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Buying HD 650, trying to figure out how to power it - Page 2

post #16 of 21
Quote:
Originally Posted by Asterra View Post

Hmm.  So it comes down to.. The convenience of portability vs. the availability of Dolby Headphone.

 

...

 

I just checked and it seems my motherboard (Gigabyte EX58-UD5) has Dolby Headphone built-in (well, available in an update).  That sure complicates things.  Decisions, decisions.  At least now I know it's going to be one of these two solutions.  Three hours ago I was blind.

 


You could throw more money at the problem and get an Audio-Technica AD700 for gaming. Plug it straight into your motherboard, it's easy to drive.

 

That said, I don't think your motherboard actually supports Dolby Headphone. The Gigabyte website says Dolby Home Theater. Dolby Headphone is a surround sound emulator, that allows downmixing of 5.1 or 7.1 channel audio into two channels while maintaining directional sound.

 

I suppose it comes down to this: How often do you see yourself gaming, and how often do you see the need for (trans)portability? Both options are good and cost about the same, so prioritize their strengths.


Edited by Head Injury - 9/30/11 at 7:25pm
post #17 of 21
Thread Starter 
Quote:
Originally Posted by Head Injury View Post

That said, I don't think your motherboard actually supports Dolby Headphone. The Gigabyte website says Dolby Home Theater.


Well, I haven't looked into the matter thoroughly so I'll just point you to what I found:

 

http://forums.overclockers.co.uk/showpost.php?p=17555663&postcount=12

 

post #18 of 21
Quote:
Originally Posted by Asterra View Post

Well, I haven't looked into the matter thoroughly so I'll just point you to what I found:

 

http://forums.overclockers.co.uk/showpost.php?p=17555663&postcount=12


Interesting. Download the drivers and try it out with whatever you have now.

 

I don't know how powerful or noisy your motherboard is. If it has DH though you could always get a lower impedance headphone for gaming in the future.

post #19 of 21
Thread Starter 
Quote:
Originally Posted by Head Injury View Post

Interesting. Download the drivers and try it out with whatever you have now.

 

I don't know how powerful or noisy your motherboard is. If it has DH though you could always get a lower impedance headphone for gaming in the future.


I'd try it if I had something to try it with.  Not that I meant to be misleading, but none of my gaming is in fact on the PC itself, though the PC handles all of the audio going to my headphones.  I've ordered the parts needed to route 5.1 audio from the 360 to the PC, but until then, there's actually no way to test things.

 

The motherboard's onboard audio is very noisy.  Not in terms of basic hiss so much as how much parasitic noise it allows to bleed in, particularly from drive access.  If I raise the system volume above 50 (as I often do, as my HD265s feature 150 ohms impedance), the problem stops being something easily ignored.

 

post #20 of 21
Thread Starter 

I went with the soundcard, reasoning that if portability ever becomes a necessity, it's just $88 bucks away.

 

I'm happy with this decision because I reckon that despite the considerable hurdles, I will eventually be able to get 5.1 from the 360 to the PC, which ought to prove interesting with the Dolby Headphone option.

 

Also, I never was too happy with the prospect of "only" 16-bit audio.  Yes, I see that the noise floor isn't that high (in theory), but in practice, it doesn't take much imagination to recognize scenarios where one could hear the hiss without destroying their ears with too-loud audio.  Recordings with low amplitude, for example - stuff which would inspire one to turn up the volume to compensate.

 

The only remaining drawback is that I must now research which "opamps" to replace on the card, which opamps to replace them with, and how to go about doing this.  It seems universally accepted that this is a good idea, or even a must.

 

post #21 of 21
I'm reviving this thread, since I'm looking to power my HD650's. Would an amp with the below output specs be sufficient? Based on the above comment that 16 mW drives them to 110 dB and the exponential curve relationship between power and volume, I should be getting more than enough volume and bass control, yeah?

165mW(RL=32Ω,THD+N=1%)
110mW(RL=300Ω,THD+N=1%)
70mW(RL=600Ω,THD+N=1%)
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