- Which brands apart wyetech uses Grounded grid?
- Parallel vs. series filament supply - or another filament idea
- 6146W Power Amplifier. Please help!
- grommes 511a mono tube amp/reciever
- First phono needs QC
- Meixing 3008ab problems
- protecting a VR tube
- what's the purpose of pins 3 and 7 in an 8pin VR tube?
- help me i need schematic of Music angel PP el34
- How long to pre-heat filaments on 6SN7s?
- Amplifier Layout - Help & advice needed
- Any good places to shop for diy in beijing?
- White CF with 6SN7
- Cheapo Guitar Amp
- Power Amp
- is there any sound in a 30A5 / HL94 ?
- the hybrid one
- 4-1000a se subwoofer amp
- ear 834p output resistance
- Output transformer push pull
- Cheap Lunch?
- Source for Alps RK18 pot's..?
- Triode strapped tetrode
- ok, help me out here......
- Homebrew Toroid O/P Tranny
- GIBSON GA-79RVT Stereo Cab plans or dims
- strange noises from ECL86 amp
- Retouching knicks and scratches on chassis
- MingDa MC-7R noise and gain
- start-up sequence of Aikido preamp / SS power amp
- Driving a 6B4G with a single 5687/7044/E182CC?
- phono stage with different replay equalization?
- Lprimary variation in pair old opts
- 8417 triode connected tube data
- 5763 = El84?
- 5687 to 6L6 SE ?
- TubeCad Feedforward Shunt Regulator
- "12EA6" Pentode !
- Marshall EL34-100/100
- short-circuit rectifier EZ80 !
- Good radio tube:6AQ5/6005
- Replaced pulled tubes with a resistor?
- Choke input PSU, drawbacks?
- Heater PS alternative / Redux
- Gold or silver dress-up rings for tube amps.
- 50C5 conversion
- Sa-5.1 blow fuse
- Hum problem of preamp
- Chassis ground blows fuse
- 7193 (2c22) preamp buzz/hum
- Se Opt
- Does anhone use those switching power supply for the heaters?
- Tube Minidoc, featuring New York Noise
- Help Choosing A Sowter Trans For My DAC?
- fisher 800c clipping at ultra low volume
- "audiodigit" tubalizer & tubepre original schematic
- Dht Guitar Amps
- rating of series caps
- F704
- tube socket PCB library or dimensions
- motorboating
- 6AN8 Triode connection + EL 84 PP
- Please help amend 6AS7PP circuit
- El84 Pp
- 6V6 Ultralinear
- Dear Moderators
- 845 se
- Bell 2122-B integrated amp - tube suggestions
- Wirewound pot for Rk
- KT88/90 F2011 Schematic
- United Electric 967
- Scott 222c mods...?
- Switching supply for 300B filaments
- ECF80/6BL8
- 24v tube buffer & line stage schematic
- Vintage gear hunting
- Seperate PSU Transformers? Filament Supplys?
- 828 is better
- Hum on a choke loaded stage
- SE Transformer question
- Design question - How to make amp porn visible?
- Leak Stereo 20 - Johan's Square Wave Theory
- K-12G First Time Build
- Vishay vt52-55 resistors in a tube amp
- EL84 Push-Pull ccs bias
- Eight 807's in Push Pull?
- Working with Current O/P DAC Chips
- Unison research Preludio schematic
- Rewinding Power transformer
- Information needed on RCA SPECIAL RED TUBES
- Score?
- Herron phono
- tube preamp + SS power amp.
- Puzzler
- HI-Fi 6p13p
- Resistor values
- To chassies SE amp,PSU question
- Grounding & board Layout questions
- Look for a beefy driver tube.
- ECC81
- 5687 v.s. 6922 preamp/xover
- amorphous iron core good or not
- Pre-Amp
- submini tube preamp is a success
- Roll off frequency.
- Materials Technology for Electron Tubes by Walter H. Kohl
- Grundig TK 46 manual
- I'm anti-expensive audio parts but man, a good capacitor can make a difference
- How to determine a tube is shorted?
- Power supply problem
- SS power trans for tube experiments
- how to set output current on G Pimm's CCS circuit?
- Tube testing questions
- Push Pull Output Transformer wiring problem
- shunt regulator using VR tubes (with ccs like g pimm) and circuit load
- Stepped attenuators vs. Carbon pots
- hum/buzz with pot all the way up
- Cap and resistor types in guitar tube amp
- VacuTrace ... In Chicago?
- Lifesaver question on earthing
- Affordable, but good attenuators?
- Gu50 Set ?
- mounting an EL34 upside-down
- Direct coupled PP 2a3 amp - maths needed!!
- My 1st scratch build complete......
- Very Basic EL84 or EL34 DIY Amp
- Curcio Daniel Preamp Mods?
- Tube designs: 45 driving 45/2a3/300b?
- Adding secondary of output transformer into cathodes of output stage ? Eico ST-70
- Marantz 8 B : Output Transformer
- has anyone used a fan on their project?
- Audio Research SP12 heater arrangement
- tv damper diodes
- volume pot quite close to a tube - is this okay?
- UTC s42 special series
- 6H30P preamp schematics
- Digital potentiometer corrupt tube amps
- Alternative filament supply for 01A line stage
- Lamination Size
- Yaqin MC10L and KT88
- Help me read tube data sheets
- Quick Question (Driving 6L6GC's)
- Cause for concern -- scorch mark in tube
- why not 10k pot
- Dynaco Stereo 70 Output Transformer
- 6CJ3 rectifier or 6D22S rectifier
- Back-to-Back trannies
- Spring Reverb transformer
- Hamfest in Toronto area next weekend
- st70 bass response
- Triode "Champ" transformer v Edcor
- Low vs High aka Series vs Parallel Filaments
- Bogen monster MO200A schematic
- The Great Tempe Audio Shootout
- opinions on this p-p kt88
- Any XLR Tube Buffer Plans?
- Mystery transformers
- I need help with my next project
- A thought on Cathode feedback
- EL34 SE, direct coupled
- Ccs
- Hybrid amp: ECH83 + TDA2030A
- Leaving tube preamp always powered on.
- Variable 6922 heater to cathode voltage limit...?
- Is this risky?
- What to do with some WE tubes and others
- 6B4G SRPP
- pentode in triode mode SE vs a DHT SE like 2a3/300b
- dynakit decware bottlehead ... which to pick
- 6JC6 triode strapped?
- Searching for Raw Turrets
- Help.. EZ81 power supply diagram
- Ear 8l6
- Bogen H-30 guitar mod
- Voltage measurements from a blown 5AR4 vs. good 5Y3
- Sanity check on a 2A3 ultrapath with Pentode driver
- Star ground with dissimilar metals: concern?
- 5AR4 marked as 5V4GA?
- Calculating cathode bypass cap.
- Please need help! TUBE BIAS PROBE
- Aikido Phono Stage
- Using an El84 as a driver
- Transfromer value of this 300B circuit
- Chassis Layout & PS questions
- help needed for 1st DIY tube amp - Sakuma 845 SE
- Ideas for 4v filament triodes/pentodes
- Comments on Power Amp Viability
- Balanced active crossover advice
- The Tube Center
- Help1 with a 3 channel 2a3 amplifier
- volume control hum/noise
- PS choke magnetic induction
- Circlotron power supply question
- Autoformer as choke?
- E182CC
- Fender Hotrod Deville 212
- Grundig Fine Arts OTL Amplifier
- Damper diodes, 6ax4 and or 6w4?
- Knight 333 / Pioneer SX 34B info needed.
- Gargantuan Linestage Output Capacitors
- Quad II Restoration
- Help identifying a tube.
- Tube filaments in series?
- Design of Resonant Input Choke PSU
- Dissimilar triode
- How important is the quality of a triode used as a cathode follower
- EL34B tubes
- Why not so common to split dual triodes between channels?
- In search of power supply schematic for phono preamp
- General Electric vs Toshiba 6L6's
- Audio Research Dual 75 Capacitor Source?
- Choosing A Cathode bypass capacitor
- 12AU7 SRPP buffer suggestions
- Pentode/triode switch question
- Lundahll 1669A Secondary voltage???
- Substituting tube rectifiers by silicon
- newbie question: is the connection to the output xformer somewhat odd?
- All quiet on the SN front - about darned time!
- Estimating power output
- Looking for KT88 Amplifier Schematic by Mikael Abdellah
- Comments on passive pre and cables
- curvecaptor
- 6b4g pushpull build!newbie
- Need help; I have "dog leg" shaped waveform on my amp
- Output Transformer Question?
- Urgent OT HELP needed ASAP please
- Questions on Triode Strapping
- Morgan Jones BALANCED?
- What are your RFI precautions?
- Pentodes without cathodes?
- help me
- Good quality 6600 CT OT
- Local Hamfest score!!!
- Unknown Transformer
- S5 11g help
- 6SN7 pre-amp
- These tube can be use for amplifier
- Any pitfalls to choke derived CT?
- Audio Research D76A bias adjustment
- I meet Mr. Morgan Jones
- st70 electrolytic caps
- Thank you SY
- el84 1 channel stopped working help
- Help! Weak Bass!
- never say never - 300B amps...
- 6aq5 Screen resistor?
- L. Tatro farm radios from 1930's.
- Published/DIY ultra-low THD designs?
- EL84 SE auto bias
- Kofi Annan in: "Oscillatin' in the Bevois Valley'"