View Full Version : Tubes / Valves
- Differential push-pull design question
- Any EF184 users?
- 30P1S - How to use them?
- st-70 as good as it gets?
- Subbing in a TVC - input load Q
- Chinese tubes, new ones or relabeled?
- 6AV6 => 12AX7 question
- crate vintage club 50 2x12 keeps blowing preamp tubes
- 845 & 300b tubes
- Sourcing sockets and plugs for power supply umbilicals
- Sub mini history question ...
- 6DX8 Amp for Headphones and Low Volume Needs
- Surplus Voltage Solution
- Tube rolling in the Triode Electronics 6au6/12au7 driver board
- RCA mystery tube help
- Breadboarding/Prototyping - How to and Tips/Tricks
- Sub-Miniature Tubes - Low Voltage
- True direct-coupled PP amp
- "Radical" twist on an all DHT phonostage
- input tubes for 300b
- JE Labs simple 2a3 filiment tranny, 1 or 2?
- ebay Valve Preamps boards for £18 !
- Smoothing caps
- Spud issues - a little help, please
- GLY513 in PS of Simple SE / PP and OTL
- Has anyone here built something with this super triode?
- What is this part in old radio?
- Has anyone done anything with a 5977 sub-mini
- Driving EQ from kathode resistor
- Understanding CCS vs CVS
- Can you believe this!
- help with my humming valve amp
- Picking tubes for SimpleSE-ish amplifier
- 6gk5/ECC88 Phono any comments.
- Meng Yue X1 6P1 amp (NOT the mini)
- Basic HiFi Tube Amp Layout? Please?
- stupid switch question
- Max Current of James JS-6123HS Transformer
- How do you determine a driver stage?
- SUPER cheap nos tubes if you live in california.
- 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
- a good tube tester?
- Can't get adjustable reg to work
- 9 volt tube preamp.
- DCD power amplifier: 2A3/d3a CCS coupled: new topology?
- Equivalent to IXCP10M45S?
- Looking for non-DRD 300B using D3a as driver
- Akai M8 rebuild/restore/will-this-work?
- space charge 12fx8 amp or preamp schematic?
- Help with setup to trace UL curves
- My KT88 Williamson Amp Build
- UV 203A any good for audio ?
- What gives with this square wave?
- bottlehead paramour PT
- DC filament supply without electrolytic(s)?
- Looking for R Core power trafo and choke
- PP tube amp for bi-amping : above 400 hz
- 6N6P question
- Integrated valve amplifier : to buy or to build
- Lookin for an ST-70-like project
- Formula for Zout of diff pair
- 6SL7 and Crossovers
- Meng Yue: EL34 or 6P1?
- Power Transformers and chokes
- nos amperex authentic? label doesn't rub off
- Software analysis using tube analog circuit Audio Note Kit 1
- Webster Amps,Racine Wis.
- Help figuring out resistor values
- Small (Novel) Tube Rectifiers?
- Conrad Johnson ART preamp question.
- pd510
- i want to build 3D21WB tube PP amp
- How to choose an optimal load line for a cathode follwer buffer?
- removing sound controlls...
- Pentode cathode follower output impedance
- Telematic KC401
- ebay, 7c kit, worth it?
- I will sell radio tubes
- Mullard 5-10 for guitar use?
- Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
- Olson AM-158
- Check out my KT88 curves
- Just another /\|OOB to Tubes....Need Schem Help
- Problem with 832A PP amp
- Marantz 8b power transformer
- New SET Project
- Magnavox Model #OFMC26 Tube Stereo
- Balancing Servo
- Akai M8 Modding Service Required
- 12AX7 basics, some questions on wiring
- Hickok Model 600A
- Valve for Marshall AVT275 amp
- Tube Shield
- Choosing an output transformer
- Lost in Translation - DIY Japan
- Ebay KT88
- Filament voltages - an idle curiosity
- Project caused by need
- PSU issues, advice needed.
- Tubelab SE Driver Bias Help
- Question about cathode voltage
- NOS/NIB tubes what does it mean?
- Help to identify transformers
- Guitar amp schematic for PPP EL84
- DIY tube amp power supply
- Socket Saver
- Need some tube help!
- Need Help Biasing TRV-M300SE Amps
- Will this supply work?
- First foray into SET, design for your comment
- Help understanding a few Ohm's law calculations
- Hum in left channer - rogers cadet 3
- Need help on understanding AudioResearch like output stage
- Help finding 2A3 integrated 2 stage design
- 75 / 2A6 Spice Model?
- Vacuum Tube DAC
- Need help wiring CT transformer
- What is this component in my tube amp?
- What type of amp should I make with this? Schematic help also needed
- 6418 tube preamplifier - Oatley Electronics
- Black out coused demage in tube output stage
- Need help adding a master volume, and some troubleshooting ...
- Other uses for your 807's
- Ballantyne output Iron
- Power Trafo & Choke headroom
- Bare R Cores and bobbins, where???
- Plate chokes
- Has anyone done anything with the 6112 tube?
- el84 amp advice
- About to be scammed - bigtime
- Dynaco PAS3 -- New Cap board installed
- Throw it on the heap... SSE
- Loose Tube Bases
- 12E1 Triode PP, Any Suggestion?
- dac output stage with 5687 pp
- Help needed with my Epi Valve Jr
- Baby Tube Subwoofer Amp help wanted
- 12BH7 and the Simple SE?
- "The Bursar" Push-Pull Amplifier
- Needed - Advice on tubelab Simple SE build
- Oil filled caps - how are they made? DIY caps?
- EL34 schematic question
- Newb B9A question
- 6889 in the Simple SE - misc observations
- Recommend me a KT88/6550 + 7N7 (6SN7) Schematic!
- 01A tube amp Schematic???
- Tubelab's own forum
- Are there elegant ways to prevent huge power-on plops?
- New EL84 Push-Pull Monoblock
- Just to laugh...
- QUAD II Stereo Set Up
- hammond ao68/7591 question
- 6SN7/6SN7 Aikido + CS4398 DAC = HEAVEN
- How to run a square wave test on an OPT??
- Vanderveen 73 Watt valve amplifier PR20HE-S2
- 6LU8 Spud - Request for comments
- Increasing Output Power for the Engineer's Amplifier
- Amperex
- A Single Ended presentation
- Single-endet Stereo Amp KT88, 6L6, 6P3S
- My new 6H30 pre
- amplifier bias
- Distortion measurements on Meng 6P1
- What's wrong with SE Cad?
- Observations
- p2p aikido phono finished!
- 6AC10 tubes
- Tricked On Ebay!
- Last newbe queston for today, shielding
- Pot actoss the filaments
- How to adjust summetry?
- Tube swap THD
- Yarland 34A - Crunch sound, now not the same, any ideas?
- Amp SE using F2a tube
- WEST-CAP, How about sonic reputation
- New 300B JEL/Walton Builder's thread
- The worlds least efficient amplifier
- Shuguang 6L6GCR and 6550 - Your Experience Please
- Bogen CHB-35 - guitar tube amp conversion (another)
- Help me identify these Caps! (hamfest find)
- nM scale Valves
- Orientation of E-I core OPT and toroidal power transformer
- Baldwin Iron
- Carver super 7
- Question:disadvantages for using a SE OPT on parafeed?
- CF after gain stage
- New to Tubes, just bought first tube amp
- Sonic Frontiers SFP-1 mods?
- AES tube brand mixing..
- Hum with EL84 Push-Pull
- Low Voltage Tube Preamplifier
- 27 driving 2A3/45/ or 300B
- Tube pre-amp for a vehicle?
- Meng Yue Mini schematic?
- Do you know this guy?
- Triode Pentode combo tubes
- M8136 M8137 Mullard
- suppo with vinyl?
- small binding post for TT ground
- 27 Filaments DC in series
- Music Angel KT88 hard wired
- Nice! First CCS.
- bizarre bias, ST-70 experts step inside
- hammond power tx 200series update
- Volts D.C. panel meter for B+
- What is the best tube amp??
- 6GM8 Hickok test settings?
- NASA space-age tube for audio use
- trouble matching line level to guitar amp input level...any help?
- ECL86/6GW8 Console opinions
- Bad tubes wanted for tester testing
- 7868 tube biasing and output trans protection
- second build, recommendations , thoughts
- Changing Electra-Print DRD45
- ruTubes.com. Anyone dealt with them?
- output transformer manufacturer
- no resistor values........
- Gz34 + otl 6n23p
- Jukebox Iron
- converting tube rectifier to solid state rectifier.
- Help please, Jolida 202a hum.
- Amperex Bugle Boy tube???
- What's a reasonable amount of power-supply ripple?
- Vintage tube amp Aux In To CD In
- mounting TO-220 devices
- My first valve amp - help appreciated :)
- Plasma ball in tube
- Nagra's engineers at work.
- what just happened? Plate glowing
- "Mullard 5-20 KT88 PP blocks!
- CCS transistor choices
- Simple SE parts "Kit"
- capacitor upgrade on my tube phono stage
- Microphone Preamp
- 6N2 swap
- K12M / K12G Current Draw
- Best china amp?
- Hagtech Clarion 2A3 SET
- Tubelab Simple SE Schematic
- new idea for a tube power amp
- help choose between two preamps
- Need a MC phono stage, do i need a pre as well?
- What the difference between 7591a & 7868
- High Voltage Huge Storage CAPS for that Ultimate Valve Amp
- Need a good phono stage design..
- getting a pop when i power down, help
- Japan vs US output tx
- My own RIAA tube preamp
- Tube-I-zator SRPP DAC I/V-Stage circuit discussions
- Lab Power Supply