Author Topic: EL84 amp concept  (Read 15129 times)

Offline Hi-Phibian

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EL84 amp concept
« Reply #60 on: February 14, 2020, 07:17:44 AM »
Random crisis cross wiring sounds better than electrons marching neatly next to each other tuning each other nonsense. 


Very cool. 
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Offline Family_Dog

Re: EL84 amp concept
« Reply #61 on: February 14, 2020, 07:26:30 AM »
Factual? Nah...!


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Offline Mars

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Re: EL84 amp concept
« Reply #62 on: February 24, 2020, 11:19:23 AM »
Nice job El Sid. Those OPT's looks very good!
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Offline El Sid

Re: EL84 amp concept
« Reply #63 on: February 25, 2020, 10:58:51 AM »
Looking good El Sid... but please tidy up that wiring and post a new pic!!  :teach:

-F_D

 :ROFLMAO: F_D I am never going to be one of those super-neat builders (tried to find the pic someone posted a while ago of an ultra-tidy amp), but what will be tidied up are the black signal wires (temporary), the earth wire (earth lift still to be done) and the clusterf%^k of resistors on the rectifier (top centre).

Random crisis cross wiring sounds better than electrons marching neatly next to each other tuning each other nonsense. 

Very cool. 

I agree with you Hi Phib - no need to maximise the coupling between wires. I also vaguely remember something from when I studied about radiation from sharply bent corners, but that may have been more of an RF thing. Anyway, look at e.g. old Philips radios and it looks like a bowl of spaghetti in there.

Nice job El Sid. Those OPT's looks very good!

They do look very cool, but I wonder how well they perform in comparison with transformers made from modern materials? My guess is that those transformers are from the late 50s or so. They unfortunately don't have ultra-linear taps.

However, I am so chuffed with this concept that I want to build a new, bigger amp, possibly EL34, so at some point I may be contacting you for transformers...

Offline Family_Dog

Re: EL84 amp concept
« Reply #64 on: February 25, 2020, 03:19:13 PM »
Quote
I agree with you Hi Phib - no need to maximise the coupling between wires. I also vaguely remember something from when I studied about radiation from sharply bent corners, but that may have been more of an RF thing. Anyway, look at e.g. old Philips radios and it looks like a bowl of spaghetti in there.

While I do harp about neatness of wiring for audio amplifiers, I agree, RF does not bode well with neat and tidy clusters. I remember the old Philips eggbox radios (panels shielding the various stages under the chassis) and neatness certainly was never a consideration for any radio at that time, Philips or otherwise.

But I digresss: I shall personally be demanding closeups of the underview Mr. Sid, be prepared   :rubhands:


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