which PCB material sounds best ???

mikelm · 29th December 2005, 07:46 PM

I'm just designing my first ever PCB....

Any opinions on which board SOUNDS best ?

Have you noticed any different sound qualities with different materials ?

lineup · 29th December 2005, 07:56 PM

Best if PCB makes as little sound as possible.
If it does, tell it to:

Shut up!

AKSA · 29th December 2005, 09:16 PM

Teflon substrate. Lowest dielectric constant, very high insulation resistance, so lowest parasitics.

Downside: Expensive, somewhat plastic, tends to 'flow'.

But good layout remains the most important factor.

Cheers,

Hugh

anatech · 29th December 2005, 09:32 PM

Experiment: Use ceramic standoffs and go point to point in sensitive areas. Air dielectric.

Now if you get all secretive and pot the entire works, It'll sound different.

-Chris

Steve Eddy · 29th December 2005, 09:43 PM

Quote:

Originally posted by mikelm
I'm just designing my first ever PCB....

Any opinions on which board SOUNDS best ?

Don't care much for the glass/epoxy or Teflon boards. I actually rather prefer FR-2, which is a paper/phenolic laminate. Have some cotton/phenolic I'm looking to experiment with but haven't used it yet. Can't find it in copper clad so I plan to use eyelets and point wiring for a sort of hybrid approach.

se

forr · 29th December 2005, 09:53 PM

An advice from Hiraga twenty years ago.
Best material for PCB : air. No PCB at all.

~~~~~~~~ Forr

§§§

mastertech · 29th December 2005, 10:23 PM

I'll tell you what base material i like best phenolic and various variants that i have
come across from france and germany they have enough strength not to cause
mechanical problems and are soft to frabricate (cutting,drilling,punching,etc)
i dont like fibre-class especially for protos and diy work but i guess these do have
their applications too

cheers

anatech · 29th December 2005, 11:35 PM

Almost everything I prototype and build is either FR4 or G10. All my older stuff I build in the 70's on phenolic (proto's) has warped. I always found the copper came off easily. Not good for prototyping. The epoxy boards don't seem to have that problem.

-Chris

Peter Daniel · 29th December 2005, 11:42 PM

You may check this post: http://www.diyaudio.com/forums/showt...953#post423953

pinkmouse · 29th December 2005, 11:43 PM

Mine's a purely practical reply, Mike.

For a new design, you will go through at least half a dozen prototypes to get it right. Use cheap phenolic to start, then, when the layout is right, that's when you can start thinking exotic.

al/has a strange suspicion that the thread will conclude with the most expensive material decided to sound the best...

29th December 2005, 07:46 PM	#1
mikelm diyAudio Member Join Date: May 2003 Location: England	which PCB material sounds best ??? I'm just designing my first ever PCB.... Any opinions on which board SOUNDS best ? Have you noticed any different sound qualities with different materials ?

29th December 2005, 07:56 PM	#2
lineup diyAudio Member Join Date: Dec 2005 Location: the north	Best if PCB makes as little sound as possible. If it does, tell it to: Shut up! __________________ lineup

29th December 2005, 09:16 PM	#3
AKSA diyAudio Member Join Date: Sep 2001 Location: Melbourne, Australia	Teflon substrate. Lowest dielectric constant, very high insulation resistance, so lowest parasitics. Downside: Expensive, somewhat plastic, tends to 'flow'. But good layout remains the most important factor. Cheers, Hugh __________________ Aspen Amplifiers P/L (Australia) www.aksaonline.com

29th December 2005, 11:35 PM	#8
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Gee ... Almost everything I prototype and build is either FR4 or G10. All my older stuff I build in the 70's on phenolic (proto's) has warped. I always found the copper came off easily. Not good for prototyping. The epoxy boards don't seem to have that problem. -Chris

29th December 2005, 11:42 PM	#9
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	You may check this post: http://www.diyaudio.com/forums/showt...953#post423953 __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC


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29th December 2005, 09:32 PM	#4
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Experiment: Use ceramic standoffs and go point to point in sensitive areas. Air dielectric. Now if you get all secretive and pot the entire works, It'll sound different. -Chris

29th December 2005, 09:53 PM	#6
forr diyAudio Member Join Date: Dec 2004 Location: Next door	An advice from Hiraga twenty years ago. Best material for PCB : air. No PCB at all. ~~~~~~~~ Forr §§§

29th December 2005, 10:23 PM	#7
mastertech Banned Join Date: Mar 2005 Location: Australia	I'll tell you what base material i like best phenolic and various variants that i have come across from france and germany they have enough strength not to cause mechanical problems and are soft to frabricate (cutting,drilling,punching,etc) i dont like fibre-class especially for protos and diy work but i guess these do have their applications too cheers

29th December 2005, 11:43 PM	#10
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Mine's a purely practical reply, Mike. For a new design, you will go through at least half a dozen prototypes to get it right. Use cheap phenolic to start, then, when the layout is right, that's when you can start thinking exotic. al/has a strange suspicion that the thread will conclude with the most expensive material decided to sound the best... __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

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