I think my headphones just got fried!

dmitriy167 · 31st August 2006, 02:53 AM

Hi,

I was listening to my Sennheiser HD 595 headphones today and left them plugged into my computer for about an hour with the volume turned all the way down. When I came back to them, the right channel was clearly louder than the left. I played with the cable (Sennheisers are notorious for bad cabling) and plugged them into my CD player to rule out my computer as the culprit. Same deal. I measured the DC resistance of both channels, and they are equal at 50 ohms. Finally, I did frequency sweep and white noise tests by ear, and confirmed that the left channel has no bass below 150Hz or so and a large, wide hole in the midrange. What could've happened?

,
Dmitriy

xplod1236 · 31st August 2006, 04:20 AM

Did you try flipping the headphones around to rule out differences between your ears? No idea what happened though.

dmitriy167 · 31st August 2006, 01:31 PM

I did try flipping them around, and the difference was still obvious.

dmitriy167 · 31st August 2006, 03:33 PM

Sorry for double posting, but I just put in a service call and will send them out today or tomorrow to a repair center. Does anyone know how long it takes for Sennheiser to repair headphones?

dietcoke · 31st August 2006, 07:49 PM

I would check the output from your computer for dc leak. I blew 2 pairs of earphones from running them out of my laptop before I realized to check the output.

dmitriy167 · 31st August 2006, 09:46 PM

Thanks for the tip, dietcoke. I'll definitely check that out and put a cap into the signal if I find it.

31st August 2006, 02:53 AM	#1
dmitriy167 diyAudio Member Join Date: Mar 2004 Location: NJ, USA	I think my headphones just got fried! Hi, I was listening to my Sennheiser HD 595 headphones today and left them plugged into my computer for about an hour with the volume turned all the way down. When I came back to them, the right channel was clearly louder than the left. I played with the cable (Sennheisers are notorious for bad cabling) and plugged them into my CD player to rule out my computer as the culprit. Same deal. I measured the DC resistance of both channels, and they are equal at 50 ohms. Finally, I did frequency sweep and white noise tests by ear, and confirmed that the left channel has no bass below 150Hz or so and a large, wide hole in the midrange. What could've happened? , Dmitriy

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31st August 2006, 04:20 AM	#2
xplod1236 diyAudio Member Join Date: Dec 2003 Location: On the couch	Did you try flipping the headphones around to rule out differences between your ears? No idea what happened though.

31st August 2006, 01:31 PM	#3
dmitriy167 diyAudio Member Join Date: Mar 2004 Location: NJ, USA	I did try flipping them around, and the difference was still obvious.

31st August 2006, 03:33 PM	#4
dmitriy167 diyAudio Member Join Date: Mar 2004 Location: NJ, USA	Sorry for double posting, but I just put in a service call and will send them out today or tomorrow to a repair center. Does anyone know how long it takes for Sennheiser to repair headphones?

31st August 2006, 07:49 PM	#5
dietcoke diyAudio Member Join Date: Apr 2006 Location: United States NY	I would check the output from your computer for dc leak. I blew 2 pairs of earphones from running them out of my laptop before I realized to check the output.

31st August 2006, 09:46 PM	#6
dmitriy167 diyAudio Member Join Date: Mar 2004 Location: NJ, USA	Thanks for the tip, dietcoke. I'll definitely check that out and put a cap into the signal if I find it.

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