MIDAS DL431 MIDAS_DL431%20P0AFB_Product%20Information%20Document.pdf

Product Information Document

I/O Interfaces

PROSERIES
DL431

24 Input, 72 Output Active Microphone
Splitter with Independent MIDAS
Microphone Preampli ers

24 channel microphone splitter with

2 electronically and 1 transformer
balanced outputs per channel

3 award-winning MIDAS microphone

preampli ers per channel with
switchable +48 V phantom power

2 independent dual redundant

AES50 (X and Y) network ports

Local channel monitoring with

integrated headphone ampli er

24 bit audio operation with 96 kHz

sample rate

Remote operation up to 80 m via

CAT5/5e cable

All settings programmable from

front panel controls or console

PSU status indicator LEDs and

con guration LCD display on
front panel

Features Neutrik etherCON* AES50

network ports

Rugged 6U rackmount chassis for

durability in portable applications

Dual redundant auto-ranging

universal switch-mode
power supplies

3-Year Warranty Program*

Designed and engineered in England

DL431 is a 6U 19"  xed-con guration

rack I/O unit designed for microphone

signal splitting applications with

24 mic/line level inputs and 72

line level outputs, and delivers

legendary MIDAS sound quality

utilising our time-tested and road-

proven technologies. Featuring two

independent MIDAS microphone

preampli ers with 2.5 dB gain

steps plus a third  xed gain MIDAS

Microphone preampli er per input channel, two dual redundant AES50

network interfaces, dual redundant Ethernet control ports and a MIDI

Interface (In, Out, Thru), the DL431 is the ideal partner to the MIDAS PRO3,

PRO6, PRO9, XL8 and PRO X digital consoles, enabling a digital snake

connection from Front of House to stage.

*All third-pa rty tradema rks are the prop erty of their re spective owne rs.
Their use n either constitu tes a claim of the trad emark nor a liat ion of
the tradem ark owners with MU SIC Group. Produc t names are mentio ned
solely as a re ference for comp atibility, e ects and/or components.
Warranty d etails can be fou nd at music-group.c om.

Product Information Document

I/O Interfaces

PROSERIES
DL431

24 Input, 72 Output Active Microphone
Splitter with Independent MIDAS
Microphone Preampli ers

Award-Winning MIDAS Microphone Preampli er

The MIDAS microphone preampli er is considered by leading live sound and recording engineers
to be the very essence of the famous MIDAS sound. More than 40 years of design experience paired
with the  nest choice of premium-grade components lead to the acclaimed warmth and depth ­bringing out subtle ambience, maintaining spatial positioning and more e ectively capturing a
precise sound image. The acclaimed sound of the award-winning MIDAS microphone preampli er
has inspired generations of live sound engineers to their best work, creating sonic panoramas that
have captivated audiences worldwide.

Since pristine sound always begins with the microphone preampli er, the  rst point where the
signal enters the console, DL431 features the latest generation of MIDAS microphone preampli ers,
which faithfully reproduce every sonic detail so no part of a performance will ever be missed.
Transparent and pristine sound, low noise and high common-mode rejection are all hallmarks of
this classic design.

Over the years many mix engineers have found this robust and overload-tolerant design takes on a
whole new dimension of sound when driven hard, the crystal-clear audiophile reproduction giving
way to just the right combination of harmonics, a warm and organic sound heard by millions of
concert goers and recorded for posterity on countless live albums over the years.

Digital Audio Networking

SuperMAC (AES50-Compliant) digital audio networking technology from KLARK TEKNIK
simultaneously provides high channel counts, ultra low and deterministic latencies,
sample-synchronous and phase-aligned networked clock distribution, error detection and
correction, network redundancy, and ease of deployment and use – to meet the demanding
requirements of live concert touring.

DL431 is compatible with all MIDAS PRO Series and XL8 digital consoles and audio system engines,
as well as with any other 96 kHz-enabled AES50-equipped devices.

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Product Information Document

I/O Interfaces

PROSERIES
DL431

24 Input, 72 Output Active Microphone
Splitter with Independent MIDAS
Microphone Preampli ers

Microphone Splitter

Each input connector on the DL431 feeds three separate MIDAS microphone preampli ers, two with
independent remote gain control and +48V phantom power switching, and a third with  xed gain to
drive the front panel transformer-balanced analogue output for interfacing to third party recording
or outside broadcast equipment.

The two independent variable gain microphone preampli ers can be remotely controlled from two
separate locations, such as the Front of House and Monitor mix positions. Each remotely controlled
microphone preampli er also has a dedicated analogue split output on the DL431 rear panel.

A local channel monitoring facility with an integral headphone ampli er and separate line output
allows incoming signals to be checked at source, an essential aid for system set-up and con rming
signal integrity.

Remote Console or Front Panel Control

All con guration settings for DL431 can be set either remotely from the mixing console, or directly
via the intuitive and easy to understand front panel. DL431 features a front panel LCD display with
intuitive menu navigation for all con guration options with LED status indicators, which provide
clear feedback of operational status over wide viewing angles and distances. Clear indication is
provided showing power supply output rail condition and AES50 and Ethernet network connection
status and activity.

Each input channel has dedicated selection switch and LED bargraph metering, plus indicators for
phantom power and high pass  lter status.

Built for the Road

Featuring a rugged steel 6U rackmount enclosure, the DL431 is designed for the rigours of live
concert touring. Premium Neutrik connectors are used for reliable audio and network connections,
night after night.

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Product Information Document

I/O Interfaces

PROSERIES
DL431

24 Input, 72 Output Active Microphone
Splitter with Independent MIDAS
Microphone Preampli ers

Auto-ranging universal switch-mode power supply

DL431 features dual-redundant power supplies, which are auto-voltage sensing for use on a
worldwide basis and provide seamless switchover in the unlikely event of a loss of one power supply.

You Are Covered

We always strive to provide the best possible Customer Experience. Our products are made in our
own MUSIC Group factory using state-of-the-art automation, enhanced production work ows and
quality assurance labs with the most sophisticated test equipment available in the world. As a result,
we have one of the lowest product failure rates in the industry, and we con dently back it up with a
generous 3-Year Warranty program.

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Product Information Document

I/O Interfaces

PROSERIES
DL431

24 Input, 72 Output Active Microphone
Splitter with Independent MIDAS
Microphone Preampli ers

Dimensions

433 [17.1]

12.0 [0.47]10.9 [0.43] 379 [14.9]

TOP

483 [19.0]

CL

FRONT

402 [15.8]

SIDE

266 [10.5]

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Product Information Document

I/O Interfaces

PROSERIES
DL431

24 Input, 72 Output Active Microphone
Splitter with Independent MIDAS
Microphone Preampli ers

Technical Speci cations

General Speci cations

Dimensions 6U x 402 mm deep

Net weight 21.5 kg

Power requirements 100 to 240 VAC, 50 to 60 Hz

Operating temperature range +5°C to + 40°C

Storage temperature range -20°C to +60°C

Dynamic range 124 dB unweighted
( DL431 analogue input to
DL431 analogue output)

Dynamic range 110 dB unweighted
(DL431 analogue input to
DL451 analogue output)

Inputs and Outputs

Analogue inputs

Connector 3-pin XLR balanced

Phantom power 48 V with local switch and remote control

from XL8 control centre

Gain control A -2.5 dB to +45 dB analogue gain in 2.5 dB

steps with local and remote control

Gain control B Independent second channel identical

to above

Filter A 30 Hz high pass with local defeat switch

and remote control from control centre

Filter B Independent second channel identical

to above

Meter (24-o ) 7-segment, -18 dBu to +24 dBu

Meter A/B Meters can be switched to monitor A or B

pre-ampli ers

A/D converter A 24-bit, 96k and 128 times over sampling

A/D converter B Independent second channel identical

to above

Analogue outputs

Connector A 3-pin XLR balanced

Connector B Independent second channel identical

to above

Connector C Independent third channel on

front-mounted 3-pin XLR, balanced and
transformer isolated (with  xed gain
of -6 dB)

Headphone connec tor ¼ " jack

Audio monitor 3-pin XLR balanced

Digital (system) outputs

System connector A AES50 (24 channels of digital audio)

on etherCON XLR

System connector B Independent second channel identical

to above

Duplicate connector A AES50 (24 channels of digital audio)

on XLR providing dual redundant back up
of A channels

Duplicate connector B AES50 (24 channels of digital audio)

on XLR providing dual redundant back up
of B channels

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Product Information Document

I/O Interfaces

PROSERIES
DL431

24 Input, 72 Output Active Microphone
Splitter with Independent MIDAS
Microphone Preampli ers

Architecture and Engineering Speci cations

The interface unit shall be designed for digital audio mixing applications and be optimised for use in live performance. It shall feature 24 input

channels with three microphone preampli ers per input channel - two independent remotely-controlled variable gain microphone preampli ers

with 2.5 dB gain steps and one  xed gain microphone preampli er. Each variable gain preampli er shall feed a rear panel servo-balanced

electronic output and each  xed gain preampli er shall feed a front panel transformer-isolated output, all on industry-standard XLR connectors,

for a total of 72 outputs. The interface unit shall be capable of operating at 96 kHz sampling rate.

The interface unit shall support a 100 Megabit Ethernet frame-based digital audio network that shall o er dual redundancy and be compliant

with the Audio Engineering Society AES50-2011 standard. Two dual redundant digital network audio interfaces shall be provided. Two dual

redundant Ethernet control ports and an industry-standard MIDI Interface (In, Out, Thru) shall also be provided.

The interface unit shall provide both front panel and remote network con guration of operational settings and provide an alphanumeric LCD

display with associated menu navigation buttons, and LED status indication of power supply output rail condition and digital audio and control

network connection status and activity.

Each input channel shall have a selection switch, LED signal metering bargraph and LED indication for +48 V phantom power and high pass

 lter status.

A local channel monitoring facility with an integral headphone ampli er and separate line output shall be provided for monitoring input

channel signals.

The interface unit shall include two auto-ranging universal switch-mode power supplies with dual redundancy for use on a worldwide basis.

The interface unit shall be housed in a standard 6U 19" rackmount chassis, and shall be 483 mm wide x 402 mm deep x 266 mm high

(10.5" x 15.8" x 10.5"), with nominal weight 21.5 kg (47.3 lbs). The interface unit shall be installed in a rack frame or road case capable of safely

supporting its weight. Input, output, and power connections shall be made at the rear panel of the interface unit. Installers shall allow adequate

space at the rear for connection and disconnection of input, output, and power connections. The power requirements shall be 100 to 240 VAC,

50 to 60 Hz.

The interface unit shall be the MIDAS DL431 and no other alternative shall be acceptable.

7 of 9

Product Information Document

I/O Interfaces

PROSERIES
DL431

24 Input, 72 Output Active Microphone
Splitter with Independent MIDAS
Microphone Preampli ers

8 of 9

Product Information Document

I/O Interfaces

PROSERIES
DL431

24 Input, 72 Output Active Microphone
Splitter with Independent MIDAS
Microphone Preampli ers

For service, support or more information contact the MIDAS location nearest you:

Europe
MUSIC Group Services UK

Tel: [phone]
Email: [e-mail]

MUSIC Group a ccepts no liabilit y for any loss which m ay be su ered by any per son who relies eit her wholly or in par t upon any descri ption, photogr aph, or stateme nt contained here in.
Tech nic al sp eci cations, app earances and othe r information are s ubject to change w ithout notice. Al l trademarks ar e the propert y of their respec tive owners. MI DAS, KLARK TEKN IK,
LAB.GRUPPE N, LAKE, TANNOY, TURBOSOU ND, TC ELECTRONIC , TC-HELICON, BEHRIN GER, BUGERA , DDA and TC APPLIED TECHNOLO GIES are tradem arks or registered trademarks of
MUSIC Group IP Lt d. © MUSIC Group IP Ltd. 2015 All right s reserved.

USA/Canada
MUSIC Group Services NV Inc.

Tel: [phone]
Email: [e-mail]

Japan
MUSIC Group Services JP K.K.

Tel.: [phone]
Email: [e-mail]