October 22, 2025 Used some parts from a 1950 RCA am/fm turntable to build a guitar amp. A clean amp with active treble and bass ( a tube stage
3 of 11 Making the Phase Inverter and Power Supply for a BE100 inspired amp Cathode biased 6V6 tube amp build I have switched the fourth gain stage in the preamp from a resistance coupled amplifier to a cathode follower. This stage drives the
Power amp is a single ECC99. There are 3 12AX7 preamp tubes, one of which serves as a cathode follower for the tone stack, Phase Inverters.for the Common Man Cathodyne phase inverter - altering tail value
68-LE DÉPHASEUR-CATHODYNE 1/2 Both pickups and the neck pickup played on the left. Rhythm played on the right on the bridge. I am still catching up on the settings Support this channel via a special purpose donation to the Georgia Tech Foundation (GTF210000920), earmarked for my work:
This video covers the design and analysis of the cathodyne phase splitter. The cathodyne is used to produce two output signals of Understanding Vacuum Tube Amplifier Schematics - Push Pull - Part 3
1968 Grommes Precision Electronics S10 Hot-Rod Guitar Amp Conversion (SCREAMER!) 1965 Vox AC-50 Master Volume Mod
Cette vidéo expose le principe d'un déphaseur cathodyne Il est abordé: 0:00 • Introduction 1:38 • Principe. 3:45 • Impédance 6:33 Short vid of my bread boarded 5E3 based amp. This is basically an exploration of what happens when you adjust the bias on the cathodyne phase inverter ?
The cathodyne phase inverter is a cross between a gain stage and a cathode follower, because the total load resistance is divided into two parts and shared HAMMOND ORGAN CONVERSION CIRCUIT COMPARISION
This video describes the purpose and design of three different common phase inverter circuits: Split Load or Cathodyne, The Story Line Video Correction, the output tubes are 6V6 tubes, NOT 6L6 tubes Originally I was going to keep everything from Using an oscilloscope, and two probes, you can perform the balance of a phase inverter via this process. It should work with any
It sounds like you would like a post-phase inverter master volume (arbitrary choice), which causes a change in how your presence control works. See our non-profit green energy site here: A 12AX7 Schmitt phase inverter aka Long tail pair in
60 yr old PP EL84 Hammond organ conversion. the first clip is two 12ax7 gain stages with a TMB tone stack between them and Time Bomb IV - pt3 - All Pentode 120W Head - PENTODYN Phase Inverter and Amp wedding 6П7С
Brutus - all tube guitar amplifier head (6V6 , 5Y3, 12AX7) Converted a old Philco radio/turntable into a guitar amp. 3 6av6 preamp tubes and 2 6k6 power tubes. Used the existing chassis Who doesn't love reverb for guitar? This video shows how to easily add Analog Spring Reverb to any amplifier that uses a
Newest Both pickups and Neck pickup test The finished 45EY2 amplifier. 35W4 replaced with selenium rectifier, two 50C5 tubes in push-pull operation and 12AX7 for Tube amp Theater How to build modify Fender Phase inverter circuits
Prototype 50 Watt Guitar Amplifier - Visual Overview Modified Fender 5E3 Cathodyne Phase Inverter Micro-Toad 2W High-Gain 2-ch tube amp build in an old cheap combo
Adding Analog Reverb to 5E3 Fender Deluxe or Amp with Cathodyne Inverter The Philco Project
This is a (very) rough demo of me stumbling clumsily through some guitar noodling to demonstrate the sound of my home-brewed This video is all about exploring what happens when we intentionally throw a cathodyne phase inverter out of balance. We will Gib'lette demo #1
G~Tone40 40watt point to point hand wired; 5751 preamp valve, 12AT7 phase inverter, 6DQ6-B output valves. Designed to You will be pressed to find a vintage tube PA amp that does not have the cathodyne phase inverter. On the other hand, there are Vintage 1959 Lectrolab R500b Recording
ECE4448 L26: Cathodyne/Concertina Phase Splitter (Guitar Amplification and Effects, Georgia Tech) Presented is the wave form produced by my modification to the phase inverter of a Fender 5E3 Tweed Deluxe guitar amplifier. ECC82 Phase inverter and driver
RCA parts project 1953 Geloso G226A 50W - another Tweed Bassman in the rough? Tweed Fender Pro Amp. Learn how to make an amp safe and sound its best
Electronics: Headroom of cathodyne phase inverter (in vacuum tube amplifier) This question is for the fractal tone pros out there - how to emulate
MORRIS "VTR 10" - Changing driver/phase inverter tube 10w Push-Pull PCL82+12AX7 amp - Preamp sound sample Electronics: Headroom of cathodyne phase inverter (in vacuum tube amplifier) Helpful? Please support me on Patreon:
BG124 - In this episode we try to explain push pull amplifiers and various types of phase splitters / inverters such as the cathodyne The Amaretto – Chasing Tone Taming Fender Princeton Reverb Fizzy Overdrive
After a complete restoration of a VOX AC30 guitar amplifier, one problem remains The output clips on the positive swing of the Brutus - all tube guitar amplifier head Quick video of the Brutus head. Tubes: - 5Y3 rectifier - 6V6 power/output tubes in push pull
Even if you have perfect AC signal balance from the Phase Inverter it still may not be balanced after the output stage with the variance in A little test of a switch added to choose between cathode or fixed bias on an amplifier I built 5V4 rectifier 6V6 output tubes 6SL7
Sound demo starts at 3:10. This is a custom tube amp I just finished up. I was probably a bit optimistic on the power output, low strange phenomenon with op-amp phase inverter
Converting tube PA amp to Long Tailed Pair phase inverter 45EY2 amp changed to push pull HiFi 1961 Tweed Deluxe Repair & 5E3 Workshop Announcement!
Tube Amplifier Phase Inverter Balancing It is now very similar to a Princeton Reverb, but with a long-tail inverter similar to a Deluxe Rev. This amp also has a TO26 output transformer In this video, we'll revisit the 1960 Stromberg-Carlson SAU-22 PA Amp. We'll tinker some more with the circuit, changing the
i made a quick and dirty prototype of an audio phase inverter circuit on a breadboard and it suddenly started to react like a radio This is a rewired, hot-rodded, heavily modified PA head. Tubes are 6EU7, 2x 6BQ5 (EL-84) and a 6V4 (EZ-80) rectifier. A previous
Presented is a visual overview of my first amplifier design based on a London Power Standard. It features 50W output , two Messing with the Bias of a 5E3 Cathodyne based Phase Inverter
Modifying Phase Inverter Balance for More Distortion Demo at 8:03 ! When I got this amp it was in pretty bad shape - it needed a cap job badly, was missing a fuse and had a broken
VOX AC30 '61 Model Phase Inverter and Output Stage Tests Phase inverter distortion comparison - The Amp Garage
phase inverter. IOW, the princeton three triode plus cathodyne could be considered a two triode + cathodyne phase inverter with gain. If 69- LE DÉPHASEUR CATHODYNE 2/2 PTW "Tweedster" Custom Amp Demo
Lead on left. Rhythm played on the right on the bridge. Getting more gain/saturation from the driver tube. The Long Tailed Pair Phase Inverter
ECC82 Phase inverter and driver. I apologize for the blasting volume at the end, I forgot to tape down the mic or something like that to keep it from moving, and the
On the bench is this 1961 Fender 5E3 Deluxe. This is one of the most iconic amps ever and has been used by many artists like Master Volume Mod Explained - Type 3 Post Phase Inverter PPIMV G~Tone40 Valve Amp - Clip 1 of 6 - Low volume
Vintage 1959 Lectrolab R500b combo amp recording. Recorded with Epiphone Elitist Les Paul into a mic straight into Logic Pro Another episode trying to convert this cheap old Italian PA amp into a fantastic boutique tube amp ;-) The cathodyne phase
Fender Cathodyne Phase Inverters | Telecaster Guitar Forum 1963 Geloso G215-AN tube amp part 3: modding the phase inverter filter
6V6 tube amp with cathode / fixed bias switch 12AX7 Schmitt Phase Inverter circuit (PI) This is another complete live video of the "wedding" of Time Bomb IV, where I put Preamp and Poweramp together for the VERY
Yes, as noted the cathodyne PI may as well overdrive (in addition to its driver stage) and then you get weird effects like phase inversion of Modification of a Univox U-320 tube guitar amp. This amp had low gain. The solution was upgrading the inverter for more gain.
Installing a post phase inverter master volume on a 1965 Vox AC-50. Music recorded with this amp: My attempt to kill most of the fizz in my late-70's Fender Princeton Reverb when it's overdriven. I ended up putting in grid resistors
This is a very basic and easy to implement post phase inverter master volume that you can implement into a guitar amp that uses How to Balance the Phase Inverter
HOT TRANNY Leads to Confusion and Poking with Stick - Stromberg-Carlson SAU-22 Conversion Long tail vs cathodyne phase inversion in non-technical terms
Topic 67: The Cathodyne Phase Splitter Since the cathodyne operates like a cathode follower, changing the value of that resistor will not change the signal voltage that appears across
Dave Brons set out to build an amp based on the Friedman BE100 for less than £500 Here is the video diary of that process. Part 5: Knight Model 94sx700 (Frank’n’tone – it’s alive, and I did it my way…) I experimented with the cathodyne phase inverter some more with this amp. I think the key to getting the cathodyne to sound more like a LTP is to basically
Tweedster by PTW Amps is an all-tube, hand-wired custom amplifier for guitar. For more about PTW Amps, subscribe on YT. Cette vidéo expose le tracé d'un déphaseur cathodyne à couplage direct. Site web: Facebook: How to balance a Cathodyne phase splitter? | Page 2 | diyAudio
My original brief for this soon-to-be-sold Tweed 5E5A Fender Pro was “Make it safe. Make it sound Awesome”. Yeah baby! Cathodyne Phase Inverter
Cathodyne vs. LTP question One of the major design issues of the princeton reverb circuit is their cathodyne phase inverter. Historically spoken, the Princeton was a The cathodyne is quite linear down to lower currents, as it is not effected by the bunching together of the grid voltage curves in the same way
This is the NobSound using push-pull 6P1s in the output and a 6F2 pentode preamp to a triode Cathodyne phase inverter. Here is A few methods to balance a Phase Inverter in a tube amplifier. Given a signal generator and an oscilloscope, how can you