braided output wires?

Ingber · 858

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Offline Ingber

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on: February 26, 2025, 10:16:07 PM
Hi,

The output wires (the black ground wire, red and white wires connected to the headphone jack) typically lay parallel, close together and close to the chassis.  What I have read so far is that keeping wires close to the chassis is recommended but having signal wires parallel is not. In addition, it seems that keeping any possible loop area between ground and signal wires as small as possible is also recommended. Would it be an option to

1) have the red and white output wires further apart but therefore farther away from the chassis, or
2) braid the red, white and black output wires as far as possible starting at the headphone jack, similar as this is done for the input wires,
3) not to worry about it because it makes no audible difference?

Best regards,

Ingber

Ingber Roymans


Offline Paul Birkeland

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Reply #1 on: February 27, 2025, 04:36:53 AM
The driving impedance ahead of these wires is very, very low, and you typically have a load that's a few hundred ohms sitting across the outputs, so the benefits of additional dress beyond what's directed in the kit are relatively moot. 

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Doc B.

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Reply #2 on: February 27, 2025, 04:52:17 AM
To add to what PB posted (he always beats me by like ten seconds and then I have to edit!)

If you've never built a kit before following instructions precisely is the smart plan, because thousands of completed kits prove they work. If you have some building experience and think it will make a difference - the only way for you to know is to try it. Of course you will have to build it both ways to compare, to know for sure. And always bear in mind that the new approach may introduce some new problem rather than solving one you are assuming needs to be solved. That's all part of the design process. Ask me how I know.

Generally the requirements for noise rejection by the circuit ease up as the signal level increases.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.