Crickey it has been many years since I saw this circuit done in the late 1960s by Mullard using Germanium Transistors. Shame it is DC Blocking and thus limited bass. The choke acts like a constant current so why not use a semi conductor constant current circuit and make it lighter and have a better ...

karatestu wrote: ↑Thu Sep 03, 2020 12:12 pm Silent through high efficiency speakers Must be a good layout with care given to earthing & routing of signal and power.

I try but not much experience as I have been doing it for only ?? Yrs and still learning I hope.

http://www.enjoythemusic.com/magazine/e ... Review.htm

Thank you all had a week in Westward Ho, lovely place , shame to come back to London sorry that was rude,

BIG op Amp then .

Not sure on what you are asking, if it can you add a PSU Dynamic to this yes you can but on testing on the right heatsink there was no need. Except you could push it to 50W.

All leaded components no SMD (well 2 it you want to use them) simply to build. Better BW a smidgen, mount into mod shop case. But best of all one can be a master and you can have 10 slaves with a bigger heatsink and huge transformer you can make a 300W mono, OK OK 1800W of heat but no logs or coal t...

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NEW SECA PCB Power can be set from 14W - 40W depending on heatsink. The PCB's are £60 each. Please contact Mr Brown on http://https//www.abcaudio.biz/ The PCB is now leaded components and should be easy to assemble. Down load cct here https://seca.freeforums.net/thread/274/new-seca-kit-easy-build ht...

https://vdocuments.mx/

Above is web page I found and forgot about books for free.