starlight 1 manual 9..
Contents
1. 6N27P ECC86 Verified Opamp options and info Several opamp options outside of the Y default 4562 s can be used To the right is 4 a list of opamps verified to work in dual NMJ4556 quad configurations in Project Starlight OPA2132 OPA2134 If running a pair of opamps 1 per OPA2227 channel only use the inner sockets Example of quad opamps installed NE5532 IC1 2 and IC1 3 A pair of opamps can be run VS quads to keep costs lower when rolling or trying new types quads increase output power Thank you for purchasing the Project Starlight Headphone Amplifier Kit This kit requires minimal electronics and soldering knowledge The layout is easy to follow and setup is a snap Please make sure to follow the instructions outlined in this guide and you will be enjoying your amp in no time First lets go over the tools and items required for your build which are as follows Required Assembly Tools Soldering iron 25W minimum Variable temp soldering station preferred with 1 5 2mm wide chisel tip 032 diameter 60 40 or 63 37 Tin Lead solder is recommended Lead free is difficult to work with and not recommended Magnifying glass recommended but not required Rubber Gloves recommended but not required 9M Green or Red Scotch Brite recommended but not required 3 32 Allen Key 5 64 Allen Key Flush cuts 9096 Isopropyl alcohol recommended but not required Paper Towels recommended but2. USER MANUAL SEPTEMBER 25 72014 WWW GARAGE1217 COM Q LfIdNI Q 2 ea HIGH JP3 2 else 7 6 R14 PROJECT STARLICHT 1 0 R13 04 e e 06000 a 6000 x 44 x S G 915 amp e e x 2 OFF 2 2 e e P e eise e 1210 0 o 9 WARNING Although Project Starlight runs at a generally safe 24VDC Injury from improper assembly is quite possible The main danger comes from installing the polarized capacitors backwards as they can only be installed in one direction much like a battery more detail on capacitor installation comes later in this manual If a capacitor is installed backwards it may burst resulting in burns or eye injury If you are not experienced in electronics or electronic kit assembly it would be wise to have an experienced electronics person review your work before powering the unit on Upon first power up wear eye protection and be wary of any burning smells or electrical noises such as loud pops or buzzes If you followed this installation guide properly and all components are in their proper places and were installed in their proper orientation you will soon be enjoying your amplifier 1217 IS NOT RESPONSIBLE OR LIABLE FOR INJURY PROPERTY LOSS OR DAMAGE AS THE RESULT OF ASSEMBLY OR USE OF THIS DO IT YOURSELF
3. KIT STARLIGHT IS CONSIDERED A HOBBY LEVEL PRODUCT IT CONTAINS NO ELECTRICAL CERTIFICATIONS AND IS NOT ADVERTISED AS SUCH USE AT YOUR OWN RISK 2 Project Starlight Specifications Opamp output stage Power consumption 7 2W peak Power supply 24VDC 0 3A peak Input Resistance 30 Input Sensitivity 6N23 270mV dependent on tube Gain 16dB dependent on tube Max Output voltage no load 7Vrms at 1200 Output Resistance Selectable 2 5 700 Frequency Response 15Hz 80 KHz 0 5dB with 320 load Frequency Response 4Hz 230 KHz 3dB with 320 load Signal to Noise ratio 91dBA dependent on tube Crosstalk 87dB dependent on tube THD gt 0 015 dependent on tube Suitable for 16 3000 Headphones Tubes Valves that can be used in Project Starlight eV TUBES 12V TUBES 12V TUBES CONTINUED 6922 5751 E181CC 7 308 5814 E183CC 8223 5814A E283CC 6AQ8 5963 E811CC 6DJ8 6189 E812CC 6GU7 6201 E813CC 6CG7 6681 E2157 6BQ7A 7025 E2163 6H23 7058 E2164 6H23N 7729 ECC81 6L12 6L13 82 6 11 12AD7 ECC83 6N23 12 7 ECC181 6N2P 12AU7 ECC182 6N6P 12AX7 ECC182 6N30P 12BH7 A ECC801 B719 12DF7 ECC803 Cca 12DM7 8035 CV2492 12DT7 CV2493 A2900 CV5358 E88CC 89 188 189 288 85 88 89 188 152 B309 B329 B339 B749 CV0455 CV0491 CV0492 CV4024 E81CC ECC189 E82CC ECC288 E83CC ECC289 JAN 7308 6GM8
4. not required Digital Multi Meter DMM or DVOM Before You Start Soldering Prep work needs to be done Wash your hands thoroughly and dry Put on the recommended rubber gloves and scrub down the PCB circuit board on both the front and back side with 9096 isopropyl alcohol to clean any residuals off of the board from manufacturing Once the board has been cleaned set it on a dry paper towel out of the way Try to use the rubber gloves during the entire assembly process to keep oils off of the board and solder joints Proper soldering is key to a quality final product If you are new to soldering here are some basic guidelines to follow It would be wise to buy a copper project board and a few cheap resistors or other components to practice with before starting this project Soldering and Solder Joints For best results and maximum conductivity of any component Wipe each lead down using Scotch Bright Only one or two passes are required making sure all of the surface has been cleaned This removes oxidation or any other build up on the metal that has accumulated over time Once cleaned it is a good idea the further clean the wire leads with 9096 isopropyl alcohol Make sure all alcohol has evaporated prior to soldering as alcohol is VERY FLAMMABLE Do not use to much or to little solder on each joint See images below to get an idea of what you should be looking for idea is to heat the pad and the component wire lead quickly an
5. 2 Transistors Q1 BC546B X2 Q2 BC560B X 3 Inductor 1 100UH X 1 Regulators IC1 1 LM4562 X 1 IC1 2 2 LM4562 X 1 IC1 3 2 LM4562 X 1 IC1 4 2 LM4562 X 1 IC2 DC DC X1 Jacks J1 HEADPHONE JACK X 1 TUBE SOCKET X 1 J3 BLACK RCA JACK X 1 J4 RED RCA JACK X 1 J5 POWER INPUT JACK X 1 Jumpers JP1 2 EXTENDED 3 PIN X 3 JP2 3 PIN STRAIGHT X 1 JP3 2 4 PIN RA X 1 Switches SW1 POWER SWITCH X 1 Fuse F1 2A FUSE Potentiometers Trimmers P1 10K VOLUME POTENTIOMETER P2 50K 25T VERTICAL TRIMMER X 2 Relay U1 24V RELAY Misc VOLUME KNOB CHASSIS HARDWARE KIT UPPER AND LOWER CHASSIS JUMPERS X5
6. FE DISTANCE IN CASE OF A MISTAKE IN ASSEMBLY _ eg ONCE THE AMPLIFIERS FUNCTIONALITY HAS BEEN TESTED AND THE UNIT HAS THREADED SPACER HAD A CHANCE TO FULLY WARM UP FOR 4 40 BUTTON CAP SCREW 30 MINUTES SET THE BIAS AS GRAY ACRYLIC BOTTOM DESCRIBED LATER IN THIS MANUAL BEFORE PLACING THE TOP CLEAR ACRYLIC COVER IN PLACE eco qO Bo cO Puozect Starlight STEP 1 POPULATE ALL SMALL COMPONENTS ON THE BOARD SUCH AS RESISTORS RIGHT ANGLE JUMPERS DIODES AND SMALL CAPACITORS THROUGHOUT YOUR BUILD ALWAYS INSTALL THE SMALLER PARTS FIRST WORKING YOUR WAY UP TO THE LARGER COMPONENTS PAY CLOSE ATTENTION TO THE GRAY BAND ON EACH DIODE AS THEY ARE FLAT SPOT OR THE DIRECTIONAL SHORT LEAD ON RED LED INDICATES NEGATIVE SIDE OF LED MUST FACE EXACTLY AS SHOWN FLAT SPOT OR THE SHORT LEAD ON RED LED INDICATES NEGATIVE SIDE OF LED MUST FACE TUBE SOCKET AS SHOWN INSTALL LED COLOR OF YOUR CHOICE HERE CHOSEN AT TIME OF PURCHASE O 41 ommo s eee 4 oo o eee 5 2 1 Pi m 7 ehe lt gt MERI Ie T IDE e PAY CLOSE ATTENTION TO THE BLACK BAND ON EACH OF THESE FOUR DIODES AS THEY ARE DIRECTIONAL Puozect Starlight STEP 2 POPULATE ALL MID SIZE COMPONENTS SUCH AS RCA S 2 POWER COMPONENTS SMALL CAPACITORS TUBE SOCKET DESIGNA
7. RE 6v OR THE 12v SIDE EXAMPLE OF 6V SETTING IN RED TO NOTE IF INDOUBT SET THE AMP TO 12V IF ONLY ONE CHANNEL WORKS CHANGE IT TO THE 6V SETTING YOU CANNOT DESTROY A TUBE IF SET TO THE WRONG VOLTAGE 6 Y 5 Gi A 4 4 E d e 04 0 a o o 6000 B x G x x e o 000o THIS JUMPER ALLOWS THE LED UNDER THE TUBE TO BE TURNED ON OR OFF EXAMPLE OF LED TURNED ON e _ e OUTPUT RESISTANCE IS CONFIGURABLE BETWEEN 1 50HM LOW R AND 68 HIGH R HIGHER OUTPUT IMPEDANCE WILL HAVE AN EFFECT ON BASS AND TREBLE FREQUENCIES WHICH IS ALSO DEPENDANT ON YOUR HEADPHONE IMPEDANCE CHANGE THE SETTINGS TO BEST SUIT YOUR DESIRED LISTENING EXPERIENCE EXAMPLE OF 1 5 SETTING IN RED Puozgect Starlight Resistors 470K X 1 R2 10K X 1 R3 220K X 1 R4 34H X 1 R5 4K7 X 1 68R X2 R7 30K X2 R8 2K2 X 2 H9 220R X 1 R10 4 75R X 8 R11 100K X2 R12 1K X2 R13 100R X 2 R14 2K2 X 2 R15 12K X 1 R16 5 1K X 1 R17 1KX 1 R18 5 1K X 1 Diodes Z1 BZX79 C22 X 1 Z2 BZX79 C18 X 1 D1 1N4148 X2 D2 3MM LED YOU CHOOSE COLOR X 1 D3 RED LED X3 D4 SB240 X 2 Capacitors C1 47uF 50V X 1 C2 47pF X2 2200uF 35V X 2 C4 1uF X2 C5 470uF 10V X2 C6 100uF 10V X 1 C7 100nF X 8 C8 100uF 10V X 1 C9 22uF 35V X 1 C10 10uF 50V x2 C11 330uF 100V x
8. TING POLARITY INSTALL THIS STRIPE FACING THE RELAY TRIMMERS AND SO FORTH 2 FLAT SPOT ON THE CAPACITOR OUTLINE ON THE BOARD PLEASE NOTE CENTER x E PIN OF DC SOCKET IS INCORRECT POSITIVE 24 x HIGH JP3 915579 65 s 6 ome PROJECT STARLICHT R1 0 INPUT CAPACITORS ARE BIPOLAR MEANING THEY HAVE NO STRIPE AND CAN BE INSTALLED IN EITHER DIRECTION VOLPOT GROUNDING GROUNDING THE VOLUME POTENTIOMETER IS REQUIRED AS WITHOUT IT THE AMPLIFIER MAY BE SUBJECTED TO NOISE INTERFERENCE THE IMAGES ARE OF THE PREVIOUS GENERATION SUNRISE HOWEVER THE GROUNDING PRINCIPAL IS EXACTLY THE SAME FIRST INSERT A WIRE LEAD INTO THE RIGHT SIDE VIA NEXT TO THE VOLPOT AND SOLDER IN PLACE WRAP THE WIRE LEAD AROUND THE THREADED PORTION OF THE VOLPOT AS SHOWN PUT ON WASHER AND NUT INCLUDED IN THE KIT ONCE TIGHT THE VOLUME KNOB MAY BE INSTALLED Puozect Starlight STEP 3 POPULATE ALL LARGE SIZE COMPONENTS SUCH AS LARGE CAPACITORS AND EXTENDED JUMPERS e PROJECT STARLICHT R1 0 e USE THE EXTENDED P2 9 3 HEADERS THESE LOCATIONS DO NOT USE A SHORT 3 PIN HEADER Puozect Starlight COMPLETED STARLIGHT LAYOUT AND PHOTO d AAA ALAC i d __ Project Starlight Easy Set Bias Adjustment Easy set bias makes adj
9. d efficiently so that solder flows to each equally Wetting the tip of your iron with a very small amount of solder will aid in quickly heating up the pad and wire lead Having to heat the component for long periods of time especially capacitors is not a good thing When soldering capacitors heat them only long enough to ensure a quality joint and let the unit cool down for a few minutes before soldering the other side especially on small capacitors The solder joint should look bright and metallic A dull or dark gray looking joint is referred to as a cold solder joint Cold solder joints may not pose a problem initially but can show up later in the amps life After every solder joint make sure to clean the flux off your soldering iron tip with a wet sponge that should be provided with your soldering iron kit CUTAWAY OF A VIA AND SOLDER PAD PROPER SOLDER JOINT IMPROPER SOLDER JOINT PRIOR TO SOLDERING Solder is bright and shiny It is curved Alarge blob of solder often dull in color is smoothly starting at the edge of the solder not desired The solder may not flow into pad until it reaches the lead from the the via hole and cause a poor connection component or failure later in the amplifiers life Solder should fill the via and flow through the board slightly It is ok to add solder to the top side of the board however it is not required VIA HOLES TOP OF PCB TOP OF PCB PCB CUTAWAY _ Starligh
10. ect Starlight may create noise that is audible when listening to music generally clicks or digital noises Amplifiers with exposed visible tubes are susceptible to these types of noises Clean your Project Starlight with a microfiber cloth and plastic cleaner dusting with a microfiber cloth is generally all that is required Compressed air is also great option for dust Project Starlight can supply 1A of heater current to the chosen tube ensuring even the hardest to power tubes such as a 6n6p or 6n30p can be used Hot swapping tubes is not recommended swapping tubes while the amplifier is on Even though it does not cause technical errors or malfunctions it could damage headphones rated for 1W or less Starlight Bottom Chassis Prep Final Chassis Assembly AN ASSEMBLE EACH OF THE 4 RUBBER FEET AS ONCE THE PCB HAS BEEN ASSEMBLED III SHOWN ATTACHING EACH TO THE GRAY SET IT FOUR THREADS SMOKED ACRYLIC BOTTOM CHASSIS STICKING OUT OF THE BOTTOM GRAY ACRYLIC CHASSIS THAT YOU PREVIOUSLY ASSEMBLED III ALLEN BOLT WASHER CLEAR ACRYLIC TOP THREAD ON EACH OF THE FOUR HEX THREADED SPACER B STANDOFFS ONTO THE THREADS THAT ARE NOW PROTRUDING THROUGH THE DE PCB SECURING THE PCB TO THE GRAY gt gt ACRYLIC CHASSIS BOTTOM PROCEED TO POWER ON THE UNIT AS DESCRIBED RUBBER FOOT ON PAGE 2 WEARING EYE PROTECTION AND AT A SA
11. t Project Starlight Operation Guide Normal Operation and Notes Plug in the amplifier and then the power supply in that order Make sure the tube headphone jack and input RCA s are secure Once the amplifier is turned to the ON position the amplifier will enter a protection state for approximately 45 seconds while the tube warms up When the protection circuit activates and de activates a slight click may occur Depending on the tube type chosen and the sensitivity of headphones used background noise hiss may be present Choosing a higher output impedance setting or a lower gain tube can generally eliminate any background noise with sensitive headphones This does not mean a high gain tube cannot be used in our designs Selecting a higher output resistance or lower input gain setting will reduce noise with higher gain tubes We advise you experiment with several tubes to find out what you like best Some channel imbalance below 9 o clock on the volume potentiometer is normal We recommend you adjust your source output levels and use Project Starlight with a volume setting of 9 o clock or greater Some faint scratch when turning the volpot is normal This does not indicate a bad volpot just a micro amount of DC that is present with certain tubes This type of scratch is generally only heard with no music playing rotating the volpot Cell phones radio frequency devices or cheap SMPS power supplies in close proximity to Proj
12. usting tube bias quick and easy You can access the channel selector for the Easy Set Bias from the outside of the chassis without having to take off the top cover Dial in the bias by turning the blue trimmers clockwise if bias for the channel is low or counter clockwise if the bias for the channel is high Rotate trimmer until both LED s turn off set make sure to turn off any music source playing into the amp and turn the volume down to its lowest setting HIGH O eire eie 677 9 9 uam eo m eoo HOW TO SET BIAS USING THE EASY SET BIAS FEATURE Low 4 Low 4 Low 4 RIGHT CHANNEL BIAS LEFT CHANNEL BIAS HANNEL TESTING OFF TEST SETTING TEST SETTING D4 D4 Law 1 4 Law 2 4 Law 1 4 BOTTOM LED GLOWING TOP LED BRIGHT BIAS BOTH LEDS OFF BIAS VOLTAGE LOW VOLTAGE HIGH CORRECT BIAS VOLTAGE ROTATE TRIMMER ROTATE TRIMMER CLOCKWISE TO RAISE COUNTERCLOCKWISE TO BIAS VOLTAGE LOWER BIAS VOLTAGE __ Project Starlight Project Starlight has several jumpers settings to customize the amp the way you would like it Below gives you the details on what these jumper settings do THE 6V 12V JUMPER ALLOWS YOU TO USE BOTH 6 AND 12 VOLT TUBES BEFORE POWERING ON YOUR AMPLIFIER YOU MUST MAKE SURE WHAT VOLTAGE YOUR TUBE RUNS AT AND SET IT ACCORDINGLY VIA THE JUMPER ATTACH THE JUMPER TAB TO THE CENTER PIN AND TO THE SIDE PIN CLOSEST TO THE VOLTAGE YOU DESI
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