[ihaveworms]

On my DT 770 Pro 80ohms, when there is a lot of bass in the sound I hear crackling on the left side. This happens when there is a lot of bass and never occurs on the right side. What would be the cause of this?

 

[g500tec]

Probably just a hair. There are many threads explaining how to fix this. Here's one:

http://www.head-fi.org/forums/f4/wie...770pro-281547/

 

[ihaveworms]

I actually did take the ring out and the foam pad out and put it back togeather, but I still have that problem.

 

[m0ofassa]

have you been playing poorly balanced music at loud volumes? The phone could be damaged. Could also be a cable problem...

 

[ihaveworms]

No, i don't play music loud anything for that matter. It starts to make this bad 'sound' around 25hz and ends at about 150hz-200hz.

 

[ihaveworms]

Anyone want to comment with the frequency of the problem?

 

[leeperry]

so did you open that pet shop yet ?

you might as well recable it while you're at it, I just did....and when I tried to add a ferrite bead on the cable it did make the right side very slightly louder

...meaning EMI or bad cabling might be the cause too, the stock cable being of very low quality(unshielded)

 

[ihaveworms]

I don't think it is EMI, as there isn't any source around it that could be causing it.

Edit: Well, I put a large peice of anti static plastic that I believe has anti EMI properties and folded it many times and put it ontop of my soundcard (my soundcard is right beside a video card). I am not sure if I am imagining things, but after running the same tests with the frequency generator I was using, I don't seem to hear that sound anymore. I will give it a little while longer to see if it actually did fix it.

 

[leeperry]

well, yeah PCI sound cards are evil EMI-wise.

feel free to translate these pages w/ babelfish :
DOS/V POWER REPORT | Impress Japan
DOS/V POWER REPORT | Impress Japan
DOS/V POWER REPORT | Impress Japan
DOS/V POWER REPORT | Impress Japan
DOS/V POWER REPORT | Impress Japan
DOS/V POWER REPORT | Impress Japan
DOS/V POWER REPORT | Impress Japan
DOS/V POWER REPORT | Impress Japan

 

[m0ofassa]

Quote:

Originally Posted by leeperry /img/forum/go_quote.gif well, yeah PCI sound cards are evil EMI-wise.

I disagree. With a bad power supply then yes. PCIE is more susceptible to EMI IME (especially on IEMs...

). a PCI soundcard is alright for an entry level DAC.

 

[leeperry]

Quote:

Originally Posted by m0ofassa /img/forum/go_quote.gif I disagree. With a bad power supply then yes. PCIE is more susceptible to EMI IME (especially on IEMs... ). a PCI soundcard is alright for an entry level DAC.

well of course, some properly engineered PCB's can yield very good THD/SNR measurements....but most of them don't.

high quality PCB's cost, like HQ power supply circuits/etc etc

a Lynx2B will give better figures than an X-Fi

look at the charts on the jap site

 

[ihaveworms]

Well it looks like it is the headphones after all. I am probably just going to send them back for repair as they are still under warranty.

 

[Bandeira]

Quote:

Originally Posted by ihaveworms /img/forum/go_quote.gif Well it looks like it is the headphones after all. I am probably just going to send them back for repair as they are still under warranty.

Hello,

Did you have any update son your problem. My querstion is because i have the same problem of your in me dt770pros

Cheers ,