Peavey Classic 30 - Hand wired Part 1 guitar amp mod

A reworked and hand wired Peavey Classic 30 guitar amp. With added filament transformer so that all tubes are parallel wired (original wiring was series). Now power tubes can be pulled to reduce power and heat. Cathode bias / Fixed bias (adjustable) switch added for additional tone options. Master volume added. Dual gang pot for both stages of OD channel for improved control and range. Long Tail Pair phase inverter added (change from original Cathodyne phase inverter). 16/8 Ohm impedance...

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From: Bobsbluesmusic

Related topics : long tail pair phase inverter

Peavey Classic 30 - Hand Wired Part 2 guitar amp sound check

Sound check for a reworked and hand wired Peavey Classic 30 guitar amp. With added filament transformer so that all tubes are parallel wired (original wiring was series). Now power tubes can be pulled to reduce power and heat. Cathode bias / Fixed bias (adjustable) switch added for additional tone options. Master volume added. Dual gang pot for both stages of OD channel for improved control and range. Long Tail Pair phase inverter added (change from original Cathodyne phase inverter). ...

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From: Bobsbluesmusic

Related topics : long tail pair phase inverter

12AX7 Schmitt Phase Inverter circuit (PI)

See our non-profit green energy site here: http://www.lablancinventors.org/

A 12AX7 Schmitt phase inverter aka Long tail pair in the audio world is breadboarded here. It works well at audio frequency but for radio frequency a 6922 vacuum tube should work much better.

This splitter/inverter is used to drive a push pull vacuum tube amp.

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From: Lablanc Engineering-two

Related topics : long tail pair phase inverter

tube amp 4 or 5 watts with 4 6au6 power tubes/ Wah pedal with fx loop/ tube overdrive demo

built this amp using 4 6au6 power tubes and long tail pair phase inverter. two gain stages with tonestack between them. also a tube overdrive i built running at around 45 volts. Also a wah pedal with a built in post fx loop.

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From: forbyn

Related topics : long tail pair phase inverter

Simplexi V2 - with Parallel Lead/Bass channels

DIY tube amp using the Wattkins Universal PCB

Trying a new topology: paralleled triodes (Lead and Bass) into a Long Tail Phase Inverter, into a pair of fixed-bias 6K6GT power tubes.

The potentiometer and cap hanging on top of the amp is a "Cut" control that I haven't decided yet if I'm keeping or not (hence the lack of a hole in the chassis for it). It's left in the minimal treble attenuation for the length of the video.

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From: SnickSound

Related topics : long tail pair phase inverter

Philips EL6431 PA driven with Williamson Phase Inverter

I have not posted a video in ages, I think the last one was about 3 years ago, since then I have become much more knowledgeable but also more silly and overly confident....

So, here is an amp I have been working on for a number of years now.... and finally it seems that I have hit the sweet spot, with much troubleshooting I isolated an anonymous buzz to what I believe is an LTP(long tailed pair) inverter stage with grid ground, the solution, a near perfect symmetry Williamson phase...

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From: TheThermionicWarrior

Related topics : long tail pair phase inverter

New archtop and amp

Just test driving some new stuff. I finished building the amp a few days ago and have yet to build it's speaker cabinet. The archtop I finished a few weeks ago. The amp is an all octal amp with cathode biased 6L6's, a 6SL7 long tail pair phase inverter and two 6SQ7GT's for the preamp.

The archtop is an x-braced hand carved guitar inspired by Johnny Smith's D'Angelico. It has a custom made copy of my old DeArmond Rhythm Chief pickup. The audio is pretty terrible....it kept peaking out...

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From: JPCguitar

Related topics : long tail pair phase inverter

Peavey Classic 30 - Hand Wired Part 3 / Phase 2 circuits for Reverb and Tremolo

This is Phase 2 of my project to rebuild and hand wire my Peavey Classic 30. In this phase of the project I'm tackling the electronic circuits of the original reverb (with slight mod to feedback circuit to increase depth) and now using a new Accutronics/Belton 3 spring reverb. This reverb will be non-switchable as it is in the Peavey Delta Blues circuit. I also added the Tremolo circuit of the Peavey Delta Blues with slight mod to show speed rate via LED and input to the signal after new...

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From: Bobsbluesmusic

Related topics : long tail pair phase inverter

Phase Inverters....for the Common Man

This video describes the purpose and design of three different common phase inverter circuits: Split Load or Cathodyne, Paraphase, and Long-Tailed Pair. Simplified diagrams are used to explain how each circuit functions, and then then these circuits are demonstrated within schematics of classic tube amplifiers. The language is basic and simple analogies are utilized to clarify concepts.

If you enjoy videos featuring classic vintage tube amps, jukeboxes, home-built electromechanical marvels,...

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From: Uncle Doug

Related topics : long tail pair phase inverter / long tailed pair explained