JC, may I thank you on behalf of everyone on this forum for these posts. 🙂
I would all posts were as informative & useful. Respect.
Would this be the topology you pioneered in JC-3 all those years ago?
Actually there are small speakers that CAN take advantage of 1000W/channel but the little WATTs aren't among them. I agree with your 250W as nearly optimum for them.
Of course, though I would like to use 1000W/channel if trying to fool .. I mean persuade Marshy of the benefits of mini-monitors in a Blind Listening Test, there's always the possibility that he'd play the Garage Door just to kill anything small I might sneak in. 😡
JC, is this one of your most important criteria? How do you measure this? What test gear?
I dunno if the latest AP still allows you to look at the distortion residual. Or is everything shown as an FFT plot these days?
JC, any recommendations for these which aren't Unobtainium?
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JC, if I may have the temerity to ask a humble question .. Would you ever consider using a Regulated SMPS in a high quality power amplifier?
I knew you and some others would like this...
I have heard some boom-box systems (set up as an equilateral triangle) sound better than a lot of multi thousand dollar systems, because they worried about which resistor (or you fill in the blank) instead of the overall picture.
dennis
Dennis, thank you for sharing
Peter Sikking speaks the language of common sense (that’s what it is in the end) fluently.
A great “open source” contributor too.
George
And to sell your products: Invent evils and make believe YOU have find the turnaround.
(Of course, it is an artistic process, because if not, you would be asked for proofs).
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I use wires from Airbus for my sub. (a friend of mine, working for them) . They are semi-rigid twisted pairs, very strange looking and protected against vibration. While my room do not vibrate so much.
Why ? They conduct electricity.
(the isolation is made of several different foils, last one a thin plastic transparent, kind a Mylar).
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No they don't conduct. The only thing about Kevlar is if you have to cut it. Otherwise what's the problem?
The cables, conduct electricity, not the isolator, as expected 🙂
In fact, may-be they is some Kevlar, they are yellow and boring to denude.
Did i have to add Kevlar in my evil's list ;-)
In fact, may-be they is some Kevlar, they are yellow and boring to denude.
Did i have to add Kevlar in my evil's list ;-)
Right, he mentions JC Morrison a perfectly fine guy, but his approach is more like a painter, there are still painters BTW that grind their own pigments some of which are fabulously expensive. He has a large gallery of schematics many realized in the flesh. I think the engineering as art angle is overstated in engineering it would be like the process is the point.
If yet another triode connected pentode and some MOSFET's makes good sound that's fine. I have a hard time seeing a learning process in this approach.
Does that give you the audiophile desired plenty of 'air' in the sound ...? 🙂
But seriously, semi-rigid is good, very good; we don't want anything vibrating, apart from the speaker cones ...
Frank
Air is a problem, yes, when we listen to music: we cannot keep the window opened because the neighbors.
"All quiet on the western front." I guess we can move forward again. Unfortunately, what I am now working on, (improvements to power amps) is confidential, but I will say that I am sticking with the complementary differential jfet input that I have used for so many decades, now.
If anything, I think that RFI buffering is more important than ever. Heavy Class A operation is VERY IMPORTANT, as well.
I still have not found any IC that I would use in replacement for good discrete design.
They are just too compromised in idle current (too low) for me to be comfortable with them.
People are always asking me for cheaper and easier to build designs. Unfortunately, I don't have any. It is not what I do. I try to make the best, most elegant designs I can think of, in respect to the price point that I must work to. I'll leave IC's mostly to mid-fi, where people suppose that everything sounds the same, anyway, as they have been told by others. '-)
If anything, I think that RFI buffering is more important than ever. Heavy Class A operation is VERY IMPORTANT, as well.
I still have not found any IC that I would use in replacement for good discrete design.
They are just too compromised in idle current (too low) for me to be comfortable with them.
People are always asking me for cheaper and easier to build designs. Unfortunately, I don't have any. It is not what I do. I try to make the best, most elegant designs I can think of, in respect to the price point that I must work to. I'll leave IC's mostly to mid-fi, where people suppose that everything sounds the same, anyway, as they have been told by others. '-)
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