Soulution 720 PRE User Manual

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Preamplifier

Preamplifier 720

Preamplifier Preamplifier

User manual

User manualUser manual

720

720720

soulution

nature of sound

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Preamplifier

Preamplifier 720

PreamplifierPreamplifier

User Manual

Dear client

Dear clientDear client

We are proud that you decided yourself for a soulution preamplifier. You have acquired a preamplifier with outstanding sonic performance which you will enjoy for many years.

We understand your eagerness to get started but even though please study this manual step by step before you integrate the preamplifier 720 in your High Fidelity system. This manual contains also useful tips for the optimisation of your overall HiFi-system.

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If there are any questions regarding the start-up or operation of your preamplifier 720 please do not hesitate to contact your dealer.

Have fun!

Have fun!Have fun!

Your soulution team

Your soulution teamYour soulution team

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CE----Declaration of Conformity

Declaration of Conformity

CECE

Declaration of ConformityDeclaration of Conformity

Spemot AG declares that this product is in conformance with the following directives and standards:

Low Voltage Directive 2006/95/EG (EN/IEC 60065:2002)

Electromagnetic Compatibility 2004/108/EG (EN 55013:2001, EN 55020:2002, EN 61000-3-2:2006, EN61000-3-3:1995)

FCC

FCC----Notice

Notice

FCCFCC

NoticeNotice

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

adjust or relocate the receiving antenna

increase the separation between the equipment and the receiver

connect the equipment into a mains outlet on a circuit different from that to which the receiver is connected

consult the dealer or an experienced radio/TV technician for help

Disposal

DisposalDisposal

According to the Directive 2002/96/EG of the European Parliament used consumer-electro technical appliances have to be disposed separately and have to be indicated with the following symbol.

In the case of disposal of this component please do so in conformity with legal and environmental regulations.

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Preamplifier User Manual

Table of contents

Table of contentsTable of contents

3.1

3.2

3.3

3.4

3.5

3.6

3.7

3.8

4.1

4.2

4.3

4.4

Quick start.......................................................................................... 5

Important security advices: ..................................................................6

Technical Highlights............................................................................ 8

Layout ................................................................................................ 8

Volume control....................................................................................8

Phono-Stage (moving coil) ................................................................... 8

Output stage ....................................................................................... 9

Power supply ...................................................................................... 9

Gain-adjustment ...............................................................................10

DC-PROTECT .................................................................................... 10

Bandwidth limitation ......................................................................... 10

Start of operation and handling of the preamplifier 720 .......................11

Scope of delivery and packing ............................................................ 11

Optimal positioning of your preamplifier 720 ...................................... 11

Rear panel of the preamplifier 720 ..................................................... 12

Front panel of the preamplifier 720 .................................................... 16

Preamplifier 720

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5.1

5.2

6.1

6.2

8.1

9.1

9.2

9.3

Programming of the preamplifier 720 ................................................. 22

Overview........................................................................................... 22

Program-Functions ............................................................................23

Remote control ................................................................................. 33

Start of operation and maintenance .................................................... 33

Handling .......................................................................................... 33

Protection functions of the preamplifier 720 .......................................37

Trouble shooting ............................................................................... 38

Actions after the appearance of an error.............................................. 38

Care and maintenance ....................................................................... 39

Burn-in............................................................................................. 39

Longlife-precautions ..........................................................................39

Cleaning ...........................................................................................39

Service ............................................................................................. 40

Warranty........................................................................................... 40

Specifications ...................................................................................41

Dimensions....................................................................................... 42

Definitions........................................................................................ 43

Individual Settings ............................................................................ 44

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Preamplifier

0 and store the packing for future

has a top

system from

the mains supply. Connect your preamplifier 720 with your

. Use

system.

plifier 720 and all other components of

ply. Please use the enclosed

While manipulating with cables

the preamplifier 720 has to remain disconnected from the

Default values for all functions are programmed. No additional

We suggest programming of the

should be

720. Turn

720 to a minimal level.

fier

Preamplifier 720

PreamplifierPreamplifier

User Manual

720

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1111 Quick start

Quick start

Quick startQuick start

Unpacking

UnpackingUnpacking

Positioning

PositioningPositioning

Cabling

CablingCabling

Unpack the preamplifier 72 transportations.

Security advice: Your preamplifier 720 class surface. Please take care during installation.

Position the preamplifier 720 on a stable base.

Security advice: Cooling air must be able to circulate and escape unrestricted.

Disconnect all electrical appliances of your HiFi-

amplifier and signal sources (according to user manual) the respective signal cables and the cable for the LINKReconnect the pream your HiFi-system with mains sup high class mains cable for your preamplifier 720.

Programming

ProgrammingProgramming

Switch on

Switch onSwitch on

Security advice:

mains supply.

programming is required for the start-up of your preamplifier.

Security advice: functions Start-Volume and Max-Volume. If you use recording equipment the function Record-Loop programmed as well.

Switch on your source devices and the preamplifier down the volume of the preamplifier Switch on your amplifier.

Security advice: Before you switch on the ampli check whether the cabling is done correctly.

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2222 Important security advices

Important security advices::::

Important security advicesImportant security advices

User manual

User manual::::

User manualUser manual

Read this user manual carefully before you start-up your preamplifier 720 and follow all installation and security advices.

Please keep this user manual. In the case this manual gets lost you have the possibility to download it from the soulution-webpage.

(http://www.soulution-audio.com/downloads)

Mains supply

Mains supply ::::

Mains supplyMains supply

Exclusively use 3 phase power cords with ground conductor. They may not be crushed by objects.

Unplug your preamplifier 720 from the mains connection in the following cases:

before you manipulate with cables

before cleaning

during thunder storms or

before you leave for longer periods

Cabling

Cabling::::

CablingCabling

While manipulating with cables the preamplifier 720 has to remain disconnected from the mains. Before you disconnect the mains the preamplifier 720 has to be in operating condition OFF. Wrong cabling may cause damages to your preamplifier 720, your amplifier or to your loudspeakers. Excessive volumes due to inappropriate handling may cause hearing damages.

Transport:

Transport:Transport:

Use only with the cart, stand, tripod, bracket or table specified by the manufacturer or sold with the apparatus. When a cart is used, use caution when moving cart/apparatus combination to avoid injury or tip over.

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Packing:

Packing:Packing:

Please keep the original packing for future transports. The original packing is optimal protection against potential damages.

Operation:

Operation:Operation:

Never run your preamplifier 720

with opened housing

with closed cooling-slots

with high ambient temperatures (>40°C)

close to heat sources like radiators, heatings, ovens or similar appliances dissipating heat

with extremely high humidity for example in humid cellars or rooms similar humidity

close to water (Sink, bathtub, or similar equipment) or with any object containing water residing on top of the product

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Cleaning:

Cleaning:Cleaning:

Use a soft and dry towel. We suggest using a non abrasive micro fibre towel. Please do not use any solvents or liquidities.

Service:

Service:Service:

Do not try to repair your preamplifier 720 by yourself. It needs a service check by a qualified person in the following cases:

the mains-cable or the mains connectors are damaged

foreign substances or liquidity has entered the preamplifier 720

the preamplifier 720 has seen rain

the preamplifier 720 seems to malfunction

the preamplifier 720 has fallen to the floor or the housing is damaged

Seri

Serial

al----Nr.:

SeriSeri

Nr.: 720

alal

Nr.:Nr.:

720 ----

720 720

Please note the serial-number of your preamplifier 720 above.

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3333 Techni

3.1

3.1 Layout

3.13.1

Technical

TechniTechni

Layout

LayoutLayout

cal Highlights

calcal

Highlights

Highlights Highlights

The preamplifier 720 is realised as asymmetrical dual mono circuit. Left and right audio channels (incl. phono mc stage) each have identical circuit boards. Resulting in a channel separation of >105 dB, prerequisite for a three dimensional spatial reproduction.

The audio section is physically separated from the power supply units and the digital circuits. For minimal interference the different sections are shielded against each other.

3.2

3.2 Volume control

3.23.2

Volume control

Volume controlVolume control

Relays switched high precision metal foil resistors form an 80 steps (1 dB) volume control. Each channel has its own volume control resistor network.

The volume control allows also adjusting the balance. Depending on the balance setting the volume of the left or right channel is decreased.

In order to avoid unpleasant click-noise and harmful voltage peaks while changing the volume the preamplifier 720 disposes over an additional volume control path only active while actually changing the volume. This parallel volume control is realised with a Programmable Gain Amplifier (PGA) which is able to adjust the volume without any noise. As soon as the new volume level is set the signal path is switched to the high end resistor network.

3.3

3.3 Phono

3.33.3

Phono----SSSStag

PhonoPhono

The phono stage has a basic amplification of +54 dB or +60 dB (at 1 kHz). This can be defined with the function Phono-Gain. The phono amplifier works with an internal bandwidth of 1 MHz (-3 dB). This guarantees the most accurate reproduction of the RIAA - equalisation curve.

tage (moving coil)

e (moving coil)

tagtag

e (moving coil)e (moving coil)

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External phono modules ensure optimal impedance matching of your cartridge and

the phono amplifier. The enclosed modules adjust the impedance to 1kΩ and

100Ω. Modules with other impedances are available through your soulution dealer.

3.4

3.4 Output stage

3.43.4

Output stage

Output stageOutput stage

The output stage is optimised for velocity, precision and impulse current rating.

Thanks to its low output impedance of 2Ω and Class-A operation (40mA idle current) the output stage is stable on every load (also long cables are driven without problems).

The theoretical maximal current rating of 3 amperes is limited to 1 ampere. This is realised with a protection circuit outside the signal path.

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Due to the bandwidth of 1 MHz (-3 dB) - internally the output stage works up until frequencies of 40 MHz - all details of the music reproduced naturally. The spatial reproduction gets really three dimensional and holographic (optimal recording prerequisite). The power of the output stage ensures that all these details are truly transmitted to your amplifier. (Cable losses are minimised).

3.5

3.5 Power supply

3.53.5

Power supply

Power supplyPower supply

The preamplifier 720 has two separate power supply units, one for the supply of the audio section, another for the supply of the digital circuits. The stringent separation of the power supply units is amended with a multi stage filter network. Interference between digital and analogue circuits is thus minimised.

The supply voltages for the audio section are multi stabilised. We use an amplifier like circuit working into a capacitor. The ultra stable supply voltage has a loaddependant deviation of 500 microvolt and a residual ripple < 0,01 microvolt. The supply voltages are distributed on the audio circuit through solid copper (3x6.5

For minimal micro phonic interferences the power supply units are flex-mounted on rubber damping elements and therefore effectively decoupled from the housing.

The high quality supply voltages are made available for external components through the DC-OUT connection.

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3.6

3.6 Gain

3.63.6

3.7

3.7 DC

3.73.7

Gain----adjustment

adjustment

GainGain

adjustmentadjustment

Different signal sources typically have unequal output levels. For minimal volume differences while switching between inputs the preamplifier 720 allows adjusting the gain per input individually. This is implemented with an additional amplification stage adjustable for +3/+6/+9 dB and a level accuracy of 0.01 dB. This additional amplification is only active when really needed.

DC----PROTECT

PROTECT

DCDC

PROTECTPROTECT

The input signal is permanently monitored for DC-offsets. As soon as a DC-offset of > 15 mV is detected a high quality capacitor is switched into the signal path for optimal protection of the preamplifier soulution 720. The display shows the symbol for the capacitor (╪). If the DC-offset has disappeared for at least 15 seconds the ca-

pacitor is switched out of the signal path. This ensures optimal protection while simultaneously providing a capacitor free signal path (offset free signal prerequisite).

3.8

3.8 Bandwidth limitat

3.83.8

Bandwidth limitat ion

Bandwidth limitatBandwidth limitat

Another source for potential adulterations of the music is high frequency noise. High frequency noise may be coupled through connecting cables or is present in source equipment as artefacts of digital to analogue conversion. The bandwidth can be limited individually per input therefore providing optimal sound quality also for HF-noise affected input signals.

ion

ionion

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4444 Start of operation and handling of the preamplifier 720

Start of operation and handling of the preamplifier 720

Start of operation and handling of the preamplifier 720Start of operation and handling of the preamplifier 720

Please take care while installing the preamplifier 720. Follow all security advices!

4.1

4.1 Scope

4.14.1

Scope of delivery and packing

Scope Scope

of delivery and packing

of delivery and packingof delivery and packing

Please check the scope of delivery:

preamplifier 720

remote control 720/740 (incl. batteries 2xAAA)

phono-termination plug

phono-module 100Ω

phono-module 1kΩ

mains cable

user manual

cotton gloves

Please store the packing of the soulution 720 for future transports. Check your preamplifier 720 for transport damages. In the case your preamplifier 720 is damaged please contact your soulution dealer.

Security advice: If your preamplifier 720 is still very cold from the transport, please let it warm within the packing, in order to omit condensation of water inside your preamplifier 720.

4.2

4.2 Optimal positioning of your

4.24.2

Optimal positioning of your preamplifier

Optimal positioning of your Optimal positioning of your

There are no limitations on where to position your preamplifier 720. We suggest positioning it so that the connecting cables to the amplifier and the signal sources remain short.

Security advice: The preamplifier 720 has a high quality surface. Please be careful so that the surface does not get scratched. Please use the enclosed cotton gloves. Never position your preamplifier 720 on the front panel. The display glass could get scratched or even burst.

preamplifier 720

preamplifierpreamplifier

720

720 720

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4.3

4.3 Rear pan

4.34.3

Rear panel

Rear panRear pan

el of the preamplifier 720

elel

of the preamplifier 720

of the preamplifier 720 of the preamplifier 720

Rear panel of the preamplifier 720

4.3.1

4.3.1 Mains (A)

4.3.14.3.1

Mains (A)

Mains (A)Mains (A)

Connect the preamplifier 720 with the mains supply. The enclosed power cord is optimised for this application.

After switch-on the power supplies of the preamplifier get started. The display shows "WAIT". As soon as constant conditions for the power supplies are reached the preamplifier 720 changes to operating condition OFF (red LEDs in display).

Display after switch in of the mains Display in operating condition OFF

Security advice: Only switch-off the mains connection if your preamplifier is in operating condition OFF.

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4.3.2

4.3.2 Symmetrical inputs

4.3.24.3.2

Symmetrical inputs IN 1/IN 2 (B)

Symmetrical inputsSymmetrical inputs

IN 1/IN 2 (B)

IN 1/IN 2 (B) IN 1/IN 2 (B)

Your preamplifier 720 has two symmetrical inputs IN 1/IN 2. Connect your high quality source equipment with symmetrical cables to the preamplifier 720.

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Security advice:

4.3.3

4.3.3 Phono

4.3.34.3.3

Phono----stage

PhonoPhono

The asymmetrical input IN 3 is reserved exclusively for phono (MC). Connect your analogue turntable with asymmetrical connectors to the preamplifier 720. Please connect only moving coil (MC) systems.

External phono modules ensure optimal impedance matching of your cartridge and

the phono amplifier. The enclosed modules adjust the impedance to 1kΩ and

100Ω. Modules with other impedances are available through your soulution dealer.

The phono stage has a basic amplification of +54 dB or +60 dB (at 1 kHz). This can be defined with the Program-Function Phono-Gain (chapter 5.2.11, page 29). The phono amplifier works with an internal bandwidth of 1 MHz (-3 dB). This guarantees the most accurate reproduction of the RIAA - equalisation curve.

If required the subsonic filter RIAA-IEC can be activated.

stage IN

IN 3 (C)

stagestage

IN IN

please follow the security advices on page 6 !

3 (C)

3 (C) 3 (C)

In case you do not use your phono stage we recommend to terminate the input IN 3 with enclosed phono-termination plugs. This prevents from accidentally connecting a line source apparatus.

Security advice: Please follow the security advices on page 6 !

Never connect a line source to the input IN 3. The phono stage is not protected against over voltages (for sonic reasons) and would be destroyed.

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4.3.4

4.3.4 Asymmetrical inputs

4.3.44.3.4

Asymmetrical inputs IN 4...IN 6 (D)

Asymmetrical inputs Asymmetrical inputs

Your preamplifier 720 has three asymmetrical inputs IN 4...IN 6. Connect your signal sources with asymmetrical cables with the preamplifier 720.

IN 4...IN 6 (D)

IN 4...IN 6 (D)IN 4...IN 6 (D)

Security advice:

4.3.5

4.3.5 Record

4.3.54.3.5

Record----Out (E)

RecordRecord

Connect the inputs of your recording device with the Record-Out terminals of the preamplifier 720 (asymmetrical cables).

The selected Record-In signal is directed to the Record-Out terminals through a separate signal path. Volume-, Balance- or Gain-settings do not affect the signal at the Record-Out terminals. For level adjustments please use the respective control functions of your recording device.

The signal present at the Record-Out terminals is buffered and has an output im-

pedance of 100Ω. Therefore cable losses are minimised and top quality music signal is available for recording.

Security advice: Please follow the security advices on page 6 !

If you connect a recording device you should define the function Record-Loop. Thus you omit eventually harmful feedback loops.

Out (E)

Out (E)Out (E)

please follow the security advices on page 6 !

4.3.6

4.3.6 Main

4.3.64.3.6

Main----Out (F)

MainMain

The preamplifier 720 provides symmetrical as well as asymmetrical output terminals (Main-Out). Connect your amplifier to the preamplifier 720 with your preferred cables. Due to the exceptional load stability there are no restrictions regarding the selection of your connecting cables.

We recommend using symmetrical cables. For short cable lengths also asymmetrical cables represent a high quality connection, top quality cable and optimal layout prerequisite. The level difference between the symmetrical and asymmetrical output accounts for 6 dB.

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Out (F)

Out (F)Out (F)

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The symmetrical output (Main-Out) additionally offers the ground lift function. The ground-lift switch cuts off the ground connection between the audio circuit and the symmetrical output terminal. This offers the possibility to suppress a potential humm-loop between your preamplifier 720 and power amplifier. (Ground-Lift 1 = ground connected, Ground-Lift 0 = ground disconnected). The housing remains grounded independent of the ground-lift switch.

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Security advice:

4.3.7

4.3.7 LINK

4.3.74.3.7

LINK (G)

LINKLINK

The preamplifier 720 controls the start-up sequence of connected soulution components through the LINK connection (Master-Slave-principle; the preamplifier 720 is always the Master). Connect the Master Out 1 or Master Out 2 terminal of your preamplifier 720 with the other soulution components. Each soulution component has Next-Slave output to connect further soulution appliances.

4.3.8

4.3.8 DC

4.3.84.3.8

DC----Out (H)

DCDC

The ultra stable power supply of the preamplifier 720 is available for external soulution components (e.g. external phono preamplifier, external DAC, etc.) through the DC-OUT connector.

(G)

(G) (G)

Out (H)

Out (H)Out (H)

Please follow the security advices on page 6!

Security advice: Never remove the security cover while your preamplifier is in operation. Always switch off your preamplifier 720 before you connect an external device.

4.3.9

4.3.9 RS232

4.3.94.3.9

RS232 –––– Interface

RS232 RS232

The preamplifier 720 can be remote controlled through the RS232 interface. All functions can be controlled and relevant information is provided to the controll unit.

Interface (I)

Interface Interface

(I)

(I) (I)

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4.3.10

4.3.10 Type label (

4.3.104.3.10

4.4

4.4 Front panel of the preamplifier

4.44.4

Type label ( JJJJ))))

Type label (Type label (

Please note the serial number of your preamplifier 720 on page 7 of this user manual. This allows you to have the product specific data at hand without removing your preamplifier 720 from the HiFi rack.

Front panel of the preamplifier 720

Front panel of the preamplifier Front panel of the preamplifier

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Front panel of the preamplifier 720

4.4.1

4.4.1 Power (K)

4.4.14.4.1

Power (K)

Power (K)Power (K)

With the Power-button you define the operating condition ON or OFF (red LEDs). In operating condition OFF the audio circuits are completely disconnected from the output terminal (Main-Out). The Main-Out terminals are only activated if the preamplifier 720 is ready for operation and if no errors are present.

Display in operating condition OFF Display in operating condition

We suggest bringing your preamplifier 720 in operating condition OFF while you are not listening to music. Your preamplifier 720 may be switched on with the IRremote control (Power consumption in operating condition OFF <0.5 W).

PROTECT ON

Display in operating condition ON

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LINK-System:

In case you have connected other soulution components to the preamplifier 720 with the LINK-System it remains in operating condition PROTECT ON until all connected components are switched on (Display LINK Connect).

If no errors have occurred while switching-on the other components the preamplifier 720 changes into operating condition ON.

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Display in operating condition OFF Display after switch on of LINK

components

Display in operating condition ON, DC-protection active

When the preamplifier 720 is switched off all connected LINK components are switched off simultaneously (operating condition OFF).

Display after switch off of LINKcomponents

Display in operating condition OFF

If an error occurs within a LINK-component while operating the display shows LINK ERROR.

Display for an error within a LINKcomponent

Security advice: Please follow the security advices on page 6!

Unplug your preamplifier 720 from the mains before you manipulate with cables, before cleaning, during thunder storms or before you leave for longer periods. Before you switch off the mains bring your preamplifier 720 in operating condition OFF.

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4.4.2

4.4.2 Mute (L)

4.4.24.4.2

Mute (L)

Mute (L)Mute (L)

Mute is a security function which allows you disconnecting all inputs from the outputs in case of an urgency (wrong cabling, feedback loops, etc.). Mute cuts off the symmetrical as well as the asymmetrical outputs and the record out (Display MUTE).

For reducing the volume to a predefined level please use the function Volume-Dim.

Display in operating condition MUTE

4.4.3

4.4.3 Prog (M)

4.4.34.4.3

Prog (M)

Prog (M)Prog (M)

The Prog-button switches the preamplifier 720 between Operating-Mode and Programming-Mode. In the Programming-Mode you may adjust the preamplifier 720 to your individual requirements.

4.4.4

4.4.4 Volume (N)

4.4.44.4.4

Volume (N)

Volume (N)Volume (N)

The Volume-knob controls the functions Volume +/- and Volume-Dim.

4.4.4.1

4.4.4.1 Volume +/

4.4.4.14.4.4.1

Volume +/----

Volume +/Volume +/

Seite 18

The preamplifier 720 disposes over a volume control range of 80 dB. The volume is adjustable in 1 dB steps.

Display: 0 = no signal (mute)

1 = lowest level (attenuation by –79dB) 80 = maximal level (no attenuation)

Turning the Volume-knob clock wise increases the volume turning counter clock wise decreases the volume. In order to omit too high volumes we suggest limiting the volume individually with the function Volume-Max. When you reach the maximal

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level the display shows for example M 60. The volume can not be further increased by turning the volume knob.

4.4.4.2

4.4.4.2 Volume

4.4.4.24.4.4.2

Volume----Dim

VolumeVolume

Dim

DimDim

By pushing the Volume-knob the volume is reduced to the predefined level VolumeDim (Display for example „D 10“). By pushing the Volume-knob again the volume is increased to the original level.

As long as the Volume-Dim function is active the volume can not be altered by the Volume-knob. The volume can only be changed after the Volume-Dim function has been deactivated.

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Display with active Volume-Dim function

4.4.5

4.4.5 Input (O)

4.4.54.4.5

Input (O)

Input (O)Input (O)

The Input-knob controls the functions Input-Select, Record-Select and is used for the Programming.

4.4.5.1

4.4.5.1 Input

4.4.5.14.4.5.1

Input ----Select

Select

InputInput

SelectSelect

By turning the Input-knob you define which input of the preamplifier shall be connected. The display shows the input you want to select (for example SACD IN 4). The current input remains active until the new input has been selected and the Input-knob was not turned for ca. 3 sec.

All other inputs remain completely disconnected from the preamplifier 720. Signal and ground are (dis)connected by top class relays. Hum noise originating from eventual equalising currents between connected audio components is thus effectively eliminated. Additionally cross-talk from inactive inputs to the active input is suppressed!

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Display while selecting a new input Display after the new input is

For security reasons the DC-protection function is activated during the switch over to the new input. If there is no DC-offset the coupling capacitor is bypassed after ca. 15 seconds.

4.4.5.2

4.4.5.2 Record

4.4.5.24.4.5.2

Record----Select

RecordRecord

By pushing the Input-knob the preamplifier 720 changes into Record-Select-Mode. Now you may select the input to be looped through to the Record-Out connectors. The display shows the current Record-In for example REC IN 2. Spin the Input-knob until the desired Record-In appears in the display. The new Record-IN is only activated when you push again the Input-knob. Thus you confirm the new selection and the Record-Select-Mode is left. In the case you do not want to loop through any signal to the Record-Out connectors please choose REC-OFF.

The activated Record-Out disappears from the display after the Record-Select-Mode is left. The display shows the current input connected to the Main-Out connectors. If a Record out is activated the display shows sign “R”

Select

SelectSelect

switched on, DC-protection deactivated

Display for operating condition Record-Select-Mode

The settings of the Record-Select do not affect the signal present at the Main-Out connectors.

4.4.5.3

4.4.5.3 Programming

4.4.5.34.4.5.3

Programming::::

ProgrammingProgramming

The Input-knob is used in the Programming-Mode for selecting Program Functions and setting of values for the respective Program-Functions.

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Display after exiting the RecordSelect Mode with active Record-In

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4.4.6

4.4.6 Display / IR

4.4.64.4.6

Display / IR----receiver

Display / IRDisplay / IR

receiver (P)

receiverreceiver

(P)

(P) (P)

The display shows all relevant information for operating your preamplifier 720 . In operating mode the volume, the operating condition and the activated input is shown.

Except for the Programming-Mode the display shows always the current volume level.

720

720720

Security advice:

The IR-receiver for the remote control is located in the lower left corner behind the display glass. For best reception do not place any objects in front of the display.

Never place your preamplifier 720 on the front panel. The display glass could get scratched or even burst.

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button is

the selected

of the

nature of sound

5555 Programmi

5.1

5.1 Overview

5.15.1

Programming

ProgrammiProgrammi

Overview

OverviewOverview

The available Program-Functions allow adjusting the preamplifier 720 to your individual High-Fidelity setup.

The preamplifier 720 is already programmed with default settings. Further programming is not mandatory.

We recommend to adjust the Program-Functions Start-Volume to your setup and to limit the volume with the Program-Function Max-Volume. If you connect a recording device we recommend implicitly activating the Program-Function Record-Loop.

Element

Element Func

ElementElement

Prog-button The Prog-button changes the preamplifier 720 from operating-

Input-knob Spinning

ng of the

of the preamplifier

ngng

of the of the

preamplifier 720

preamplifierpreamplifier

Function

FuncFunc

mode to Programming-Mode and vice versa. The preamplifier 720 remains in the respective mode until the Progpressed again.

Spinning of the Input-knob allows selecting the desired Pro-

SpinningSpinning gram-Function. Pressing Program-Function. Now the value domain of the selected Program-Function is active. (red LEDs in display). Spinning Input-knob allows adjusting the desired value. Pressing put-knob approves the respective value.

tion

tiontion

720

720720

Pressing the Input-knob approves

PressingPressing

Spinning

SpinningSpinning

Pressing the In-

PressingPressing

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Preamplifier

Preamplifier 720

PreamplifierPreamplifier

User Manual

5.2

5.2 Program

5.25.2

5.2.1

5.2.1 Start

5.2.15.2.1

Program----FFFFunctions

ProgramProgram

Start----In

StartStart

InIn

unctions

unctionsunctions

This Program-Function defines which input shall be active after start-up if your preamplifier 720. After selecting the function Start-In the display shows the value domain (red LEDs active) and you may define the desired input.

Values: IN 1, IN 2, IN 3, IN 4, IN 5, IN 6

Default: IN 1

Display for function Start-In, value domain activated

720

720720

The selected input (IN 1...IN 6) will be activated when starting up (OFF -> ON) the preamplifier 720 the next time.

5.2.2

5.2.2 Start

5.2.25.2.2

Start----Record

StartStart

This Program-Function defines which input shall be looped through to the recordout connectors when starting up the preamplifier 720. After selecting the function Start-Record the display shows the value domain (red LEDs active) and you may define the desired input.

Display for function Start-Record, value domain activated

The selected input (IN 1...IN 6) will be looped through when starting up (OFF -> ON) the preamplifier 720 the next time. Select OFF if no signal shall be presented at the record-out connectors.

Record

RecordRecord

Values: IN 1, IN 2, IN 3, IN 4, IN 5, IN 6, OFF

Default: OFF

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5.2.3

5.2.3 Record

5.2.35.2.3

Record----Loop

RecordRecord

Loop

LoopLoop

In order to avoid a feedback loop with a connected recording device you have to instruct the preamplifier 720 with which input IN 1...IN 6 a feedback loop shall be impeded. The preamplifier 720 will now omit a feedback loop with this input.

After selecting the Program-Function Record-Loop the display shows the value domain (red LEDs active) and you may define to which input you have connected your recording device.

Display for function Record-Loop, Value domain activated

Values: IN 1, IN 2, IN 4, IN 5, IN 6, OFF

Default: OFF

The new setting is active as soon as you approve the value by pressing the Inputknob.

Example: You have connected the output of your recording device with the input IN 2 of the preamplifier 720. You have defined IN 2 for the program function Record-Loop. Now it is impossible to choose the input IN 2 as Record-In. The function Record-Select is not affected by the settings of the ProgramFunction Record-Loop.

Security advice: If later on you connect your recording device to another input of your preamplifier 720 you have to adjust the setting of the ProgramFunction Record-Loop.

Never connect the output of your recording device to the phono-input IN 3. The phono stage would be destroyed immediately. Therefore the value IN 3 is not available for the Program-Function Record-Loop.

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Preamplifier

Preamplifier 720

PreamplifierPreamplifier

User Manual

5.2.4

5.2.4 SSSStart

5.2.45.2.4

tart----Volume

Volume

tarttart

VolumeVolume

This Program-Function defines the volume when starting up the preamplifier 720. After selecting the function Start-Volume the display shows the value domain (red LEDs active) and you may define the desired volume level.

Value: 1...40

Default: 30

Display for function Start-Volume, Value domain activated

While switching to the value domain of the Program-Function Start-Volume the preamplifier 720 changes the current volume to the value defined in Start-Volume. Now you are able to judge whether the Start-Volume level is appropriate. As soon as the value domain is left the preamplifier 720 switches back to the former volume level.

720

720720

5.2.5

5.2.5 Dim

5.2.55.2.5

Dim----Volume

DimDim

This Program-Function defines the Dim-Volume. After selecting the ProgramFunction Dim-Volume the display shows the value domain (red LEDs active) and you may define the desired volume level.

Display for function Dim-Volume, Value domain activated

While switching to the value domain of the Program-Function Dim-Volume the preamplifier 720 changes the current volume to the value defined in Dim-Volume. Now you are able to judge whether the Dim-Volume level is appropriate. As soon as the value domain is left the preamplifier 720 switches back to the former volume level.

Security advice: Set the Dim-Volume to a moderate level. If you exchange a component of your system please check whether the setting still is appropriate.

Volume

VolumeVolume

Values: 0...40

Default: 20

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5.2.6

5.2.6 Max

5.2.65.2.6

Max ----Volume

Volume

MaxMax

VolumeVolume

You may limit the maximal volume level in order to avoid dangerous volume levels through malicious handling. Especially for high efficiency loudspeakers this security function should be used. After selecting the Program-Function Max-Volume the display shows the value domain (red LEDs active) and you may define the desired volume level.

Display for function Max-Volume, Value domain activated

While switching to the value domain of the Program-Function Max-Volume the preamplifier 720 will not adjust the volume level for security reasons!

Values: 40...80

Default: 80

In the case you limit the volume the control range is reduced accordingly (MaxVolume = 60, the volume control range is limited to 60 dB). When you reach the maximal volume level the display shows “M” (for example M 60)

Security advice: The settings of the Program-Functions Gain IN 1…IN 6 and Phono-Gain may provoke an additional +9 dB level difference between the different inputs. Define the Max-Volume for the input with the highest level.

5.2.7

5.2.7 Balance

5.2.75.2.7

Balance

Balance Balance

The Program-Function Balance defines the level difference between left and right channel. You can adjust the Balance in 1 dB steps. After selecting the ProgramFunction Balance the display shows the value domain (red LEDs active) and you may define the desired volume level.

Display for function Balance, Value domain activated

Values: <- 9...0...9 ->

Default: 0

Seite 26

While switching to the value domain of the Program-Function Balance the preamplifier 720 changes the current volume of left or right channel according to the setting

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Preamplifier

Preamplifier 720

PreamplifierPreamplifier

User Manual

of the Balance setting. Now you are able to judge whether the Balance is appropriate.

The Balance setting reduces the maximal possible volume control range of -80dB by the Balance setting (Balance <- 7 dB  volume control range –73 dB).

After switching back to the Operating-Mode the display shows balance settings as follows:

720

720720

Display for Balance-setting to the left

5.2.8

5.2.8 Name IN 1...IN 6

5.2.85.2.8

Name IN 1...IN 6

Name IN 1...IN 6Name IN 1...IN 6

You may rename the inputs IN 1…IN 6 by selecting on out of the predefined source name list. After selecting the Program-Function Name-IN 2 the display shows the value domain (red LEDs active) and you can define the desired name for input In 2.

Display for function Name-IN 4, Value domain activated

If you want to switch off the name please select OFF. The respective input will then be shown as IN 1...IN 6.

Example: After you selected SACD for the input IN 4 the display shows the input as follows.

Display for Balance-setting tot the right

Values: AUX, AUX1, AUX2, CD, CD1, CD2,

DAC, DAT, DCC, DVD, DVD1, DVD2, DVDA, HD, HiMD, LD, MD, MP3, PC, PHON, SACD, TAPE, TUNE, TV, DVB, DAB, OFF

Default: OFF

Display for Name-IN 4 = SACD

The new input names IN 1…IN 6 will be activated after you have left the Programming-Mode.

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5.2.9

5.2.9 Bandw

5.2.95.2.9

Bandwidth IN 1…IN 6

BandwBandw

idth IN 1…IN 6

idth IN 1…IN 6idth IN 1…IN 6

Digital signal sources can emit remarkable levels of high frequency noise through the connecting cables. This will lower the sonic performance of your overall system. You may limit the bandwidth of each input IN 1…IN 6 individually depending on the quality of the source signal. After selecting the Program-Function Bandwidth-IN 1 the display shows the value domain (red LEDs active) and you can limit the bandwidth for input In 1.

Display for function Bandwidth-IN 4 Value domain activated

Values: high: no limitation

mid: 200 kHz, -3dB low: 20 kHz, -3dB

Default: high

After you have left the Programming-Mode the display shows the bandwidth limitation as follows.

Display for Bandwidth limitation of input IN 4

5.2.10

5.2.10 Gain IN 1...IN 6

5.2.105.2.10

Gain IN 1...IN 6

Gain IN 1...IN 6Gain IN 1...IN 6

Different signal sources have different output levels. You can adjust the level for each input by 0/+3/+6/+9 dB individually. After selecting the Program-Function Gain-IN 1 the display shows the value domain (red LEDs active) and you can adjust the level for input In 1.

For the input IN 3 (phono) exists additionally the Program-Function Phono Gain which defines the basic amplification in to levels (+54 dB, +60 dB)

Values: 0/+3/+6/+9

Seite 28

Default: 0

Display for function Gain-IN 1, Value domain activated

Gain adjustments are immediately performed so you can check whether the Gainsetting is appropriate.

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Preamplifier 720

PreamplifierPreamplifier

User Manual

720

720720

Security advice: level. Set the gain for this input to +0 dB. Now adjust the other inputs accordingly. Please use a moderate volume level to do so.

If you exchange signal sources you should check whether the gain setting are still appropriate. If you run a high level signal source with a high gain the output signal could get distorted.

5.2.11

5.2.11 Phono Gain

5.2.115.2.11

Phono Gain

Phono GainPhono Gain

This Program-Function allows you to adjust the basic amplification of Phonoamplifier to the requirements of your cartridge. Additionally you have the possibility to use the function Gain-In 3 to further adjust the level of the phono amplifier.

Display for function Phono Gain, Value domain activated

Define which signal source has the highest output

Values: high +54 dB @ 1 kHz

low +60 dB @ 1 kHz

Default: low

Phono Gain settings are immediately performed so you can check whether the setting is appropriate.

5.2.12

5.2.12 Phono High Pass

5.2.125.2.12

Phono High Pass

Phono High PassPhono High Pass

This Program-Function (de)activates the subsonic filter (RIAA-IEC; -3 dB @ 20 Hz) of the phono amplifier.

Display for function Phono High Pass, Value domain activated

The settings of the Program-Function Phono High Pass are immediately executed for a direct feedback.

Phono High Pass = OFF should be used only for top quality LP’s and decoupled turntables. For security reasons we recommend to activate the subsonic filter.

Values: ON, OFF

Default: ON

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5.2.13

5.2.13 Surround

5.2.135.2.13

Surround----IN

SurroundSurround

ININ

The Program-Function Surround-IN activates the Surround-Mode for the selected input.

Display for function Surround-IN, Value domain activated

In Surround-Mode the settings for Volume and Balance do not have any influence. The input-signal present at the Surround-IN is transferred to the outputs with the level defined in Program-Function Surround Max-Vol.

Values: IN 1, IN 2, IN 4, IN 5, IN 6, OFF

Default: OFF

The Program-Function Surround-IN is not available for the input IN 3 (phono).

If you have activated the Surround-IN for input IN 4 the display will show as follows.

Display for activated Surround-IN, input IN 4 and Surround Max-Vol = 45.

5.2.14

5.2.14 Surround Max

5.2.145.2.14

Surround Max----Vol

Surround MaxSurround Max

The Program-Function Surround Max-Vol defines the output level for the SurroundIN. The setting of this function has no impact if the Surround-IN is OFF.

Display for function Surround Max.Vol, Value domain activated

Vol

VolVol

Values: 40…80

Default: 40

Seite 30

You can select the optimal volume level at the output of the preamplifier 720 depending on your surround system. The level can be adjusted in 1 dB steps.

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Preamplifier 720

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User Manual

Level: 70 = - 0.5 dB total gain input to output (sym)

71 = + 0.5 dB total gain input to output (sym)

Please be aware that the Program-Functions Gain-IN 1…IN 6 remain active in the Surround-Mode. If you select for instance + 3dB gain for the Surround IN the level 71 will result in a total gain input to output of 3.5 dB.

5.2.15

5.2.15 Brightness

5.2.155.2.15

Brightness

BrightnessBrightness

The intensity of the display can be adjusted in three steps.

Values: 1 = low

2 = medium 3 = high

Display for function Brightness, Value domain activated

Default: 3

720

720720

The intensity is adjusted immediately.

5.2.16

5.2.16 Remote Ctrl

5.2.165.2.16

Remote Ctrl ID

Remote CtrlRemote Ctrl

If you use two different preamplifiers or the Remote Ctrl ID of the preamplifier 720 is already used by another device of your HiFi-setup you can change the identification of your preamplifier 720. Factory default is 1 (For changing the Remote ctrl ID of the remote control 720/740 please refer to chapter 6.2.11, page 36). After selecting the Program-Function Remote Ctrl ID the display shows the value domain (red LEDs active) and you can select the desired ID.

Display for function Remote Ctrl ID, Value domain activated

The new Remote Control ID will be activated after the Programming-Mode is left.

ID ID

Values: 1, 2

Default 1

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If you change the Remote Ctrl ID the preamplifier 720 can only be controlled by the remote control 720/740 after you have switched the Remote Ctrl ID of the remote control 720/740 alike.

5.2.17

5.2.17 Load

5.2.175.2.17

Load----Default

Default

LoadLoad

DefaultDefault

In case you want to overwrite all your individual settings by the factory default values you select the Program-Function Load-Default and you confirm with YES. The following values will be loaded.

Display for function Load-Default, Value domain activated

Security advice: Please note your personal settings in the table „Individual Settings“ on page 44.

5.2.18

5.2.18 Software

5.2.185.2.18

Software----Info

SoftwareSoftware

This function shows the version of software installed on your preamplifier 720.

Info

InfoInfo

Start-In: IN 1 Start-Record: OFF Record-Loop: OFF Start-Volume: 30 Dim-Volume: 20 Max-Volume: 80 Balance: 0 Name IN 1..6: OFF

Bandwidth IN 1.. 6 HIGH Gain IN 1.. 6: 0 Phono-Gain: LOW Phono High Pass: ON Surround-IN: OFF Surround-Max-Vol: 40 Brightness: 3 Remote Ctrl ID 1

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Preamplifier

The remote control controls all functions of the

the

buttons of the remote control

of the soulution

. This is

Preamplifier 720

PreamplifierPreamplifier

User Manual

720

720720

6666 Remote control

Remote control

Remote controlRemote control

6.1

6.1 Start of operation and maintenance

6.16.1

Start of operation and maintenance

Start of operation and maintenanceStart of operation and maintenance

The remote control requires 2 AAA batteries (enclosed in the scope of delivery). We recommend using only top quality products.

soulution preamplifiers, integrated amplifier and CD/SACD-Players. You can also access Program-Functions of these products.

The Volume +/will always control the volume preamplifier or integrated amplifier also the case when changing the remote control to CD-mode.

Exchange of batteries:

open the battery tray on the rear side.

insert the batteries into the tray as indicated. Ensure correct polarity of the batteries.

close the tray with corresponding screw.

dispose the exhausted batteries

6.2

6.2 Handling

6.26.2

6.2.1

6.2.1 IR

6.2.16.2.1

Handling

HandlingHandling

IR----Transmitter (1)

Transmitter (1)

IRIR

Transmitter (1)Transmitter (1)

Ensure that the IR-Transmitter is not covered and that the IR-Receiver is not hided by any objects. The remote control works up until a distance of 5m and a maximal angel of incident of ±45°.

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6.2.2

6.2.2 Input ±

6.2.26.2.2

Input ± / Next Track

Input ± Input ±

/ Next Track, (5/6)

/ Next Track/ Next Track

PRE-mode: The Input ± buttons switch between the different inputs. With

CD-modus: The Next Track buttons skip the tracks forward or backward.

In Programming-Mode (Prog-button) the Input ± buttons allow to select the desired function and the Enter-button confirms the selection. If the value domain of a function is activated the Input ± buttons allow setting the new value and Enter-button confirms the new setting.

, (5/6)

, (5/6), (5/6)

the Enter-button you change to the Record-select-mode. In this mode the Input ± buttons allow to select the Record-IN.

6.2.3

6.2.3 Volume

6.2.36.2.3

Volume----Dim / Play

VolumeVolume

Dim / Play ----Pause

Dim / PlayDim / Play

PRE-mode: Pressing the Volume-Dim button (de)activates the Volume Dim

CD-mode: The Play-Pause button controls the Play/Pause function of the

6.2.4

6.2.4 Volume ± (2,3)

6.2.46.2.4

Volume ± (2,3)

Volume ± (2,3)Volume ± (2,3)

The Volume ± buttons control always the volume of the preamplifier, integrated amplifier irrespective of the PRE-/CD-mode of the remote control.

6.2.5

6.2.5 Mute (9)

6.2.56.2.5

Mute (9)

Mute (9)Mute (9)

PRE-mode: The Mute-button controls always the mute function of the pre-

Pause (4)

PausePause

(4)

(4)(4)

function of the preamplifier or the integrated amplifier.

CD/SACD-Players

amplifier, integrated amplifier. The mute function disconnects the Main-Out and the Record-Out connectors.

Seite 34

CD-mode: no function

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Preamplifier

Preamplifier 720

PreamplifierPreamplifier

User Manual

6.2.6

6.2.6 Open/Close (11)

6.2.66.2.6

Open/Close (11)

Open/Close (11) Open/Close (11)

PRE-Mode: no function.

CD-mode: The Open/Close button controls the drawer of the player.

6.2.7

6.2.7 Prog

6.2.76.2.7

Prog----button

button (8)

ProgProg

buttonbutton

(8)

(8) (8)

PRE-mode: The Prog-button switches the preamplifier, integrated amplifier

between Operating-Mode and Programming-Mode.

CD-mode: The Prog-button switches the CD/SACD-Player between Operat-

ing-Mode and Programming-Mode.

720

720720

6.2.8

6.2.8 PRE

6.2.86.2.8

PRE----button

PREPRE

Pressing the PRE-button switches the remote control to PRE-mode for the control of the preamplifiers or integrated amplifiers. While pressing the buttons of the remote control the red LED (14) will light up.

6.2.9

6.2.9 CD

6.2.96.2.9

CD----button

CDCD

Pressing the CD-button switches the remote control to CD-mode for the control of the CD/SACD-Players. While pressing the buttons of the remote control the blue Leds under the Play/Pause button (4) will light up.

button (12)

(12)

buttonbutton

(12) (12)

button (13)

buttonbutton

(13)

(13) (13)

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6.2.10

6.2.10 Power (10)

6.2.106.2.10

6.2.11

6.2.11 Remote Ctrl ID

6.2.116.2.11

Power (10)

Power (10)Power (10)

PRE-mode: The Power-button defines the operating condition ON or OFF of

CD-mode: The Power-button defines the operating condition ON or OFF of

Remote Ctrl ID

Remote Ctrl IDRemote Ctrl ID

PRE-mode: Change the transmitter Remote Ctrl ID of the remote control as

ID 1: Input+ button (6), Input- button (5) and Power (10)

the preamplifier, intzegrated amplifier.

the CD/SACD-Player.

follows:

ID 2: Input+ button (6), Input- button (5) and Mute (9)

Press the respective buttons for approximately 5 seconds. The

remote control confirms the new ID via red LED on its front.

The Remote Control ID of the preamplifier, integrated amplifier

has to be changed as well by selecting the Program-Function Remote Control ID, otherwise the preamplifier, integrated amplifier will not react to the remote control no more.

CD-mode: The Remote Ctrl ID can not be changed.

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Preamplifier 720

PreamplifierPreamplifier

User Manual

720

720720

7777 Protection functions of the preamplifier

Protection functions of the preamplifier 720

Protection functions of the preamplifierProtection functions of the preamplifier

Comprehensive protection functions ensure a secure operation and long durability. The preamplifier 720 disposes over the following functions:

Overcurrent

Overcurrent::::

OvercurrentOvercurrent

For currents > 1 Ampere at the Main-Out the preamplifier 720 shuts down automatically.

DC----PROTECT

PROTECT::::

DCDC

PROTECTPROTECT

Your preamplifier 720 is protected against DC-offset at the inputs IN 1...IN 6. The input signal is permanently monitored for DC-components. As soon as a DC-offset is detected a coupling capacitor is switched into the signal path. This capacitor is bypassed if the DC-offset has ceased for at least 15 seconds. The display shows the symbol for the capacitor (╪).

720

720 720

While switching between inputs the capacitor is activated automatically for security reasons. This is not

a malfunction of your source device.

Fuse

Fuse::::

FuseFuse

The mains connection has a fuse which protects your preamplifier 720 against too high power consumption. The fuse is located within the mains switch on the rear side of the preamplifier 720.

Model 220-240 V, 50-60Hz 2A/T 250V micro fuse 5x20mm Model 100-120 V, 50-60Hz 4A/T 250V micro fuse 5x20mm

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soulution

Check the cabling to the mains supply. Eventually replace

, signal sources

fier to your loudspeakers, whether

rce device is

ay shows

display shows

. This error may also

nature of sound

8888 Trouble shooting

Trouble shooting

Trouble shootingTrouble shooting

Error

Error Action

ErrorError

No Display

Display

No No

DisplayDisplay

No music

No musicNo music

POWER FAIL

POWER FAILPOWER FAIL

OVERCURRENT

OVERCURRENTOVERCURRENT

Action

ActionAction

the fuse of your preamplifier 720.

Check the cabling to your power amplifier and from the power ampli you have selected the correct input, the sou muted and if the power amplifier is switched on.

If the power supply to the audio channels is interrupted an error in the power supply unit has occurred the preamplifier 720 is shut down automatically. The displ POWER FAIL.

If the current at the Main-Out exceeds 1 ampere the preamplifier 720 is shut down automatically. The OVERCURRENT. Check the cabling to the power amplifier be provoked by defect or switched off power amplifier.

8.1

8.1 Actions after the appearance of an error

8.18.1

Actions after the appearance of an error

Actions after the appearance of an errorActions after the appearance of an error

If you con not identify the error please disconnect the mains supply (before you disconnect the preamplifier 720 has to be in operating condition OFF) and contact your soulution dealer.

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Preamplifier 720

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User Manual

720

720720

9999 CCCCare and maintenance

9.1

9.1 Burn

9.19.1

are and maintenance

are and maintenanceare and maintenance

Burn----in

BurnBurn

inin

The preamplifier 720 will play on top level immediately after the first placing into operation. However during the first 20-50 hours of operation you will notice a further improvement of its sonic qualities.

9.2

9.2 Longlife

9.29.2

Longlife----precaution

LonglifeLonglife

precaution ssss

precautionprecaution

We use only highest quality components for the preamplifier 720. Components prone to aging are kept under constant voltages in stand-by (OFF) condition in order to further increase their lifetime. In stand-by (OFF) condition the preamplifier 720 dissipates ca. 6 Watts.

Security advice:

Unplug your preamplifier 720 if you leave for longer periods

9.3

9.3 Cleaning

9.39.3

Cleaning

CleaningCleaning

Please use a soft towel for the cleaning of your preamplifier 720 . We recommend the use of a nonabrasive micro fibre towel. Please do not employ any solvents.

Security advice: Liquidity is not allowed to enter the preamplifier 720. The electronic may be damaged seriously.

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nature of sound

10 Service

1010

11 Warranty

1111

Service

ServiceService

If your soulution preamplifier needs service please contact your soulution dealer. For further information see www.soulution-audio.com

Warranty

WarrantyWarranty

All soulution products are guaranteed against defects in material and workmanship for five years from date of purchase.

The guarantee is void if the preamplifier 720 has been subject to misuse or negligence or has been modified, repaired or opened by a non authorised person without written authorisation of Spemot AG.

For the return transport to our premises please use exclusively the original packaging. Transport damages are not subject to this guarantee, repairs will be charged. We recommend effecting transport insurance.

If you not posses the original packaging no more please contact your soulution dealer.

Basic repairs may be completed by your soulution dealer. Please clarify whether he is able to do the work before you send the preamplifier 720 back to us.

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Preamplifier

Preamplifier 720

PreamplifierPreamplifier

User Manual

12 Specific

1212

Specification

SpecificSpecific

Specific

Specification

SpecificSpecific

General

GeneralGeneral

ationssss

ationation

ation Data

ationation

Data

DataData

Nominal voltage Model 220-240V 220 - 240 V, 50-60 Hz Model 100–120V 100 – 120 V, 50-60 Hz Nominal rating 250 W Power consumption (OFF) <0.5 W Power consumption (ON) 60 W

Line

Line----inputs

inputs:::: IN 1/IN 2, IN 4...IN 6

LineLine

inputsinputs

IN 1/IN 2, IN 4...IN 6

IN 1/IN 2, IN 4...IN 6IN 1/IN 2, IN 4...IN 6 Amplification symmetrical (IN 1/IN 2) +9.5...+18.5 dB asymmetrical (IN 4...IN 6) +3.5...+12.5 dB Frequency response DC-1 MHz Slew rate 400 ns THD+N <0.0006 % Signal-to-Noise ratio 140 dB Crosstalk Input impedance

Phono

Phono----Input

PhonoPhono

Input :::: IN 3

InputInput

symmetrical (IN 1/IN 2)

asymmetrical (IN 4...IN 6)

IN 3

IN 3IN 3

105

kΩ kΩ

Amplification +54...+60 dB Amplifier bandwidth (internal) DC-1 MHz Slew rate 400 ns THD+N <0.0006 % Input-Impedance (no adaptation) 1

Outputs

OutputsOutputs Voltage Main-Out symmetrical max. 16 Main-Out asymmetrical max. 8

kΩ

Vrms@100Ω

Vrms@100Ω Current max. 1 A Impedance Main-Out symmetrical 2 Main-Out asymmetrical 2 Record-Out 100 LINK-Out +12 V

Dimensions

DimensionsDimensions

Ω

Dimensions 480x450x167 mm Weight ca. 30 kg

720

720720

Technical specifications are subject to change without prior notification.

Page 41

Page 44

soulution

nature of sound

13 Dimension

1313

Dimensionssss

DimensionDimension

Seite 42

Page 45

Preamplifier

power supply is

is switched on it changes to

condition P ON. The audio power supply unit is

conditions are reached and no

is ready for

or an

is shut down automatically. The display shows POWER

shows

In the case other soulution components are controlled via the

LINK connection the preamplifier shows in the display (LINK:

Preamplifier 720

PreamplifierPreamplifier

User Manual

14 Definition

1414

Definition ssss

DefinitionDefinition

Operating conditions

Operating conditionsOperating conditions

OFF

OFFOFF (Standby)

In operating condition OFF only the standbyactive. Power consumption of <0.5 Watts.

As soon as the preamplifier 720 the operating

P ON

P ONP ON (PROTECT ON)

started and the audio channels are checked for potential errors. When constant operating errors are detected the preamplifier 720 changes into operating condition ON.

ONON

In operating condition ON the preamplifier 720 operation.

If the power supply to the audio channels is interrupted

POWER FAIL

POWER FAILPOWER FAIL

error in the power supply unit has occurred the preamplifier 720 FAIL.

If the current at the Main-Out exceeds 1 ampere the prea

OVER

OVER----CURRENT

OVEROVER

CURRENT

CURRENTCURRENT

plifier 720 is shut down automatically. The display OVERCURRENT.

720

720720

LINK ERROR

LINK ERRORLINK ERROR

ERROR) if an error has occurred.

Labelling

LabellingLabelling

SYM

SYM Abbreviation for symmetrical connectors.

SYMSYM

XLR Female

XLR FemaleXLR Female

XLR Male

XLR MaleXLR Male

ASYM

ASYM Abbreviation for asymmetrical connectors.

ASYMASYM

1. Ground, 2. + Phase, 3. - Phase

Page 43

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soulution

nature of sound

15 Individual Settings

1515

Individual Settings

Individual SettingsIndividual Settings

Function

Function Setting

FunctionFunction

Start-In IN 1

Start-Record OFF

Record-Loop OFF

Start-Volume 40

Dim-Volume 10

Max-Volume 80

Balance 0

Name IN 1 OFF

Name IN 2 OFF

Setting Default

SettingSetting

Default----Value

DefaultDefault

Value

ValueValue

Name IN 3 OFF

Name IN 4 OFF

Name IN 5 OFF

Name IN 6 OFF

Bandwidth-IN 1 HIGH

Bandwidth-IN 2 HIGH

Bandwidth-IN 3 HIGH

Bandwidth-IN 4 HIGH

Bandwidth-IN 5 HIGH

Bandwidth-IN 6 HIGH

Gain IN 1 0

Gain IN 2 0

Gain IN 3 0

Gain IN 4 0

Gain IN 5 0

Gain IN 6 0

Phono Gain LOW

Seite 44

Phono High Pass ON

Surround-IN OFF

Surround Max-Vol 40

Brightness 3

Remote Ctrl ID 1

Page 47

Page 48

Spemot AG

Industriestrasse 70

CH-4657 Dulliken

www.soulution-audio.com

[email protected]

soulution

nature of sound

part.no

part.no.... 92130

92130

part.nopart.no

9213092130