LT-800 Troubleshooting

Troubleshooting

The LT-800 has no power

Make sure the LA-207 power supply is connected to a power source and is connected to the jack marked “Power Input”. Make sure the POWER button is pressed in.

There is no audio or the audio level is too low

Make sure that your audio source is properly connected to Input 1 and/or Input 2. The Input 1 or Input 2 switches must be in the correct position for the appropriate input level. For example: if you are using the output of a mixer on Input 2, the switch should be in the -10 dBu position.

If it were to be in the +10 dBu position, the level would be too low. Also, check the Input knob to ensure it is properly adjusted. You should be able to see the VU meter deflect on Input 1 or Input 2 corresponding with the input level of the audio source. You can listen to the audio source by connecting a headset to the front panel jack and adjusting the Monitor

volume control.

If the level of audio into the transmitter is low and can’t be corrected using the level input switches, the audio processor can be turned on to boost the signal (see page 8 to set, page 12 for description of Process Mode).

The audio is distorted

Check to make sure you have the input level select switches in the proper position. You may be providing too much audio level for the input stage to handle. Make sure the SQ mode is set correctly on both the LT-800 and the receivers you are using. If your receivers do not have SQ, make sure the SQ mode is turned off (see page 8).

There is hum in the audio

Make sure you have properly grounded the audio source to the LT-800. Check the connections from the audio source to the LT-800. If you can, try to use a balanced audio source - this will reduce the chance of creating hum. Connect a ground wire from the LT-800 to ground and/or to the ground of the source audio.

There is a tone

The Test Tone button has been pressed (its LED light is on). Push the Test Tone button to turn off the tone.

The Audio Input 1 sounds “tinny”

If you are using an unbalanced audio source, make sure Pin 3 on the XLR or the ring on the ¼” plug is grounded (see page 9).

I cannot pick up the signal on the receiver

Check to make sure that they are on the same channel. Make sure the LT-800 has

an antenna connected. Ensure that the receiver has an antenna (for portable products the headset is the receiving antenna).

I can pick up the signal on the receiver, but it sounds like it’s not tuned in

Check to make sure the transmitter and receiver are on exactly the same channel. It’s a good idea to lock the channels once they have been set. To lock the LT-800, press the UP button for 3 seconds (see page 10).

LT-800-150 specifications

Listen Technologies LT-800-150 is a robust and versatile transmitter designed primarily for assistive listening applications. It is a pivotal component of the Listen Technologies assistive listening systems, allowing users to experience clear audio in various environments, such as theaters, churches, conference rooms, and other public venues.

The LT-800-150 operates in the 72-76 MHz frequency range, which is specifically allocated for assistive listening devices, providing reliable audio transmission without interference. This wide frequency range ensures compatibility with a myriad of receivers, enabling a seamless experience for users with hearing impairments. The device offers a power output of 150 mW, ensuring a strong and clear signal that can cover a large area, making it ideal for spacious venues.

One of the standout features of the LT-800-150 is its exceptional audio quality. The transmitter is equipped with a balanced XLR microphone input, allowing users to connect a variety of audio sources, such as microphones or sound systems. This flexibility ensures that whether it's a live performance or a pre-recorded presentation, the audio remains crystal clear for the audience.

The LT-800-150 also supports multiple channels, allowing several transmitters to operate simultaneously without cross-interference. This characteristic is particularly valuable in environments where multiple events or services occur concurrently, enabling each to cater to the specific audio needs of their attendees.

User-friendly design is another hallmark of the LT-800-150. The device features a simple interface with LED indicators that provide users with real-time feedback on power, audio activity, and other essential functions. Additionally, it comes with a built-in audio compression feature, which helps to optimize sound quality and maintain consistent audio levels.

Built for durability, the LT-800-150 is constructed with high-quality materials, making it suitable for frequent use in various settings. Its compact design means it can be easily integrated into existing audio setups without taking up significant space.

In summary, the Listen Technologies LT-800-150 is a reliable and effective solution for assistive listening. With its powerful output, excellent sound quality, and user-friendly features, it stands out as an essential tool for ensuring accessible audio experiences for all individuals, particularly those with hearing challenges. Whether in a public space or at a private event, the LT-800-150 delivers superior performance that enhances communication and inclusivity.

Listen Technologies LT-800-150 manual LT-800 Troubleshooting

Models: LT-800-150