FSR ML-500 Instruction Manual

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244 Bergen Boulevard, West Paterson NJ 07424 Tel[phone] Fax[phone]
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ML-500
Room Combining System
Operation & Installation
Manual
43828

INNOVATIVE ENGINEERING AND QUALITY MANUFACTURING OF ELECTRONIC SWITCHING AND CONTROL PRODUCTS
244 Bergen Boulevard, West Paterson, NJ 07424 Tel [phone] Fax [phone] E-Mail [email protected]
AUDIO PRODUCT GROUP
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.ML-500
OPERATION and INSTALLATION
Ideal for smaller hotels and conference centers with
more stringent budget restraints, the ML-500 strikes a
goodbalanceinthebasicrequirementsofmicrophoneand
music control and the more elaborate features found in
ourlargercombiningsystems.
The system features in-room control plates to operate
microphone(onoroff),backgroundmusic(onoroff),a
combineswitchthatcanselectoneoftwotielinesorlocal,
anda volumecontrol forthemic andmusic audiolevels.
Efficientandfoolproofinstallationisassured. Thein-room,
3-gangwallplates have a7-wirecable thatconnectsviaa
pluggablescrewconnectortothemain control unit, and
power for the main unit is provided by a PM-2 power
supply.
System operation is easily understood and can be con-
trolled by the staff.
To combine two rooms, place each room’s combining
switch to Tieline A. The rooms are now mixed. For
backgroundmusicset the music volume controloneach
room'swallplatetothesame value,and select "musicon"
inbothrooms. Musicwillbe heardin bothroomsequally
loud.Theothertwo roomscouldbecombinedbyplacing
eachroomcombiningswitchtoTielineB.
If microphone operation is desired, the rooms could be
mixedas above, the microphone switch turnedon in all
mixedrooms(two in this example),andthensetthe vol-
umecontrolequallyinbothrooms,forathedesiredlisten-
inglevel.
If none of the rooms are combined, then each room’s
combining switch must be set on local. This allows
full control of each room’s audio from the wallplate.
All mixer inputs as well as the music input are elec-
tronically balanced. All audio outputs are balanced,
600 ohm, transformer-coupled outputs insuring
trouble-free installation.
There are two busses: Line A and Line B. Any
wallplate that selects either of these busses will have
its associated audio summed with any other wallplate
that selects the same line. Since this is a four-room
system (or less), only two busses are required to mix
rooms in any conceivable fashion.
THE ML-500 ROOM AUDIO
COMBINING SYSTEM

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244 Bergen Boulevard, West Paterson, NJ 07424 Tel [phone] Fax [phone] E-Mail [email protected]
AUDIO PRODUCT GROUP
Wheneverrooms are combined, thevolumecontrols in those roomsshouldbeset at thesamelevel.
Note that the music audio can be summed with the microphone audio anytime the microphone switch and
themusic switchare intheon position.
Thewallplatesfullycontrolthesystem;however,thewallplates receiveno audiosignals. This designpermits the
mainunittobeplacedwiththerestoftheaudio equipment,againsimplifyinginstallationandservicing.
A “QUICK SETUP GUIDE” has been provided to simplify day-to-day operation. Please instruct the user on
theproperuseofthe ML-500 with the use of this guide.
ML-500INSTALLATIONDATA
TheML-500Room CombiningSystemisshippedwiththefollowingequipment:
• Audio Control Unit
• 4 wallplates with one packet of wallplate connectors (Crimp terminals)
• PM-2 Power Supply
Refer to the hookup diagram before installing.
The Audio Control Unit is to be located wherever the audio amplifiers are located. If the amplifiers are rack
mounted,then the ML-500 should belocated near the top ofthe rack. The PM-2 power supplycan be located at
therear of the rack or on a nearbyshelf.
Thewallplates are mounted instandard3-gangelectrical boxes (23/4"deep)in the wallwiththefour 6/32 screws
(supplied).
Prior to fastening the wallplate, connect the wallplate wires to the cable that homeruns to the main unit. The
packetof wallplateconnectorspermits direct connectiontothe cablewithno wirestripping.
IfyouuseWest Penn Wire#271 cable (8-conductor#22AWG stranded) the colorsfromthewallplatewillmatch
thecable colors. The pinout forthepluggablescrew connectors can befoundinthe control hookupdiagram.
NOTE: Noaudiolines are run to thewallplates.

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244 Bergen Boulevard, West Paterson, NJ 07424 Tel [phone] Fax [phone] E-Mail [email protected]
AUDIO PRODUCT GROUP
CONTROL HOOKUP DIAGRAM
NOTE: Use the insulated self piercing connectors to connect the wallplate wires to the already installed cable (West Penn
#271). To use these splicing connectors just insert the wallplate wire and the corresponding cable wire and crimp with a pair of
plier
ROOM 3 WALLPLATE ROOM 1 WALLPLATE

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244 Bergen Boulevard, West Paterson, NJ 07424 Tel [phone] Fax [phone] E-Mail [email protected]
AUDIO PRODUCT GROUP
AUDIO HOOKUP DIAGRAM
Themicrophone and musicinputsarethree pin screwterminalsand can bewiredoneof two ways:
Forbalancedlines(theusualcase withlinelevel audio):
H H(Hi)
L L(Lo)
S S(Shield)
Forunbalancedlines(theusualcasewithmusicsources)usingtheRCAtype connector
Centerconductor H(Hi)
Shield L (Lo)
S(Shield)

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244 Bergen Boulevard, West Paterson, NJ 07424 Tel [phone] Fax [phone] E-Mail [email protected]
AUDIO PRODUCT GROUP
Theaudiooutputs are screw terminal connectors and canbewiredoneof two ways:
Forbalancedlines (the usual case):
H H(Hi)
L L(Lo)
S S(Shield)
Forunbalancedlines(usingstandard mic cable)
Hi/red Hi / red color
Lo/black Lo/black color ( the shield conductor is tied to the
blackconductor atreceivingend).
SYSTEM SET UP (TURN ON)
OPERATE MUSIC:
Referring to the audio hookup diagram, connect the room microphones, and room amplifiers. Connect the
background music source to the MUSIC INPUT located on the rear of the Audio Control Unit. Set each
wallplate as shown below. Check to make sure the input trim pot (MUSIC GAIN) on the rear of the unit is
set midway. Play some music and then adjust the amplifier volume for equal loudness in each room (this is
very important).
Onlyreadjust the GAINSET(locatedon the rearoftheAudio ControlUnit)tomaintain a comfortablelevelineach
roomif the musicsourcehas a verylowoutput (not usuallythecase).
ML-104
Outputs

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244 Bergen Boulevard, West Paterson, NJ 07424 Tel [phone] Fax [phone] E-Mail [email protected]
AUDIO PRODUCT GROUP
OPERATE MICROPHONES:
Shut music off and turn microphones on in all rooms. Wallplates in all rooms should look as follows:
Havesomeone talk intoeachroom’smicrophone inturnand adjust eachroom’s mixeroutputlevelfor acomfort-
ablelisteninglevel(this meansthesamelevelas agreeduponwhensettingup themusic)ineachroom.
COMBINING ROOMS
Tocheckthewallplatescombiningfunction,adjustallwallplatesasshown:
Whenspeaking into aroom’s microphone, one’svoiceshouldbe heard equallyloudinall rooms. Proceednextto
demonstratedifferentcombinations

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244 Bergen Boulevard, West Paterson, NJ 07424 Tel [phone] Fax [phone] E-Mail [email protected]
AUDIO PRODUCT GROUP
Combine any tworoomsandleave two separatebysetting the wallplatesasfollows:
Whenspeaking into thecombinedroom’smicrophone,thevoiceshould beheardonlyin thecombinedrooms. The
othertwo roomswillbesilent.
Combine rooms 1 and 2 and also rooms 3 and 4 by setting the wallplates as shown:

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244 Bergen Boulevard, West Paterson, NJ 07424 Tel [phone] Fax [phone] E-Mail [email protected]
AUDIO PRODUCT GROUP
Thisconfigurationpermits two separate setsofcombinedrooms to operate independentofeachother. Checkthis
byhaving someone else speakintothe other combined rooms. Theaudioineach pair ofcombinedroomsshould
be separate.
Finally,seteachwallplateasshown (musicwillbe heardineach room).Thisconcludes theinstallationof theML-
500.
TheML-500systemshould now be in full operation and ready to be turnedovertoyourclient. Remembertotake
yourclientthroughthe simplesetupprocedures.
A “QUICK SETUP GUIDE” has been provided to simplify day to day operation.
Please instruct the user on the proper use of the ML-500 with the use of this guide.

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244 Bergen Boulevard, West Paterson, NJ 07424 Tel [phone] Fax [phone] E-Mail [email protected]
AUDIO PRODUCT GROUP
ML-500 QUICK SETUP GUIDE