View Full Version : Tubes / Valves
- Moscode 600
- Signal caps to keep on hand
- pin-compatible EF86 alternative?
- Capless Parafeed (with apologies to SY)
- T Eaton Viking schematics?
- S5 K-16LS mods, tweaks?
- 5687 fully balanced line stage
- Subminiature sockets
- What Do I Have Here?
- Bad vacuum?
- Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
- Balanced 24V Aikido question
- How to wire a 'Buck' transformer
- OT question - will it work?
- ID Unknown Tube
- Time delay start board for tube amps
- Hum reduction ideas (again)
- Utc Ls-33
- K-16ls
- Potential valve damping tweak
- Conversion Tube PA and Bass Tone
- Wanted. Simple EL34 Push Pull Design
- PCB advice
- Hybrid voltage quadrupler?
- my fu80 amp
- Pre-amp for BeoMaster
- Question re: chokes
- Inundated Electrolytics
- power transformer recommendation
- PS decoupling cap placement
- USSR Russian Caps. KBG-MN or K75-24?
- #10SE Tested project
- schematics help
- HF Decoupling Caps questions
- 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
- Useful power transformer design thread on Analogue
- Understanding Simple SE design choices
- Fender Pro Amp
- Hewlet Packard transformer
- 6BG6 for KT66
- new learning
- TV-7D/U Tube setting --- 6550
- ecc40 LTP
- Latest incarnation of music angel kt88
- Tubelab SE oscillation?
- 6SL7 5E3 - together at last?
- AN Shinri schematic wanted
- Found a box of old toobs
- Choke input filter LF noise
- Aikido line stage - plus phono line stage
- Hook up wire?
- Irritating problem with soft start
- OTL with 6AN5
- Mono Blocs Completed...
- Magic Eye for solid state Tuner?
- a question about drive power
- converting BAL to UNBAL using tubes and without transformers
- Aikiado question
- Top cap tubes+ arc welder
- Small beginner amplifier and hello :)
- Blackburn MicroTech TechTube(TM) Valves update!
- Resistor setup for integrated amp & headphones?
- Brook 2A3 PP amp ID help
- heater voltage
- kobayashi 300B push-pull
- Triode strapping a tetrode...
- Any info on 3572 Half wave Rectier
- Question Conrad Johnson reg. psu?
- Another 300B SE
- 7-pin Low Rp tube
- S-5 K-16LS Kit arrived in Germany !!
- Transcendar RIP?
- 6N6P in an Aikido?
- Were can i bay a Telefunken 6ak5 ?
- SE 245 driverstage
- 12ax7 srpp dac output
- How this circuit works (Baby Huey type)
- New tubeamp
- Snubber caps
- Counterpoint sa220
- Resistor before tube rectifier
- TCJ Push-Pull calculator v2
- Heathkit AG-9A audio generator schematic !!!
- Sources for James Transformers
- High Voltage Soldering (IPC Standards?)
- Speakers for Flea Powered Amps <1.5W
- Opinions on Allen & Bradley Carbon Composite resistors
- wich tube is best for the yaqin cd buffer ?
- Mikael Abdellah's SE KT88 bass response + tightness
- How best to use the PSU xformer I have
- 6L6GC AB2 Amp
- Kofi Annan in: "I'd Like Me a Mic Pre!"
- Too much gain - help with changing driver tube.
- EL95 SE schematic wanted
- test settings hickok i177B for 5ar4/gz34
- Gibson Ga-20 rvt reverb problems
- good value (i.e. cheap) OPT in uk?
- Input xfmr, diff stage, CCS questions
- Theoretical OPT question
- input/driver stage for kt88/6550
- thyratron switching
- Making component choices (6V6/EL84 PP)
- Which socket for a 5Y3??
- using #47 in p-p
- 6463-12b4a srpp?
- Need some help identifying which tubes are suitable
- Tube Priceing
- edcor output transformer advice
- Non top-cap tubes for plasma tweeters
- Intermittent Static on ARC REF 3 Preamp
- Have you guys seen this yet?
- ECC88 heater overvoltage damage?
- Recommended designs
- Aikido Phono PCB Modifications
- Need Power supply advice for Andreas 845
- Phonodude question
- Power Supply for Aikido Phono Pre
- Completed New Combo Amplifier
- Want to Build my first Tube Amp
- single tube amp ~pspice problem
- Modding a tonebone to switch to pentode triode operation?Can this be done??
- Relyon KT88/EL34 SE issue, schem attached
- Search 35T Schematic
- Hickok 600A, shattered mercury rectifier...
- Pete Millett Low-Mu Triode Preamp
- First scope/buying oscilloscope probes
- thyratron rectifier
- Need help making some choices on what to build
- A2 curves and curvecaptor.
- damper diodes ....
- Different Rectifier Warmup Times
- stupid question of the day
- Fisher 400 Output Transformers
- Tube amp repair
- Hi-end 845 with only two stage
- PL519 Heaters in series blow fuse
- Looking for parts to tinker with
- KT88 Recommendations?
- Anyone Interested in Pete Millett Hybrid Amp PCB's?
- Mirror of Steve Bench's site
- Quick Question About RCA Input
- Built an amp kit!
- Holy Smoking Toroid Winder
- Group Buy for Experimenter's 9 and 7 pin Tube Socket PCBs
- why do tubes have a treble lost ???
- Low Frequency Mains Noise
- Help modifying circuit
- Ever heard sth like this?
- dual volume control
- Need DIY help in Los Angeles area with tube preamp
- 6c19p se otl
- pt
- "Killer" Screen Driven Push-Pull Amp Initial Queries
- fixed vs. cathode bias
- RH84 Push pull?
- Cheapfield project
- heater connection problem
- What to do with this PP OPT?
- Question about Bridging
- White Fuzzy furry growth..........TV-2C/U
- Tweaks for 845 Power amp
- the aardvark grows a spud!
- WEST output transformers?
- Tube Buffer Success!
- Lafayette LA-234 Amplifier
- filter choke voltage rating
- Dealing with Mr. Miller (phono)
- Western Electric plant
- Pentod PP - too much NFB needed to sound nice?
- Lf351 replacement for Curcio Daniel I
- How bad is grounding one side of AC filament ?
- New matched tubes - where to use them
- Glow Tube (0B2) Help
- Bose 901 + Tube amps
- Tube tape NR
- Ming Da MC-34B fuse value?
- Potentiometer with bass boost pin for Simple SE?
- Volume pot for TubelabSE 300B recommendation ?
- (help) Make a 13.8V 50 Amp continueous current
- Toy amp.
- Looking to build a 25-30 WPC Push Pull amp - Need Help
- Quicksilver 8417 question
- GSM interference
- <WTA>Tube biased by LED
- source for knobs
- Lundahl 4-30 Build
- Anyone Have Info On Triode Board For MK IV?
- I would like to DIY Marantz model9
- 813se DIY OPT problems
- Got a big output trafo I want to use.
- building S5 k-amp
- EL84 max power for HiFi Amp
- Question about cathode bypass capacitor:
- Curcio Daniel II builders?
- 13E1 SE design
- Booster Amp for low powered SET
- Soft starting the rectifier
- Tube preamp components help
- My own version of the EAR 834P Clone
- Eico HF86 modifications
- Heaters and centre tap
- DHT's, fixed bias, sharred filament supply
- Do New JJ GZ34's have less B+ Drop?
- Grounded, Floating, or Thermistor-To-Case for Center Tap
- Hi, looking for some info on tube amplifier design basics
- Nifty little (cheap ) transformer for bias supply
- Problems with my ARC VT 130SE
- Telefunken V69B - Tube Amp
- HV Regulator
- EL95 mini SE
- NOS vs. Chinese Plate Caps
- TL783 regulated B+ 250V PSU schematic
- Tube buffer for electronic keyboards used in a band?
- 6922 tube buffer
- 300B grid resistance
- 6AU6 Aikido in Triode mode?
- brown crud?
- Steve Bench's tube crossover
- Bogen M120 bass guitar amp coversion
- Wierd striation on 6L6GC plate
- LT1085-based regulated 6.3v heater supply
- Are these tubes cooked?
- New Build Power Up Advice
- Mic pre idea
- Choosing the right mullard design to match the Foreplay III and Ariels
- Dumb question on Coupling cap ratings...
- European Triode Festival 2008 - couple of seats left
- Building PRETOR toroid preamp
- ACT2 - ConradJohnson by 818design
- PS questions?
- Frank's Tube Database Down?
- Anybody try Euro DHTs like RE134, RE304 etc??
- Need help...again :)
- idea for a simple bias servo for AB PP
- GU-32/GI-30 tube PP amp
- Switch-mode PSU for tube heaters?
- Hammond Primary Lead color is wrong?
- A newbie need helps on the very 1st tube PreAmp
- why does 12u7 need certain amount of gain to stop hum 120???
- EL34 Pushpull imbalance
- Tube Preamp Popping on Source Input Change (?) / 6DJ8 Preamp On Chip Amps
- Rozenblit Grounded Grid Cascode Pho Preamp Project
- Driving the kt88/6550 in set mode
- 6550a question for engineer?
- Yl1260
- Parts layout diagram for SE amp
- Da 42 Triode
- Bogen CHB100 Power Supply Question
- Testing of russian tubes on B&K 747B
- VR150 use