Assistive Listening System ALS700

Assistive Listening System ALS700 brings enhanced audio to classrooms, labs, and group learning spaces. Designed for educational settings, the ALS700 helps students hear clearly—especially those with listening challenges.

System Components & Purpose

ALS700 is designed to improve listening clarity for students in classrooms, libraries, or computer labs. It’s especially helpful where distance or noise make hearing difficult.

• 1 transmitter
• 6 receivers
• 6 mono earbuds (ALSH700 on‑ear headphone option sold separately)
• 1 carry case for portability and protection

Why Classrooms Use ALS700

• Supports up to 6 students with clear audio transmission
• Doubles as a support tool for students with mild hearing or focus challenges
• Portable and classroom‑friendly design with included carrying case
• Easy to set up — plug in, power on, students tune in
• Reduces teacher strain since less voice projection is needed

Technical Specifications

• Dimensions (system case): 18″ L x 4″ H x 13″ W
• Weight: 5.7 lbs
• Frequency Response: 100 Hz – 8 kHz
• Signal to Noise Ratio: 41 dB total
• Harmonic Distortion: ≤ 0.5%
• RF Carrier Frequencies: Channel 1 = 75.5 MHz, Channel 2 = 75.9 MHz
• Frequency Stability: ± 0.005%
• Operating Range: Up to 150 ft (line-of-sight)
• Transmitter Input: ¼″ phone jack (mic & line level)
• Transmitter Output Power: 13 dBm
• Power: 5 V DC @ 200 mA (adapter included)
• Receiver Output: 100 mW with 3.5 mm jack for earbuds / headphones
• Earbuds: Mono design, included with system
• Receiver Sensitivity: 3 µV for 12 dB S/N, squelch at 10 µV, mute threshold 5–8 µV
• Power (receivers): 3 × AAA batteries each
• SKU: ALS700

Usage, Setup & Best Practices

• Place the transmitter centrally or with line‑of‑sight to students
• Plug teacher mic or audio source into ¼″ input jack
• Each student powers on their receiver and connects with the provided earbuds
• Use “ALSH700” on‑ear headphones for an alternate audio option (sold separately)
• Keep spare batteries and earbuds on hand for maintenance

Care & Maintenance

Store in the included carry case when not in use. Use soft cloth to wipe the case or equipment. Replace batteries and earbuds regularly. Avoid exposure to moisture or direct sunlight. Ensure transmitter and receivers are powered down before transporting.