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Dear all balaced headphone wanna be head-fier... - Page 4

post #46 of 108
Quote:
Originally Posted by apatN View Post
I know that, yes. The other way round does work, right? I mean I seen headphones terminated to 4 pin xlr that go into single ended amps by means of an adapter.
Yes the other way around works.
What you do then is you take the two wires that normally carry the inverted signal (when you drive the phones in balanced mode, from an amplifier that outputs a balanced signal to your phones) and combine them to the sleeve of the TRS and thus these wires are then used as common ground by the single ended amplifier you plug them in.
post #47 of 108
Quote:
Originally Posted by apatN View Post
I know that, yes. The other way round does work, right? I mean I seen headphones terminated to 4 pin xlr that go into single ended amps by means of an adapter.
Yes this works just fine. because you have more paths to the drivers than you have paths coming from the amp. However the inverse is not good.
post #48 of 108
I never really thought about it. I simply assumed that it was possible to go from a TRS to a balanced amplifier with an adapter.
Thank you.
post #49 of 108
Thread Starter 
Why don't you guys just try it, seriously? Keep debating endless and no conclusion from experiments seems to be pointless. At least someone should try and say it out. I'm not good in English so I couldn't explain well for technical terms but headphone uses 4 conductors by default (Even you see its end as 3 but from driver's view, its 4 and it works with balanced)

Again, headphone uses 4 conductors for balanced system but 3 channel jack lures you out from truth that each driver has 2 channel and 2 drivers make it 4
post #50 of 108
post #51 of 108
posting pics would be much better.
post #52 of 108
If you hook up a balanced amp such that both channels negative channel are connected to headphone's shared ground, there's a good chance you'll fry your amp.
post #53 of 108
Quote:
Originally Posted by WindowsX View Post
Why don't you guys just try it, seriously? Keep debating endless and no conclusion from experiments seems to be pointless. At least someone should try and say it out. I'm not good in English so I couldn't explain well for technical terms but headphone uses 4 conductors by default (Even you see its end as 3 but from driver's view, its 4 and it works with balanced)

Again, headphone uses 4 conductors for balanced system but 3 channel jack lures you out from truth that each driver has 2 channel and 2 drivers make it 4
we all understand that each driver has two connections - i think everyone from age 3 understands that you have to complete a circuit in order to activate an electronic device

the point is, without 4 discrete channels, you cannot possibly run balanced. the closest you could get would be to connect the L+ to the left driver, R+ to the right driver, and then run either R- or L- to both drivers - i cant even begin to imagine the distortion, mud, and NOISE this would create in the mismatched driver.
post #54 of 108
Here, simple explanation. It's probably not technically right; don't sue me.

Single ended: power goes in to the headphones through R and L, and both go out through the same GND line.
Balanced: power goes in to the headphones through R+ and L+, and both go out through their dedicated special R- and L- lines.
post #55 of 108
I agree with this. From my impressions reading through this forum and the headphones forum, getting a balanced Amp, DAC is quite an endeavor and costly one at that.

If personally I was ever to purchase balanced source/amp, then I would budget in getting headphones balanced as well. As I also understand that getting a headphone reterminated it not always enough, but rather recabled properly to ensure its balanced, especially a headphone like mine which is single sided. Aside from the expenses, doesn't seem to make sense to drive a balanced, 4 channel into a single ended headphone, just seems like its defeating the point of having a balanced amp.

Interesting thread nevertheless. I learned a lot from Grawk, m1abrams, and Kees. Good to know its good chance hazardous to the amp to do what you suggested WindowsX.

BTW WindowsX, I have replaced the plug on my headphone, and what I saw was three wires. One for each driver and the third was the ground. I didn't see four, but then I don't understand this entire thread completely either.

Quote:
Originally Posted by krmathis View Post
I don't get it!
Why drop out the last part (cable connector), when you already have a balanced amplifier (4 channel)?

/me think the OP have not read his balanced audio homework!
post #56 of 108
Quote:
Originally Posted by mbd2884 View Post
I agree with this. From my impressions reading through this forum and the headphones forum, getting a balanced Amp, DAC is quite an endeavor and costly one at that.

If personally I was ever to purchase balanced source/amp, then I would budget in getting headphones balanced as well. As I also understand that getting a headphone reterminated it not always enough, but rather recabled properly to ensure its balanced, especially a headphone like mine which is single sided. Aside from the expenses, doesn't seem to make sense to drive a balanced, 4 channel into a single ended headphone, just seems like its defeating the point of having a balanced amp.

Interesting thread nevertheless. I learned a lot from Grawk, m1abrams, and Kees. Good to know its good chance hazardous to the amp to do what you suggested WindowsX.

BTW WindowsX, I have replaced the plug on my headphone, and what I saw was three wires. One for each driver and the third was the ground. I didn't see four, but then I don't understand this entire thread completely either.
there are 3 at the end of a TRS wire, but the ground wire you see is a common ground that is actually the union of two wires further downstream: each driver has a signal wire, and a ground wire, hence the 4 wires WindowsX is referring to. however, these are soldered together to make them a single, common ground once they reach the plug
post #57 of 108
Thread Starter 
Quote:
however, these are soldered together to make them a single, common ground once they reach the plug
And it sounds a lot better than using SE jack output.
post #58 of 108
Quote:
Originally Posted by WindowsX View Post
And it sounds a lot better than using SE jack output.
what i just described IS a se jack
post #59 of 108
Thread Starter 
Oh, maybe I forget the part of using adaptor to make shared g to separated ones again connecting to balanced source.
post #60 of 108
Quote:
Originally Posted by Maxvla View Post
x2 on both topics
x3

This thread is spurious anyway. If you are going to buy a balanced amp and can afford it, you can afford and owe it to yourself to reterminate you're headphones to be balanced.
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