- 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?
- Musical Pre-amp topology needed. Interstages please apply!
- Tube power Amp matching with SAE Mark M pre amp and AR18 speaker or MS 25i
- PowerDrive Circuit for 805 (+ve grid bias)
- Alternate spice models
- Is this heater supply OK?
- Basic RC Value Question
- Hookup powersubwoofer to a tube receiver.
- Transformer question RE; connections on phono stage
- Rectifier Tubes Data - Quick Sheet
- Now This is A Tube Guitar Amp!!
- Which cabling to use?
- Need 396A/6N3P/2C51/407A spice model
- Antek Toroidal Power Transformers
- HT stands for???
- Is it possible to hook up 6c33 plate in parallel
- Help eliminating hum
- Tube LTP CCS?
- Trancsendar Transformers
- Hafler/Keroes 6L6 UL
- hum
- Leads for ISCO PS?
- Negative Feedback Bogen CHB100
- TubeCad's Hybrid amp question
- Cathode bias resistor value for 6SN7?
- El84 2-Channel Mono Blocks
- Tube Design Books
- Interesting Williamson article..
- Locating Preamp Output Transformers
- Plate characteristics
- How do you finance A Great DIY Audio Amp?
- 808 Se
- Parafeed doubt
- A little research: old tube amps from the past
- RCA Victor stereo cabinet amp-newb question
- Transformer temperature?
- switch in SPICE
- Using a standard pentode-tetrode as output "space-charge tube" any ideas-experiences?
- Tube testers which is the best?
- finished !!!
- Transformer Leg Connection Question
- simple ccs under 5-10mA ?
- Curcio Sarah Phono stage: opinions?
- suggest a KT88 SE to build
- Transformer potting material??
- Jan E Veiset Mini EL84 pp
- Some questions on non common things
- basic question on plate curves
- Euro barrier strip palace
- ARC D90 needs new electrolytics
- 5763 Triode Strapped
- Recommend me some transformers for a PP EL84
- grid LED bias?
- Help on tube socket
- Taking CFB to the extremes...?
- Output section impedance change query
- Tube Suggestions
- 82 Popped
- OPT Project for EL84 SE
- Interesting eBay "listing" for tube amp
- How to chose the right choke
- Eco warrior thinking of jumping ship !!!
- HELP! Cathode bypass caps keep going...
- Best Operating point for a 2A3?
- Need help with preamp
- Best place to buy valves and components?
- Replacing cathode resistors of Aikido 1st stage (or other SRPP circuit) with chokes
- Circuit calculations
- Finally going to give my TVC/active preamp a real home...
- Suggestion on the input transformer for tube preamp
- sylvania & GE tubes
- SE Amplifier
- "fisss" on the 6C33C-pp
- Best price for tube output and power transformers ?
- What kind of output transformer?
- transformer
- 20W PP Choke PSU Question
- Regulated B+ supplies (using tubes)
- Confused by the numbers
- Feedback on Thorsten's legacy "universal dht" amp
- Are there techniques for triode-strapping on the fly?
- PROJECT begins: bass preamp
- The best bias point for KT88
- All tube CCS
- GU50 SE Amplifier class A , with 6SN7 Full construction details
- 50L6GT & 6L6GT sounds ??
- Especially for Tubelab: 845 amp 2.0
- Mini guitar amp from a Webcor tape amp, is it possible?
- Powerdrive
- Filament voltage and affect on Rp
- Tube pre-amplifier PSU
- Help with a cathode coupled pentode driver?
- Amp that has the biggest number of irons
- 12AX7A replacement
- Bogen CHB-10A Conversion, need help and advice
- Who said it was a good idea to try pentode!
- Input level
- 6V6GT
- 6AR6
- Any TCJ Push-Pull Calculator users?
- 211 Push pull operation points
- Edcor CXSE25-8-4K vs Hammond 1628SEA?
- Bass guitar preamp
- 50W KT88 PP w/ NFB on Bonavolta
- Looking for nuvistor pre-amp preamp schematic please. 6CW4?
- BELL 3030 Amplifier
- Diy Paradise!
- Another PP 6B4G
- How to get a buffer with overdrive from a 12AX7 ?
- Pulsating Glow
- Question on using glow tubes (v-regs)
- Eliminating the OPT: impedance matching
- KT88 and push-pull ultra-linear
- Positronic Tubes
- Paint steel chassis with the "aluminum paint" used on wire fence?
- Best bias for 6cg7
- Coupling caps test bed
- 829B Based Amp
- slight hum still haunting me
- CCS bias question
- Can't get solder to stick
- EL84 amp plus subwoofers? STUPID? OR NOT?
- Johan Potgieter
- parallel sections
- PL504/EL84 SE vs parafeed
- [help] Look for McIntosh MI-200 Circuit diagram
- My experience: the cheap punch set VS Greenlee punch
- 6V6GT SE schematic -need!!!
- What's the deal with Broskie's iPod buddy?
- a quiz about AC power
- Beard P100 Amplifier
- Quick identification question
- 6V6 guitar amp design attempt
- Some more RIAA questions
- what to do?
- A suspect EL34
- Best way of reducing heater voltage?
- Musical Instrument tube amp part suppliers
- tubelab
- My first power amp
- El34 SE pentode
- All Electron Tubes Manufacturers
- Mu stage driver
- two questions on Parafeed amplifier
- 6AU5GT
- Connection advice
- 'Tube'-ing a reel-to-reel player.
- EL34 make up by PCB
- wanted RIAA schematic
- What is the best software to create tube schematic
- Soft clipping acceptable?
- help for this amp
- Pentode PP amp for comments, please
- 966A rectifier
- 938 power triode
- PL36 PP Amplifier 22W Full construction details
- Quick question about the output of my amp
- Sansui Transformers from Tokyo Electronic Industrial Co. LTD.
- An "All American" tube Project
- Aikido and output transformer
- Why are Hammond SE OPTs dissed? Heavier than the competition...
- Driver stage headroom
- Help me before I deal hot electric death to myself (PS question)
- AVO CT-160
- Two cathode resistor bypass questions
- Home-Made Tube Guitar Heads
- What do you guys think?
- Antique Sound Lab Aq1003
- Audiomaster integrated (Valve) amp
- PP Amp using 811A
- Replacing ECC83 in Leak Stereo50 with ECC808
- 6N30/6H30 Datasheet
- Equivalents to 6888
- Input voltage
- Converting from integrated to pure amp
- Final schematic, I think?
- Toroidal core saturation
- Mystery SE OPT
- Is this a Spud Amp ?
- input cap V rating
- 6922 Heater - BIAS
- JJ 2A3-40 Watt?
- 12AU7 testing result: Are these tubes still good?
- "OTK" stamp on russian devices
- Where did nj7p.org go ?
- New to forum! Or: A few newbie questions
- Powersuply Le Bong?
- Fixed Bias: the ups and downs
- Bias Adjustment Question
- Multiple secondaries hook-up!!!
- Plate voltage related to sound?
- Array speakers & OTL
- First Post - Hum on 5687 Pre-amp
- DC powered amps
- Evaluating Unknown Power Transformers
- 0v grid bias with UL connection?
- LV Filament supply quandry
- which tube using NonDirect heat with best-class sound ?
- Surround Decoder - Subtract amplifier
- New To Forum - First Post
- Try to understand
- tube site
- OTL with 6S19P?
- What should B+ on 300B push-pull be?
- Regulated PSU with EL84
- How do I design minimum current for 35W PP AMP
- Buying bits'n'bobs...
- Can't make this address work.....
- schematics for 6C33 single ended OTL?
- Guitar amp input tube paralleled
- valve preamp
- trio W-38 problems
- Cheap Russian 2.2uF 400V PIO Capacitor
- Otl Se
- My 2A3 is being left behind
- SE for Bass?
- Wal-Mart power supplies
- Nice deal!
- Look for high-voltage regulator projects
- Typical plate Voltage for el34