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Old 29th January 2004, 04:52 PM   #1
Bricolo is offline Bricolo  France
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Default The sonic character of different PCB materials (or P2P)

I've read so many things here about the sound of PCBs, veroboards, P2P, dead bug style... and each one in contradiction with the others.

Is there any theory behind this? Or has anyone compared?
I wonder what the sound difference is between the same circuit, with exatly the same parts but just another layout.

Veroboards are told to be "only good for prototypes", do they sound worse?

Has anyone compared?
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Old 29th January 2004, 05:02 PM   #2
markp is offline markp  United States
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Vectorboards do sound worse than soldered methods due to the two small contact points between component and vectorboard clip contact(the thing you stick into). Corrosion and dirt can do bad things to contacts, like create resistance or diode like points. It also limits current capacity. As far as boards, use FR-4 with 2 ounce copper and you'll be happy.
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Old 29th January 2004, 05:59 PM   #3
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Quote:
Vectorboards do sound worse than soldered methods
No idea what is a 'vectorboard' but if you mean veroboards they do actually take solder.

IME veroboad with round pads (not stripboard) and P2P sounds generally better than standard PCB to some extent due to the choice in hookup wire and possibly the shorter, more efficient connections. Some are annoyed with the lack of neatness but i personally build projects to listen to and not for my wife to admire.

Still, P2P is no guarantee for superior sound and may even be detrimental in digital circuits.

There was some interesting discussion where Jonathan Carr mentioned the effect of different dielectric materials in PCBs.

If possible i try to not use veroboards at all. Whether the reasons are electrical or mechanical (the boards, especially with large surface areas tend to pick up lots of vibrations) the completer absence of boards in P2P seems beneficial.

One needs to be involved in audio manufacturing in order to conduct real controlled experiments. Otherwise it just takes too much time and effort.
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Old 29th January 2004, 06:04 PM   #4
Bricolo is offline Bricolo  France
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I usuallt use stripboards, because I find them very easy to use.
What's wrong with them?
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Old 29th January 2004, 10:36 PM   #5
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Default Re: The sonic character of different PCB materials (or P2P)

Quote:
Originally posted by Bricolo

I wonder what the sound difference is between the same circuit, with exatly the same parts but just another layout.

Well according to the article that came out with my kit amp, they tried many different layouts, with widely varying distortion figures depending on which layout they used. They did note that the particular circuit was very sensitive to layout changes, so I guess, depending on the circuit, the answer is yes, the layout can make a difference.

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Old 30th January 2004, 05:21 AM   #6
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... just take the feedback from the wrong place at the output and you may get increased distortion. Pcb layout is indeed important. Just compare this discussion.
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