Lectrosonics DMTH4 - Digital Telephone Hybrid

Lectrosonics DMTH4 - Digital Telephone Hybrid
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Expected availability: 7-10 business days

Important Notice

  • This item is noncancelable and nonreturnable.
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Lectrosonics DMTH4 Overview

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

Lectrosonics DMTH4 Specs

Frequency Response20Hz to 20kHz
Dynamic RangeInput: 102dB (unweighted 20Hz to 20kHz)
Output: 105dB (unweighted 20Hz to 20kHz)
Inputs5-pin Phoenix
Outputs5-pin Phoenix
Other Connectors6 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 Impedance10kΩ
Output Impedance450Ω differential @ 0dB attenuation
5Ω differential @ -40dB attenuation
Maximum Input Level+20dBu
Maximum Output Level+20dBu
Sample Rate48Khz
Phantom PowerNo
CrosstalkLine Level -103 dB
Mic Level -101 dB
THD + N0.02%, nominal input level
Dimensions (WxDxH)19 x 7.5 x 1.7" (483 x 191 x 43mm)
Weight3.5 lbs (1.6 kg)
SpecialtiesIntegrates telephone lines, video codecs and external audio sources into the digital bus structure of DM Series processors
Packaging Info
Package Weight9.25 lb
Box Dimensions (LxWxH)24.2 x 14.4 x 6.4"
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