Nady ALD-800 operating instructions

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OWNER'S MANUAL

ASSISTIVE LISTENING SYSTEM

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Multi Channel RF Wireless

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

SETTING UP THE TRANSMITTER

Your Nady ALD-800 requires minimum installation. Simply place the transmitter on any flat surface,
connect your mixing board to the transmitter’s back panel input (See CONNECTING AUDIO
INPUT below), connect the included power supply (as explained below), and the transmitter is
ready to broadcast to any number of ALD-800 receivers operating on the same channel.

POWERING THE TRANSMITTER

Connect the AC adapter provided into the 9V DC jack 1 on the back panel of the transmitter. Plug
the other end into an AC wall socket. Press power switch 2 . The “power on” LED 3 will light.

ANTENNA
Extend antenna 4 fully and position 90 degrees from top of the transmitter.

CONNECTING AUDIO INPUT

The Line In jack 5 on the rear panel lets you connect the ALD-800 to your mixing console. This
1/4" mono phone jack accepts an unbalanced line level audio source at zero dBm nominal signal
level. If your mixer has XLR outputs only, you will need an XLR-to-phone plug adapter, available from
most electronics stores and music equipment stores.

USING A MICROPHONE
The Mic jack 7 on the front panel allows wireless cueing of on stage performers.

IMPORTANT: This 1/4” mono phone jack is designed for an electret condenser microphone, and
9V DC power is present at the input jack. If you wish to use a conventional dynamic microphone,
at least 20 dB more gain is required, and a preamp should be used. If a preamp is used, be sure
to have a blocking capacitor (1 mfd) between the preamp output and the E03 mic input. If a
dynamic mic is plugged into the mic input by mistake, there should be no damage because the
current is limited to 1.0 mA. If you have any questions, contact Nady Customer Service (510/652-

2411) or your Nady dealer.

AUDIO INPUT GAIN ADJUSTMENT
You can quickly adjust the transmitter to obtain optimum performance with the input gain control

8 . The audio modulation indicator LED, marked “TX” 6 will increase in brightness as the control

is turned clockwise, and decrease in brightness as the control is turned counterclockwise. When
the “TX” LED is flashing during transmission, the transmitter is broadcasting properly. (If the LED
stays off continuously or barely flashes at all, the input gain needs to be increased. If the LED stays
on continuously and does not flash during modulation, the input is overloading and needs to be

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Congratulations on your purchase of the Nady ALD-800 Wireless RF Personal Listening Assistance
System. The Nady ALD-800 is the most cost-effective way to provide high quality listening assis­tance in compliance with the Americans with Disabilities Act (ADA), which requires public facilities
such as movie theatres, etc. to make listening assistance systems available to their audiences. The
system is designed to be very easy to use and requires no installation.

The ALD-800 is specifically designed to be installed quickly and easily by virtually anyone.

In addition to its ease of use, the ALD-800 provides outstanding sound quality. The system con­sists of one wireless transmitter and one or more pre-tuned portable wireless receivers. The
transmitter features eight factory switchable channels; the receivers are single channel units that
operate on one of eight channels in the 72-76 MHz band, with wide band modulation for quality
audio.

Unlike infrared listening systems, the ALD-800 can be used outdoors and indoors in bright light
without affecting performance.

The ALD-800 is perfect for virtually any application, from a small meeting room, or a mid-sized
house of worship, to a large cinema. The ALD-800 provides high quality hearing assistance to
any number of audience members, without seating restrictions.

The ALD-800 system has a wireless operating range of 300 feet. The transmitter connects to the
line out or tape out from a venue’s existing sound system, and broadcasts the audio as an FM
radio signal. The transmitter can also be used with an optional microphone.

Audience members who desire listening assistance use a pocket size Nady ALD-800 receiver
with adjustable volume control and ergonomic, high performance earphones. The ALD-800 sys­tem is expandable—one transmitter will provide audio to a limitless number of receivers.