Toa DP-SP3 User manual

DIGITAL
SPEAKER
PROCESSOR
DP-SP3
PRESET
STATUS
1
RUN LINK
4
3
2
INPUTS
PEAK
+12
12
0
–
40
OUTPUTS
PEAK
POWER
ON
OFF
+12
0
123456
MUTE
–
40
OPERATING INSTRUCTIONS
DIGITAL SPEAKER PROCESSOR DP-SP3
Thank you for purchasing TOA’s Digital Speaker Processor.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

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TABLE OF CONTENTS
1. IMPORTANT SAFETY INSTRUCTIONS ........................................... 3
2. SAFETY PRECAUTIONS ............................................................................. 4
3. GENERAL DESCRIPTION .......................................................................... 6
4. FEATURES ............................................................................................................ 6
5. HANDLING PRECAUTIONS ...................................................................... 6
6. NOMENCLATURE AND FUNCTIONS ................................................. 7
Front ............................................................................................................................. 7
Rear ............................................................................................................................. 8
7. SYSTEM CONFIGURATION EXAMPLE ............................................. 9
7.1. Control by the External Control Device ................................................................. 9
7.2. Control by the M-864D Digital Mixer ................................................................... 10
7.3. Control by a PC ................................................................................................... 10
7.4. Control by Various Types of Devices ................................................................... 11
8. MUTE FUNCTION OPERATION ............................................................ 12
8.1. Mute Indicators .................................................................................................... 12
8.2. Turning on the Mute Function by the DP-SP3 .................................................... 13
8.3. Turning OFF the Mute Function by the DP-SP3 ................................................. 13
9. PRESET NUMBER INDICATION FUNCTION ............................... 14
10. CONTROL METHOD USING
THE CONTACT INPUT TERMINALS ............................................... 14
10.1. Preset Memory Recall ....................................................................................... 14
10.2. Output Volume Control ...................................................................................... 16
10.3. Output Mute ...................................................................................................... 16
11. FIRMWARE VERSION INDICATION ................................................. 17
12. INITIALIZING THE DP-SP3 .................................................................... 18
13. INSTALLATION .............................................................................................. 19
13.1. Installation Precautions ..................................................................................... 19
13.2. Mounting in a Rack ........................................................................................... 20
14. CONNECTION ................................................................................................ 20
14.1. Connection Example ......................................................................................... 20
14.2. Removable Terminal Plug Connection .............................................................. 21
15. BLOCK DIAGRAM ....................................................................................... 22
16. SPECIFICATIONS ........................................................................................ 22
17. DIMENSIONAL DIAGRAM ...................................................................... 24

3
1. IMPORTANT SAFETY INSTRUCTIONS
• Readtheseinstructions.
• Keeptheseinstructions.
• Heedallwarnings.
• Followallinstructions.
• Donotusethisapparatusnearwater.
• Cleanonlywithdrycloth.
• Donotblockanyventilationopenings.Installinaccordancewiththemanufacture'sinstructions.
• Donotinstallnearanyheatsourcessuchasradiators,heatregisters,stoves,orotherapparatus(including
ampliers)thatproduceheat.
• 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tintoyouroutlet,consultanelectricianforreplacementoftheobsoleteoutlet.
• Protectthepowercordfrombeingwalkedonorpinchedparticularlyatplugs,conveniencereceptacles,and
the point where they exit from the apparatus.
• Onlyuseattachments/accessoriesspeciedbythemanufacturer.
• Useonlywiththecart,stand,tripod,bracket,ortablespeciedbythemanufacturer,
orsold withtheapparatus.When acartisused,usecautionwhen movingthecart/
apparatus combination to avoid injury from tip-over.
• Unplugthisapparatusduringlightningstormsorwhenunusedforlongperiodsoftime.
• Referallservicingtoqualiedservice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.

4
When Installing the Unit
• Do not expose the unit to rain or an environment
where it may be splashed by water or other liquids,
asdoingsomayresultinreorelectricshock.
• Use the unit only with the voltage specied on
theunit.Usingavoltagehigherthanthatwhichis
speciedmayresultinreorelectricshock.
• Do not cut, kink, otherwise damage nor modify
the power supply cord. In addition, avoid using the
power cord in close proximity to heaters, and never
place heavy objects -- including the unit itself -- on
the power cord, as doing so may result in re or
electric shock.
• Avoid installing or mounting the unit in unstable
locations, such as on a rickety table or a slanted
surface. Doing so may result in the unit falling
downandcausingpersonalinjuryand/orproperty
damage.
• Since the unit is designed for indoor use, do not
install it outdoors. If installed outdoors, the aging of
parts causes the unit to fall off, resulting in personal
injury. Also, when it gets wet with rain, there is a
danger of electric shock.
When the Unit is in Use
• Should the following irregularity be found during
use, immediately switch off the power, disconnect
the power supply plug from the AC outlet and
contact your nearest TOA dealer. Make no further
attempt to operate the unit in this condition as this
maycausereorelectricshock.
· If you detect smoke or a strange smell coming from
the unit.
· If water or any metallic object gets into the unit
· If the unit falls, or the unit case breaks
· Ifthepowersupplycordisdamaged(exposureof
thecore,disconnection,etc.)
· Ifitismalfunctioning(notonesounds.)
• Topreventareorelectricshock,neveropennor
remove the unit case as there are high voltage
components inside the unit. Refer all servicing to
qualiedservicepersonnel.
• Do not place cups, bowls, or other containers of
liquid or metallic objects on top of the unit. If they
accidentallyspillintotheunit,thismaycauseare
or electric shock.
• Donotinsertnordropmetallicobjectsorammable
materialsintheventilationslotsoftheunit'scover
asthismayresultinreorelectricshock.
• Theapparatusshallbeconnectedtoamainsocket
outlet with a protective earthing connection.
• The socket-outlet shall be installed near the
equipment and the plug shall be easily accessible.
When Installing the Unit
• Never plug in nor remove the power supply plug
with wet hands, as doing so may cause electric
shock.
•When unplugging the power supply cord, be sure
to grasp the power supply plug; never pull on the
cord itself. Operating the unit with a damaged power
supplycordmaycauseareorelectricshock.
2. SAFETY PRECAUTIONS
• Beforeinstallationoruse,be suretocarefullyreadalltheinstructionsinthissectionfor correctandsafe
operation.
• Besuretofollowalltheprecautionaryinstructionsinthissection,whichcontainimportantwarningsand/or
cautions regarding safety.
• Afterreading,keepthismanualhandyforfuturereference.
Safety Symbol and Message Conventions
Safety symbols and messages described below are used in this manual to prevent bodily injury and property
damage which could result from mishandling. Before operating your product, read this manual rst and
understandthesafetysymbolsandmessagessoyouarethoroughlyawareofthepotentialsafetyhazards.
Indicatesapotentiallyhazardoussituationwhich,ifmishandled,could
result in death or serious personal injury.
Indicatesapotentiallyhazardoussituationwhich,ifmishandled,could
resultinmoderateorminorpersonalinjury,and/orpropertydamage.
WARNING
CAUTION
WARNING
CAUTION

5
• Whenmovingtheunit,besuretoremoveitspower
supply cord from the wall outlet. Moving the unit
with the power cord connected to the outlet may
causedamagetothepowercord,resultinginreor
electric shock. When removing the power cord, be
sure to hold its plug to pull.
• Donotblocktheventsontheunit’sfrontandrear
panels. Doing so may cause heat to build up inside
the unit and result in re. Also, periodically clean
the ventilation slots of dust.
• Avoidinstallingtheunitinhumidordustylocations,
in locations exposed to the direct sunlight, near the
heaters, or in locations generating sooty smoke
or steam as doing otherwise may result in re or
electric shock.
• Besuretofollowtheinstructionsbelowwhenrack-
mountingtheunit.Failuretodosomaycauseare
or personal injury.
· Installtheequipmentrackonastable,hardoor.
Fix it with anchor bolts or take other arrangements
to prevent it from falling down.
· Whenconnectingtheunit'spowercordtoanAC
outlet, use the AC outlet with current capacity
allowable to the unit.
(EveryversionexcepttheDP-SP3CUforUS)
· The supplied rack-mounting screws can be used
for the TOA equipment rack only. Do not use them
for other racks.
(DP-SP3CUforUS)
· Rack-mounting screws are not supplied with the
unit. Prepare them that are appropriate for the
equipment rack.
· Be sure to complete installation and cable
connections before connecting the unit’s power
plug to the power source. When uninstalling the
unit or disconnecting the unit’s cables, be sure to
disconnect the power plug from the power source
rst.Doingotherwisemayresultinelectricshock.
• LANConnectorcannotconnecttoConnectorwhich
might catch overvoltage.
When the Unit is in Use
• If dust accumulates on the power supply plug or
in the wall AC outlet, a re may result. Clean it
periodically. In addition, insert the plug in the wall
outlet securely.
• Switchoffthepower,andunplugthepowersupply
plug from the AC outlet for safety purposes when
cleaning or leaving the unit unused for 10 days or
more.Doingotherwisemaycauseareorelectric
shock.
Thelightingash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sufcient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operationandmaintenance(servicing)instructionintheliteratureaccompanyingthe
appliance.

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5. HANDLING PRECAUTIONS
• Thesocket-outletshallbeinstalledneartheequipmentandtheplugshallbeeasilyaccessible.
• Thesuppliedpowersupplycordisdesignedforexclusiveusewiththisunit.Neveruseitwithotherequipment.
• Installtheunitinlocationswherethetemperatureisbetween0and+40°C(32and104°F)andthemoisture
islessthan90%(nodewcondensationmustbeformed).
• The DP-SP3 is a precision audio component. To prevent failure, avoid locations where the unit may be
exposed to strong shocks or vibrations.
• Toclean,besuretorstswitchofftheunit'spower,thenwipewithadrycloth.Whentheunitgetsverydirty,
useaclothdampedinaneutralcleanser.Neverusebenzene,thinner,alcohol,orchemically-treatedcleaning
cloth because such volatile liquids could deform or discolor the unit.
3. GENERAL DESCRIPTION
The DP-SP3 is a digital speaker processor equipped with signal processing functions such as Equalizer,
Crossover, Matrix, Compressor, and Delay.
WhenconnectedtoaLAN,settingsandoperationsoftheDP-SP3canbeperformedonaPCwiththesupplied
DP-SP3 PC Software installed.
Itcanbemountedina19”EIAcomponentrack(1Usize*).
*1Usize=44.5mm(standardsize)
4. FEATURES
• Digitalprocessorwith2inputchannelsand6outputchannels
• EquippedwithanEQcharacteristiclibraryfortheTOAspeakers
• Equippedwithvarioussignalprocessingfunctions:Equalizer,Crossover,Matrix,Compressor,Delay,Mute,
and Gain
• InputsensitivityswitchablesincetheanalogcircuithasanInputPAD.
• Built-inanalogoutputattenuatorpermitsthesystemgaintobeadjustedsuitablyfortheinputsensitivityofthe
ampliertobeconnected.
• Leveldisplayofallinputsandoutputs
• 16 patterns of setting parameters storable within the DP-SP3 unit as Preset memories (Preset memory
function)
• Useofcontactinputterminalsenablespresetmemoryrecall,volumecontrolofoutputchannels,andMute
ON / OFF.

7
123 4 5 6 7 8
6. NOMENCLATURE AND FUNCTIONS
[Front]
1. Power switch [POWER ON, OFF]
Power is switched on and off with each depression
of this switch.
2. Power indicator [POWER]
Lightswhenthepowerisswitchedon.
3. Intake vent
Letsintheairfromthefrontandforciblyexhausts
it from the rear.
4. Operation status indicators [STATUS]
• RUNindicator[RUN]
IndicatestheDP-SP3'soperationstatus.
Lightsgreen: Normaloperation
Flashesgreen: Muteswitchesinlockmode
Flashesorange:Fanfailure
Flashesred: DSPoperationfailure
Unlit: CPUfailure
• LINKindicator[LINK]
Indicates the connection status with the DP-SP3
PC Software.
Lightsgreen: Preset memory recall being
interlocked.
Flashesgreen: Communicating with PC or
external device.
Unlit: Noconnectionisestablished.
5. Preset indicators [PRESET]
The indicator of the Preset No. currently being
selected lights.
6. Input level indicators [INPUTS]
Indicate the audio input levels.
NotethattheinputlevelistoohighwhenthePEAK
indicator always lights.
7. Output level indicators [OUTPUTS]
Indicate the audio output levels.
Note that the output level is too high when the
PEAKindicatoralwayslights.
Adjust the DP-SP3 unit's volume level by the PC
with the DP-SP3 PC Software installed.
8. Mute switches [MUTE, 1 through 6]
Pressing the Mute switch causes the corresponding
channel's outputtobemutedandthe"−40"level
LED of the Output level indicators (7) ashes
orange.
Pressing it again cancels mute, and the indicator
goes off.
All mute switches can be placed in lock mode
using the supplied DP-SP3 PC software. Pressing
any mute switch in lock mode causes the RUN
indicator(4)toashgreen.

8
[Rear]
9 11 12 13 14 1510
9. AC power input terminal
Connect this terminal to an AC power source with
the supplied dedicated AC power cord.
10. Functional ground terminal
Hum noise may be generated when external
equipment is connected to the unit. Connecting
this terminal to the functional ground terminal
of the external equipment may reduce the hum
noise.
Note: This ground is not for protective ground.
11. Exhaust vent
Forcibly exhausts the air let in from the front.
12.Outputterminals[OUTPUTS+4dBu,1−6]
+4 dB*, 600 Ω, balanced, removable terminal
block
13.Inputterminals[INPUTS+4dBu,1−2]
+4 dB*, 600 Ω, balanced, removable terminal
block
14. Contact input terminals
 [CONTACTINPUTS1−4,C]
Removable terminal block, 4-channel contact
input terminal
*0dB=0.775V
Following controls can be performed using these
terminals.
• Presetmemoryrecall
• MuteON/OFF
• Volumecontrol(UP/DOWN)
For the control method, see p. 14, “CONTROL
METHOD USING THE CONTACT INPUT
TERMINALS.”
Tip
UsethesuppliedDP-SP3PCSoftwaretoassign
control functions to the terminals.
15. LAN port
ConnectthisporttotheLAN-connectedswitching
hubwithaLANcable.
• LINKindicator
Lightswhenthelinkisestablishedandduring
data transmission or reception.
• FULLindicator
LightsduringFullduplexoperation.
The DP-SP3’s default IP address is
“192.168.14.1”.
Use the supplied DP-SP3 PC Software to
perform IP address setting.

9
7. SYSTEM CONFIGURATION EXAMPLE
7.1. Control by the External Control Device
The following 2 methods are used to control the DP-SP3 from the external control device.
Functions to be controlled differ depending on each method.
7.1.1. Method of direct control
This example shows a method to control the DP-SP3 by directly connecting the external device’s contact
outputs to the DP-SP3 unit’s contact inputs.
Controllablefunctions:Presetmemoryrecall,Volumecontrol,andMuteON/OFF
[Controlling a single DP-SP3]
Contact output device
DP-SP3
Contact output device
Switching hub
DP-SP3
Contact output device
DP-SP3
External control device
Switching hub
DP-SP3
External control device
Switching hub
DP-SP3
External control device
DP-SP3
[Controlling multiple DP-SP3 units (up to 4 units)]
Inthisevent,controlbecomesactiveonlytotheDP-SP3towhichthecontactoutputisconnected.Butthe
Preset memory recall function is interlocked among the DP-SP3 units.
7.1.2. Method of control via LAN
ThisexampleshowsamethodtocontroltheDP-SP3bytheexternalcontroldevicesviaLAN.
External control DP-SP3:Presetmemoryrecall,Volumecontrol,Matrixsettings,andMuteON/OFF
DP-SP3 Externalcontrol:Presetmemorynumber,Volumecontrol,Matrix,andChannelmutenotication
[Controlling a single DP-SP3]
[Controlling multiple DP-SP3 units (up to 4 units)]
Inthisevent,controlbecomesactiveonlytothecontroltargetDP-SP3.ButthePresetmemoryrecallfunction
is interlocked among the DP-SP3 units.
Other controllable functions are the same as described above.

10
Switching hub
DP-SP3M-864D
Switching hub
DP-SP3
DP-SP3
M-864D
PC Switching hub
DP-SP3
7.2. Control by the M-864D Digital Mixer
The M-864D can control up to 4 DP-SP3 units.
[Controlling a single DP-SP3]
M-864D DP-SP3:Presetmemoryrecall
DP-SP3 M-864D:Presetmemorynumberchangerequest
[Controlling multiple DP-SP3 units (up to 3 units)]
M-864D DP-SP3:Presetmemoryrecall
DP-SP3 M-864D:Presetmemorynumberchangerequest
7.3. Control by a PC
A single PC can control up to 4 DP-SP3 units.
[Controlling a single DP-SP3]
PC DP-SP3:Presetmemoryrecall/save,Onlineedit,andMuteON/OFF
DP-SP3 PC:PresetmemorynumberchangerequestandVolumeleveldisplay

11
PC
Switching hub
DP-SP3
DP-SP3
PC
Switching hub
DP-SP3
DP-SP3
DP-SP3
DP-SP3
DP-SP3
DP-SP3
Switching hub
Contact output device
Contact output device
DP-SP3
DP-SP3
PC
M-864D
External control device
External control device
[Controlling multiple DP-SP3 units (up to 4 units)]
[Controlling 5 or more DP-SP3 units]
It is possible to control DP-SP3 units by activating multiple DP-SP3 PC Software programs.
7.4. Control by Various Types of Devices
This example showsa methodto controlmultipleDP-SP3units (upto4units)bya PC,thecontactoutput
devices, the external control devices, and the M-864D.

12
OFF
ON
0.5 sec 0.5 sec
OFF
ON
0.9 sec
0.2 sec 0.2 sec 0.2 sec
"−40" output level indicators
Mute switches
DP-SP3
8. MUTE FUNCTION OPERATION
The DP-SP3 can perform Mute function operation.
Usethisfunctionwhenwishingtomuteeachoutput.
UsetheDP-SP3unitorthesuppliedDP-SP3PCSoftwaretoperformmuteoperation.
The DP-SP3 can perform each individual output mute, while the DP-SP3 PC Software can perform both each
individualoutputmuteandsimultaneousmuteofalloutputs(MuteAll).
For the operations of the supplied DP-SP3 PC Software, read the separate DP-SP3 Software Instructions.
8.1. Mute Indicators
Fortheoutputchannelonwhichthemutefunctionisoperating,the“−40”levelindicatorofthecorresponding
outputchannellightsorange,ashes*1,orashesintermittently*2.
*10.5sec.ON 0.5 sec. OFF, then this cycle repeats.
*20.2sec.ON 0.2 sec. OFF 0.2sec.ON 0.9 sec. OFF, then this cycle repeats.
There is a priority order for the mute operating indications between the operation performed from the DP-
SP3 and that performed using the DP-SP3 PC Software. If multiple mute operations overlap, then the mute
operating indication with the higher priority is activated.
[Indication priority level of mute operation and indicator status]
Priority level
High
1.MuteAllusingtheDP-SP3PCSoftware: Intermittentlyashes(Flashestwice,thenrepeats.)
2.MuteandContactcontrolmutebytheDP-SP3: Flashes
3. An individual mute using the DP-SP3 PC Software
 andExternalcontrolmute: Lights
Low

13
Flashes
Mute All is activated using the Software.
Intermittently flashing
Outputs 1 and 2 are being muted by the DP-SP3.
Returns to the original display status.
Flashing Mute All is cancelled using the Software
Flashing
Mute is canceled
by the Software.
Flashing
or
Lights
8.2. Turning on the Mute Function by the DP-SP3
Step 1. Conrmthatthe“−40”levelindicatoroftheoutputchanneltobe
muted remains unlit.
Note
When an output channel’s indicator lights or intermittently
ashes,thisindicatesthattheoutputchannelisbeingmutedby
the DP-SP3 PC Software.
Step 2. Press the Mute switch of the corresponding channel, then release it when the “−40” output level
indicatorofthatchannelbeginstoash.
[Indicator status when the Mute operations overlap]
Example:WhenMuteisactivatedbytheDP-SP3followedbyMuteAllactivationusingtheDP-SP3PCSoftware.
8.3. Turning OFF the Mute Function by the DP-SP3
Step 1. Conrmthatthe“−40”levelindicatoroftheoutputchannelwishing tocancelthemuteoperationis
ashing.
Note
Muteoperationoftheoutputchannel,ofwhichlevelindicatorisintermittentlyashingorlighting,cannot
be cancelled by the DP-SP3.
Step 2. Press the Mute switch of the corresponding channel,
thenreleaseitwhen the “−40”levelindicatorofthat
channelstopsashing,thengoesoutorlights*.
*The indicator lights if the mute operation with lower priority indication
activated by the DP-SP3 PC Software overlap with the muting operated by
theDP-SP3.UsetheDP-SP3PCSoftwaretocancelthemute.

14
Lights
(While the Preset Memory 1 is being recalled)
DP-SP3
9. PRESET NUMBER INDICATION FUNCTION
UsingthesuppliedDP-SP3PCSoftware,varioussettingdatacanbestoredontheDP-SP3,whichcanbe
recalled.
The saved setting data is referred to as “Preset memory.”
The supplied DP-SP3 PC Software allows up to 16 patterns of the Preset memories to be stored or recalled.
For the store and recall methods, read the separate DP-SP3 Software Instructions.
While one of the Preset memories 1 through 4 is being
recalled, its corresponding numbered Preset indicator of
the DP-SP3 lights.
Tip
When all 4 Preset indicators are unlit, the DP-SP3 is
placed in one of the following statuses.
•Presetmemories5through16arebeingrecalled.
•TheDP-SP3isactivatinginResumefunctionONstate.
•Setting is changed after activating the DP-SP3.
Detects the
leading edge.
Max. 50 ms
200 ms
Preset memory
switches.
Detects the
leading edge.
Max. 50 ms
200 ms
Preset memory
switches.
10. CONTROL METHOD USING THE CONTACT INPUT TERMINALS
This chapter will describe control method of the contact input terminals to recall the Preset memory, adjust the
volumelevelofoutputchannels,andcontroltheMuteON/OFFbyexternalequipment.
Note: For the settings of each individual function, read the separate DP-SP3 Software Instructions.
10.1. Preset Memory Recall
Upto4PresetmemoriesinDirectmodeandupto16PresetmemoriesinBinarymodecanbecontrolled.
[Direct mode]
Either(A)or(B)belowcanbeusedforthecontrolmethod.
In either case, Preset memory switches 250 ms or more after the contact inputs have been closed.
(A) Maintainingthecontactterminalclosedafter
the Preset memory has been switched.
(B) OpeningthecontactterminalafterthePreset
memory has been switched.
Tip
UsetheDP-SP3PCSoftwaretoassignwhichterminals1through4towhichPresetmemory.
Read the separate DP-SP3 Software instructions.

15
Note: Binary control example by way of the 3P terminal
Detects the
leading edge.
Max 50 ms
200 ms
Undefined
Detects the
trailing edge.
Max 50 ms
200 ms
Undefined
Detects the
leading edge.
Max 50 ms
200 ms
Preset memory
switches.
Terminal 1
Terminal 2
Terminal 3
[Binary mode]
The following tables show the relationship between the
statuses to be given to the terminals and Preset memories
to be recalled.
Selecting 2 Preset memories using the terminal 4
Preset memory number Terminal 4
1Open
2Closed
Selecting 4 Preset memories using the terminals 3 and 4
Preset memory number Terminal 3 Terminal 4
1Open Open
2Open Closed
3Closed Open
4Closed Closed
Selecting 8 Preset memories using the terminals 2, 3, and 4
Preset memory number Terminal 2 Terminal 3 Terminal 4
1Open Open Open
2Open Open Closed
3Open Closed Open
4Open Closed Closed
5Closed Open Open
6Closed Open Closed
7Closed Closed Open
8Closed Closed Closed
Selecting 16 Preset memories using the terminals 1, 2, 3, and 4
Preset memory number Terminal 1 Terminal 2 Terminal 3 Terminal 4
1Open Open Open Open
2Open Open Open Closed
3Open Open Closed Open
4Open Open Closed Closed
5Open Closed Open Open
6Open Closed Open Closed
7Open Closed Closed Open
8Open Closed Closed Closed
9Closed Open Open Open
10 Closed Open Open Closed
11 Closed Open Closed Open
12 Closed Open Closed Closed
13 Closed Closed Open Open
14 Closed Closed Open Closed
15 Closed Closed Closed Open
16 Closed Closed Closed Closed
To switch the Preset memory, maintain the given state for 250 ms or more after placing each terminal in the
state corresponding to the Preset memory to be recalled.
Maintain the terminal state as it is until changing the Preset memory next time.

16
Detects the
leading edge.
Max. 50 ms
200 ms
First volume
control
First
volume control
800 ms 800 ms 800 ms
Second
volume control
Third
volume control
Fourth through seventh
volume control
Repeats subsequently.
200 ms for 3 times
Detects the
trailing edge.
Max. 50 ms
200 ms
Mute OFFDetects the
leading edge.
Max. 50 ms
200 ms
Mute ON
Detects the
leading edge.
Max. 50 ms
200 ms
Mute ON/OFF
10.2. Output Volume Control
• Closingtheterminalsfor250msormorecausesanactiontooperateby1step*.
*Selectthevariationfrom“1dBstep,”“3dBstep,”or“6dB
step” using the DP-SP3 PC Software.
• Maintainingtheterminalsclosedfor250msormorecausesa1-stepactiontorepeatevery800msfor3
times, followed by 1-step action repeating every 200 ms. Opening the terminals stops these continuous
actions.
Tip
UsetheDP-SP3PCSoftwaretoassignthefunctiontoterminals.
Read the separate DP-SP3 Software instructions.
10.3. Output Mute
Thereare2controlmethodstomuteoutput:ClosedcontrolandPulsecontrol.
UsetheDP-SP3PCSoftwaretoselectcontrolmethod.
[Closed control]
Closingtheterminalsfor250msormorecausesMutetoturnON.
While, opening the terminals for 250 ms or more causes Mute to turn OFF.
[Pulse control]
Closingtheterminalsfor250msormorecausesMutetoturnON.
Mute turns OFF 250 ms or more after opening once and closing again the terminals.
MuteswitchesbetweenONandOFFeachtimeopenandclosedstatesarealternatelyrepeated.

17
4
A CB
Ver. 2.1.
(Example)
Indicates "A." Indicates "B." Indicates "C."
1
2
3
4
9
5
6
7
8
5
6
7
8
8
5
6
7
8
1
2
3
4
9
9
2 3 4
1
DP-SP3
Indicates "A." Indicates "B." Indicates "C."
Lights
Lights
Lights
11. FIRMWARE VERSION INDICATION
TheDP-SP3’srmwareversioncanbeconrmedbycheckingthelightingindicatorstatusontheDP-SP3’s
front panel.
• FirmwareVersionIndication
 TheDP-SP3’srmwareversionisexpressedasshowninthefollowingexample.
 Here,theindividualnumbersaredenotedbyA,B,andC.
• Howtocheckrmwareversion
 WhentheDP-SP3isactivated,theindicatorsonthefrontpanellightfor3seconds,indicatingthegureof“A,”
“B,”and“C.”
 Thegurethateachindicatorindicatesisasfollows.
Note: Ifalltheindicatorsin“B”and“C”sectionsareunlit,itrepresents“0.”
In the above example of “Ver. 1.2.4”, the indicators of each section light as follows.

18
12. INITIALIZING THE DP-SP3
Step 1. Turn off the power switch.
Step 2. Turn on the power switch while continuously holding down the Mute switches 1, 2, and 5.
All the front panel-mounted indicators light, then those except Input and Output level indicators go off.
Step 3. When only the Input and Output level indicators light, release the Mute switches, then these indicators
turnintoashing.
Step 4. WhiletheInputandOutputlevelindicatorsareashing,presstheMuteswitch3threetimes.
Allthefrontpanel-mountedindicatorsgooff,andtheinitializationprocessstarts.
TheDP-SP3restartsafterinitializationiscomplete.
Input level indicators
1, 2
2, 3
4
Mute switches
Output level indicators Power switch

19
• Elevated Operating Ambient - If installed in a closed or multi-unit rack assembly, the operating ambient
temperature of the rack environment may be greater than room ambient. Therefore, consideration should be
giventoinstallingtheequipmentinanenvironmentcompatiblewiththemaximumambienttemperature(Tma)
speciedbythemanufacturer.
• ReducedAirFlow-Installationoftheequipmentinarackshouldbesuchthattheamountofairowrequired
for safe operation of the equipment is not compromised.
• MechanicalLoading-Mountingoftheequipmentintherackshouldbesuchthatahazardousconditionisnot
achieved due to uneven mechanical loading.
• Circuit Overloading - Consideration should be given to the connection of the equipment to the supply
circuit and the effect that overloading of the circuits might have on overcurrent protection and supply wiring.
Appropriate consideration of equipment nameplate ratings should be used when addressing this concern.
• ReliableEarthing-Reliableearthingofrack-mountedequipmentshouldbemaintained.Particularattention
shouldbegiventosupplyconnectionsotherthandirectconnectionstothebranchcircuit(e.g.useofpower
strips)."
Power amplifier
Rack
DP-SP3
Blank panel
13. INSTALLATION
13.1. Installation Precautions
Besuretoleavetheinstallationwork(rackmounting)toa
qualiedinstaller.
When installing the unit in an equipment rack, do not
block the ventilation slots on the unit’s both sides and
rear side. Doing so may cause heat to build up inside
theunitandresultinre.
CAUTION
• Températureambianteélevée-sil’appareilestinstallédansunbâtiferméouenmêmetempsqued’autres
appareils,latempératureàl’intérieurrisquededevenirsupérieureàlatempératureambiante.Parconséquent,
veiller à installer l’équipement dans un environnement compatible à la température ambiante maximum
spéciéeparlefabricant.
• Débitd’airréduit-L’installationdel’équipementenbâtinedoitpascompromettreledébitd’airnécessaireà
uneutilisationsûredel’équipement.
• Chargemécanique-Lemontagedel’équipementenbâtinedoitpasentraînerdedangerdûàunesurcharge
mécaniqueinégale.
• Surcharge du circuit - rester vigilant lors de la connexion de l’équipement au circuit d’alimentation et
aux conséquences d’une surcharge des circuits sur la protection contre les surintensités et les câbles
d’alimentation.
Tenir compte des indications de la plaque nominale de l’appareil.
• Sécurité de la mise à la terre. Veiller à toujours garantir l’intégrité de la prise de mise à la terre. Faire
particulièrement attention aux connexions d’alimentation en dehors des branchements directs au circuit de
dérivation(parexempleàl’aidedemultiprises).

20
DP-SP3
To LAN
To the output terminals of
contact output devices
M-864D
Power amplifier
Spearker
Subwoofer
Spearker
Subwoofer
14. CONNECTION
14.1. Connection Example
13.2. Mounting in a Rack
(Whenrackmountingscrewsaresupplied)
The supplied rack-mounting screws can be used for
the TOA equipment rack only. Do not use them for
other racks.
When installing the unit in a rack other than that of
TOA, be sure to use the screws with a diameter of
over5mm(0.2”)andlengthofover12mm(0.47”)to
mount the unit.
Failure to do so may cause the unit to fall, resulting in
personal injury.
(Whenrackmountingscrewsarenotsupplied)
Rack mounting screws are not supplied with the unit.
Besuretousethescrewswithadiameterofover5
mm(0.2”)andlengthofover12mm(0.47”)tomount
the unit.
Failure to do so may cause the unit to fall, resulting in
personal injury.
CAUTION
DIGITAL
SPEAKER
PROCESSOR
DP-SP3
PRESET
STATUS
1
RUN LINK
4
3
2
INPUTS
PEAK
+12
12
0
–
40
OUTPUTS
PEAK
POWER
ON
OFF
+12
0
123456
MUTE
–
40