Midas DL431 User manual

DL431 Mic Splitter
Operator Manual
Midas,
Klark Teknik Building,
Walter Nash Road,
Kidderminster.
Worcestershire.
DY11 7HJ.
England.
Tel: [phone]
Fax: [phone]
Email: [email protected]
Website: www.midasconsoles.com
DL431 Mic Splitter - Operator Manual
DOC02-DL431 Issue 1 - April 2007
© Telex Communications (UK) Limited
In line with the company’s policy of continual improvement, specifications and function may be
subject to change without notice. This Operator Manual was correct at the time of writing. E&OE.

IMPORTANT SAFETY INSTRUCTIONS
The lightning flash with arrowhead symbol within an equilateral triangle, is
intended to alert the user to the presence of uninsulated “Dangerous Voltage”
within the product's enclosure that may be of sufficient magnitude to constitute a
risk of electric shock to persons.
The exclamation point within an equilateral triangle, is intended to alert the user
to the presence of important operating and maintenance (servicing) instructions
in the literature accompanying the product.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS
APPARATUS TO RAIN OR MOISTURE.
WARNING: DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR SPLASHING AND
ENSURE THAT NO OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, ARE
PLACED ON THE EQUIPMENT.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any of the ventilation openings. Install in accordance with the manufacturer’s
instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug
has two blades with one wider than the other. A grounding type plug has two blades and a
third grounding prong. The wide blade or the third prong are provided for your safety. If the
provided plug does not fit into your outlet, consult an electrician for replacement of the
obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Unplug this apparatus during lightning storms or when unused for long periods of time.
13. Refer all servicing to qualified personnel. Servicing is required when the apparatus has been
damaged in any way, such as power supply cord or plug is damaged, liquid has been spilled or
objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture,
does not operate normally, or has been dropped.
14. Use the mains plug to disconnect the apparatus from the mains.
15. The mains plug of the power supply cord shall remain readily operable.

Telex Communications (UK) Limited, Klark Teknik Building,
Walter Nash Road, Kidderminster. Worcs. DY11 7HJ. England.
Tel: [phone] Fax: [phone]
www.ktsquareone.com
EU DECLARATION OF CONFORMITY
We, Telex Communications (UK) Limited of Klark Teknik Building, Walter Nash Road, Kidderminster,
Worcestershire, DY11 7HJ, declare that a sample of the following product:
to which this declaration refers, is in conformity with the following directives and/or standards:
Signed: .................................................. Date: 11th April 2007
Name: Simon Harrison
Authority: Research and Development Director, Telex Communications (UK) Limited
Attention!
Where applicable, the attention of the specifier, purchaser, installer or user is drawn to special limitations of
use which must be observed when these products are taken into service to maintain compliance with the
above directives. Details of these special measures and limitations to use are available on request and are
available in product manuals.
Company registration No. 2414018. A subsidiary of Telex Communications Inc.
Product Type Number Product Description Nominal Voltage(s) Current Freq.
DL431 Mic Splitter 115V AC
230V AC
1A
0.6A
50/60Hz
Directive(s) Test Standard(s)
89/336/EEC Electromagnetic Compatibility Directive amended by
92/31/EEC & 93/68/EEC 73/23/EEC,
Low Voltage Directive, amended by 93/68/EEC
Generic Standard Using EN55103 Limits and Methods EN50081/1
Class A Conducted Emissions PAVI EN55103
Class A Radiated Emissions PAVI EN55103
Fast Transient Bursts at 2kV EN61000-4-4
Static Discharge at 4kV EN61000-4-2
Electrical Stress Test EN60204
Electrical Safety EN60065 7th Edition

End-User License Agreement for Midas™ and Klark Teknik™ Software
IMPORTANT - Please read this document carefully before using this Midas™ or
Klark Teknik™ product. This is an agreement governing your use of software or
other machine instructions already installed on the Midas™ or Klark Teknik™
product, as well as other software that we provide for installation on the product.
The Midas™ or Klark Teknik™ product will not operate in accordance with its
documentation without this software.
THIS AGREEMENT ("AGREEMENT" OR "LICENSE") STATES THE TERMS AND CONDITIONS UPON WHICH
TELEX COMMUNICATIONS, INC. ("COMPANY") OFFERS TO LICENSE THE INSTALLED FIRMWARE,
SOFTWARE, AND/OR PROGRAM ("the SOFTWARE") WITH THE MIDAS™ OR KLARK TEKNIK™ CONSOLE
OR SIGNAL PROCESSING PRODUCT ("PRODUCT") IN WHICH IT WAS INSTALLED BY, OR PROVIDED
FOR BY, THE COMPANY. YOU ARE AGREEING TO BECOME BOUND BY THE TERMS OF THIS LICENSE. IF
YOU DO NOT AGREE TO THE TERMS OF THIS LICENSE, DO NOT USE THIS PRODUCT. PROMPTLY
RETURN THE PRODUCT TO THE PLACE WHERE YOU OBTAINED IT FOR A FULL REFUND. You agree to
notify any persons who you permit to operate this Product of the terms of this License, and to expressly
obligate them in writing to comply with these terms.
The installed software as supplied by the Company is licensed, not sold, to you for use only under the
terms of this License, and the Company reserves all rights not expressly granted to you. You own the
Product on or in which the Software has been installed by the Company, but the Company retains
ownership of all copies of the Software itself, including those stored on or in the Product.
1. License: This limited License allows you, and other persons you permit to operate the Product,
to use the Software only on the single Product unit in which it was installed.
2. Restrictions: (a) The Software and the accompanying written materials are copyrighted, and
contain trade secrets and other proprietary matter, including confidential information relating to
the specifications and performance characteristics of Company's products. The Software is
protected by state trade secret laws as well as U.S. and international copyright and intellectual
property laws and treaties. All rights to copyrights, trademarks and trade secrets in the Software
or any modifications to it are owned by Company. Unauthorized copying of the Software or any
portion thereof, or copying of the written materials, is prohibited. (b) You may not create,
market, distribute, or transfer copies of the Software to others or electronically transfer or
duplicate the Software, or rent, lease, or loan the Software, except in conjunction with the sale,
transfer, loan, rent, or lease of the Product on which it is installed, and subject at all times to this
License. YOU MAY NOT REVERSE ENGINEER, DECOMPILE, DISASSEMBLE, MODIFY, ADAPT, PORT,
OR TRANSLATE THE SOFTWARE OR CREATE DERIVATIVE WORKS BASED ON THE SOFTWARE OR
ANY ACCOMPANYING WRITTEN MATERIALS. (c) In the event you violate any term of this
Agreement, all licenses granted herein automatically terminate and you must stop using the
Software and destroy any copies of the Software or remove them from the Product.
3. Limited Warranty: Subject to your installation of any Software updates issued by the Company
as described herein, the Company warrants that the Software shall cause the Product to operate
in compliance with the Product's material specifications and documentation for a period of
90 days from your purchase of the Product. The Company does not warrant that the operation of
the Software will meet your requirements or operate free from error. The Company DISCLAIMS
ALL WARRANTIES AND CONDITIONS EITHER EXPRESS OR IMPLIED, INCLUDING THE
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NON-INFRINGEMENT OF THIRD PARTY RIGHTS. You understand that the Company may update
or revise the Software and in so doing incurs no obligation to furnish such updates to you.
However, the Company may in its discretion make updates available from time to time upon such
terms and conditions as it shall determine. It is a condition of any warranty granted pertaining to
either the Software or the Product, that you install any such Software updates, as may be issued
from time to time by the Company for the Product or the Software, in accordance with
Company's instructions. You may view current Software updates at http://www.klarkteknik.com
and http://www.midasconsoles.com

4. Limited Liability: THE LIABILITY OF THE COMPANY FOR ANY CLAIMS ARISING OUT OF THIS
LICENSE AND/OR BASED UPON THE SOFTWARE, REGARDLESS OF THE FORM OF ACTION, SHALL
NOT EXCEED THE GREATER OF THE LICENSE FEE FOR THE SOFTWARE OR THE COST OF THE
PRODUCT. IN NO EVENT SHALL TELEX BE LIABLE FOR ANY LOSS OF DATA, LOST OPPORTUNITY
OR PROFITS, COST OF COVER, OR SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR INDIRECT
DAMAGES, EVEN IF YOU ADVISE COMPANY OF THE POSSIBILITY OF SUCH DAMAGES. THIS IS
AN ESSENTIAL TERM OF THIS AGREEMENT AND YOU ACKNOWLEDGE THAT THE AMOUNT YOU
PAID FOR THE PRODUCT AND SOFTWARE REFLECTS THIS ALLOCATION OF RISK.
5. Other Third-Party Computer Programs: As referred to herein, the term "Software" refers
only to proprietary Midas™ or Klark Teknik™ Software, developed by Company, that has been
provided to you for installation on, or already installed in, your Midas™ or Klark Teknik™ Product.
In addition to this Software, you may have also been provided, at no additional charge, a version
of the widely-available Linux software, which is a modular operating system made up of hundreds
of individual software components, each of which were written and copyrighted individually by
various parties (collectively, the "Linux Programs"). Each component has its own applicable end
user license agreement. Many of the Linux Programs are licensed pursuant to a Linux End User
License Agreement ("Linux EULA") that permits you to copy, modify, and redistribute the
Software. However, you must review the on-line documentation that shares a directory or
otherwise accompanies each of the Linux Programs included in this Product, for the applicable
Linux EULA. Nothing in this license agreement limits your rights under, or grants you rights that
supersede, the terms of any applicable Linux EULA. If you wish to receive a computer-readable
copy of the source code for the Linux programs that have been provided with your Midas™ or
Klark Teknik™ product, send a check or money order (no cash accepted), your address, and
$10.00 to cover the cost of optical media, postage and handling, to:
Telex Communications, Inc.
ATTN: Linux Programs CD for Midas™/Klark Teknik™
12000 Portland Ave South
Burnsville, Minnesota 55337.
In your request, indicate your Product's name and model number, serial number, and
version/release information. This offer made pursuant to the Linux EULA may expire according
to the terms of the Linux EULA, in which case your check will be returned to you or destroyed at
our option. Please note that the Linux distribution that may be available to you under this offer
consists of the Linux kernel only and does not contain any application software not
covered by the Linux EULA. Other updated Linux distributions containing application software
are widely available from a variety of Internet sources, and are often available at minimal or no
cost.
6. Termination: This License will terminate immediately if you violate any of the License terms.
Upon termination you must discontinue use of the Software, and either destroy, erase, or return
to Company all copies of the Software in your possession, custody or control, including those in
or on the Product.
7. General: This License constitutes the entire agreement between you and Company with respect
to this Software and supersedes any other communication (including advertising). If any
provision of this License is held unenforceable, that provision shall be enforced to the maximum
extent permissible so as to give effect the intent of this License, and the remainder of this
License shall continue in full force and effect. This License shall be governed by the laws of the
State of Minnesota, and the federal laws of the United States, without reference to conflict of
laws principles. You agree that the United Nations Convention on Contracts for the International
Sale of Goods is inapplicable to both this License and to the sale of the Product.

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Operator Manual
Safety Precautions
Before installing, setting up or operating this equipment please ensure that
you have read and fully understand all of this section and the “IMPORTANT
SAFETY INSTRUCTIONS” at the front of this manual.
This equipment is supplied by a mains voltage that can cause electric shock injury!
The following special limitations must be observed in order to maintain safety and
electromagnetic compatibility performance.
Safety warnings
Signal 0V is connected internally to the chassis.
To electrically isolate the equipment, switch off both mains on/off switches at
the rear of unit. Make sure that the power at the mains outlets is off and then
disconnect both mains cables from the mains outlets.
Do not expose this equipment to dripping or splashing and ensure that no
objects filled with liquids, such as drinks glasses or cans, are placed on the
equipment.
To prevent shock or fire hazard, do not expose the equipment to rain or
moisture. To avoid electrical shock do not remove covers. Refer servicing to
qualified personnel only.
The power supplies - even the DC ones - have a high current!
General precautions
The following information gives basic safety precautions that should be observed to
reduce the risk of fire, electric shock and personal injury:
• Only properly trained service personnel familiar with this manual and with the
generally applicable safety regulations should service the equipment.
• Safety instructions detailed in the manual should be understood and properly
implemented.
• In the event of ground loop problems, disconnect the signal screen at one end of the
connecting cables. Note that this can only be done when the equipment is used
within a balanced system.
• Never operate damaged equipment and never operate equipment with damaged
cables.
• Any part that is damaged should be properly repaired or replaced. This must be
done by a fully trained and authorised service engineer.
• Observe all warnings, cautions etc. on any part of the equipment.
• Do not remove, hide or deface any warnings or cautions.

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Power
THE XL8 SYSTEM COMPONENTS SHOULD NEVER BE OPERATED WITH THE
MAINS EARTH DISCONNECTED!
Please note that the system power supplies contain LETHAL VOLTAGES greatly in
excess of the mains voltage and that its rails can produce extremely large currents that
could burn out equipment and wiring if shorted. All testing and servicing must ONLY be
carried out by approved service engineers.
This apparatus should only be operated with the power supply connected to ground via
the ground in the mains connector.
The internal power supplies are of the switch mode type that automatically senses the
incoming mains voltage and will work where the nominal voltage is in the range
100VAC to 240VAC.
We strongly recommend that, for safety and to optimise the life and performance of the
equipment, the mains cable plugs are removed from the power outlets when the
equipment is not to be used for extended periods of time or during electrical storms.
When removing the equipment’s electric plugs from the outlets, always hold the plug
itself and not the cable. Pulling out the plug by the cable can damage it.
Never insert or remove an electric plug with wet hands.
Handling the equipment
Completely isolate the equipment electrically and disconnect all cables from the
equipment before moving it.
When lifting or moving the equipment, always take its size and weight into
consideration. If necessary, use suitable lifting equipment or transporting gear, or
sufficient personnel.
Do not insert your fingers or hand in any gaps or openings on the equipment, for
example, vents.
Avoid inserting or dropping foreign objects, such as paper, plastic, metal etc., into any
gaps or openings on the equipment, for example, vents. If this happens, turn off the
power immediately and unplug the power from the AC outlets. Then have the
equipment inspected by the manufacturer's qualified service personnel.
Installation
Before installing the equipment:
• Make sure the equipment is correctly connected to the protective earth conductor of
the mains voltage supply of the system installation through the mains leads.
• Power to the equipment must be via a fused spur.
• Power plugs must be inserted in socket outlets provided with protective earth
contacts. The electrical supply at the socket outlets must provide appropriate
over-current protection.
• Both the mains supply and the quality of earthing must be adequate for the
equipment.
• Before connecting up the equipment, check that the mains power supply voltage
rating corresponds with the local mains power supply. The rating of the mains power
supply voltage is printed on the equipment.
• Mount in rack only.

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Location
• Ideally a cool area is preferred not in close proximity to power distribution
equipment or other potential sources of interference.
• Do not install the equipment in places of poor ventilation.
• Do not install this equipment in a location subjected to excessive heat, dust or
mechanical vibration. Allow for adequate ventilation around the equipment, making
sure that its fans and vents are not obstructed. To prevent excessive heating of the
equipment, avoid mounting it directly above power amplifiers or other devices that
radiate significant amounts of heat such as, radiators and heaters. Keep the
equipment out of direct sunlight.
• Do not place the equipment in an unstable condition where it might accidentally fall
over.
• Make sure that the mains voltage and fuse rating information of the equipment will
be visible after installation.
Audio connections
To ensure the correct and reliable operation of the equipment, only high quality
balanced, screened, twisted pair audio cable should be used.
XLR connector shells should be of metal construction so that they provide a screen
when connected to the console and, where appropriate, they should have Pin 1
connected to the cable screen.
Radio frequency interference
Class A device
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.
Electric fields
Caution:
In accordance with Part 15 of the FCC Rules & Regulations, “… changes or
modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.”
Should this product be used in an electromagnetic field that is amplitude modulated by
an audio frequency signal (20Hz to 20kHz), the signal to noise ratio may be degraded.
Degradation of up to 60dB at a frequency corresponding to the modulation signal may
be experienced under extreme conditions (3V/m, 90% modulation).
Operation
To avoid electrical shock, never operate the equipment with the covers removed.

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Safety equipment
Never remove, for example, covers, housings or any other safety guards. Do not
operate the equipment or any of its parts if safety guards are ineffective or their
effectiveness has been reduced.
Optional equipment
Unless advised otherwise, optional equipment must only be installed by service
personnel and in accordance with the appropriate assembly and usage regulations.
Special accessories
To comply with part 15 of the FCC Rules, any special accessories (that is, items that
cannot be readily obtained from multiple retail outlets) supplied with this equipment
must be used with this equipment; do not use any alternatives as they may not fulfil
the RF requirement.

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Contents
Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Warranty and registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Intended readers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Document structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Package contents/unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Packing list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 2 XL8 Live Performance System Overview . . . . . . . . . . . 5
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
System hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
System interconnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Connecting up the XL8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Cable type and function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
System interconnection checklist . . . . . . . . . . . . . . . . . . . . . . . . . 13
FOH and MON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Audio physical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Uses of the configurable audio connections . . . . . . . . . . . . . . . . . . . . 15
Mix matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Console linking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Input channel processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mix channel processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Output channel processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Effects processing and GEQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Control software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Resilience to failure (redundancy) . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Integration of third party software . . . . . . . . . . . . . . . . . . . . . . . . . . 24
System documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Chapter 3 Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
mic amp select panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Ethernet control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
AES50 audio panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
psu 1 and psu 2 panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
channel monitor panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
analogue output metering section . . . . . . . . . . . . . . . . . . . . . . . . . . 31
isolated C outputs section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Chapter 4 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Rear panel connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

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LED indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Chapter 5 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Connecting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Switching on and off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Switching on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Switching off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Setting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Chapter 6 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Main menu options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Main menu flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
To enter the main menu and select an option . . . . . . . . . . . . . . . . .42
To exit the main menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Option 1 MicSplit ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
To set up the unit’s ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Option 2 AES50 Sync . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
To set up the unit’s AES50 synchronisation . . . . . . . . . . . . . . . . . .44
Option 3 Local Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
To set up the unit for local or console operation . . . . . . . . . . . . . . .45
Option 4 AES50 Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
To view/clear the AES50 status . . . . . . . . . . . . . . . . . . . . . . . . . .46
Option 5 S/W Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
To view the current host software and CBMA versions . . . . . . . . . . .47
Chapter 7 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Default display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Adjusting a channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
To select a mic amp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
To select a channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
To switch on the 48V phantom voltage . . . . . . . . . . . . . . . . . . . . .51
To switch on the 30Hz filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
To adjust the gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Monitoring a channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Service information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Routine maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Yearly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Cleaning the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Cleaning the LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Cleaning the internal fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Equipment disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Chapter 8 Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Using the 30Hz filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Appendix A Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . 57
Appendix B Technical Specification . . . . . . . . . . . . . . . . . . . . . . . 59
General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

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DL431 Mic Splitter
Operator Manual
Inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Analogue inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Analogue outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Digital (system) outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

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DL431 Mic Splitter
Operator Manual

1
DL431 Mic Splitter
Operator Manual
Chapter 1: Introduction
The DL431 Mic Splitter is a six-unit (6U) 19” rack unit that provides 24 mic/line inputs.
Each input feeds three separate preamps, two of which have separate remote and local
gain controls, while the third has fixed gain. The two preamps with gain controls feed
separate analogue to digital (A/D) converters, which pass digital audio to the network.
Four discrete AES50 outputs supply dual redundant digital audio to front of house (FOH)
and monitor XL8 systems, and allow for easy routing to any third-party AES50 device
(for example, a recorder), via DL461 routers.
Two balanced analogue splits - sourced from post-each mic amp - are provided on the
rear panel. The third, fixed gain, preamp feeds a transformer isolated split on the front
panel for recording or broadcast applications.
Front panel control and local monitoring, including integral headphone amplifier,
enhance the DL431’s features, and dual redundant internal power supplies ensure
worry-free operation. Four DL431s are supplied with each XL8 system to provide 96
input channels.
Your DL431 Mic Splitter was conceived by Midas to offer audio professionals
high-performance audio equipment, designed to provide no-compromise sonic quality
with a feature set that offers all essential facilities and functions. It represents the very
best of British design and engineering combined with contemporary, efficient
manufacturing methods, and will give you many years of reliable service.
So, to obtain the best results with a minimum of effort, please read this operator
manual and, finally, enjoy your Midas DL431 Mic Splitter!
Warranty and registration
Midas has total confidence in the quality and reliability of this product. To back this up,
this product comes with the standard Midas and Klark Teknik three year warranty.
Please take the time to register your product by completing and returning the
registration card or registering on our website at www.midasconsoles.com.

2Chapter 1: Introduction
DL431 Mic Splitter
Operator Manual
About this manual
Purpose
This is the operation manual for the DL431 Mic Splitter. It is intended to help get your
DL431 Mic Splitter installed and in operation as quickly as possible by giving you
unpacking, installation, connection, setting up and operating instructions. To help
familiarise you with the DL431 Mic Splitter there is a description of the front and rear
panels, along with easy-to-follow user instructions.
The following chapter gives a brief overview of the XL8 Live Performance System and
includes system interconnection details. However, if you want to learn more about the
XL8 Live Performance System, please go on to read the XL8 Control Centre operator
manual (part number DOC02-XL8), which provides a full and comprehensive guide.
Intended readers
This manual is aimed at professionals, such as front of house (FOH) and monitor (MON)
engineers who will be using this equipment in a live performance environment. It is
assumed that the reader has prior experience of using professional audio equipment
and has, most likely, undergone training on this system.
However, if you have limited experience on using this type of equipment, perhaps it
might be useful to read through the pertinent sections in the operator manuals for the
XL8 Live Performance System before using this equipment. This will provide you with
valuable background information.
Document structure
This manual is divided into the following sections:
•Chapter 1 - Introduction (this chapter)
Introduces the DL431 Mic Splitter and provides information on this manual.
•Chapter 2 - XL8 Live Performance System Overview
Brief introduction to the XL8 Live Performance System.
•Chapter 3 - Front Panel
Description of the front panel of the DL431 Mic Splitter.
•Chapter 4 - Rear Panel
Description of the rear panel of the DL431 Mic Splitter.
•Chapter 5 - Getting Started
Brief instructions on connecting up, switching on and off, setting up and
configuration of the DL431 Mic Splitter.
•Chapter 6 - Main Menu
Details on how to access the main menu and a description of the function and use of
each of the options.
•Chapter 7 - Operation
An in-depth guide on how to operate the DL431 Mic Splitter, including service
information to help the user maintain the unit in the best possible condition.
•Chapter 8 - Application Notes
Detailed information on using the filter.
•Appendices
Functional block diagram and technical specifications.

Package contents/unpacking 3
DL431 Mic Splitter
Operator Manual
Package contents/unpacking
Please retain the original packing for use should you need to transport or ship this unit.
After unpacking, please inspect the unit carefully for any signs of damage that may
have occurred in transit and notify the courier immediately if you feel that any damage
has occurred.
Packing list
The following is a list of the main items contained in the DL431 Mic Splitter package:
• 1-off DL431 Mic Splitter.
• 1-off DL431 Mic Splitter operator manual (this document), part number
DOC02-DL431.
• 1-off warranty card, part number DOC04-WARRANTY.
• 2-off mains leads, part number PWR21-MAINSLEAD.
Features
The DL431 Mic Splitter comprises:
• 24 mic/line inputs.
• Three totally independent preamps per channel.
• Analogue splits.
• Full metering on every channel.
• Hi pass 30Hz filter option on every channel.
• 48V phantom voltage option on every channel.
• Two power supply units (PSUs) for dual redundancy.
• Easy routing to third-party AES50 devices.
• Integral headphone amplifier.

4Chapter 1: Introduction
DL431 Mic Splitter
Operator Manual