USER MANUAL
Contents
1. TECHNICAL SPECIFICATIONS PROJECT 24 u Pagina B Congratulations with your purchase of the Sphinx Project Twenty four or Twenty six You are now part of an ever increasing group of quality conscious audiophiles using Sphinx products We are very proud of the tradition connected to the SPHINX name especially concerning audio quality perfection This manual will help you to gain a maximum amount of pleasure and quality from your new Sphinx Project Twenty six or Project Twenty four high power amp The Project Twenty six is even for Sphinx a very exceptional mono power amplifier it weighs 45 kilogram and is capable of an effortless 800 W into 2 ohm and 1400 W into 0 5 ohm or over 60 A into 0 3 ohm while keeping any sort and size of loudspeaker under complete control The power supply will absolutely prevent any interference noise hum etc from reaching the audio circuits have an unconditionally stable voltage disregarding the load guarantee a frequency independent output impedance up to at least 200 kHz be able to supply current into load impedances almost equalling 0 ohm and guarantee maximum reliability and safety while working with these very high output powers The amplification is handled by patented audio circuits with a linear power bandwidth of over 4 MHz The input has a RF filter narrowing the overall bandwidth to around 200 kHz to prevent unwanted radio2. USER MANUAL PROJECT TWENTY SIX MONO HIGH POWER ANPLIFIER PROJECT TWENTY FOUR TRUE DUAL MONO HIGH POWER ANPLIFIER 1 UNPAGKINQG u 2 SPHINX WARRANTY CARD U u u uu u u 3 THE POWER AMP AT A GLANCE Pront panele a an a G a m G eE a atsita olal PR E E E E Ee E I 4 INSTALLATION AND CONNECTIONS l Installati n nen e aha Tane Connections im general panka aaa aR EEE gu aS aa u Sau Connecting the inputs u E dy cates tec TAE Balanced nine umasa sa mua au a phu mika mua muta asum s Unpnbalanecedua G u n S S um L D DL E Sl l mu Connecting the optical cables a Connecting the mains power cable S OPERATION aa POWER a a a ah es dc ads Warnings Aeae date anat qanqa ed eee uns Sines Nine ara i agi A See eA ee AND MAINTENANCE U TECHNICAL SPECIFICATIONS PROJECT 26 u u uu u
3. LEFT OUTPUT To connect the cable from the left loudspeaker red white RIGHT OUTPUT To connect the cable from the right loudspeaker 24 only red white POWER This is the mains power master switch MAINS Connect the power amp with the cord to a mains outlet 230 240 VAC The mains fuse is placed behind the cover Manufacturer s label Here you ll find important data of this component such as serial number and mains voltage to be used 4 INSTALLATION AND CONNECTIONS Installation Attention The power amp weighs more than 45 kg So make sure you place the Project Twenty six or Twenty four on a stable and sturdy support Never stack two power amps on top of each other The Project Twenty six or Twenty four will become warm so correct placement is critical Do not position it on top of or close to other heat radiating equipment Such as other power amps or in direct sunlight Please ensure the unrestricted ventilation around the component If you need to use the amp in a closed cabinet or on a bookshelf you absolutely provide unrestricted ventilation around the component To prevent any possible interference keep power supply cables away from all audio cables If all these conditions will be met the Project Twenty six or Twenty four shall perform to the extremely high standards it is designed for Connections in general Before you start connecting equipment it always is wi
4. 200 000 Hz after RF input filter lt 1 0 20 000 Hz 28 dB max gt 200 W into 8 ohm 23 0 dBW THD lt 0 01 gt 400 W into 4 ohm 26 0 dBW THD lt 0 01 gt 800 W into 2 ohm 29 0 dB W THD lt 0 015 gt 1200 W into 1 ohm 30 8 dBW THD lt 0 025 gt 1400 W into 0 5 ohm 31 5 dBW THD lt 0 05 42 V 60 into 0 3 ohm lt 0 009 200 W into 8 ohm 1 20 000 Hz lt 0 01 gt 122 dB gt 50 V us unbalanced gt 100 V us balanced gt 500 1 20 000 Hz unbalanced balanced 1 5 V 3 5 dBV 1 5 V 3 5 dBV 20 kohm 600 ohm 88 000 total 4000 W max 30 W standby 2400 W for loads between 1 and 8 ohm 190 x 482 x 620 mm 45 kg 5 year gt 2x 200 W into 8 ohm 23 0 dBW THD lt 0 05 gt 2x 400 W into 4 ohm 26 0 dBW THD lt 0 05 gt 2x 600 W into 2 ohm 27 7 dB W THD lt 0 05 gt 2x 600 W into 1 ohm 27 7 dB W THD lt 0 05 42 V 27 A into 0 8 ohm lt 0 003 1 W into 8 ohm 1 20 000 Hz lt 0 005 gt 118 dB gt 250 0 20 000 Hz 2500 W max 70 W standby This unit conforms to the EMC interference regulations from the EU and to the CE standards This unit complies with safety regulation VDE 0860 and thus with international safety regulation IEC 65 Technical specifications can be changed by SPHINX without prior notice if technical developments make this necessaly 1996 Audioscript BV Pagina
5. of exactly the same type and rating 5x20 mm 250 VAC 6 A slow Project 26 250 VAC 6 A slow Project 24 The fuse sits behind the cover in the mains connector 13 Never use a fuse of a different rating this could lead to serious damage and may cause fire Pagina H CARE AND MAINTENANCE Clean the exterior with soft lint free anti static cloth Do not use force while wiping the surface To remove difficult stains use a few drops of detergent on a moist cloth sweep carefully and wipe dry afterwards TECHNICAL SPECIFICATIONS PROJECT 26 If some scratching might occur please first consult your Sphinx dealer He can give you advice about possible solutions Do not use polishing or cleaning agents they may damage the sensitive acrylic finish Do not use aerosol cleaning agents Most contain solvents which might actively react and damage the acrylic finish Bandwidth Phase response error Gain Minimum P ower Output 0 20 000 Hz Output voltage current max THD N IMD S N ratio IHF A Slew rate Damping factor Input level nominal impedance Supply capacitance Power consumption Dimensions h x w x d Weight Warranty TECHNICAL SPECIFICATIONS PROJECT 24 only when different from Project 26 Minimum P ower Output 1 20 000 Hz Output voltage current max THD N IMD S N ratio IHF A Damping factor Power consumption 0 4 MHz 0 3 dB 0
6. drastically decreases the temperature and power consumption On top of that it significantly increases the life span of the component The power amp also warms up more speedily so you will be able to enjoy it s maximum performance without significant delay When the CONTROL OUT of the Project Twenty six or Twenty four has been connected to the CONTROL IN of another Sphinx component which most likely will be another power amp this component will be selected to stand by by the Project Twenty six Twenty four s stand by mode Ensure proper connection of the optical cables from CONTROL OUT to CONTROL IN otherwise the LED 1 on the front panel may remain green although the stand by mode is activated If the Project Twenty six or Twenty four is placed in strong direct sunlight the stand by mode might be self activated In that case you should place the supplied dummy connector in the CONTROL IN 9 jack but only if this is not being used We strongly recommend against placing the component in direct sunlight though Connecting the mains power cable Before you connect the cable please check whether the mains voltage indicated on the manufacturers label on the rear panel is the same as your local mains voltage If not please contact your dealer and do not connect the component to the mains Connect the mains cable after you have connected all other components in the system and have double checked all connections Pagi
7. interference being amplified The Project Twenty four is even more special it features two separate power amps with the same high specs as the unique mono Twenty six using the same chassis and power supply It also weighs 45 kg but delivers an effortless 2x600 W into 2 ohm and into 1 ohm while keeping all sorts and sizes of loudspeaker loads completely under control To obtain the maximum quality from this power amp it is necessary to use it with top quality audio components So preferably use it with other Sphinx components Please read this manual carefully before you install or use this high power amp It is important to familiarise yourself with the special functions operation and possibilities of the Sphinx Twenty six or Twenty four Your local dealer will be able to answer any questions concerning other Sphinx audio components 1 UNPACKING Before leaving the factory every Project Twenty six or Twenty four is subjected to stringent and extensive technical and exterior quality inspections This ensures you will enjoy many years of high quality audio from a perfect looking product Attention The power amp weighs over 45 kg Never lift it out of the carton without someone helping you After unpacking your Project Twenty six or Twenty four we therefore recommend you carefully check it for any transport damage In case of damage please contact your Sphinx dealer immediately and retain all packing materials for po
8. itch 12 Because in stand by mode the Project Twenty six or Twenty four s power consumption is still around the 70 W mark Warnings 1 Never put two amps on top of each other 2 The component should not be subjected to moisture of fluids 3 Do not touch the component and the loudspeaker outputs in particular with moist hands this powerful amp can output voltages in excess of 36 volt 4 Before removing the top panel you should disconnect the mains cable and wait at least 30 minutes because the power supply remains at the maximum voltage for a long time Removing the top panel does void your warranty though the panel should therefore only be removed by an official Sphinx service engineer 5 Before disconnecting a loudspeaker or audio cable please switch of the component with the POWER switch 12 6 An AC extension cord should never be used wholly or partly coiled this poses a severe fire risk If you encounter problems If after power on the protection circuits detect something wrong the Project Twenty six or Twenty four will immediately switch to stand by the LED indication will be red In almost all occurrences the problem has to do with the loudspeaker cables Check every single one and solve the problem If you can t find the problem or the cause is definitely not the cables please contact your Sphinx dealer Should for some reason the mains fuse be destroyed you should replace it with a new one
9. na G 5 OPERATION Connect the mains cable of the Project Twenty six or Twenty four to a mains outlet Only after you have connected all other components you may switch the Project Twenty six or Twenty four on with the POWER switch 12 on the rear panel The LED on the front panel will blink green red for about one minute after which it remains green From now on you should switch the power amp on and off with the STANDBY button of another Sphinx component connected to the optical CON TROL IN jack usually the pre amp This way all circuits will remain at working temperature and the audio quality will be 100 within 30 minutes after activating On top of that it considerably increases the life span of the component The Project Twenty six or Twenty four is in stand by mode and the LED 1 shows a red indication Power On You switch the Project Twenty six or Twenty four on with the STANDBY button of the other Sphinx component the LED becomes green If you activate the power amp for the first time or after a long period of non use with the power off the amp will be at maximum performance after one hour From stand by mode it only takes around 30 minutes Power off You switch the Project Twenty six or Twenty four off stand by with the STANDBY button of the other component Only if you will not be using the amp for a long period e g during holidays we recommend switching the amp off with the P OWE R sw
10. se to check whether all mains power cables of all components are disconnected from the mains outlets This will prevent any damage to the loudspeakers and amplifiers caused by incorrect wiring or settings Always use loudspeaker and audio cables and connectors of the highest quality Siltech cable is used throughout internally so we recommend using this same cable for all external connections If you have the choice between longer loudspeaker cables or longer audio cables choose the latter cables between preamp and power amp will cause the least signal quality loss Connecting loudspeakers We recommend using a double pair of cables if this is possible with the loudspeakers used one pair for the highs and another for the lows In most cases you will hear a substantial improvement in the sound quality but be careful to prevent shorted connections Your dealer can recommend the best cables and connection methods Connect the red RIGHT OUTPUT terminal 11 to the red or terminal of the right loudspeaker Connect the black RIGHT OUTPUT terminal 11 to the black or terminal of the right loudspeaker Connect the left loudspeaker in the same way to the LEFT OUTPUT terminals 10 When using unterminated cables please check carefully if there are no loose ends cause a short between the and the of the terminals on amp and loudspeakers Connecting the inputs Make sure you connect L and R properly Mos
11. ssible proof of damage and possible claims Even if the component is in perfect condition you still should keep the packing materials If you need to transport your Project Twenty six or Twenty four at a later time it will be best protected by the original packing materials 2 SPHINX WARRANTY CARD Please takes this opportunity to fill out the enclosed warranty card now Follow the instructions on the card or consult your dealer Please send the card as soon as possible to the return address within 14 days after purchase Pagina C SPHINX Project Twenty six 3 THE POWER AT A GLANCE Front panel 1 LED Indicates the selected function stand by red on green Pagina D Rear panel CINCH LEFT To connect the cinch cable from the left output of the signal source CINCH RIGHT To connect the cinch cable from the right output of the signal source 24 only BALANCED LEFT To connect the XLR cable balanced cable from the left output of the signal source BALANCED RIGHT To connect the XLR cable balanced cable from the right output of the signal source 24 only CINCH BALANCED INPUT With this switch you may select between the inputs up unbalanced 3 and 4 down balanced 5 and 6 e CONTROL OUT To connect the optical cable to another Sphinx component like a power amp CONTROL IN To connect the optical cable coming from another Sphinx component like a pre amp
12. t cinch cables use Red for the Right channel and White or Black for Left All cinch connectors on the Project Twenty six or Twenty four s rear panel have a red centre for the right channel and a white one for the left channel The XLR connectors are marked BALANCED RIGHT and LEFT When making the connections please refer to the descriptions for parts 3 up to 13 on page 5 The Project Twenty six or Twenty four has two input types Balanced To the BALANCED LEFT and RIGHT 600 inputs you connect the corresponding outputs from the pre amp Unbalanced The unbalanced inputs CINCH LEFT and CINCH RIGHT 20 kQ can be used for any unbalanced line level signal like from a pre amp Use only one type of input The switch 7 on the rear panel lets you select between the type of inputs Note Do not place a so called shorting connector in the unused input Pagina F Connecting the optical cables The Project Twenty six or Twenty four has optical jack connectors for CONTROL IN and CONTROL OUT When the CONTROL IN of the Project Twenty six or Twenty four has been connected to the CONTROL OUT of another Sphinx component e g a pre amp you don t have to switch the Project Twenty six or Twenty four with the POWER switch 12 The power amp will automatically select Stand by mode as soon as the other component is set to stand by In stand by mode the bias current of the power amp is set to a lower level which
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