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User Manual for Lectrosonics DMTH4 - Digital Telephone Hybrid Click to enlarge the picture
Contents of the user manual for the Lectrosonics DMTH4 - Digital Telephone Hybrid
- Product category: Install Sound Mixers Lectrosonics
- Brand: Lectrosonics
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Lectrosonics Install Sound Mixers
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User manual for the Lectrosonics DMTH4 - Digital Telephone Hybrid contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Lectrosonics product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Lectrosonics user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Lectrosonics product will considerably shorten its lifespan!
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Product description The DMTH4 from Lectrosonics is an 3-input, 24-output matrix mixer, that allows for connecting telephone lines, video codecs, along with other audio sources, into the digital bus structure of DM Series processors. The unit treats the "non-regular" audio sources as if they were microphone or line inputs, with DSP available on both input and output, including filters and compression. Up to 128 macros can be stored in internal memory. The unit is suitable for sound reinforcement applications, recording in boardrooms, courtrooms, worship centers, distance learning systems and hotels, and wherever teleconferencing is part of the system requirements. It tackles the issue of echo being heard at the originating source (the "far end"), due to the signal from loudspeakers entering microphones at the local room, and being sent back to the "far end" location. Extensive control capability is available with an intuitive command structure to allow control with USB or RS-232 connections. The included LecNet2 software is a Graphic User Interface (GUI) designed to allow easy setup and monitoring of DM components using Windows 2000 or XP computer systems. LecNet2 includes the necessary Control Panels to configure and monitor all the DM series products plus the Venue Modular Receiver system. - 3-input/24-output digital matrix processor in a stackable configuration
- Fully integrates with DM Series processors
- Telephone, codec and auxiliary inputs and outputs
- Two acoustic echo cancellers - 126 mSec tail time
- Line echo canceller - 30 mSec tail time
- Six filters plus compressor on each input
- Six filters and compressor/limiter on each output
- USB and RS-232 interfaces for setup and comprehensive remote control
- Fully balanced audio signal flow throughout entire system
- Digital I/O ports for "daisy chaining" and to connect other LecNet 2 devices
- Proportional gain auto mixing algorithm with AutoSkew
- Simultaneous LecNet2 software and third-party control
In the Box Lectrosonics DMTH4 - Digital Telephone Hybrid AC Power Cable 2 x 12" CAT-5e Cables with RJ45 Connectors 2 x DB9 to TRS (Stereo Mini) Cable USB Cable 5-Pin De-Pluggable Connectors Software CD-ROM One (1) Year Warranty Table of Contents
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Technical parametersLectrosonics DMTH4 Specs | Frequency Response | 20Hz to 20kHz | | Dynamic Range | Input: 102dB (unweighted 20Hz to 20kHz)
Output: 105dB (unweighted 20Hz to 20kHz) | | Inputs | 5-pin Phoenix | | Outputs | 5-pin Phoenix | | Other Connectors | 6 x RJ-45 Expansion
2 x RJ-11 jacks
1 x DB-25 Logic I/O
1 x USB
1 x 1/8" TRS Stereo Mini Serial | | Input Impedance | 10kΩ | | Output Impedance | 450Ω differential @ 0dB attenuation
5Ω differential @ -40dB attenuation | | Maximum Input Level | +20dBu | | Maximum Output Level | +20dBu | | Sample Rate | 48Khz | | Phantom Power | No | | Crosstalk | Line Level -103 dB
Mic Level -101 dB | | THD + N | 0.02%, nominal input level | | Dimensions (WxDxH) | 19 x 7.5 x 1.7" (483 x 191 x 43mm) | | Weight | 3.5 lbs (1.6 kg) | | Specialties | Integrates telephone lines, video codecs and external audio sources into the digital bus structure of DM Series processors | | | | Package Weight | 9.25 lb | | Box Dimensions (LxWxH) | 24.2 x 14.4 x 6.4" |
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