ALD-800 receivers can be used with a single ALD-800 transmitter
Receivers include mini binaural earphones providing up to 130 dB SPL for hearing assistance and feature a volume control adjust, "Power ON" LED, and antenna integral with earphone cord. Single standard 9V alkaline or rechargeable NiCad or NiMH battery operation.
ALD-800 TRANSMITTER
Compact RF transmitter operating within the 72-76 MHz band designated for auditory assistance frequencies by the FCC.
• Eight factory switchable channels
• Input for line level audio
• Input for microphone
• Audio input gain control
• Automatic level control
• Extendible antenna
• AC-ALD800 9VDC regulated power supply adapter supplied
• LED power on and audio modulation indicators
OVERALL SYSTEM PERFORMANCE
Frequency Response .......... 100 Hz-15KHz ± 3 dB
Signal to Noise Ratio ..........60 dBTotal 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
ALD-800 TRANSMITTER
Mic Input ..............................Connector: 1/4“ phone jack. Impedance: low impedance, unbalanced, with 9V DC at 1 mA for condenser mic.
Line Input ............................Connector: 1/4“ phone jack.
Power Output ......................80,000 µV @ 3 meters
Controls ................................Power on/off, audio input gain adjust
Indicators ............................Power On LED, Audio Modulation LED
Antenna ................................Permanently mounted telescoping whip
Power Requirement ............9 VDC, regulated @200 mA, AC-ALD800 adapter provided
Dimensions ..........................1.25" H, 8.25" W, 4.25" D (3.175 x 20.9 x 10.8 cm)
Weight ..................................18.2 oz. (500 g.)
ALD-800 Receiver
Controls ................................Combination volume/on-off wheel
Audio Output........................250 mW max into 16 ohms
Connectors ..........................3.5 mm mini jack for earphone output
Earphones ............................Mini binaural earbuds
Antenna ................................Integral with earphone cord
Indicators ............................LED power on indicator
Sensitivity ............................2 µV for 12 dB Sinad with squelch defeated. Squelches at 10 µV for min. 50 dB S-N ratio
Mute Threshold....................8-10 µV
Power Requirement ............9V alkaline
Battery Life ..........................17-20 hours w/alkaline battery
Dimensions ..........................3.35” H, 2.75” W, .75” D (8.5 x 6.5 x 2.25 cm)
Weight ..................................2.65 oz. w/out battery (73 g.)
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