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Old 13th September 2003, 05:18 PM   #1
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Default Controversial topic - Components vs. Design

I have started this thread in hope of moving the ever continuing
discussions about Components vs. Design away from the
normal threads.

To get you all up of your chairs, her is my oppinion:

- Magic caps do not exist!
- Transistors from SANKEN are not better than many others!
- The Schematic design (and PCB-layout) are more important than the choice of components!

Ok folks
Let debate
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Old 13th September 2003, 05:27 PM   #2
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Talking I forgot

Symmetrical designs are best!
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Old 13th September 2003, 05:28 PM   #3
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AudioCaps Rule!

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Old 13th September 2003, 05:31 PM   #4
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Thanks Peter

But only a short thread about caps for crossovers......
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Old 13th September 2003, 05:43 PM   #5
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Well.... I will agree completely that there aren't magic caps.
Partially that arrangement and placement is more important than parts selection, but, generally, better parts make a better amplifier.

As for your jab at SanKen, no. I have a great respect for SanKen transistors and ICs. I'm not going to say that they're better or worse than many others, because that's simply a matter of opinion and not fact within the realm of diyaudio.
Generally, I find that SanKens are very nice transisors, however, I do still like Motorola very much as well.

Hehe, anybody want to get into a debate over Westinghouse 3055s?
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Old 13th September 2003, 05:52 PM   #6
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Default Re: Controversial topic - Components vs. Design

Quote:
Originally posted by ACD


- The Schematic design (and PCB-layout) are more important than the choice of components!
Hi,

In fact both are important. I donít see your point here, an educated electronic engineer uses that components which are appropriate for the goal intended. And yes you have normally many choices.

But electronics is in anyway useless if the goal it needs to serve is not properly defined.

Cheers
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Old 13th September 2003, 06:16 PM   #7
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Default Pjotr

Quote:
In fact both are important. I donít see your point here, an educated electronic engineer uses that components which are appropriate for the goal intended. And yes you have normally many choices.

But electronics is in anyway useless if the goal it needs to serve is not properly defined.
This was ment in sonic ways, not functionally....
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Old 13th September 2003, 08:25 PM   #8
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As for BJT's, IMHO the best power transistors now are Toshiba's 2SA1943/2SC5200. Why? Because of the unbeated linearity of Ic = f(Ib) curve, regardless other parameters, that are perfect, too.

Pavel
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Old 13th September 2003, 08:47 PM   #9
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Quote:
Originally posted by ACD

This was ment in sonic ways, not functionally....
well in "sonic ways" a good asymmetrical design is as good as a symmetrical one
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Old 13th September 2003, 09:04 PM   #10
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Default Re: Controversial topic - Components vs. Design

Quote:
Originally posted by ACD

<snip>
- Magic caps do not exist!
<snip>
- The Schematic design (and PCB-layout) are more important than the choice of components!
Magic caps do not exist, however caps should be chosen carefully. Some are much better than others. Frequency response, Inductance, ESR, and variations in capacitance vs voltage are all important parameters. When designing, you must weigh all of these parameters into the design.

Board layout can be critical.... ...however stuffing a perfect board with the poorest of components isn't recomended! It takes good components to to make a good circuit, and a good board layout to make it work in the real world!


-Dan
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