Adastra Induction Loop Amplifier - LA-300 mkII
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eBayAdastra LA-300 Induction Loop Amplifier LA-300 - Hearing Assistance Amplifier
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Product Information
Full details
This guide is for users of the Adastra LA-300 mkII Induction Loop Amplifier, designed to assist hearing aid users in various environments. The key benefit is providing clear audio to those with hearing aids. A consideration is that it requires a compatible hearing aid with a "T" switch. This amplifier features front panel controls for fine-tuning, 3 mic/line channels, and is rack-mountable for professional installations.
All features
| Model Part Number | LA-300 mkII |
|---|---|
| Brand | Adastra |
Extended Product Information
FAQs
What is the frequency response of the amplifier?
The frequency response is 50Hz - 5kHz (±3dB).
What type of hearing aids are compatible?
Hearing aids fitted with a "T" switch.
How do I adjust the volume?
Use a screwdriver to adjust the channel volume controls on the front panel.
Where can I mount the amplifier?
It is designed to be mounted in a 19" rack.
What is the signal to noise ratio?
The signal to noise ratio is 75dB (line) and 60dB (mic).
Can I use multiple audio sources?
Yes, it has 3 mic/line input channels.
How do I clean the amplifier?
Use a soft, damp cloth. Avoid using harsh chemicals.
What is the purpose of the alarm contacts?
The alarm contacts are for the built-in siren.
Troubleshooting
No audio output.
Check power connection, input connections, and loop cable. Verify that the hearing aid is set to the "T" position.
Distorted audio.
Reduce input levels, adjust bass and treble controls, and check for loop cable interference.
Weak signal.
Increase loop current, move the loop cable and adjust the sensitivity of the hearing aid.
Alarm not functioning.
Verify the alarm contacts are correctly connected and that the siren is functioning.
Pros and Cons
Pros
- Enhances audio clarity for hearing aid users.
- Offers flexible input options and audio controls.
- Provides reliable performance in various settings.
- Designed for easy rack mounting.
- Includes tamper-proof controls to prevent unwanted adjustments.
Cons
- Requires a compatible hearing aid with a "T" switch.
- Front panel controls require a screwdriver for adjustment.
- Frequency response may not cover the full audio spectrum for some uses.
Setup, Compatibility & Care
- Installation: The unit is 19" rack mountable. Ensure proper ventilation.
- Connections: Connect audio sources to the mic/line inputs.
- Loop Cable: Install a loop cable around the desired area. The loop current can be adjusted.
- Power: Connect the IEC power cable and switch the unit on.
- Compatibility: Compatible with hearing aids fitted with a "T" switch.
- Care: Clean the unit with a soft, damp cloth. Avoid harsh chemicals.
- Adjustments: Use a screwdriver to adjust the channel volume, bass & treble and loop current level controls.