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flinkenick's 17 Flagship IEM Shootout Thread (and general high-end portable audio discussion)
Jul 20, 2019 at 2:26 PM Post #17,206 of 39,414
Jul 20, 2019 at 2:43 PM Post #17,207 of 39,414
fiascogarcia said:
That's perfect for your next build project!
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Pithy's probably already incorporated it. Rainbow Dildo faceplates and with an additional vent in his head with a rainbow dildo filter ala Apex.
 
Jul 20, 2019 at 11:44 PM Post #17,209 of 39,414
I have a rather annoying question, to my knowledge, iBasso players and Sony players don't connect their fifth pole to a circuit ground in the trrrs jack so active shielding doesn't actually work. Are there any players that do?
 
Jul 21, 2019 at 10:18 AM Post #17,212 of 39,414
pithyginger63 said:
I have a rather annoying question, to my knowledge, iBasso players and Sony players don't connect their fifth pole to a circuit ground in the trrrs jack so active shielding doesn't actually work. Are there any players that do?
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In theory, common mode rejection would render a (passive but earthed) shield superfluous.I suppose it would be easy enough to open it up and connect it to the chassis ot the ground lug of a TRS connector if it has one..
 
Jul 21, 2019 at 5:23 PM Post #17,213 of 39,414
so common mode noise rejection works with a 2 conductor per channel circuit? I thought there had to be 3 per channel? IE, the only way to shield a 4 core IEM cable would be physically? I'm asking and don't know for sure.
 
Jul 21, 2019 at 5:49 PM Post #17,214 of 39,414
It's not about the # of cores in a cable.It has to do with whether it's a truly balanced circuit. If so, common mode rejection is in effect whether there's a shield or not. Not an issue at the output of a dap. Shielding an iem cable is akin to shielding a speaker cable. All it does is add capacitance and reactance to the load. This is a bit over simplified but you see grounds/shields on other balanced cables to maintain a proper earth throughout an electronics system but IEMs are just like speakers and not earthed. I would also argue that the overall of a device is significantly more controlled by other factors than whether it's balanced or not.
 
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Jul 21, 2019 at 5:55 PM Post #17,215 of 39,414
Is it fair to say then that any noise being picked up from the IEM cable (like an antenna) would be nulled out by the balanced circuit inside the DAP, since it would become 'common' noise?

edit: rather the IEM cable becomes part of the balanced circuit - which is why any noise picked up on it can be nulled out?
 
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Jul 22, 2019 at 9:03 AM Post #17,216 of 39,414
"Hmmm... haven't dropped any good teasers in a while... let's see what I've got in my photo library..."

"Ahh, this should do." :wink:

FourteNoirBox-S-1.jpg
 
Jul 22, 2019 at 11:36 AM Post #17,218 of 39,414
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Jul 22, 2019 at 1:29 PM Post #17,219 of 39,414
Is the Noir any different from Fourté aside from color ?
 
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