View Full Version : Tubes / Valves
- What Wiki?
- help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p)
- Zen SE84TS
- 5687 tube
- Tube vs. Semiconducter rectification
- Bogen CHB35 Mods and Preamp ideas
- I Want To Build A 100+Watt per/channel Tube Poweramp
- Phonodude problem
- enjoythemusic's t-rex amp: where is the +70VDC tap?
- Earthing and how it effects sound.
- Rectifier question
- Help for SE Main Transformer
- 6D22S Getter Question
- Repair of a McIntosh MC225 power amp
- OPA627 with tube buffer....
- Bell Stereophonic 3030 help
- Choosing the line stage preamp.
- I Need Help, Mcintosh/Marantz 7 content
- For 45 > 845: selecting an 9.5/ 10 Interstage
- How to reduce gain of this Tube Preamplifier ?
- looking for pp amp schematic without nfb
- Pseudo dual mono PS?
- WE404A drive 6L6 solution
- Looking for info on loudness control
- Tubes and minority carriers
- suggestions for 3 projects please
- DIY tube preamp kit
- M6 lamination: what is it?
- why is it that most tube projects uses copper sheetmetal?
- Sources in the Philippines / Manila
- Tube noise - Help
- Strange reverb circuit
- Tiny tube amp
- DC heating directly heated output valves
- Alps 250k in a Pas-3 Question
- 1st cap heats up...
- RCA VR Tube engineering data
- dropping heater voltage
- Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!!
- Old Sony SE OPT's /w 600r tap... cathode feedback maybe?
- Which is the poor man 45 tube?
- Audio Note Low Gain Quest Power Amplifier
- Quad II: Which resistors?
- Designing a preamp with two tubes
- ARC Classic 30 problem
- Why does the 6AS7 have such high Miller capacitance ?
- Driving an unusal Z=1k5-2k input spring reverb w/o tranny
- serching 5A6 beam power pentode data/curves/schematics for AF practice amp
- HPHV regulator measurement
- DHT Topology Comparison Question
- Secondary Tap of Power Transformer?
- Soft-clipping Circuit/tubecad
- lack of bass in a 6h30 design
- Difference between two novals
- C3g
- All Tube Stereo power amplifier
- what gas VR tube?
- KT88 schematic
- Help me understand the topologies here...
- Finished my Amp, Need to build a PS
- Push-Pull driver stage?
- Floating the heaters
- Replacing Power Transformer
- When car audio & tubes collide...
- 6N6P and 6SN7 Operating point suggestions
- NOS pF capacitors voltage rating?
- Tubes in Vietnam
- Passive pre order?
- layout help
- junkbox amp help
- required specs of an input step up transformer, into a 45, to allow it drive an 845
- 6as7 SRPP output stage
- Bias range and selenium rectifier
- OTL's and aircraft transformers
- PSE EL34 - valve rectification question
- A 2a3 Amplifier
- James Transformer BS
- Plate Voltage on 12ax7a
- Parallel Triodes and Load Lines
- Steve Bench OTL
- High power P-P EL34/6550/KT88 amp suggestions
- Stepped attenuators - break before make?
- audionote 144 OPT comment pls...
- KT88 and Hammond Transformer Schematics
- How do I know that my measured AC voltage is precise?
- 6C33B-C push pull with output transformer
- EL84 grid voltage?
- seperate power supply?
- Mysterious tektronix power supply
- tube amp subwoofer hum problem
- How to test transformer's current rating?
- Death/Black Metal sound on Crate 6212
- 4654/4699 pentodes
- Output tubes on a Marshall JCM900
- vacuum tube logic gate
- Screen current
- Any tube-sleuths out there know who made these Daystrom tubes?
- With this meter reading, enough to know Fuse is the culprit?
- need comments on amp design
- KEF/Celestion speakers for tube use...
- Another cheap fix - MOT as plate choke.
- XAM Mark II B
- How to test voltages on secondaries?
- Audio innovation L1 valve replacement
- Is this in-rush current?
- TETRODE amplifiers
- Audio Shop Eifl Corporation
- 6sn7 Buffer
- Marantz 8b operating voltages
- amplifier with 813 valves
- Changing plate resistor in live circuitry.
- 2xEL34 vs. 4xEL84 vs. 2x6L6 vs. 4x6V6
- KT88 drivers
- Simple Hybrid SE EL84 UL amp.. comments please.
- max input impedance for // el84's and other ?
- Please Help.. PCL81
- Some troubles with PSUD. A little help please !
- Why D getters?
- Help me information of the tubes?
- Questions about this line stage
- 5Z4P rectifier tube question
- Need help from Aikido builder
- Aikesi賍机el34尋找國外代理，可以送一台！！
- Direct heating triodes are really better?
- Audio Reality is back, in digital format
- Stoetkit 25W integrated amp
- Switchable stages with Tubelab抯 hybrid MOSFET/ 845 SE amp?
- Tube Pre Amplifier for SEWA 7 Watt ClassA MOSFET
- Michaelson Audio Odysseus Problem.
- ASC metal can polypro caps: ground the metal can to AC ground?
- anyone living in australia (hopefully adelaide) willing to lend their puncher/bit?
- ReinoutdV
- Priboj amp schematic
- EL84 in ultra-linear mode
- internal shielding
- RIAA: what does it stand for?
- Socket Mounting Rings
- heathkit sa2 - new question
- RCA R35, 39 & 57 Terminal Usage...
- 45 into an 845 parafeed circuit
- Tubes power supply 220 t0 300V ?
- ripple values in B+ supply
- Capacitors and tubes for AA5?
- Dynaco PAS Rebuild
- Audio Research SP9 Circuit Diagram HELP!
- ARC reference II schematic
- 71a Line Stage and Miller Capacitance
- Low plate voltage pentode (<40v) for diff pair?
- loadlines for newbie.
- Measuring approx RMS power O/P
- Hybrid Aikido-ish gain stage
- Loftin-White coupling Questions
- 807 screen regulation
- What kills an opt tranny?
- EAR529 schematic diagram
- World Designs KEL84 Valve Amplifier
- what 300B design would you recommend but...
- Replacement conductance meter for Hickok 533A
- My RIAA Phono Stage Project
- A2 Questions
- World Audio Design
- Seek for your comments/advice to newbie on Tube world
- CCSed LTP validity?
- Suitability of transmitter tubes for musical amplifiers
- Anyone using an 813 in pentode?
- Electrolytic in the feedback loop
- El34 PP Vs. El34 PSE
- RIAA Phono Amp Design
- Matching resistors to 1% or Better
- Wirewound cathode resistor
- Tube Hybrid Amp.
- Nasty ground loop
- ECC88 Class B
- Cree diodes
- Old Tube Amp Servicer In Nj???
- Vg-k max
- Anyone used PT15 / VT104 ?
- rebuild a Musical Fidelity X-10D ??
- Transformer Building
- Identifying weird signal transformer
- 100watt mono blocks
- Resistor combination calculator - RESCALC
- Aikido choice of valves (or tubes, if you will)
- Pin 9 on 6n6P, 6H30, etc
- Croft Super Micro meets Acoustat TNT200
- tube mic preamp kit??
- The SACD Meets Tubes
- Useful Abbreviations
- cap value for 6X4 rectifier?
- One B+ for the both driver and output tube if they are identical?
- Fisher 500B Schematic Question
- SE Output Transfromers Question
- Amplifier Project
- Grid Stopper for parallel sides of dual triode
- centre tap or floating heaters?
- Converting 6.3V to 6.3VCT Quick questions
- Russian Nuvistors...Anyone tried them?
- 一台300bc胆机，大家给点意见，谢谢
- Australian Amp Manufacturers
- Old radio quick question re PS
- Kt90 Pse
- Velleman K4040 is Always Blowing Output Tubes
- looking for transformer with the following specs?
- 5686 amplifier schematic
- Heaters for cathodes with a large swing
- 6DJ8 as phase splitter.
- New driver for SE 2A3
- I磛e made a Mu stage with 6888 and 6C45...
- Quick urgent Help plz !
- Cheap SET Kit for UK
- How can I change bias 6H30pi tube
- DHT heater voltage
- Ok SY...You Win
- Input level required- PP KT88
- SE 6C33C-B ; preview of a new Baby
- 2A3 grid DC voltage
- Dyna ST70 experience bypassing input tubes
- [Theory] Amplifier efficiency
- Pentode Cascode CCS
- Noval Relay
- Where to buy 6A5G ?
- AC or grounded DC for heater?
- EM84 based VUmeter "lines" don't go to zero
- 'scoping tube amps
- Preferred operating points of small signal triodes
- Is the Nuvistor Better Than The 12B4 For A Line Stage
- audio research schematics
- Looking to put the entire (last edition) RCA and Sylvania books online
- 5693 as a phono preamp?
- Audible Illusions Dual Mono Preamplifier
- should the filaments be already hot before the B+ is applied or
- One Electron vs. Transcendar
- "Y" caps? current bleed?
- I made a 200W tube amp!
- Power amp kit for a complete newbie
- Confused, datasheet of 417A/5842
- Audio Amp Project
- Tube tester settings?
- Neutrik XLR for Umbilical
- Primary Impedance
- Need help for HV section Design
- power amp kit recommendations
- 6N6P vs 5687
- Triode spice models for Circuit maker
- My ARC D70 get trouble
- when using PSUD2, do you...
- Depression... and a plea for help!!!
- Weston 981 Type 3 schematic and parts list needed
- 3W 6C33B-C SE OTL schematics ready
- Batory tubes, anyone familiar with these?