- How does Rk affect tone/gain?
- Polyvinylcarbazole to replace Cadmium Sulfide?
- 6L6GC to KT66
- what do you think
- Magnet Wire-Making Inductors Q
- using a 6F6 instead of 6V6 to lower power
- Dummy load box heatsink Q
- measuring OT's primary impedance
- Adding an isolation transformer
- help!
- Filter capacitors???
- Max input filter cap for EZ81?
- Bass Amp OT and tubes
- Tremolo - design challenge
- Resonance cap in NFB?
- Fender Bassman ext. speaker out
- 6G15 reverb driver and tranny specs - more questions (Dang!)
- Watts-volts chart
- finding custom pot tapers?
- field coils...again...
- Circuit to switch between 3 channels
- Filter choke in 6G15
- TUT6 is here, honey! I'll be in the bathroom...
- can i remove the vibrato circuit??
- Relay channel switch - help needed
- using an inductor and capacitor as a low pass filter at the 12ax7 cathode
- Single ended 12a_7 ???
- Oscope advice please
- Equivalent gain - triodes in parallel
- Power triodes - biasing hot?
- Question about impedence selector and different tubes
- anyone know where i can get a 5k P/P DPDT?
- calculating plate load for non-traditional power tubes
- Critique my idea please
- Gibson GA42RVT
- OT impedance for P-P 6L6's
- Question about class AB operation
- Mid Cut at 700 Hz
- Rectifier tubes and sag
- The myth behind Class A
- Heptode as mixer
- Why is the gain control a pot feeding the signal to earth
- Different rectifiers and proportion of voltage dropped
- Peavey ReValver MKIII - Change tubes in your amp model?
- Grid stoppers?
- Low pass cut-off freq
- why the prevalence of push pull?
- Help me break down this tremolo circuit
- 6G15 stand alone reverb (PT and Reverb tranny qns)
- potentiometers, linear vs audio
- "unstablilized" cathode bias voltage
- Choke question
- Nichicon VX bypass caps
- Long Tail component values
- V30 Ghost notes
- I know different people have different opinions but...
- PSU observations and questions
- Parallel triodes for smoother overdrive?
- Power Scaling...again
- fender capacitor choices
- Can I do this?
- Best shelf filter for signal to noise ratio?
- How much interaction accures between the two halves of a double triode?
- Reverb and Driver tube: 12AT7 or 12AX7?
- zener on ct...again
- Qn about Epiphone EA33RVT output stage grid leak R
- What's the best single-control tone stack you've seen?
- Hammond 1750N OT color code?
- 6Y6G - 'Nother Great NOS output tube cheap
- Parrallel triodes
- Grid current limiting
- How to calculate output power for a push pull AB1 guitar amp
- 5E3 Tone Stack / Volume Control Theory
- 2E26 - Great NOS experimenter tube for cheap!
- please help - building a tube driven reverb
- PCB pots
- Is 1 Meg ohm REALLY the most for a grid leak resistor?
- Your high gain approach?
- RC coupling, I am confused!
- RoHS Directive...lets clear up the confusion.
- What gauge speaker wire?
- Thanks all, making progress!!
- aa1164 schematic needed
- My PSU design
- I have some voltage questions!!!!
- Understanding pentode/triode switch
- Audio - linear transistors
- Routing edges?
- creating asymetrical waveforms, and its effects
- Applying Negative Feedback
- Hammond 1750N...anyone used one
- Specing a power transformer
- mallory 160 series capacitors
- PCB design and high voltages
- Fender OT and PT for high gain amp?
- Chassis layout critique
- Marshall 3520 bass amp
- DIY Bias probe - advice needed
- 6CG7 As Reverb Driver
- Gibson Tremolo circuit
- need scem-plate follower
- DC/transformer coupling
- Can someone give me a simple explanation of impedance?
- Blackface Bassman AB165 - what transformer?
- Determining frequencey roll-off imposed by PI capacitor
- Vibroking Stage 1 cathode follower - tone?
- Calculating gain, I don't get it, and I MUST be missing something simple...
- Transformer question
- PT and tone?
- Critique my Pspice and simple tube amp design?
- Lower PT primary voltage == greater current capacity?
- Best 50w marshall OT?
- Specs of an output transformer and their effects on the tone
- Bias feed resistors
- Is this possible ?
- 6EZ8 - 9 pin triple triode
- Next: GA4-RE - oil film "memory?"
- Next: GA4-RE - oil film "memory?"
- Next: GA4-RE - oil film "memory?"
- Calculating cutoff frequency
- trim pots
- Building something like a Fender Vibratone using a used Leslie Speaker assembly?
- Relay power supply
- 6J7, 6F6, 5W4 single ended amp
- bassman circuit question(s)
- next candidate - Stereo-vib GA-83S
- Epiphone EA-65 circuit - wild and interesting
- Scratchy pot fix for VVR
- Tube coating
- Gain Stages and High Pass Filters
- Add an xlr input/preamp to Peavey 500bh
- Small tube amp for direct recording ? possible?
- Engl P-ball Lo lead channel schematic?
- Fender mixing/summing resistors
- How do you build your breadboards?
- No Center Tap and No 100 ohm R's in Filament Circuit
- finally.....
- Mini toggle switches?
- Seriously noob question
- can someone explain this?
- Tube Books
- choke filter inducing noise
- tone stack / LTP impedance problem??
- Single ended 2 x 6V6 in parallel schematic ideas?
- output power selector
- too much preamp signal??
- using OA2 voltage regulator tube
- speaker cable capacitance....DOH !
- Switching multiple volume knobs...
- EL34 vs 6V6
- Baxandall tone stack for guitar amp?
- Fender reverb driver max current?
- KT88 in SE Config for Max output
- Protection?
- best post PI master volume
- Fender Grounding Scheme
- Driving a small transformer
- touch sensitivity
- terrible sound at extremely master volume
- Distorting/Not Distorting the phase inverter
- Amp basics
- Building a Portaflex - PT, OT, cab?
- Biasing EL34's
- Can you usually lift the ground on the tone stack?
- Input Network - Shorting Jack
- Major pop in my switching mod, help.
- how to tell if an amp is operating in class b
- question about Triad R-11A power transformer
- 5D8 circuit walk
- Distortion in PP vs SE
- 500k vs. 1Meg Volume pots
- RC-10 do I need this?
- Preserving even order harmonics in push-pull
- Fixed bias, phase inverter AB1 PP... examples?
- Can someone explain the inverter 12AX7 in the Fender Twin 5D8?
- input resistor...need to dump it.
- what is this doing?
- Can 6AK6 tubes take 250 volts?
- If zobels and conj. filters aren't a bandaid.......
- Shocks from Fender Amps
- Driver stage after LTPI
- D-(mo) Lite- R schematic critique
- Silvertone 1483 questions
- tone control in negative feedback line
- How to select screen R's?
- desigining gain stages for...
- Volumen pot position in cathode follower design
- seperate channels sharing cathode follower
- Harmonic complexity
- unused 12AX7 triode - ground unused pins?
- Switching a BJT for a JFET
- 2 heads, 1 speaker
- Flyback diodes in a MusicMan...and otherwise
- Conjunctive filters (not?)
- Output Tube Load Resistance, Tube Current and Voltage
- What is typical max 6V6 plate V?
- silicone rubber?
- relay switching
- Explain to me.......
- Let me know, do you think this will work?
- EL84 Plate Voltage
- 7199 as Phase Inverter
- Toggle switching multiple caps!?
- schematic software
- Dumble thoughts
- Bias problem
- Advice needed: unorthodox schem
- Coupling cap question - 2 caps separated by a resistor?
- salvaged ot
- older tubes question
- Fixed bias question.
- Using a pot instead of 2 resistors for a heater center tap
- More bass!!
- Cathode bias in 5G9
- MOSFET signal inverter?
- TMB tone stack -- what tube and components?
- Tone stack input impedance?
- Coupling cap in input stage
- Very little sound
- schematic and question
- 2 x 6AQ5 pushpull with 6X4 rectifier question
- EL84 and 6L6 in same amp - how to get 2 different B+?
- Output tubes' current or negative voltage?
- 5Y3GT data sheet?
- multi-stage Preamp question
- John Martin
- MOSFET op-amps vs Tubes... signal characteristics?
- Long-tailed Pair mods and what they do
- Oscilloscope... this good?
- More home made attenuator questions
- Caps to ground from preamp plates
- Can i replace choke with a resistor?
- Combination cathode bias and fixed bias
- bias voltage
- Mains current draw
- heater issue w/new build
- AB165 second gain stage
- switching between tone controls
- Adding screen resistor where there was none before?
- Heptode preamp
- Resistor in series with choke
- Screen R question
- Adding another stage to this schematic...
- Cathode Transistor?
- Quadrupling filamen to drive IC?
- trying not to exceed 6X4 ratings
- All 6sn7 preamp for 6v6? First schematic design!
- 6AQ5 vs. 6BQ5/EL84
- "Champ" power tube options and load requirements
- Fender style neg bias adjust vs balance