Preamplifier Preamplifier 721 User manual User manual
Contents
1. 4 3 2 4 3 3 4 3 4 Preamplifier User Manual n Symmetrical input IN 1 B Your preamplifier 721 has one symmetrical input IN 1 Connect your high quality source equipment with symmetrical cables to the preamplifier 721 Security advice please follow the security advices on page 6 Asymmetrical inputs IN 2 IN 4 C Your preamplifier 721 has three asymmetrical inputs IN 2 IN 4 Connect your sig nal sources with asymmetrical cables with the preamplifier 721 Security advice please follow the security advices on page 6 Main Out D The preamplifier 721 provides symmetrical as well as asymmetrical output termi nals Main Out Connect your amplifier with the preamplifier 721 with your pre ferred cables Due to the exceptional load stability there are no restriction 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 pre requisite The level difference between the symmetrical and asymmetrical output accounts for 6 dB 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 721 and power amplifier Ground Lift 12. Out exceeds 1 ampere the pream plifier 721 is shut down automatically The display shows OVERCURRENT OVERCURRENT Check the cabling to the power amplifier This error may also be provoked by defect or switched off power amplifier Actions after the appearance of an error If you con not identify the error please disconnect the mains supply before you dis connect the preamplifier 721 has to be in operating condition OFF and contact your soulution dealer 9 1 9 2 9 3 Preamplifier User Manual n Care and maintenance Burn in The preamplifier 721 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 fur ther improvement of its sonic qualities Longlife precautions We use only highest quality components for the preamplifier 721 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 721 dissipates ca 6 Watts Security advice Unplug your preamplifier 721 if you leave for longer periods Cleaning Please use a soft towel for the cleaning of your preamplifier 721 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 721 The electronic may be damaged seriously Page 721 35 soulLU
3. a eiee eban eirean Er AEAN EE a ibe iai 8 POWCHSUPDIY ccait ccissisceszadeaetusiecis san tabtinahtlahdanciaestuancsecsvosinasucaatarsensseeasan cs 9 Galea WSUME MT ies ssscaciedi saves caine cashes pees daneans caaeetdccaumaceessteeten Jdeesesdescavaes 9 IIC P ROMECT 2a csc tatevaatiaas utedadetcvdahais iid eateoeatebavdaea a Figen EAE ESAE NANE 9 Bandwidth limitation cceceeeeeeeceeeee eee eeeeeeaaeeeeeeeesaeeeeaeeeeeeeeeaa neers 10 Start of operation and handling of the preamplifier 721 cc00 11 Scope of delivery and Packing cccccccsecceeceeeceeeceeeceseeeseeeeeeeeeeeeenees 11 Optimal positioning of your preamplifier 721 ssssssnsssssssnsereserreereenne 11 Rear panel of the preamplifier 721 ccccccccccsecce seca eeseeeeeeeeeeeeeeeeees 12 Front panel of the preamplifier 721 ccceececeeceeeee cece ceeeeeaeeeeeeeeeaeeeees 15 Programming of the preamplifier 721 ccccccccseccseeceeeceeseeeeeeeeseeeeees 20 OVEIVICWe ie cc sdancent sstansctacettteteateus ce E A E T E ATT 20 Program TUMCTIONS is cee222onsscceiseees dedeaxncdecagaaes in fete edd ovbedanebecedddenteesdedoeut 21 Remote control s i5ss sven cand gave densaea es cos end Ese Ek anae anini aT Eiana 29 Start of operation and maintenance cccecececeseeeeeeeeeeeeseeeseeeeeeeeenees 29 Hamline xis ssasGercotisone JiswurcciviGevcasiesiertaviguxtesiinaneddeodeveanbesnes E aE cases 29 Protection functions of the preamplifier
4. if not installed and used in accordance with the instructions may cause harm ful interference to radio communications However there is no guarantee that inter ference 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 encour aged 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 z 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 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 Preamplifier User Manual Table of contents Quick Stanan enna REENEN EEEE EE EEA TEERAA 5 Important security advices cece eecece cece cece cece test ee ee estes sa eeeeaeeeeeeeeeaa ented 6 Technical HiShliGhts ccccccccccsseceeeeeeseeseeeeeeeeeeeeeeesseeeeeeeeesseeeeae estes 8 AV oUt sssi e aa a E E aE 8 Volume Comttl Olesa erara dus e Ea A EA E EE NEA 8 UME DWTS TASC sce
5. 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 721 disposes over an additional volume control path only active while actually changing the volume This parallel volume control is real ised 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 Output stage The output stage is optimised for velocity precision and impulse current rating Thanks to its low output impedance of 2Q and Class A operation 40mA idle cur rent the output stage stable on every load also long cables are driven without prob lems The theoretical maximal current rating of 3 amperes is limited to 1 ampere This is realised with a protection circuit outside the signal path Due to the bandwidth of 1 MHz 3 dB internally the preamplifier 721 works up until frequencies of 40 MHz all details of the music reproduced naturally The 3 4 3 5 3 6 Preamplifier User Manual n spatial reproduction gets really three dimensional and holographic optimal re cording prerequisite The power of the output stage ensures that all these details are truly transmitted to your amplifier Cable losses are
6. the input with the highest level 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 Program Function Balance the display shows the value domain red LEDs active and you may define the desired volume level Values lt 9 0 9 gt Default 0 Display for function Balance Value domain activated While switching to the value domain of the Program Function Balance the preampli fier 721 changes the current volume of left or right channel according to the setting of the Balance setting Now you are able to judge whether the Balance is appropri ate The Balance setting reduces the maximal possible volume control range of 80dB by the Balance setting Balance lt 7 dB gt volume control range 73 dB After switching back to the Operating Mode the display shows balance settings as follows SACD IH 4 SACD IN 4 SER os GH GH Display for Balance setting to the Display for Balance setting tot the left right Name IN 1 IN 4 You may rename the inputs IN 1 IN 4 After selecting the Program Function Name IN 1 IN 4 the display shows the value domain red LEDs active and you can define the desired name for the respective input Page 721 23 soulLUtion natuce of sound 5 2 7 Seite Values AUX AUX1 AUX2 CD CD1 CD2 DAC DAT DCC DVD DVD1 DVD2 DVDA HD HiMD LD MD MP3
7. the output level for the Surround IN The setting of this Program Function has no impact if the Surround IN is OFF SURROUND max UoL Values sas 45 FROGS Display for function Surround Max Default 40 Vol Value domain activated You can select the optimal volume level at the output of the preamplifier 721 de pending on your surround system The level can be adjusted in 1 dB steps 26 5 2 11 5 2 12 Preamplifier 721 User Manual n 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 settings of 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 Brightness The intensity of the display can be adjusted in three steps BRIGHTHESs aes ao a 2 medium 3 high PROG Display for function Brightness Default 3 Value domain activated The intensity is adjusted immediately Remote Ctrl ID If you use two different preamplifiers or the Remote Ctrl ID of the preamplifier 721 is already used by another device of your HiFi system you can change the identifica tion of your preamplifier 721 Factory default is 1 For changing the Remote Ctrl ID of the remote control 720 740 please refer to page Fehler Textmarke nicht definiert After selecting the Program Function Remote Ctrl ID the disp
8. 2 IN 3 IN 4 IN 5 IN 6 Default IN 1 Display for function Start In value domain activated The selected input IN 1 IN 6 will be activated when starting up OFF gt ON the preamplifier 721 the next time Start Volume This Program Function defines the volume when starting up the preamplifier 721 After selecting the Program Function Start Volume the display shows the value do main red LEDs active and you may define the desired volume level START uoLUME Value aca E ae Default 30 PREGE Display for function Start Volume Value domain activated While switching to the value domain of the Program Function Start Volume the pre amplifier 721 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 721 switches back to the former volume level 721 Page 21 soulLUtion 5 2 3 5 2 4 Seite natuce of sound ecm SS Dim Volume This Program Function defines the Dim Volume After selecting the Program Function Dim Volume the display shows the value domain red LEDs active and you may define the desired volume level Values 0 40 DTP WL UME 4h Default 20 PROGI Display for function Dim Volume Value domain activated While switching to the value domain of the Program Function Dim Volume the pre amplifier 721 changes the current volume to the
9. 721 cccceccseeeeeeeeeeeeeeeeees 33 Trouble SHOOTING irisse aiii a eaaa 34 Actions after the appearance of an effOf ssssssssresserrsrrererresrerrerrerrene 34 Care and maintenance siissescdesseceiasiiedecavlanccabieteeecaqusseessenesigs daplaweedieays 35 BUMM se eea a ameastepancea tars fanergaendcesthainizeincectan nite 35 Longlife precautionS cccccceccceesceceeceeeeeceeeceseeeeeeeeeseeeeeaeeeeseneeeaneeees 35 Cleaning saves svtwerediveaieeiacdiawees ove dues dveutsenchuaunnd sstvGer dvvswrce devas ceansvaurcdeitiens 35 SOVICE tvevuesaniniisnne seennt das ena nak eons a Aea E AASS 36 elare miS A A E 36 SPCC CALLOMS i222 ccechetedecsstee oofersdclacebensgneetstedeceetes caecs EESE EEAO RE Liata 37 IDIMEAS IONS val s cscnztzestanainncumastecusanadssitunstveydavascoeuntesichdauatsaiesanstvestanasens 38 DOTIMITIONS siiis oe snd smvesanice ied ossanassabhabe ra svaameeeaniabers E AE AEE 39 Individual Settings cccccccceccsseceeeeeeeeeeeeeeeeeeeeeeseeseeeeseeeeeeeseeeaeeeeees 40 Page 721 3 Quick start Unpacking Positioning Cabling Programming Switch on Preamplifier User Manual n Unpack the preamplifier 721 and store the packing for future transportations Security advice Your preamplifier 721 has a top class surface Please take care during installation Position the preamplifier 721 on a stable base Security advice Cooling air must be able to circu late and es
10. In operating condition ON the preamplifier 721 is ready for operation If the power supply to the audio channels is interrupted or an error in the power supply unit has occurred the preamplifier 721 is shut down automatically The display shows POWER FAIL If the current at the Main Out exceeds 1 ampere the pream plifier 721 is shut down automatically The display shows OVERCURRENT In the case other soulution components are controlled via the LINK connection the preamplifier 721 shows in the display LINK ERROR if an error has occurred Abbreviation for symmetrical connectors amp 1 Ground 2 Phase 3 Phase 1 Ground 2 Phase 3 Phase Abbreviation for asymmetrical connectors Page 721 39 soulution natuce of sound ee 15 Individual Settings Function Setting Default Value Start In IN 1 Start Volume 40 Dim Volume 10 Max Volume 80 Balance 0 Name IN 1 OFF Name IN 2 OFF Name IN 3 OFF Name IN 4 OFF Bandwidth IN 1 HIGH Bandwidth IN 2 HIGH Bandwidth IN 3 HIGH Bandwidth IN 4 HIGH Gain IN 1 0 Gain IN 2 0 Gain IN 3 0 Gain IN 4 0 Surround IN OFF Surround Max Vol 40 Brightness 3 Remote Ctrl ID 1 Seite 40 Spemot AG Industriestrasse 70 CH 4657 Dulliken www soulution audio com info soulution audio com souLUtion natuce of sound part no 92132
11. PC PHON SACD TAPE TUNE TV DVB Display for function Name IN 4 DAB OFF Value domain activated Default OFF If you want to switch off the name please select OFF The respective input will then be shown as IN 1 IN 4 Example SACD for the input IN 4 Display for Name IN 4 SACD The new input names IN 1 IN 4 will be activated after you have left the Program ming Mode Bandwidth IN 1 IN 4 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 4 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 band width for input In 1 AGORA Values high no limitation akih E Ps Th Tb Se nee mid 200 kHz 3dB MID low 20 kHz 3dB PRINS Default high Display for function Bandwidth IN 4 Value domain activated 24 5 2 8 Preamplifier User Manual n After you have left the Programming Mode the display shows the bandwidth limita tion as follows Display for Bandwidth limitation of input IN 4 Gain IN 1 IN 4 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 th
12. Preamplifier 721 User manual souLUtion natuce of sound Preamplifier User Manual n Dear client We are proud that you decided yourself for a soulution preamplifier You have ac quired 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 721 in your High Fidelity system This manual contains also useful tips for the optimisation of your overall HiFi system If there are any questions regarding the start up or operation of your preamplifier 721 please do not hesitate to contact your dealer Have fun Your soulution team Page 721 1 soulLUtion Seite 2 natuce of sound ee CE Declaration of Conformity Spemot AG declares that this product is in conformance with the following direc tives and standards Low Voltage Directive 73 23 EEC EN IEC 60065 2002 Electromagnetic Compatibility 89 336 EEC replaced by 92 31 EEC and 93 68 EEC EN 55013 EN 55020 EN 61000 3 2 3 FCC Notice 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 de signed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and
13. cape unrestricted Disconnect all electrical appliances of your HiFi system from the mains supply Connect your preamplifier 721 with your amplifier and signal sources according to user manual Use the respective signal cables and the cable for the LINK system Reconnect the preamplifier 721 and all other components of your HiFi system with mains supply Please use the enclosed high class mains cable for your preamplifier 721 Security advice While manipulating with cables the preamplifier 721 has to remain disconnected from the mains supply Default values for all Program Functions are programmed No additional programming is required for the start up of your pre amplifier 721 Security advice We suggest programming of the Program Functions Start Volume and Max Volume Switch on your source devices and the preamplifier 721 Turn down the volume of the preamplifier 721 to a minimal level Switch on your amplifier Security advice Before you switch on the pream plifier 721 check whether the cabling is done correctly Page 721 5 soulLUtion Seite natuce of sound Important security advices User manual Read this user manual carefully before you start up your preamplifier 721 and fol low all installation and security advices Please keep this user manual In the case this manual gets lost you have the possi bility to download it from the soulution webpage http www soulution audio com do
14. d get scratched or even burst Page 721 19 soulLUtion natuce of sound 5 Programming of the preamplifier 721 5 1 Overview The available Program Functions allow adjusting the preamplifier 721 to your indi vidual High Fidelity system The preamplifier 721 is already program with default settings The programming of your preamplifier 721 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 Element Function Prog button The Prog button changes the preamplifier 721 from Operating Mode to Programming mode and vice versa The preamplifier 721 remains in the respective mode until the Prog button is pressed again Input knob Spinning of the Input knob allows selecting the desired Pro gram function Pressing the Input knob approves the selected Program Function Now the value domain of the selected Pro gram Function is active red LEDs in display Spinning of the Input knob allows adjusting the desired value Pressing the In put knob approves the respective value Seite 20 5 2 5 2 1 5 2 2 Preamplifier User Manual n Program functions Start In This Program Function defines which input shall be active after start up if your pre amplifier 721 After selecting the Program Function Start In the display shows the value domain red LEDs active and you may define the desired input Values IN 1 IN
15. ducts The Volume buttons of the remote control will always control the volume of the soulution preamplifier or integrated amplifier This is also the case when changing the remote con trol to CD mode 6 1 Start of operation and maintenance The remote control requires 2 AAA batteries enclosed in the scope of delivery We recommend using only top quality products 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 s close the tray with corresponding screw dispose the exhausted batteries 6 2 Handling 6 2 1 IR 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 Page 29 soulLUtion 6 2 2 6 2 3 6 2 4 6 2 5 Seite natuce of sound ee Input Next Track 5 6 PRE mode The Input buttons switch between the different inputs With the Enter button you change to the Record select mode In this mode the Input buttons allow to select the Record IN 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 func tion is activated the Input buttons allow setting th
16. e display shows the value domain red LEDs active and you can adjust the level for input In 1 Values 0 3 6 9 Default O PEGE Display for function Gain IN 1 Value domain activated Gain adjustments are immediately performed so you can check whether the Gain setting is appropriate Security advice Define which signal source has the highest output level Set the gain for this input to O 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 Page 721 25 soulLUtion 5 2 9 5 2 10 Seite natuce of sound et Surround IN The Program Function Surround IN activates the Surround Mode for the selected input SUR ROUMD TH Values IN 1 IN 2 IN 3 IN 4 OFF IH 4 FROGS Display for function Surround IN Default OFF 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 If you have activated the Surround IN function for input IN 4 the display will show as follows Display for activated Surround IN input IN 4 and Surround Max Vol 45 Surround Max Vol The Program Surround Max Vol defines
17. e new value and Enter button confirms the new setting Volume Dim Play Pause 4 PRE mode Pressing the Volume Dim button de activates the Volume Dim function of the preamplifier or the integrated amplifier CD mode The Play Pause button controls the Play Pause function of the CD SACD Players Volume 2 3 The Volume buttons control always the volume of the preamplifier integrated am plifier irrespective of the PRE CD mode of the remote control Mute 9 PRE mode The Mute button controls always the mute function of the pre amplifier integrated amplifier The mute function disconnects the Main Out and the Record Out connectors CD mode no function 30 6 2 6 6 2 7 6 2 8 6 2 9 Preamplifier User Manual n Open Close 11 PRE Mode no function CD mode The Open Close button controls the drawer of the player Prog button 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 PRE button 12 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 CD button 13 Pressing the CD button switches the remote control to CD mode for the control of the CD SACD Playe
18. ground connected Ground Lift O ground disconnected The housing remains grounded independent of the ground lift switch Security advice Please follow the security advices on page 6 Page 721 13 soulLUtion 4 3 5 4 3 6 4 3 7 4 3 8 Seite natuce of sound LINK E The preamplifier 721 controls the start up sequence of connected soulution com ponents through the LINK connection Master Slave principle the preamplifier 721 is always the Master Connect the Master Out 1 or Master Out 2 terminal of your preamplifier 721 with the other soulution components Each soulution component has Next Slave output to connect further soulution appliances DC Out F The ultra stable power supply of the preamplifier 721 is available for external soulu tion components e g external phono preamplifier external DAC etc through the DC OUT connector Security advice Never remove the security cover while your preampli fier 721 is in operation Always switch off your preamplifier 721 before you connect an external device RS232 Interface G The preamplifier 721 can be remote controlled through the RS232 interface All functions can be controlled and relevant information is provided to the controll unit Type label H Please note the serial number of your preamplifier 721 on page 7 of this user man ual This allows you to have the product specific data at hand without removing your preamplifier 721 from t
19. he HiFi rack 14 4 4 4 4 1 Preamplifier User Manual n Front panel of the preamplifier 721 power mute prog e e soulution N J K M L Front panel of the preamplifier 721 Power 1 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 pre amplifier 721 is ready for operation and if no errors are present MUTE F OH Display in operating condition OFF Display in operating condition Display in operating condition ON PROTECT ON We suggest bringing your preamplifier 721 in operating condition OFF while you are not listening to music It may be switched on with the IR remote control Power consumption in operating condition OFF lt 0 5W LINK System In case you have connected other soulution components to the preamplifier 721 with the LINK System it remains in operating condition PROTECT ON until all con nected components are switched on Display LINK Connect Page 721 15 soulLUtion Seite natuce of sound ee If no errors have occurred while switching on the other components the preamplifier 721 changes into operating condition ON Display in operating condition OFF Display after switch on of LINK Display in operating condition ON components DC protection act
20. ive When the preamplifier 721 is switched off all connected LINK components are switched off simultaneously operating condition OFF MUTE OFF Display after switch off of LINK Display in operating condition OFF components If an error occurs within a LINK component while operating the display shows LINK ERROR LIHE ERROR el GH Display for an error within a LINK component Security advice Please follow the security advices on page 6 Unplug your preamplifier 721 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 721 in operating condition OFF 16 4 4 2 4 4 3 4 4 4 4 4 4 1 Preamplifier User Manual n Mute J Mute is a security function which allows you disconnecting all inputs from the out puts in case of an urgency wrong cabling feedback loops etc Mute cuts off the symmetrical as well as the asymmetrical outputs Display MUTE For reducing the volume to a predefined level please use the function Volume Dim Display in operating condition MUTE Prog K The Prog button switches the preamplifier 721 between Operating Mode and Pro gramming Mode In the Programming Mode you may adjust the preamplifier 721 to your individual requirements Volume L The Volume knob controls the functions Volume and Volume Dim V
21. l IN 2 IN 4 Main Out symmetrical Main Out asymmetrical Main Out symmetrical Main Out asymmetrical Preamplifier 721 User Manual n Data 220 240 V 50 60 Hz 100 120 V 50 60 Hz 250 W lt 0 5 W 60 W 9 5 418 5 dB 3 5 412 5 dB DC 1 MHz 400 ns lt 0 0006 max max max 140 dB 105 dB 2 kQ 47 kQ 16 Vrms 100Q 8 Vrms 100Q 1A 20 22 12 V 480x450x167 mm ca 30kg Technical specifications are subject to change without prior notification Page 37 soulLUtion natuce of sound 13 Dimensions 167 mm 4 t 15 mm 80 mm E 360 mm bi P 450 mm ji 467 mm P gt 3 P e e A a 83 mm 397 mm lt 4 gt 480 mm lt gt i u 83 mm 397 mm 480 mm Seite 38 14 Definitions Operating conditions OFF Standby P ON PROTECT ON ON POWER FAIL OVER CURRENT LINK ERROR Labelling SYM XLR Female XLR Male ASYM Preamplifier User Manual n In operating condition OFF only the digital power supply is active Power consumption of lt 0 5Watts As soon as the preamplifier 721 is switched on it changes to the operating condition P ON The audio power supply unit is started and the audio channels are checked for potential er rors When constant operating conditions are reached and no errors are detected the preamplifier 721 changes into operat ing condition ON
22. lay shows the value domain red LEDs active and you can select the desired ID Values 1 2 BSR TL Ue Default 1 PROGI Display for function Remote Ctrl ID Value domain activated The new Remote Control ID will be activated after the Program Mode is left Page 27 soulLUtion 5 2 13 5 2 14 Seite natuce of sound ee If you change the Remote Ctrl ID the preamplifier 721 can only be controlled by the remote control 720 740 after you have switched the Remote Ctrl ID of the remote control 720 740 accordingly Load Default In the case you want to overwrite all your individual settings by the factory default values you select the function Load Default and you confirm with YES The follow ing values will be loaded Start In IN 1 Name IN 1 IN 4 OFF A Start Volume 30 Bandwidth IN 1 IN 4 HIGH YES Dim Volume 20 Gain IN 1 IN 4 0 PREG Max Volume 80 Brightness 3 Display for function Load Default Balance 0 Remote Ctrl ID 1 Value domain activated Security advice Please note your personal settings in the table Individual Settings on page 40 Software Info This function shows you the version of software installed on your preamplifier 28 Preamplifier 721 User Manual ea 6 Remote control The remote control controls all functions of the soulution preamplifiers integrated amplifiers and CD SACD Players You can also access the Program Functions of these pro
23. minimised Power supply The preamplifier 721 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 load dependant deviation of 500 microvolt and a residual ripple lt 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 Gain adjustment Different signal sources typically have unequal output levels Fro minimal volume differences while switching between inputs the preamplifier allows adjusting the gain per input individually This is implemented with an additional amplification stages 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 The input signal is permanently monitored for DC offsets As soon as a DC offset of gt 15 mV is detected a high
24. olume The preamplifier 721 disposes over a volume control range of 80 dB The volume is adjustable in 1 dB steps Display O no signal mute LS 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 Program Function Volume Max When you reach Page 721 17 soulLUtion 4 4 4 2 4 4 5 4 4 5 1 Seite natuce of sound ee the maximal level the display shows for example M 60 The volume can not be fur ther increased by turning the volume knob Volume Dim By pushing the Volume knob the volume is reduced to the predefined level Volume Dim 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 18 Display with active Volume Dim function Input M The Input knob controls the functions Input Select and is used for the program ming Input Select By turning the Input knob you define which input of the preamplifier 721 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 inp
25. quality capacitor is switched into the signal path for op timal protection of the preamplifier 721 The display shows the symbol for the ca pacitor If the DC offset has disappeared for at least 15 seconds the capacitor is Page 721 9 soulLUtion natuce of sound a switched out of the signal path This ensures optimal protection while simultane ously providing a capacitor free signal path offset free signal prerequisite 3 7 Bandwidth limitation 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 Seite 10 4 1 4 2 Preamplifier User Manual n Start of operation and handling of the preamplifier 721 Please take care while installing the preamplifier 721 Follow all security advices Scope of delivery and packing Please check the scope of delivery z preamplifier 721 remote control 720 740 incl batteries 2xAAA mains cable 5 user manual cotton gloves Please store the packing of the preamplifier721 for future transports Check your preamplifier 721 for transport damages In the case it is damaged please contact your soulution dealer Security advice If
26. rs While pressing the buttons of the remote control the blue Leds under the Play Pause button 4 will light up Page 721 31 soulLUtion 6 2 10 6 2 11 Seite 32 natuce of sound ee Power 10 PRE mode CD mode Remote Ctrl ID PRE mode CD mode The Power button defines the operating condition ON or OFF of the preamplifier intzegrated amplifier The Power button defines the operating condition ON or OFF of the CD SACD Player Change the transmitter Remote Ctrl ID of the remote control as follows ID 1 Input button 6 Input button 5 and Power 10 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 ampli fier will not react to the remote control no more The Remote Ctrl ID can not be changed Preamplifier User Manual n Protection functions of the preamplifier 721 Comprehensive protection functions ensure a secure operation and long durability The preamplifier 721 disposes over the following functions Overcurrent For currents gt 1 Ampere at the Main Out the preamplifier 721 shuts down auto matically DC PROTECT Your preamplifier 721 is protec
27. ted against DC offset at the inputs IN 1 IN 4 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 by passed if the DC offset has ceased for at least 15 seconds The display shows the symbol for the capacitor While switching between inputs the capacitor is activated automatically for security reasons This is not a malfunction of your source device Fuse The mains connection has a fuse which protects your preamplifier 721 against too high power consumption The fuse is located within the mains switch on the rear side of the preamplifier 721 Model 220 240 V 50 60Hz 2A T 250V micro fuse 5x20mm Model 100 120 V 50 60Hz 4A T 250V micro fuse 5x20mm Page 721 33 soulLUtion 8 1 Seite 34 natuce of sound ae Trouble shooting Error Action Check the cabling to the mains supply Eventually replace Mey the fuse of your preamplifier 721 Check the cabling to your power amplifier signal sources P and from the power amplifier to your loudspeakers whether No music aa you have selected the correct input the source device is muted and if the power amplifier is switched on If the power supply to the audio channels is interrupted or POWER FAIL an error in the power supply unit has occurred the preampli fier 721 is shut down automatically The display shows POWER FAIL If the current at the Main
28. tion 10 11 Seite 36 natuce of sound em SS Service If your preamplifier 721 needs service please contact your soulution dealer For fur ther information see www soulution audio com Warranty All soulution products are guaranteed against defects in material and workmanship for five years from date of purchase The guarantee is void if the soulution 721 has been subject to misuse or negligence or has been modified repaired or opened by a non authorised person without writ ten authorisation of Spemot AG For the return transport to our premises please use exclusively the original packag ing 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 721 back to us 12 Specifications Specification General Nominal voltage Nominal rating Power consumption Power consumption Line inputs Amplification Frequency response Slew rate THD N Signal to Noise ratio Crosstalk Input impedance Outputs Voltage Current Impedance LINK Out Dimensions Dimensions Weight Model 220 240V Model 100 120V OFF ON IN 1 IN 2 IN 4 symmetrical IN 1 asymmetrical IN 2 IN 4 symmetrical IN 1 asymmetrica
29. ty E close to water Sink bathtub or similar equipment or with any object con taining water residing on top of the product 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 Do not try to repair your preamplifier 721 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 721 z the preamplifier 721 has seen rain the preamplifier 721 seems to malfunction the preamplifier 721 has fallen to the floor or the housing is damaged Serial Nr 721 Please note the serial number of your preamplifier 721 above Page 721 7 soulLUtion 3 1 3 2 3 3 Seite 8 natuce of sound Technical Highlights Layout The preamplifier 721 is realised as asymmetrical dual mono circuit Left and right audio channels each have identical circuit boards Resulting in a channel separation of gt 105 dB prerequisite for a three dimensional spatial reproduction The audio section is physically separated from the power supply units and the digi tal circuits For minimal interference the different sections are shielded against each other Volume control Relays switched high precision metal foil resistors form an 80 steps 1 dB volume control Each channel has its own volume control resistor
30. ut has been selected and the Input knob was not turned for approximately 3 seconds All other inputs remain completely disconnected from the preamplifier 721 Signal and ground are dis connected by top class relays Hum noise originating from even tual equalising currents between connected audio components is thus effectively eliminated Additionally cross talk from inactive inputs to the active input is sup pressed 4 4 5 2 4 4 6 Preamplifier User Manual Display while selecting a new input Display after new input is switched on DC protection deactivated 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 Programming The Input knob is used in the Programming Mode for selecting Program Functions and setting of values for the respective Program Functions Display R receiver N The display shows all relevant information for operating your preamplifier 721 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 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 ob jects in front of the display Never place your preamplifier 721 on the front panel The display glass coul
31. 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 721 switches back to the former volume level Security advice Set the Dim Volume to a moderate level If you ex change a component of your system please check whether the setting still is appro priate Max Volume 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 dis play shows the value domain red LEDs active and you may define the desired vol ume level Values 40 80 MES LIOLUME Default 80 Display for function Max Volume Value domain activated While switching to the value domain of the Program Function Max Volume the pre amplifier 721 will not adjust the volume level for security reasons In the case you limit the volume the control range is reduced accordingly Max Volume 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 22 5 2 5 5 2 6 Preamplifier User Manual n Security advice The settings of the Program Functions Phono Gain and Gain IN 1 IN 6 may provoke an additional 9 dB level difference between the dif ferent inputs Define the Max Volume for
32. wnloads Mains supply Exclusively use 3 phase power cords with ground conductor They may not be crushed by objects Unplug your preamplifier 721 from the mains connection in the following cases before you manipulate with cables E before you clean your preamplifier during thunder storms or before you leave for longer periods Cabling While manipulating with cables the preamplifier 721 has to remain disconnected from the mains Before you disconnect the mains the preamplifier 721 has to be in operating condition OFF Wrong cabling may cause damages to your preamplifier 721 your amplifier or to your loudspeakers Excessive volumes due to inappropriate handling may cause hearing damages 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 6 Preamplifier User Manual n Packing Please keep the original packing for future transports The original packing is opti mal protection against potential damages Operation Never run your preamplifier 721 2 with opened housing with closed cooling slots z with high ambient temperatures gt 40 C close to heat sources like radiators heatings ovens or similar appliances dis sipating heat with extremely high humidity for example in humid cellars or rooms similar humidi
33. your preamplifier 721 is still very cold from the transport please let it warm within the packing in order to omit condensation of water inside your preamplifier 721 Optimal positioning of your preamplifier 721 There are no limitations on where to position your preamplifier 721 We suggest po sitioning the preamplifier 721 so that the connecting cables to the amplifier and the signal sources remain short Security advice The preamplifier 721 has a high quality surface Please be careful during transportation so that the surface does not get scratched Please use the enclosed cotton gloves Never position your preamplifier 721 on the front panel The display glass could get scratched or even burst 721 Page 11 soulLUtion 4 3 4 3 1 Seite natuce of sound ee Rear panel of the preamplifier 721 Rear panel of the preamplifier 721 Mains A Connect the preamplifier 721 with the mains supply The enclosed power cord is optimised for this application After switch on the power supplies of the preamplifier 721 get started The display shows WAIT As soon as constant conditions for the power supplies are reached the preamplifier 721 changes to operating condition OFF red LEDs in display WATT Display after switch in of the mains Display in operating condition OFF Security advice Only switch off the mains connection if your preampli fier 721 is in operating condition OFF 12
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