Question about Ultrasone Proline 650 Professional Headphones

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Posted on Aug 07, 2008

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I need to know how long to keep the headphones on charge

Kathleen, what do the user guide instructions list as the normal charging time? Is there a light that changes colour when the headphones are charged?

You haven't listed the make and exact model of headphones in your question. Please add these details.

May 24, 2015 | Headphones

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Why compucessory headphones not working

Did you plug them into the headphone jack or the microphone jack on your computer ? Usually those 2 jacks are next to each other and it is easy to confuse them. If this is not the problem, maybe the headphones have a switch to turn them on (this would be unusual, but you never know...). Hope this helps.

Nov 16, 2014 | Compucessory Headphones

2 Answers

Weird Headphone problem - vocals disappeared

The most likely explanation is that the ground connection of the headphone jack has become disconnected. This causes the mp3 headphones themselves to subtract the two channels from each other in a hardware kind of way. Again, I could explain this in more detail but I also happen to have years of experience with audio hardware, so you can just trust me on this smile.gif Try gently nudging your headphone plug to see if you can't get normal sound. If you can, it's certainly a bad contact. I wouldn't say this is a "normal" type of failure for an audio player, but it's certainly not uncommon.

Mar 31, 2012 | Beyerdynamic DT 770 PRO Professional...

1 Answer

When the cord is plugged al l the way in its phasing and has little bass response. Only when plugged partially in or half way do they go back to normal

If you click my user name you will find a tip about headphones and plug problems. HOWEVER first check it's not the device socket that is faulty, by trying a different pair of headphones.

Apr 19, 2011 | Ultrasone HFI-550 Consumer Headphones

1 Answer

I need to solder a new 1/4" jack on my ultrasone HFI-700s. The wire colors are black, red, and blue. Which is the ground wire? Which is right, and which is left?


Black is ground

Red is right channel

Blue is left channel

The wires are probably enamelled so scrape the ends a little with a scalpel before you solder to get a good connection.

Here is a picture of a TRS (Tip Ring Sleeve) jack plug which may help you:

Please rate my answer if this is helpful.

Many thanks,


Mar 05, 2011 | Ultrasone HFI-700 Consumer Headphones

1 Answer

Right Bose In-ear cord separated from headphone

i know that these are very exspencive headphones, they were 100 dollars, and they are great. unfortunitally, these cannot be fixed without getting new headphones, sorry!!!

Mar 17, 2009 | Bose in-ear headphones - Black with...

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XBOX turtle beach headphones

You could contact their support to see if they could help you.

Jul 09, 2008 | Voyetra Turtle Beach Turtle Beach Ear...

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I need to get part for my Logitech FreePulse headphones!

You need to contact these people;,ru Hope this helps :)

Jun 27, 2007 | Logitech FreePulse Wireless Consumer...

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