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/diy/ - Do It Yourself


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388808 No.388808 [Reply] [Original]

I tripped on my PC headphones and ripped out the two wires soldered to the left earpiece speaker. So I have a green wire, a copper wire and two solder points. Does it matter which wire I re-solder to which point? The sound works with both possible combinations.

>> No.388817

For headphones, It doesn't really matter.
Just hook them up the same as the right speaker.

>> No.388861

>>388808
if they were speakers then yes it would matter because they would be out of phase

>> No.389064

>>388808
Yes it matters.

Give it your best guess. IF you get it wrong when you wear the headphones it will sound very wrong and make you feel like your head is going nuts.

>> No.389123

>>389064

bull. phasing of speakers only matters when the sound waves can interfere, which cannot happen if there is anything inside your head. and if your bass is so loud that your skull can cause interference, you have bigger problems.

>> No.389341

>>389123

You are wrong, sir. It affects the timing as well. That fraction of a second makes a huge difference, especially over headphones where spacial alignment/soundstage is much more obvious.

>> No.389358

>>389341
The propagation speed of the signal in copper wire is close to the speed of light. Physics will still beat audiofoolery.

>> No.389360

>>389358

You can see the 180deg phase error as a timing error.
It is said that the brain uses the relative timing differences between the ears to deduce the sound direction, so phasing might have some effect on sound.

I've never noticed anything with my incorrectly wired earphones, though.

>> No.389450

>>389360
It does, but the difference in wire lengths is several orders of magnitude too small to create a noticeable difference.

>> No.389452

>>389358
>>389360
(Also, if it really made a difference there would be extra coils of wire inside one cup to compensate for the different lengths.)

>> No.391356
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391356

>> No.391384

>>389123

>doesn't know what "frequency" is

Any shared signal between the right and left channels that are electrically out of phase will be interpreted as acoustically "null" by your brain. In fact, it's much MUCH worse with headphones than it would be with, say, a home stereo setup because the listening environment doesn't have a chance to impart node anomalies which might realign acoustical phase discrepancies. At higher frequencies (above 1khz or so) it's not as bad, but good luck getting a solid center image of any Male vocalist with phase-incoherent wiring.

http://www[dawt]soundonsound[dawt]com/sos/apr08/articles/phasedemystified[dawt]htm