User´s Manual - Trafomatic Audio
Contents
1. a socket Should you decide to buy replacement tubes from Trafomatic Audio rest assured that they were fully tested before the shipment Only EL84 6BQ5 power tubes can be used Regarding preamplifier tubes the ECC81 can not be replaced with any other ECC tube type ECC82 83 88 No other types of tubes can be used as they may cause damage to the amplifier which is not cov ered by the warranty We do not recommend frequent changes of the tubes as the sockets are sensitive mechanical parts and are rated for relatively small number of insertions Servicing Because of its careful design and high manufactur ing standards your amplifier should normally require only minimal service to maintain its high level of per formance CAUTION Lethal voltages are prvesent inside the amplifier Do not remove the amplifier s bottom cover and do not tamper with components inside the unit even with the power turned off Servicing should be left only to authorized and trained personnel Premise Stereo Integrated Tube Amplifier Technical Specifications Stereo Integrated tube amplifier Class of operation Push Pull class A Triode Ultralinerar mode Tubes complement 8 x EL84 2 x ECC81 Inputs CD Tuner Aux Outputs 4 8 ohms Input sensitivity 0 85Vrms THD 0 25 1W 1KHz Bandwidth 10Hz 1dB 50KHz 3dB S N ratio 88dB Input impedance 100K Power consumption 250VA Input voltage 230V 50Hz 100 120 220 240V ava2. certain the unit is disconnected from the AC outlet and that the tube has cooled down Inspect the tube for cracks and physical damage Make sure that the pins are straight If you need to straighten the pins be very careful as it may cause the glass envelope to break causing the tube to lose the vacuum and ECC81 fail as soon as the amplifier is powered on Carefully align the pins with the socket and gently insert the tube Never force a tube into a socket Should you decide to buy replacement tubes from Trafomatic Audio rest assured that they were fully tested before the shipment Packaging Save all the packaging in a dry place Your amplifier is a precision electronic instrument and should be prop erly packaged any time shipment is made Because of its weight it is highly probable that the unit will be damaged during shipment if repackaged in a box and packing other than that designed for the unit Preparation for Use Place your amplifier on a flat surface Before inserting the tubes inspect them for cracks and physical damage Make sure that the pins are straight If you need to straighten the pins be very careful as that may cause the glass envelope to break causing the tube to lose the vacuum and fail as soon as the amplifier is powered on Refer to the drawing below to locate correct location for each tube Care fully align the pins with the socket and gently insert the tube according to the drawing below Never fo
3. indicated on the marking label If you are not sure of the type of power supply in your home consult your product dealer or local power company 5 Grounding This product is equipped with a three prong IEC con nector Always use power cord with adequate wire cross section and an electrical outlet that is grounded If you do not know whether the outlet is grounded consult your electrician or local power company 6 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked on or pinched Pay particular attention to cords at plugs convenience receptacles and where they exit from the product Always use power cords with adequate current ratings and safety certifications UL CE TUV CSA etc 7T Fuses For continued protection against fire hazard replace fuses with the same type and rating of the fuses specified When changing fuses completely unplug the AC cord from the wall outlet 8 Tubes During operation the tubes get very hot Do not touch the tubes since this may result in a severe burn Allow at least 10 minutes after removing pow er for tubes to cool down before touching them 9 Turn off when not using Turn off the unit as soon as you stop actively using it Unplug the power supply from the wall during a lightning storm or when the product is to be left unat tended and unused for longer periods of time Premise Stereo Integrated Tube Amplifier ENVIRONMENT 1 Wate
4. it warms up over the first 30 minutes of operation you may notice slight improvement in the sound quality 4 At the end of your listening session make sure to turn the amplifier off Leaving it on does nothing for sound quality and it reduces life of the vacuum tubes The amplifier should always be turned on and off via its own power on off switch The amplifier should always be turned on and off via its own power on off switch Premise Stereo Integrated Tube Amplifier Controls and Their Functions Back Panel Power Switch Press the power switch to l turn the power on Within 10 20 seconds as the heaters reach operating temperature the tubes will begin to glow a soft orange light Press the power switch to 0 to turn the unit off As the heaters cool off the orange glow will slowly dis appear It is normal for a vacuum tube equipment to run warm if used for prolonged periods Tubes are operating at much higher tempera ture and should not be touched for at least ten minutes after the unit is turned off to pre vent burns Always place your amplifier away from chil dren and pets to prevent burns Audio signal connection jacks Use these jacks to connect the audio interconnects from your components to the amplifier Speaker terminals Your amplifier has two out put channels the Right Output and the Left Out put Each output channel is designed to handle one speaker Follow the instructions outlined in the Opera
5. MAINTENANCE 1 Cleaning Unplug this product from the wall outlet before clean ing Do not use liquid cleaners or aerosol cleaners Use a dry cloth for cleaning Do not use any type of abrasive pad scouring powder or solvent such as al cohol or benzene 2 Tube replacement Electron tubes have their life in the 2000 3000 hrs range We strongly recommend replacing the output tubes at 20 30 months interval depending on your listening habits and signal tubes at every other pow er tube replacement after 24 36 months This will ensure that the amplifier always performs at its best and tube failure will not overstress other parts 3 Biasing the amplifier The Premise amplifier uses tubes in self biasing con figuration and does not require any adjustments The only requirement is to ensure that matched tubes are used in both channels Matched tubes are available from multiple vendors as well as directly from Trafo matic Audio SERVICE 1 Replacement Parts When replacement parts are required be sure that the service technician uses replacement parts speci fied by the manufacturer or parts with the same char acteristics as the original part Unauthorized sub stitutions may result in fire electric shock or other hazards 2 Tube Replacement Should it become necessary to replace your tubes remove the AC power plug from the wall and allow thirty minutes for the high voltage capacitors to dis charge Follow instructions ou
6. Trafomatic Audio Premise Stereo Integrated fube Amplifier User s Manual 5 i BLEMEO IMLLEGBVIED INBE VINbUIEEH 2515 v 8Izc vx AOMNWE E 1nMEH g k co ILSLDLUSFIC vrigio www trafomaticaudio com rev 1 Table of Contents Section Safety Precautions Getting Started About Your Amplifier Construction and Testing Packaging Unpacking Accessories Preparation for Use Operating Procedures Controls and Their Functions Vacuum Tube Layout Tube Replacement Servicing Technical Specifications Premise Stereo Integrated Tube Amplifier Page No 3 4 e Co OOO O 40 O OO A OI Premise Stereo Integrated Tube Amplifier SAFETY PRECAUTIONS IMPORTANT SAFEGUARDS PLEASE READ CAREFULLY ALL THE FOLLOWING IMPORTANT SAFEGUARDS THAT ARE APPLICABLE TO YOUR EQUIPMENT CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE SCREWS NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL SAFETY 1 Read the User s Manual and refer to it frequently during use of this product All the safety and operating instructions should be read before the product is operated 2 Retain the User s Manual The safety and operating instructions should be re tained for future reference 3 Follow Instructions All operating and instructions for use should be close ly followed 4 Power Sources This product should be operated using only the type of power source
7. ilable on request Size 430 x 2900 x 1900mm Weight 22kg BLEMEO IWLECHY LED 108 VIWbIHEN BLE EVVVI2ZE N w AOFTINE m 1nud tomen LSLowsric vrigio S nl Irafamatic ANGID je imi Ag me E Trafomatic Audio Trafomatic Ltd Andije Habusa 15 11400 Mladenovac Serbia www trafomatic com Trafomatic Audio is a registered trademark of the Trafomatic LTD Copyright 2007 2012 by Trafomatic All rights reserved
8. r and Moisture Do not use this product near water i e near a bath tub ash bowl kitchen sink or laundry tub in a wet basement or near a swimming pool or the like Damp basements should be avoided 2 Heat The product should be situated away from heat sourc es such as radiators heat registers stoves or other appliances that produce heat Also avoid putting the unit in the direct rays of the sun 3 For indoor use only PLACEMENT 1 Accessibility It is normal for a vacuum tube power amplifier to run warm if used for prolonged periods Tubes are very hot when operating and should not be touched for at least ten minutes after the unit is turned off to pre vent burns Always place your amplifier away from children and pets to prevent burns 2 Ventilation This product should not be placed in a built in installa tion or rack unless proper ventilation is provided or the manufacturer s instructions have been followed Never place anything on top your amplifier that could obstruct the airflow and cause the electron tubes to overheat and damage the amplifier Do not place your amplifier in a closed bookcase overheating could oc cur Ensure that there is at least 8 200mm of open space above the amplifier 3 Surface Place the unit on a flat level surface Care should be taken to prevent objects from falling and liquids from spilling into the unit Do not subject the unit to exces sive smoke dust vibration or shock
9. rce a tube into a socket O E l A 5 m E 2 2 gt T v z ECC81 Figure 1 Premise tube layout Never use excessive force when inserting the tubes into their socket Premise Stereo Integrated Tube Amplifier Operating Procedure 1 Make sure that you read instructions before attempting to operate your unit Figure 2 Premise amplifier Front panel 2 Attach the audio sources and speakers refer to the picture below Never run the amplifier without speakers connected since that may damage the transformers Speaker s minus terminal should be connected to the speaker terminal marked as zero 0 and positive termi nal should be connected to the terminal that corresponds to the speaker s nominal impedance 4 or 8 ohms The amplifier is optimized for these impedances Higher or lower impedance will result in higher distortion or loss of power Do not use a speaker with impedance lower than 2 ohms on either of the outputs Make sure to prevent short circuit at the amplifier s speaker terminals as that will damage the amplifier Figure 3 Premise amplifier speakers connection NOTE 4 ohms and 8 ohms speakers cannot be connected to the speaker terminals at the same time Make sure your amplifier is properly connected to a high current power receptacle 3 WARNING Always take care volume control is in the proper position The amplifier will be fully functional after only a couple of minutes However as
10. ting Procedure for the correct speaker connections Premise Stereo Integrated Tube Amplifier TUBE REPLACEMENT Your Premise Integrated amplifier s conservative design maximizes life of the tubes You can expect that your EL84 6BQ5 tubes will last in excess of 3000 while the ECC81 preamplifiver tubes should last approximately 4000 hrs Lacking the accurate time measurement we strong ly recommend replacing the output tubes at 20 30 months interval depending on your listening habits and signal tubes at every other power tube replace ment every 24 36 months This will ensure that the amplifier always performs at its best and tube failure will not overstress other parts Before you start replacement you should make cer tain that the unit is turned off and disconnected from the AC outlet and that the tubes have cooled down Allow sufficient time minimum 30 minutes for tubes to cool down and internal capacitors to discharge Before inserting a new tube inspect the tube for cracks and physical damage Make sure that the pins are straight If you need to straighten the pins be very careful as it may cause the glass envelope to break causing the tube to lose the vacuum and fail as soon as the amplifier is pow ered on possibly damaging the amplifier as well Also make sure to inspect the tube sockets for cracks and pin inserts Carefully align the pins with the sock et and gently insert the new tube Never force a tube into
11. tlined in this manual 3 Modifications Modifications to the amplifier are strongly discour aged The unit was designed by experienced engi neers and tested for safe and reliable operation Any modification may pose a safety problem and result in reduced lifetime of the product Any removal of the cover will void warranty Premise Stereo Integrated Tube Amplifier Getting Started About Stereo Tube Amplifier Your Premise Integrated amplifier was designed to provide a significant value based on a high perform ance to price ratio that will exceed the sonic quality of good solid state amplifiers with its musical accuracy The Premise Integrated amplifier uses four EL84 6BQ5 output tubes per channel driven from an two ECC81 The Premise Integrated amplifier is designed to work in a Push Pull class A Triode Ultra linerar mode Parts are carefully chosen for the op timum sound quality and the overall circuit layout is maximized for sonic purity Handling Vacuum Tubes Many people have never had experience handling vacuum tubes Process is very similar to handling incandescent light bulbs As with light bulbs you should not touch a vacuum tube when it is operat ing since you can burn yourself Similarly if a tube is dropped on a hard surface it will break When replac ing the tubes allow sufficient time minimum 30 min utes for tubes to cool down and internal capacitors to discharge Before you insert a tube you should make
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