View Full Version : Tubes / Valves
- 6AS7 Mono Block's
- Filter/Regulator for B+ Supply
- Ecf 83
- cheap but good SET amplifier?
- DRD calculator
- Luxkit A1020 need help!!!
- Sophia Electric™ 300B 2.5V Mesh Plate Tubes
- benifits of auto bias
- KR Enterprice
- Preamp Boards From Hong Kong
- earthing
- Best sounding medium priced EL34 tube?
- 6CA5 Rectifier - B2Spice Model
- Help needed for a 6L6 Push pull amp
- constant current filament regs
- 6SN7 Basics (Newbie)
- Anyone tried the EH fat bottle 6CA7?
- TJ Tubes
- My tubes are going down. HELP !!!!
- Tino Zottola...where are you ?
- Lilliput amp
- filament rails
- Ss Diodes??
- Tube mic preamp
- CCS Filament Regulators for split filaments
- Quicksilver 8417 power supply caps?
- Audio Research LS7
- simple valve preamp
- valve preamp
- stand by switch or not?
- Omega Grand 6 and which amp?
- Line amp to speakers
- a bit more bass?
- Output transformer application help please.
- 5687 pre...some problems
- Recommendations needed for designs of PP pentode strapped as Triode
- KT88 push pull noob questions (sry)
- Need help identifying Stromberg Carlson Amp
- help needed diagnosing Grounded Grid power supply
- Building a tube Model????
- EL34 best for triode strapping ?
- Subwoofer amp
- Replacing Valves
- help me on 845 scheme....
- Help valve newb salvage some old TV tubes
- Cathode follower distortion results
- Bullet Proof 6L6GC Recommendation PLEASE
- newbie recomendations please
- NOS Tubes
- Audio Research CA-50 tube rolling
- OT on Decaware SE84C-S
- Change PP Amp Into Phono Pre?
- pl84 ore el84
- VTL Compact 100 Monoblock x 2.
- Battery bias a 6SU7 in the 300b billies
- Speaker impedance roughly 6 ohms, 2A3 SET...
- B2 Spice SE tranformer parameters
- Determining cap values (old radio)
- thoughts on 300b operating points with 3k output
- Grounded Grid wiring question
- PP-Triode , PP-UL , PP-Pentode-strapped-as-Triode
- Found some EC8010
- SE PX4 or PX25 amp, anyone built one????????
- HAL-O Damping Instruments
- An intriguing 6S45P direct coupled 300B amplifier
- difference between Cayin and Jolida
- 417a line preamp help
- kenwood trio el84 push pull schematic
- Any comments on this design?
- Amp for speaker testing
- Shielding preamp power supply
- Troubleshooting EL34 push pull amp
- amp input volume
- What Mullard 12AX7 is better?
- Universal audio / Avalon mic pre schematics
- Since transconductance amps has become so popular lately...
- Mecanical PSU hum
- help i.d. this amplifier
- Question about a hybrid PSU design
- 35Z5GT half-wave rectifier
- Riviera 725 guitar tubes amp
- Best place to use 2 Jupiter Bee caps in tube amp?
- what rating for diode of 450Volts DC
- Telefunken 6L6GC ???????
- Why are my amps doing this?
- How to calculate the gain of an input-driver stage?
- 6L6 vs EL34
- protect your amps
- Snap Ring Octal Sockets
- Suitable operating point for 6SN7 as a differential driver ?
- Suitable rectifier
- 6N1P & SV83 mu stage driving 845?
- Has anyone built a transformer coupled preamp?
- Circuit diagram for RCA vintage 6BQ5 amplifier?
- Driver valve discussion
- Help to choose the tubes!
- Why hum in one channel only?
- DC heater noise WORSE than AC
- Rdh 4
- 900v B+ Silly time.
- tube rectifier arrangement
- Matrix Amp?
- Dynaco Stereo 70 amplifier
- Ultimate power switch?
- AC or DC current for 300B and 2A3 tube filaments ?
- 0.1uF @ 3000V Ceramic?
- Power Triodes in current production
- Anyone in the world identify eico trans?
- Mullard 5-20 in triode mode
- THX certification, or integrated near THX Quality,
- Feedback resistor on Baxandall tone stack?
- SE Pentode or PP Triode ?
- how does one "voice" a tube amp
- Musical fidelity Nu-Vista
- Tube substitutions in Heathkit W5M
- PSUD2 question
- 6L6 class A P-P CFB amp
- i have a matched pair of 3cx1000a7..
- Different silvering patterns on tube tops?
- Designing Guitar Amp's Project
- Help with amp rebuild
- Mystery (to me) phase inverter?
- Biasing
- SE KT88 Amp
- Good design?
- Auto Biasing
- nuvistor MC step up
- Corian for tube amp?
- 6AQ5 Line stage?
- 6550 o/p stage
- Help with finding preamp schematic
- AVO data for 8417 (Quicksilver) tubes
- Any experience with this nice toroidal OT?
- 300B SE cathode feedback to grid?
- hummmmmmm?
- ERO KP1832 Bypass Caps for sale
- no bass makes pedro a whiny boy
- Iron, glass, sand and lead.
- Is this any good? Considerations
- 2A3 SET Output Transformer opinions/recommendations
- My 6C45 DC 6C41, advice wanted
- DIY valve
- A good SE project?
- who will build me this special "line tubeamp"
- PI filters
- Designing a simple dc filament supply?
- Rogers Cadett amp
- HI & a few words/questions ...
- 6d22s
- eBay
- Chassis layout for Stereo JE Labs 300BDX
- Output transformer help
- CAD Program for Tubes
- 801A/816 tubes wanted
- This little thing might save your life!
- What happens if I loose the cathode bias?
- beginners ecl82 power supply
- 2MHz, High voltage source?
- beginner's ecl82
- Handmade Electronics Metal Punches?
- EL34 types
- Spice Model 6CW4
- El/pl 519
- Euridice symetric to Amp?
- use of 6dj8 as driver on a direct coupled 2a3 se amp
- Western Electric 275A Schematic
- Where to source 833 power tube
- capacitor reactance
- Overvoltaging resistors
- EL84 Push Pull amp.
- Power supply load capacity
- Tube preamp problem
- E88C (6DL4/ 8255), any circuit for it?
- Is there a name for this drive method?
- 6BM8 Question
- Tube mic preamp/mixer
- Please cast your votes..or make a suggestion or 2
- RIAA in LTspice
- Parallel ECC82 comment please
- A push-pull amp i can live with
- Sub-miniature russian amp help
- Tube Optical-Isolation Unit
- MKP in the Powersupply.
- 6SN7-GTB Globe (Chinese)
- 12BH7 Specs
- Is this worth my time?
- choke value
- ipod + tubes
- Leak tl/25+ OPT selection
- Gabevee's Maggie (MAG1515)
- Can partial feedback be as effective as global fb for decent damping factor?
- Which trans wire is which?
- What's wrong with this tube?
- F: great sound control with ECC82
- 30W UL 6L6P-P amp
- 300B stereo SE amp and PP2A3 monoblocks
- 6S45P matching
- Inductors made for crossover in an amp?
- PX4 or AVO44 or AV044 based SETA
- power conditioning
- Microphone preamp with compressor
- Current production rectifiers
- mu stage help...
- Non-Polar caps to cathode bypass
- 5u4 / solid state switchable supply
- 12AX7 sound ... going with the trend
- 6L6 PP Design Recommendations?
- EL 34 30W ultra linear
- Convert Audion Silver Knight PP monos
- Too much gain
- The long lost linear gain stage
- Philco power tranny diagram/5u4 supply
- Kt88 Se
- supersize me, please. (powersupply)
- Seeking advice on "Circlotron" cross-coupled feedback OTL design
- Best 6CA7?
- ECC99 line preamp
- coupling caps???
- variable regulated negitive grid supply
- hum loop advice
- Against all odds...
- 6as7 se amp
- Help .. tube amplifier .. 1st !
- winding a toroidal pp output
- solid state Vs Tube Rectification
- Cryoed Tubes...what To Expect?
- I'm looking for 6H13C tubes
- Which ST-70 ?
- Some questions about Van Scoyoc X-coupled splitter
- Quicksilver 8417 bias runaway?
- Most effective use of valve pre & active xover
- Tube possibilities for 2.9k-ohm speaker?
- Help on Preamp Mute Switch
- Fixed bias supply problems...
- Help with VTL preamp...
- question about 811A and 572B
- Dual Stereo Cathode Folower Setup
- tube tester
- Audio Innovation 1000 SE
- 6as7 PP Schematic Help
- Newbie Question: Need help diagnosing a problem, tubes on, music fades out quickly
- 7591EH failure
- opt frequency response
- Anyone got any opinions on this?
- My ForePlay Processor Controlled Preamp
- Tube ghetto blaster ?
- Help trouble shooting
- "The Fisher" tube amp 7189 output tubes
- UTC output transformers specs
- Regulation options for 807 g2