Hey, I've had a pair of Sennheiser CX 400ii Precision headphones for about 3 months now, and just today the right headphone has started making an annoying buzzing/fizzing sound when in use. Sound is slightly reminiscent of audio clipping, only constantly. Would greatly appreciate any help if this can be fixed!

Probably a defective item, Try for a return.

I think this is common problem for headphones. To fix it you will have to solder cord's wires back to plug. If you have tools and some experience you'll be fine

• You can get replacement parts here.
• Please reply if you have any more questions. Good luck! (Please give a thumbs up, I am doing this for a summer job!)

Try your headphones in a different audio device. If the problem persists than the headphones have a split in the wiring for the left earbud. If you are under warranty then Sennheiser will happily repair your headphones.

It is likely that from ware and tare that one of the wires has come apart inside the line so it is time to buy a new pair

It's likely the groud connection in the cable is broken. Possibly at the plug, it would mean no centre focus and no bass as the headphones get only out of phase sounds. I'm guessing you've tried them in another device - a faulty sockey would do the same.

yellow and red-green are most likely grounds. red is normally the right channel and green is normally the left channel. quick question though, why on earth would you cut the plug off of a pair of 75-90$ headphones?

Broken audio cable entering the transmitter or audio jack plug.

Power supply plug loose / faulty power supply.

You might want to try using a different size of the earpieces that come with it, and make sure they're inserted fully into your ear. They come with three different size earpieces because people's ears are shaped differently, and having the right size can make a HUGE difference in the sound. If it's done right, it should basically feel like you've just inserted an earplug into your ear.

If that doesn't help, and you've tried another pair of headphones to verify that it's not a problem with your sound source, I would guess you were unlucky enough to get a defective pair.

The chance of both speakers going bad at same time is remote. Your ipod is at fault and has something wrong with its output circuits. Check to make sure that there is no muting circuit inadvertently turned on.