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Thanks Jozua. Are there any persons who would like to own a Performer as shown above? They can order it now, and collect it from the expo. PM me to discuss. This is the inspiration and rationale for the Performer: As you can see the 70watt and the 100W output is possible with PSU voltages of...

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I agree with you on CAN Tago Mago. What a trip. Listened a lot to it in the late 80's.

Next up... Power transformer design Specs: 160VA (flux 0.9 Tesla) EI114 core 60mm stack Primary 240/250VAC Secondary 1 : 400VAC 240mA Secondary 2 : 5V 3A Secondary 3 : 5V 2.5A Secondary 4 : 5V 2.5A Secondary 4 : 6.3V 1.2A Checking the design in PSUD2 gives the following: Voltages seems to...

Hi Yougan We restore vintage Marantz. We have served client from Durban recently. You are welcome to give us a try. You can courier to our workshop in Paarl.

"Gaucho" was my first Steely Dan listen. What a masterpiece. Now I listen to most of Steely Dan but also love the New York Rock and Soul Revue:love:

As far as I know that amplifier was sold to a Korean gentleman who lives in Wales! Apparently he is very happy with his 2A3 amplifier.

We have sold three units of the Performer, and here are some photos and specifications: This was the first iteration of 50 watt per channel fixed bias KT88 push-pull amplifier. In a rather unique configuration we designed an integrated amplifier with a tube phono stage in the front. 2 x...

1 year on the tubes, 3 years on the amp itself.

The lug that I suggest to use is the second lug from the end on both tagstrips: Here is the intitial strating point again; That is better. Next we mount the cathode bypass caps. They are attached to the cathode resistor here: Here is an example from another build I did. Both cathode...

Next the power tube's grid leak resistors. Find the 4 x 270K 2W resistors (1W is good too) Here is a photo from another amp showing the position the grid leak resistors (470K in this case) have in the assembly. The grid leaks are soldered onto pin 6 and the ground bar Next we mounted...

(y) Bongo Fever (with Captain Beefheart)

I would like to see that list. I have a pile of Zappa & Mothers albums and I do not know where to start.

What a task! List your favourite 10. Luckily greatest hits were excluded, and that brings forward my gripe with the music industry and the packaging of music: albums with a few good tracks and the rest makes you want to throw the album in the bin. I decided to look at my listening journey...

Would you use a CLC filter, or CRC after the converter module?

This also means I can do the 807 SE desktop amp comfortably with 1625 tubes and 12SH7 driver. Same current draw as 6V6 PP, but a little less power. Heaters driven by 12V direct. I am also toying with the idea of fixed bias for maximum efficiency of power consumed/music output. If the 6V6 can...

I agree about the 6V6 in PP. One can put each pair of PP tubes in series, and then use the midpoint as the virtual center tap. I would prefer to use a 12v type preamp tube; thus 12A*7. If I have a 12SL7 pair, that might also work. The 6080 filament draw of 2.5A puts me off. HT can be done with...

I guess it is time to move tube amplifiers off the grid. Is it possible? Is quality of audio affected by battery operation? Can it be done without electrocuting oneself? Design issues to be addressed: 12 DC operation or 24V DC? high efficiency - maximum music while drawing minimum current...

Next we fit the cathode resistors Find the 4 x 820 ohm 5 watt resistors: Here is an example of how I do it: Seen from other side: Checking before soldering: Earth bar fitted: Next the grid stopper resistors for G1. Find the 4 x 1K ohm 2 watt They are mounted from pin 6...

Next we move onto connecting the output transformer leads to the output tube sockets: Mount the screen grid stoppers. Grab the 1K 5 watters: They are connected to the tagstrip and pin 4 of the tube socket. Anode and screen grid leads are attached to the output tube sockets coming...