Video of ALS72.9:

Features:

• Peavey ALS 72.9 Mhz Assisted Listening System Transmitter And Four Receivers With Ear Buds
• Frequency Response 100Hz – 15 KHz, +/- 3dB
• Signal-to- Noise Ratio 60dB
• Total Harmonic Distortion <0.5%
• RF Carrier Frequency between 72-76 MHz
• Frequency Stability +/- 0.005%
• Modulation FM +/- 75KHz max
• Operating Range Up to 300 ft. line of sight

Transmitter

• Mic Input – Connector: ¼” phone jack, Impedance: low impedance, unbalanced, with 9V DC at 1 mA for condenser mic.
• Line Input – Connector: ¼” phone jack, Impedance: 100 K, unbalanced.
• Power Output – 80,000 uV @ 3 meters.
• Controls – Power ON/OFF, audio input gain adjust
• Indicators – Power ON LED, Audio Modulation LED
• Antenna – Permanently mounted telescoping whip
• Power Requirement – 9V DC, regulated @ 200 mA, AC/DC adapter provided
• Dimensions – 220 x 121 x 43mm
• Weight – 19.5 oz (600g)

Receiver

• Controls – Combination VOLUME/ON-OFF wheel
• Audio Output – 250 mW max into 16 ohms
• Connectors – 3.5mm mini jack for earphone output
• Earphones – Mini binaural ear buds
• Antenna – Integral with earphone cord
• Indicators – LED power on indicator
• Sensitivity – 2 uV for 12 dB Sinad with squelch defeated, Squelches at 10 uV for min. 50 dB S-N ratio
• Mute Threshold – 8-10 uV
• Power Requirement – (2) AA Batteries
• Battery Life – 17-20 hours with alkaline battery
• Dimensions – 110 x 60 x 20 mm
• Weight 2.75 oz without batteries (80g)

Peavey Assisted Listening Transmitter
The transmitter operates on the 72-76 MHz auditory assistance frequencies. Transmitted field strength shall not exceed 8000 uV/m at 30 meters. Maximum FM deviation should not exceed 75 KHz. Transmitter signal pre-emphasis is 75 uS. Frequency stability is controlled by a phase locked loop synthesizer with crystal reference and accurate within +/-.0005% over 0-50 degrees C. The transmitter provides a permanently mounted telescoping whip antenna. The FCC approved transmitter is powered by a UL and CSA listed AC wall transformer providing 9V DC input to the transmitter via a 3.5mm DC jack. The transmitter includes a ¼” line-in jack, mounted on the rear panel and ¼” electret condenser microphone jack with 9V DC power (at 1.0 mA), and mounted on the front panel. Also included, is an adjustable audio level control and a red LED “Power On” indicator.

Peavey Assisted Listening Receiver
The receiver operates on a single frequency in the 72-76 MHz auditory assistance band. Frequency stability is controlled by a phase locked loop synthesizer with crystal reference and accurate within +-.005% over 0-50 degrees C. The receiver de-emphasis is 75 uS. The receiver provides a 3.5 mm headphone output jack mounted on the top panel. The receiver is powered by (2) AA batteries. The receiver has an OFF/ON/VOLUME control mounted on the top panel, LED lamp to indicate battery strength, and an antenna shall be integral to the earphone/ear bud cord

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Features Of ALSR 72.9:

• Peavey ALSR 72.9 Mhz Assisted Listening Receiver Body Pack for ALS 72.9 System
• Frequency Response 100Hz – 15 KHz, +/- 3dB
• Signal-to- Noise Ratio 60dB
• Total Harmonic Distortion <0.5%
• RF Carrier Frequency between 72-76 MHz
• Frequency Stability +/- 0.005%
• Modulation FM +/- 75KHz max
• Operating Range Up to 300 ft. line of sight