[sdiy] 45 vs. 90 degree pcb traces

Vladimir Pantelic vladoman at gmail.com
Fri Feb 14 20:48:46 CET 2020


did signals on the red tape side sound warmer?

On 14.02.20 20:39, Harry wrote:
> Ok most of that is hooey! The curved traces were because the layouts
> were done with black "crepe" tape on Mylar. Curves are easy to do. That
> was superseded by red/blue Mylar tape which does not do curves. In
>  short, for audio frequencies there will be no difference. A good two
> layer or multilayer board would way outperform anything from the 1970's. 
> 
> Sent from my iPhone
> 
>> On Feb 14, 2020, at 2:10 PM, Harry <hbissell at wowway.com> wrote:
>>
>> 
>>
>> Sent from my iPhone
>>
>>> On Feb 14, 2020, at 1:50 PM, Jimmy Moore <jamoore84 at gmail.com> wrote:
>>>
>>> 
>>> This came up on the AH "behringer RD-6" thread:
>>>
>>> >>Until the PCB traces are curvy (like on a 2600 or SEM) it's never
>>> going to sound authentic.   Electrons don't like corners.
>>>
>>> I had picked up similar folk knowledge from my first engineering job
>>> working alongside techs, EE's, and designers.  I went looking for a
>>> more technical explanation on why this is the case, and it turns out
>>> it is NOT: 
>>>
>>> https://resources.altium.com/pcb-design-blog/pcb-routing-angle-myths-45-degree-angle-versus-90-degree-angle
>>>
>>> (Notable exceptions being RF, high speed, or high voltage layouts)
>>>
>>> This and another
>>> <https://electronics.stackexchange.com/questions/226582/pcb-90-degree-angles> resource
>>> debunk the pcb corner myth on EMI effects.  
>>>
>>> Is there any other tangible (audible) impact this decision could have
>>> for music electronics?  I think not, but I'd love to hear from other
>>> more experienced engineers on this (hopefully not tiresome) topic.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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