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- New use for 6X4 ??
- "Beam Me Up, Scotty" (Beamus) AM Transmitter -- first prototype
- Ampex 300 4 track
- Tube tuners on s/s pre-amps
- Re: Best place to sell tube amps
- Re: JBL 4344 MKII for sale
- Help Identifying 12ax7a
- Basic magnetic phenomena explained
- Disc ceramic vintage caps
- Boosted Triode
- Harman Kardon FM100 - early version?
- System Advice
- Turneraudio website just re-posted
- Tuning indicator without magic eye or meter
- Re: golden tube bias
- What is this matched quad of new RCA 6L6GC tubes worth?
- Harman Kardon Citation 1 Kit Value
- horizontal tubes
- Rarest Challenger Ever?
- Bridge or Center Tap?
- Tales of a Heathkit W7-M amplifier
- Is this test result OK?
- Which way would You try to sell a 300B SE?
- What is a 6L6 Radiotron?
- EL34 suppressor grid (g3) characteristics
- Sencore LC53 VS Sprague TelOhmike 6A
- Mystery transformer
- SET amplifier Q
- Triode or pentode with local NFB?
- ANN: HpW-Works V3.2 Spectrum Analyzer & Wave Generator
- Local CFB with grounded ultralinear OPT tap, Partial Circlotron.
- Local Cathode FB, UL Tap at Ground Part 2
- Luxman SQ38D
- Class-B amplifier, control grids grounded, input to the screens.
- Electron Tubes Philips type #QB3-300
- Interesting stuff re tube testing
- Re: Direct-Coupled SE Amplifier using the EL509/6KG6
- Re: Direct-Coupled SE Amplifier using the EL509/6KG6
- Re: Direct-Coupled SE Amplifier using the EL509/6KG6
- Simple NFB Simulations for a FB Pair
- JADIS amp reformation
- Re: Restored Antique Radios FS
- Hum Reduction for DHT Power Stage
- Professional Radio Engineer
- WTS : New Pioneer DDJ-SX Digital DJ controller for serato software..$500
- Re: All the best in 2012A.
- Apparently This Matters: Ruzzle
- What is it?
- Simple Regulated PS Using 6N7 Pass Tubes
- Hybrid Reg PS
- 1600 volt 250 ma Constant Current PS
- Brute Force 2.5 KV, 0.5 Amp CC PD Drives a Laser
- 500-2500 volt, 200-250 ma CV PS
- How many tubes do I need?
- Re: All the best in 2012A.
- favourable triode section
- I'm looking for a Boob Tube
- 6SN7GT PREAMP TUBES
- QUAD I amplifiers
- Re: valveradio.net
- Re: FS: NOS KenRad 6SN7 -GT (Smoke Glass Pairs/Quads) VT-231s
- Replying to a Private Message
- Boosted cathode follower, super cathode follower etc
- Hybrid amps with tubes driving mosfets
- HT Stabilizer
- Long Tail Phase Splitter
- Walnut Hammond Chassis
- Darlington and Sziklai pair
- Cascode Amp responds to Large Signal Burst
- Amplifier Burst Testing
- Simple Low Power Constant Current Test Set
- THD testing of amplifiers.
- Series Shunt regulator
- Hybrid amp, EL34 drive to compound complementary mosfet output
- Tone Burst Testing
- Speaker Matching transformers.
- Re: FS: RARE Tubes Genalex Telefunken and more!
- Re: Tannoy NOS drivers in bamboo plywood boxes
- Re: Tannoy NOS drivers in bamboo plywood boxes
- Re: Tannoy NOS drivers in bamboo plywood boxes
- Re: Tannoy NOS drivers in bamboo plywood boxes
- Re: Tannoy NOS drivers in bamboo plywood boxes
- Questions for Pat Turner
- RCA 30W amps from about 1960
- Quad 405 with current dumping
- Differential input stage in PP tube amps
- Amar Bose dead at 83
- Re: Never mind the CAGERS, watch out for the HUNGRY WOLF!
- 12AU7 noob question(s)
- You won't believe this if I tell you...
- Wien Bridge Oscilator, 1Hz to 1MHz.
- phase shift audio oscillator 5Hz to 100kHz++
- Compton reverse log pot, tubed Wien Bridge oscillator
- Tuning gang C value for Wien bridge oscillator
- Wide Range Wein Bridge Oscillator
- Wobulator
- All Triode PP UL
- All Triode PP UL Amp Secret Revealed
- Re: Toob Amplified PC Speakers
- The tube power amplifier vs. solid state
- A euphonious New Year to y'all — Andre Jute
- Test for access
- What ever happened to Steve Bench?
- Low Cost SET Amp for Newbies
- Re: Acoustech manuals,anyone?
- Monster Power Amp by Stephie Bench and Myself
- Restoring a Sherwood S-5000
- Restoring a TV-7/U Tube Tester
- EF86 preamp
- Help find power transformer for project
- Re: Long tail differential pair?? Who has circuit like that?
- Guitar amp tone control calculators
- Sequel to Low Cost SET Amp for Newbies
- Power Frequency Ripple Reduction in B+ Supplies
- LTSpice, guitar amp tone control
- Power Supply Ripple Sidebands
- Guitar Amp RF oscillation, tube warmer recipe
- VTL 40/40
- Sanctions against Russian Tube makers
- 100W monobloc amp details
- Re: Marantz 7--Why so expensive??
- Quad II question: High B+ a problem?
- Re: AA11 Heath preamp users???
- Sanctions against Russia over Ukraine.
- Dynaco MkIV monobloc re-engineering
- McIntosh using 8005 triodes as output
- The Twin Coupled Amp, Crowhursts Unity Coupled Circuit
- One for Pat .....
- Quad-II amp info and re-building
- Re: WANTED: Jensen G610
- Re-edited page on Quad-II mods.
- What would make a Quad II oscillate?
- Re: NOS 6LW6s
- Quad-II mods - again, oh no....
- Baxandall tone control, still good?
- Some Projects
- Re: Triodelington
- Empire Turntables
- Life in the Last Lane
- stuff looking for a good home
- Second DIY (sort of) Amp
- Grounded Grid?? Really?
- Scott 299b OPT needed
- 3rd Annual Spring Cautionary Post & Some Edits
- WTB:Sherwood or DRACO Micro-CPU tuner from the 70's
- looking for marantz 8b tube cage
- Re: e80cc = 12au7?
- WTB Seimens Schatulle 42 and Telefunken Opus 7 Blonde
- Tube Tester Calibration Needed
- Seeking data on old designs
- tube amp kits on ebay
- Re: 'getting the most out of vacuum tubes' by Tomer
- Re: Euratele koln tube tester
- an interesting archive of R.A.T.
- Chinese Rectifiers
- Simple PP Amp with +ve & -ve FB
- Re: Is There Anybody In There?
- Copper Band in a Cross-Over Choke??
- Need Scott 299B Output Transformers
- Re: Is There Anybody In There?
- 1/2 12BH7??
- Pentode Screen Resistance (rs) Estimation Example
- New web pages, 2016, about AM radio
- Borbely Millennium 200
- Andrew Jute KISS 194
- Re: Is EnnyWunne around? or Haz Evvree Wunne died?
- Re: uTracer - tube curve tracer [kit]
- Re: uTracer - tube curve tracer [kit]
- Re: old tube phonograph questions
- otl amplifier 65W
- What is the most powerful audio output tube?
- Grundig TK 46
- My Mechanic says I need a Tube in my Tire
- BIAS regulation Electro Harmonix KT90 vs Jinvina KT90
- Which Mesa guitar amp has 12 power output tubes
- Re: Best tubes for Jolida SJ-502
- Re: Best tubes for Jolida SJ-502
- Annual Spring Cautionary Post - 2017
- Replace plate load resistor with plate choke
- What type of capacitor should I use?
- Scott LK150
- GZ34
- Re: Precision 900B tube tester,unique?
- Re: FS: Lazarus Pre-amp, Quicksilver GLA amp,& McCormack Micro Phono
- long lines of interesting and educational posts to usenet ;-)
- Mouser Electronics
- B Field collapse
- Re: Marantz 7--Why so expensive??
- Re: 2E22 - "300B Pentode"
- Re: FS; Western Electric tube amplifier
- Re: World Audio single ended 4W questions
- Re: World Audio single ended 4W questions
- Hendrix preferred 6550's over EL34's!
- Re: AR3 Speakers - Lessons Learned!
- Re: Electrohome tube amp - what does it value?
- Re: Kerr-McCosh
- Re: Restoring a Variac
- Re: ECC40/CV3884 as audio tube - opinions?
- Re: Need these tubes to fill out my drug store tube tester UPDATED LIST
- Apropos Actual Use of Tube Equipment
- What is the 6 volt equivalant to a 35L6 or 50L6?
- Anyone know where to find a Crosley Model 23 Dial Cord diagram
- How do you test a Selenium Rectifier?
- Looking for links and order info for PARTS
- Fisher 200A Monoblocks
- Tube mono-block amp with SIX 6L6 outut tubes
- The most important tubes ever made.....
- Does anyone have any Eico tube stereos or manuals?
- What company made the best vintage Test Equipment?
- Wanted: Heathkit AA-32 assembly manual
- Re: Tubes For Sale: NOS and Tested Used
- Re: FS: Audio Tubes
- Re: New Arrivals
- OT - But Relevant: Bug Zappers
- What 60 HZ Feels Like - Even Some On-Topic Stuff
- Best new EL84 tubes?
- Capacitor connected cathodes in PP output
- Re: 'getting the most out of vacuum tubes' by Tomer
- 171a
- Radio Repair Clinic
- Re: Tip-Cutting Pliers
- Dynaco ST-35, A First
- Fisher 30-A amp
- Distortion please...Amp Distortion
- Triode Naming Convention
- Re: Multi-Section Capacitors - "Empties"
- tube-making, the equipment, and the process
- Re: Lies, Damn Lies, and Global Warming
- The Snowman
- Article from 2012 - "nano" vacuum tube
- Panel-Mounted Non-Polarized Convenience Receptacles
- rarity of LF and HF adjustable coils, coil forms, etc.
- Re: AR3a vs. JBL-100
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