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MUSICSON DP-H User manual

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1
DPSYSTEMSUSERMANUAL
1.-INTRODUCTION......................................Page2-10
1.1.-DP-3SYSTEM...............................Page3-7
1.1.1.-DP-HENCLOSURE...................Page4,5
1.1.2.-DP-SBENCLOSURE...................Page6,7
1.2.-DP-4SYSTEM..............................Page8-10
1.2.1.-DP-GENCLOSURE....................Page8,9
1.2.2.-SUB218BSENCLOSURE...............Page10
2.-ELECTRONICSANDAMPLIFICATION.....................Page11-13
2.1.-DP-3SYSTEM...............................Page11,12
2.2.-DP-4SYSTEM...............................Page12,13
3.-SYSTEMWIRINGSCHEMATICS.........................Page14,15
4.-DP-SYSTEMSPAREPARTS............................Page16,17
5.-SYSTEMSETUP......................................Page17-20
5.1.-DP-3SYSTEM...............................Page17-19
5.2.-DP-4SYSTEM...............................Page19,20
6.-CONTROLELECTRONICS...............................Page21-27
6.1.-ISP-2022.................................Page21-24
6.2.-ISP-1014.................................Page24-27
7.-CURVES.........................................Page28-31
7.1.-RESPONSECURVES..........................Page28,29
7.2.-POLARGRAPHICS.........................Page29-31
8.-SETUPRECOMMENDATIONS.ELEVATIONSSYSTEMS........page32-37
8.1.-DP-3SYSTEM...............................page32,33
8.2.-DP-4SYSTEM...............................Page33-37
9.-USEFULSETUPSWITHTHEDP-4.......................Page37-41
10.-WARRANTYEXTENSIÓN...............................-+Page42
WE,ATMUSICSONWANTTOTHANKYOUFORTHETRUSTSHOWNTOWARDSOURPRODUCTS.
PLEASE READ THIS MANUAL CAREFULLY BEFORE STARTING YOUR NEW DP-3 OR DP-4
SYSTEM, IN ORDER TO AVOID ANY KIND OF PROBLEM AND TO OBTAIN ITS HIGHEST
PERFORMANCE.REMEMBERTHATYOUHAVEJUSTOBTAINEDAHIGH-TECHNOLOGYPRODUCT.
INORDERTOCONTACTUSFORANYREASON,PLEASESEEOURWEBSITE.
WEB:www.musicson.com
E-MAIL:musicson@musicson.com
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1.-INTRODUCTION
The new DP product line, which has been developed and manufactured by
Musicson, conceals an important technological step forward in sound
reinforcement.Itsapplicationsrangefromliveconcertstorecordedmusic
inopenspacesorclosedrooms.
Musicson'sengineershaveusedstate-of-the-artlastgenerationsoftware
tools in order to simulate acoustic elements as well as to produce the
correspondingprototypes.
ThedifferentfrequencywaysthatformtheDP-serieshavebeenoptimised,
evenbeforeproducingtheprototypes,throughseveralsimulationprocesses.
In order to develop the low- frequency units, a special care has been
taking, not only simulating the differences in frequency response and
performance,butalsofurtherfactorshavebeentakencareofforthefirst
time.
Maximumexcursionofthemobilepartsofthespeakershavebeenoptimised
byactingonthegeometryoftheenclosures,resonancefrequency,lengthand
widthofwave-guidingeveryelementsthatform,forexample,afoldedhorn
unit.
Ontopofthis,veryconcretefiltershavebeenusedwithintheISP-1014and
the ISP-2022 dynamics processors in order to achieve an optimal frequency
response and a minimum loudspeaker excursion, resulting in a reduced
mechanicalfatigueoftheseelements.
Ontheotherhand,equallyimportantfactors,suchasthesoundpressure
level, acoustic power, extreme current and voltage values at the speaker
poles,speedandaccelerationoftheelectroacousticelementsandtheair
movedwithintheenclosuresandthroughthevents,etc.
Thesimulationsoftwarehasalsobeenusedinordertooptimisehighand
mid- frequency band functioning, something almost unthinkable some years
ago. A linear frequency response, effective bandwidth, sound pressure and
alsofactorssuchasdirectivity,horizontalandverticalspread,possible
frequencyoverlappingproducedthroughhornsandphaseplugs,dependingon
thedistancetotheaudience,areallfactorsthathavereceivedcarefuland
in-depthattention.
In an ongoing step, all this information has been checked and adjusted
withthefirstprototypesthroughdifferentaudioanalysissoftware.
AllthishasresultedinthefinaldevelopmentoftheDPsoundsystems,
formed by four different enclosures and two signal processors, power
control, that are designed to perfectly fit together for an optimum
performance,frequencyresponseandfunctionalparameters.
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1.1.-DP-3SYSTEM
ThefirstsystemdevelopedwiththesefourenclosuresistheDP-3.Thisisan
activethree-waysystem,featuringthreedifferentenclosures:TheDP-Hfor
thereproductionofhigh-midfrequenciesandtwoequallyshapedenclosures
to reproduce low and very-low frequencies: DP-SB1 and DP-SB2. This whole
systemiscontrolledthroughtheISP-1014processor.
1.1.1.-DP-HENCLOSURE
The DP-H enclosure is an active-two-way acoustic system to reproduce
high-mid frequencies, conceived as al long-throw unit for great musical
indoorandoutdoorevents.
Bothwaysarebuiltontotheirownhorn,optimisedtocompletelycontrol
theirdispersionangles.
Forthereproductionofthemediumfrequencies,a12”speakerwitha3”
(77mm)movingcoil,mountedonanenhancedmagneticsystem,hasbeenused
in order to increase performance without increasing harmonic distortion.
Also,theoutputsurfacehasbeenreducedto14cm(5.5”)toincreaseits
efficiency.Thishasbeenachievedthroughthedesignofaninnovativephase
plug,builtwiththreeconcentricindependentpieces.Thisallowsustohave
a constant distance between the cone surface and the throat, eliminating
phase cancellations produced in other phase plug types such as ob’s or
bullets. The speaker also features cooling elements for the moving coil,
allowing higher power levels and, at the same time, and much lower power
compression through heat. The cone has received a special coating that
avoids deformation through higher-pressure levels, translated into lower
harmonicdistortionathighpowerlevelsandprotectingitagainstadverse
external agents such as humidity. Through all this an extremely flat
frequencyresponseupto1200Hzisachieved(togetherwiththeuseofthe
4
ISP-1014), offering, thus, a high level of clarity and intelligibility
withinthevocalfrequencyrange.
For the high and high-mid frequencies, we have used a 4” (100mm)
diaphragm,2”-throatcompressiondriver.ThisdriverfromARPfeaturesvery
specialcharacteristics.
1.-Anoptimisedmagneticstructurehasbeenusedformaximumefficiency.
Inordertoachievethis,aNeodymiummagnethasbeenused,offering:
a. - 20% more induction in the magnetic gap, increasing the energy
transferred to the coil and, thus, to the moving system. This means an
averageperformanceincreaseof2dBtothe2”driver,thisbeingespecially
significantforfrequencyhigherthan100Hz,wherethisincreasereachesup
to4dB.Alinearresponseupto20kHzisachievedthisway.
b.-Areductioninweightof45%and25%intheoveralldiameter.
2.-Ontheotherhand,atitaniumdiaphragmwithaspecialconfiguration
hasbeenusedinordertoreduceharmonicdistortion.Themembraneisfixed
toasuspensionmadeofatechnicalpolymer.Theuseofthispolymerhastwo
reasons: first, the self-resonance of this material is lower within the
audible frequency range, when used at high power levels, second, this
material is more resistant to deformation through diaphragm excursion. It
hasbeenproventhattitaniumsuspensionsdeterioratethefrequencyresponse
andincreasedistortionlevelsafter3to5yearsofuse,withinthissize
of drivers. The mechanical resistance of these materials is much higher,
almostdoublingtheirlifecycle.
Inordertooptimisethefrequencyresponse,anexponentialhornhasbeen
used,allowingthesystemtoperformwithoutlossesupto19500Hz.
This enclosure includes a rigging system to configure clusters, which
enhancethesoundspreadandthrow.Itincludesalsoafrontgrille,covered
withasturdyfilteringtechnicalfoamtoprotectthespeakers.(OnlyDP-4)
5
TECHNICALSPECIFICATIONFORMIDFREQUENCIES
-SPL(1W/1m)............108.5dB
-Max.SPL(Cont.).........133.5dB(Calculated)
-Covering(dispersion)....60x40º
-RMSPower................350W
-Impedance................8Ohm
-Frequencyresponse.......220-1200Hz(conISP-1014)

TECHNICALSPECIFICATIONFORHIGHFREQUENCIES
-SPL(1W/1m)...........112dB
-Max.SPL(Continuo).....130.5dB(Calculado)
-Covering(dispersion)...40ºx20º(Hasta10KHz)
-RMSPower...............150W
-Impedance...............8Ohm
-Frequencyresponse......1200-19500Hz(conISP-1014)


RESPONSEOFMIDFREQUENCIES,HIGHFREQUENCIES
ANDDP-HENCLOSURE(WITHISP-1014)
6
1.1.2.-DP-SBENCLOSURE
 
ThisenclosureistobeconfiguredwiththeDP-HtoformtheDP-3livesound
system.
Forbassandsubbassfrequencysoundreinforcement,afoldedhornenclosure
hasbeendevelopedandoptimised,inordertoensurehighperformancelevels
with“kicking”bassesandreallydeepsubbasses.
Special care has been taken in the design and optimisation of the wave-
guidingpartsoftheenclosure,includingthroats,openingsandlengthsof
each one. The result is a best-possible response with a minimum speaker
excursion.Thiswayalinearresponseandabandwidth,reachingfrom45Hz
to220Hz,havebeenachieved,performinganSPLof102dB1W/m.
Toconfigurea DP-3system, twounitsareneeded,calledDP_SB1andDP-
SB2,whichareequalandusea700W18”speakereach.MUSICSONengineers
havealsooptimisedthisspeaker,inordertoimprovetheirresponsewithin
thistypeofenclosure.
On one hand, a more powerful magnetic structure is used to improve the
speaker’sdynamics,enhancingthetransientresponse.Atthesametime,a4”
(100mm) moving coil, mounted on a Kapton® former, is used. The thermally
efficientcopperiswoundonbothsidesoftheformer,achievinghigherheat
dissipationandstructuralstiffness.Thisallowsthepowerapplicationof
700WRMS(3000Wpeak).
Alsotheheightofthecoilhasbeenenlarged,inordertoallowagreater
excursion.Inorder toimprovethecoolingofthecoil,twocoolingvents
arepresent,differentfromtheconventionalsinglecoolingvent.
Itincludesalsoafrontgrille,coveredwithasturdyfilteringtechnical
foamtoprotectthespeakers.

7
TECHNICALSPECIFICATIONS(EACHENCLOSURE)
-SPL(1W/1m)............102.5dB
-Max.SPL(Continuo)......131dB(Calculated)
-RMSPower................750W
-Impedance................8Ohm
-Frequencyresponse.......45-220Hz-3dB(withISP-1014)



RESPONSEOFTHEDP-SBENCLOSURE(WITHISP-1014)
1.2.-DP-4SYSTEM
This next, more sophisticated sound system is configured through four
active ways. Therefore, the enclosure model DP-H is used for high-mid
frequencies,asdescribedearlier.Asecondenclosure,theDP-G,isaddedto
reproduce bass frequencies and the SUB-218BS for the sub bass range,
including slight modifications to its predecessor to adapt it to the DP
series.ThewholeconfigurationiscontrolledthroughtheISP-2022processor
for the SUB-218BS and through the newly developed ISP-1014 for the other
threefrequencyways.
AstheDP-Hhasalreadybeendescribedintheprevioussection,wewill
nowproceedwiththedetailsoftheothercomponents:

8

1.2.1.-DP-GENCLOSURE
TheDP-Genclosureisconceivedtoreproducethebassfrequencyrange.It
willonlybeusedwiththe4-wayactiveDP-4configuration.
Thisenclosureisdesignedasadoublesixthorderband-passsystem.This
configuration allows higher sound pressure levels within a narrower band
than other systems, suchas reflexor hermeticsystems. Throughacorrect
approximation, its two points of minimum excursion can be set within the
workingrange,thusreducingitsoverallmeanexcursionby40%atthesame
powerlevel.Thisallowsustoapplymorepowertothespeakersandincrease
thelongevityofthemobileelementsatthesametime,keepingperformance
andresponseattheoriginallevels.
The DP-G uses two identical 500W rms 15”loudspeakers, featuring a4”
(100mm) coil, wound on a Kapton® former fixed onto a double spider and
mountedonapowerfulmagneticsystem.Allthisresultsinareproductionof
kickingbasses.
This enclosure includes a rigging system to configure clusters, which
enhancethesoundspreadandthrow.Itincludesalsoafrontgrille,covered
withasturdyfilteringtechnicalfoamtoprotectthespeakers.
9
TECHNICALSPECIFICATIONS
-SPL(1W/1m)............105dB
-Max.SPL(Cont.).........137dB
-RMSPower................1000W
-Impedance................4Ohm
-Frequencyresponse.......65-220Hz(conISP-1014)

RESPONSEOFTHEDP-G(WITHISP-1014)
1.2.2.-SUB-218BSENGLOSURE
Thisenclosureactsasasubbassreinforcementsystem,usedwiththeDP-
4 sound system. It is built as a reflex box, using two identical 18”
speakers. Its inside and the measures and shape of the vents have been
10
carefullystudiedtooptimisethefunctioningoftheloudspeakers.Through
itsnewdesign,thefrequencyresponsehasbeenenhancedandtheexcursion
ofthemobilecomponentshasbeenminimised.TogetherwiththeISP-2022,its
frequencyresponserangesfrom28,5Hzto90Hz(-3dB),resultinginavery
deepandpowerfulsubbassresponse.
Itincludesalsoafrontgrille,addingstiffnesstothesystemanditis
covered with sturdy, highly resistant filtering technical foam. It also
includes100mmcasterstoeasehandling.

TECHNICALSPECIFICATIONS
-SPL(1W/1m)............102dB
-Max.SPL(Cont.).........134dB
-RMSPower................1200W
-Impedance................4Ohm
-Frequencyresponse.......28.5-90Hz-3dB(conISP-2012)


RESPONSEOFTHESUB-218BSENCLOSURE(WITHISP-2022)
2.-ELECTRONINANDAMPLIFICATION
Musicsonservesallthenecessaryelectronicstocontroltheconfigured
systemsinconvenientflightcases.TheuseofMusicson’ssignalprocessors
isabsolutelynecessary,sincetheycontaintheexactfiltersforanoptimal
11
performanceofeachfrequencyway,controlthepowerappliedtoeachspeaker
andtakecareofpresetphaseadjustments,inordertoresultinacorrect
phasesumofthedifferentbands.
2.1.-DP-3SYSTEM
The DP-3 system features three active ways. Its basic configuration is
formedof:
OneDP-SB1,oneDP-SB2,andoneDP-Hperchannel.
Topowerthe18”speakersoftheDP-SB1andDP-SB2,weuseonechannelof
theMusicsonHE-1202professionalpoweramplifier,featuring1200Wrmsper
channel.Bothspeakersarewiredinparallelthroughtherearpanelofthe
enclosure.
Topowerone12”speaker,wewilluseonechanneloftheMusicsonP-804
professional amplifier, featuring 800 W rms per channel. The 2”-driver of
theDP-Hwillbepoweredthroughanotherotherchannelofthisamplifier.
Thus,foraminimumstereoconfiguration,wewillneedaflightcasethat
includes one Musicson HE-1202 and one Musicson P-804 amplifier. Both are
presetatthefactoryforoptimumperformance.
The flight case has the connections for signal input and speaker power
output,aswellasthemainsconnector,mountedonachassisonthefront.
Ontherear,asecondchassisservesexclusivelytoconnectthisflightcase
totheextensionunit,featuringtwosignaloutsforthebasssignalandan
additional“Schuko”sockettosupplypowertothispowerextensionunit.
Furthermore, the signal processor ISP-1014 shall be used together with
the power amplifiers, as they are specifically designed to optimise the
system’s performance. This processor includes an active three-way filter,
configured with 24 dB/oct Linkwitz-Riley filters, with both high pass and
lowpass,optimisedtoimprovethefrequencyresponseofallthreeways.It
also includes a fourth active high pass filter that servesto effectively
and quickly equalise the highest frequencies (from 10 to 20 kHz) of the
high-frequencyway.

It also counts on independent power control circuits for each way with
attack and release thresholds adjusted to each frequency margin, avoiding
the“pumping”effectwhenthesystemisworkingatfullperformance.
12
The use of the processor is also important due to the fact that it
includes delay circuitry between the ways that produce an optimisation of
the sum of them all at their crossover frequencies, obtaining a totally
linearresponse.
Theamplificationandcontrolelectronicsofthecompletesystemisbuilt
intooneflightcaseforbothchannels(stereo).


2.2.-DP-4SYSTEM
Thisisanactivefour-wayconfigurationoftheDP-system.Itcomprises
oneSUB-218BS,2DP-Gand2DP-Hperchannel,asabasicconfiguration.
 
Topowerthetwo18”speakersoftheSUB-218BSwewilluseonechannelof
theMusicsonHE-1202professionalpoweramplifier,featuring1200Wrmsper
channel.Bothwillbewiredinparallelinternally.
Topowerthefour15”speakersoftheDP-Genclosure,twochannelsofone
oftheMusicsonP-804professionalpoweramplifiers,featuring800Wrmsper
channel.
Topowertwo12”speakersandtwo2”driversontheDP-Henclosure,two
furtherchannelsoftheMusicsonP-804professionalpoweramplifierswillbe
used.
 
TheflightcaseconfigurationofthissystemwillbedifferenttotheDP-
3,sincewewillfind,forstereo,thepowerandcontrolelectronicsforthe
sub bass with the ISP-2022 dynamics processor in one flight case and two
furthermonoflightcaseswiththeconfigurationdescribedbefore,thatis,
one P-804 for the other three ways, together withthe ISP-1014 processor,
especiallysetupfortheDP-4.


The importance of the use of Musicson power amplifiers and processors
8active filters, power controllers internal phase adjustments, etc.) has
beenexplainedintheprevioussection.
3.-SYSTEMWIRING
13
All Musicson DP enclosures have different rear panels with four- and
eightpinSpeakon®sockets,servingassignalinputsfromtheamplifiersor
tolinkthemtofurtherenclosures.
On the flight cases we will find eight-pin Speakon® connectors to the
enclosures,exceptonthesubbassflightcaseoftheDP-4,wherewesill
findfour-pinSpeakons.
Thecodesusedforthedifferentspeakercabinetsare:
1.-SUB-218BS.Pin1+toterminal+ofone18"
Pin1-""-
Pin2+toterminal+oftheother18"
Pin2-""-oftheother18"
2.-DP-SB1.Pin1+toterminal+ofthe18".
Pin1-toterminal-ofthe18".
 Further pins connected in parallel with the second 8-pin
Speakon®
3.-DP-SB2.Pin1+toterminal+ofthe18".
Pin1-toterminal-ofthe18".
 Further pins connected in parallel with the second 4-pin
Speakon®
4.-DP-G.Pin1+toterminal+ofthe15".
Pin1-toterminal-ofthe15".
Further pins connected in parallel with the second 4-pin
Speakon®
5.-DP-H.Pin1+toterminal+ofthe12".
Pin1-toterminal-ofthe12".
Pin2+toterminal+ofthe2"driver.
Pin2-toterminal-ofthe2"driver.
ItisveryimportanttoknowthatthespeakercabinetshavetwoSpeakon®
connectors, one used as the signal input and the other one serves as a
parallel connection to further enclosures of the DP-system. Cables must
alwaysbeconnectedasshownontherearpanels.
14
4.-DPSYSTEMSPAREPARTS
Before we start dismantling any acoustic part of a system, we should
checkfirst,wherethefailuremayhaveoriginatedandlocateditexactly.
15
We first have to make sure that the problem is not due to any element
“previous” to the electronics racked in the flight cases (such as
equalisers, mixing consoles, effects, etc.). If the problem persists, we
should check for the correct functioning of the electronics of the DP-
system: make sure that the processors are “ON” and no “MUTE” button is
pushed.Alsomakesurethatthepoweramplifiersare“ON”andthattheyare
receivingsignalfromtheprocessors.Donethis,checkthecablesfortight
and correct insertion and good condition. If Speakon® connectors are
“locked-in” correctly, they always make good contact. Even so, you might
wanttotryanothercabletoensurecorrectfunctioningofthesecomponents.
Onceallthesestepshavebeenundertakenandtheproblempersistsinany
elementoftheDP-3orDP-4,youmaywanttoproceedtakeaparttheaffected
enclosure,extractingthedamagedspeaker.
Ifwe areworkingonan18”speakeroftheSUB-218BS,youmustunscrew
thefrontgrillewithaPhillips-(cross-)screwdriverbeforeunscrewingthe
speakerwithanAllen-tool.Nowyoumaytakeoutthespeaker.
Ifweareworkingonan18”speakerofaDP-SB1orDP-SB2,wewillfirst
unscrewtheupper(orlower,dependingonthemodel)paneltogainaccessto
the 18” speaker. You may now unscrew the 8 screws of the speaker with an
Allen-toolandtakeoutthespeaker.
Incasethata2”driveroftheDP-Histhebrokenelement,firsttake
aparttheupperandlowerriggingaccessoriesonthesidesoftheenclosure,
usinganAllen-screwdriver,thescrewsgoingthroughthewoodonbothsides.
Onceunscrewedtheaccessories,youcantakeoutthegrillethroughslight
bending,sinceithasnofurtherfixingdevices.Oncethegrilleisremoved,
you may see the driver and the 12” speaker. The driver is removed by
unscrewingthehornwithaPhillipsscrewdriver,takingoutthehorn-driver
assembly.Thenyou’rereadyforreplacingthemembrane.
If we need to work on the 12” speaker, first remove the wooden back
panel.UseaPhillipsscrewdriverforthispurpose.Pleaseremovethepanel
with care, since the connector panel is also fixed to it and you might
damage the wiring to the driver and the 12” speaker. Now you remove the
Phillipsscrewsfixingthespeakertothewoodenbase.
Thesparepartsfortheseloudspeakershavethefollowingreferences:
1.Sparefor18”speaker:SpareforL-18800/8ohmforDP-3orDP-4
2.Sparefor15”speaker:SpareforL-15500/8ohm
3.Sparefor12”speaker:SpareforM-12300/G/8ohmforDP-H
4.Sparefor2”compressiondriver:SpareforHT-210/N/8ohm.
16
5.-CONECTIONSANDSETUP
Sine the Musicson DP system is “ready-to-sound” live equipment, we
provideallelementsnecessarytoamplify,controlandwirethesystemthe
efficientandfastway.
Thematerialdelivereddependsonthesystemconfigurationchosenbythe
user:

5.1.-DP-3SYSTEM
 ThebasicsystemthatcanbeconfiguredfromtheDP-SB1,DP-SB2andDP-H
enclosuresisasfollows:
 

 
ThematerialdeliveredbyMusicsoncontains:
-1Flightcasewith1MusicsonP-804poweramplifier
1MusicsonHE-1202poweramplifier
2ISP-1014dynamicsprocessors
Everythingconvenientlywired
ThisflightcasehasarearpanelwithXLRsocketsforthesignalinput
and connection to further, equal racks for greater configurations. Power
cord for 220 VAC / 50-60Hz mains is included. It also includes a
supplementalpowersocketandtwo8-pinSpeakon®connectorsforthespeaker
enclosures.

-Cables:2cablesof15mwithSpeakonde8pins
2cablesof1.5mwithSpeakonde8pins
17
2cablesof1.5mwithSpeakonde4pins

-Speakerenclosures:2DP-SB1
 2DP-SB2
  2DP-H
-Wiring:Thetwo15mcableswith8-pinSpeakonsdirectlyconnecttherack
withthe 2DP-SB1enclosures.Thetwo1,5mcableswith8-pinSpeakonsare
usedtoconnecttheoutputofbothDP-SB1tobothDP-SB2.Finally,thetwo
1,5mcableswith4-pinSpeakonsareusedtoconnecttheoutputofbothDP-
SB2totheinputsofbothDP-H.
 ATTENTION: In order for the speakers to receive their signal, Speakon®
connectorsmustbelocked,turningthemclockwiseuntilthelockingdevice
snapsin.
Auxiliary elements, such as effects, equalisers, mixing consoles, etc.
arenotdeliveredwiththisliveequipment.
 Toexpandthesystemtodoubleitspower,Musicsonwilldeliveraflight
case containing solely a Musicson HE-1202 power amplifier, which will be
connected to the signal outputs of the main rack, including the ISP-1014
signalprocessors.
Themod.DP-Henclosureswillbeconnectedinparallelonbothchannels,
whereasthepoweramplificationrackwillpowerthebasssystemsDP-SB1and
Dp-SB2frombothchannels,asshownonthefollowingdiagram:
18
5.2.-DP-4SYSTEM
Thebasicsystemthatcanbeconfigured,usingtheenclosuremodelsSUB-
218BS,DP-GandDP-Hisasfollows:

ThematerialdeliveredbyMusicsoncontains:
-2Racks,AyBeachonecontaining1MusicsonP-804poweramplifier
1ISP-1014dynamicsprocessor
Allthisconvenientlywired.
These flight cases have a rear panel with XLR sockets for the signal
input and connection to further, equal racks for greater configurations.
Power cord for 220 VAC / 50-60Hz mains is included. It also includes a
supplementalpowersocketandtwo8-pinSpeakon®connectorsforthespeaker
enclosures.
-1RackCwith1MusicsonHE-1202poweramplifier.
1ISP-2022dynamicsprocessor.
19
-Cables:4cablesof15mwithSpeakonof8pins
2cablesof15mwithSpeakonof4pins
4cablesof1.5mwithSpeakonof4pins

-Speakerenclosures:2SUB-218BS
4DP-G
4DP-H
-Wiring:Thetwo15mcableswith4-pinSpeakonsareconnecteddirectlyfrom
theracktobothSUB-218BS.

Two 1,5m cables with 8-pin Speakons are to connect directly Rack A to
bothDP-G.Finally,the1,5mcableswith4-pinSpeakonsaretobeusedto
connecttheoutputsofbothDP-GwithbothDP-H.Thesameprocedureapplies
toRackBandtheotherDP-GsandDP-Hs.
Auxiliary equipment, such as effects, equalisers, mixing consoles,etc.
isnotdeliveredwiththeliveequipment.
InorderfortheDP-4SYSTEMtoworkcorrectly,pleasemakesurethatyou
linkthe signalcomingfromthe mixingconsole(orfromapossibleeffect
rack)tothesubbassrackandfromtheretobothbass-mid-highchannel,as
shownonthefollowingdiagram:
ATTENTION: In order for the speakers to receive their signal, Speakon®
connectorsmustbelocked,turningthemclockwiseuntilthelockingdevice
snapsin.

6.-CONTROLELECTRONICS
Sine the Musicson DP system is “ready-to-sound” live equipment, we
provide all elements necessary to amplify (power amplifiers), control
(dynamicsprocessors)andwirethesystemtheefficientandfastway.
20
The use of these processors: ISP-2022 and ISP-1014 mandatory, not only
for the correct functioning of the acoustic systems, but also the
manipulation,substitutionthroughotherprocessorsoractivefiltersbythe
user will change these parameters, causing an immediate void on the
guaranteegrantedbythemanufactureronthesesystems.
Themaincharacteristicsoftheprocessorsarethefollowing:
6.1.-ISP-2022

ThisprocessorisonlyusedwhenacquiringaDP-4configuration.
Its configuration and characteristics turn this processor into a vital
elementinobtainingmaximumperformanceofthesubbassenclosuresofthe
DP-4system,thatis,theSUB-218BS.
Itcomesinstalledandwiredinaflightcase,togetherwiththeMusicson
HE-1202poweramplifier.
Itsmainfeaturesare:
Two-wayactivefilterwithadjustablecrossoverfrequency.
24dB/OctLinkwitz-Rileyfilters.
Highpassandlowpassfiltersforthesubbassway.
Highpassfilterforthemid-highway.
Variablegainforthelowpassoutput
Adjustabledelaybetweenways.
Phaseinversionforthelowpass.
All-passorhigh-passselectorforthemid-highoutput.
ActivepowercontrolcircuitrypresetbythemanufacturerfortheSUB-218BS.
-DESCRIPTIONOFTHEFUNCTIONS.
 1. -LOWINVERSION:Whenthisswitch is onposition “NO”,themid-high
andlowfrequencyfiltersareinphase.
Atthe“YES”position,thesetwooutputsareinoppositephase(180º).
ATTENTION!Thephasementionedisreferredtotheelectricalphase,NOT
theacousticalphase.Itispossiblethat,inordertokeepthe(acoustic)
phase
of the sub bass way output in-phase, the electrical phase needs to be
invertedforsomeset-ups.
2.-LOW-HIFREQUENCY:Thisthree-positionselectorallowsselectingthe
crossoverfrequencyofbothoutputs,thevaluesbeing90,120or200Hz.The
switchingaffectssimultaneouslybothways.
FortheDP-4systemthevaluetobeselectedis90Hz.
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