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Bowers & Wilkins P7 - over the ear headphones
Nov 13, 2015 at 1:35 PM Post #1,397 of 1,506
I got a P7 two weeks ago and, although I was really impressed, the right side driver became defective yesterday (rattling, specially on base/louder sounds).
 
I then searched and found some people on the Amazon product page commenting on similar problems (just look at the one-star reviews there).
 
Have anyone experienced anything like that? Is there some kind of manufacturing issue with the P7?
 
I ask this because I am not sure I should get a new one, or perhaps change for a more reliable make/brand.
 
Nov 13, 2015 at 1:52 PM Post #1,398 of 1,506
gustavohmo said:
  I got a P7 two weeks ago and, although I was really impressed, the right side driver became defective yesterday (rattling, specially on base/louder sounds).
 
I then searched and found some people on the Amazon product page commenting on similar problems (just look at the one-star reviews there).
 
Have anyone experienced anything like that? Is there some kind of manufacturing issue with the P7?
 
I ask this because I am not sure I should get a new one, or perhaps change for a more reliable make/brand.
Click to expand...

B&W is a reliable brand. Talk to their customer service. I've had mine for a year without any issues.
 
Nov 21, 2015 at 7:11 PM Post #1,400 of 1,506
audioxxx said:
It is possible to rewire the headphone's female jack,plug removing the common ground, then soldering that single ground to the new cable. I am thinking about doing this mod to my p7.
Some soldering skills, and a appropriate update cable, and plug will be needed. The other problem will be it will need an adapter to go back to single ended.
Not sure if it's worth the hassle.
Click to expand...

 
Did you ever pursue this mod audioxxx?
 
I've been looking at gaining access to the jack / internal wiring. I've found two screws holding the earcup together, but there also appear to be two rivet type fasteners top and bottom. 
 
I'd be grateful for any pointers on how to proceed.
 
Nov 21, 2015 at 8:19 PM Post #1,401 of 1,506
peridot said:
Did you ever pursue this mod audioxxx?

I've been looking at gaining access to the jack / internal wiring. I've found two screws holding the earcup together, but there also appear to be two rivet type fasteners top and bottom. 

I'd be grateful for any pointers on how to proceed.
Click to expand...

No I did not proceed to removing the screw's, I came to the conclusion that because I want to use these with my future cell phone, the LG v10. So the mic cable will be extremely useful.


Good luck
 
Nov 22, 2015 at 11:27 AM Post #1,403 of 1,506
audioxxx said:
No I did not proceed to removing the screw's, I came to the conclusion that because I want to use these with my future cell phone, the LG v10. So the mic cable will be extremely useful.
This is not good if it's permanently riveted, you will need to centre punch the rivets, and drill them out with care using a vice and bench top drill. Wrap the headphones in something very soft and use very little pressure with the drill. (Tape the entrance to the woofer of with removable tape so no scrap metal goes down the driver ports).

Good luck
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Thanks for that audioxxx.
 
I've done some more investigating and there are actually six screws securing the driver mounting plate to the headshell. They are difficult to locate under the thin felt layer beneath the earpad, but once removed access is available to the jack and internal wiring
 
The rivet type fastenings only go through the driver mounting plate - they don't attach it to anything or serve any other recognisable purpose 
confused.gif

 
Anyway... I'm in, so as soon as the Canare cable I've ordered arrives, my P7s will be getting a balanced connection.
 
I'll post some photos when I've done it.
 
Nov 22, 2015 at 6:31 PM Post #1,404 of 1,506
peridot said:
Thanks for that audioxxx.

I've done some more investigating and there are actually six screws securing the driver mounting plate to the headshell. They are difficult to locate under the thin felt layer beneath the earpad, but once removed access is available to the jack and internal wiring

The rivet type fastenings only go through the driver mounting plate - they don't attach it to anything or serve any other recognisable purpose :confused:

Anyway... I'm in, so as soon as the Canare cable I've ordered arrives, my P7s will be getting a balanced connection.

I'll post some photos when I've done it.
Click to expand...

It's good that the p7 isn't riveted shut, I didn't think b&w would do such a thing, but with out piercing the felt I could not know.
I am looking for a TRRS female plug to replace the TRS, with no luck which would make this a standard plug and play job, and easily reversable as well. Looking forward to seeing your mod and impressions on the balanced version.
 
Dec 5, 2015 at 7:47 AM Post #1,405 of 1,506
I've completed the balanced rewire and posted some photos on the P7 recable thread here 
 
I've only had a quick listen for test purposes and will use them a bit more later. To be honest I'm not expecting any significant change as a result of the cable. The motivation for the modification is that I have a Cavalli Liquid Carbon amplifier on order and want to use the P7s from its balanced output until I can afford a headphone upgrade.
 
Dec 23, 2015 at 5:01 PM Post #1,406 of 1,506
I´ve had these forever now, and I have used them ​extensively.
 
 
​Has the interior felt plate turned gross and icky for anyone? Using them for hours on end (not to mention during summer) has turned the interior into a sticky fly trap. I can´t for the life of me figure out what to do. I don´t even bother opening them because I´m not sure how to get all that gunk (sweat and whatever else) out. Even the magnets are discolored!
 
Dec 23, 2015 at 5:16 PM Post #1,407 of 1,506
chimichanga said:
  I´ve had these forever now, and I have used them extensively.
 
 
Has the interior felt plate turned gross and icky for anyone? Using them for hours on end (not to mention during summer) has turned the interior into a sticky fly trap. I can´t for the life of me figure out what to do. I don´t even bother opening them because I´m not sure how to get all that gunk (sweat and whatever else) out. Even the magnets are discolored!
Click to expand...

 
I use mine almost daily, but always in an air conditioned office and I've had no issues. 
You can always buy yourself a new set: http://www.bwgroupusa.com/bwgroup-parts/index.php/bw/headphones/p7.html
 
Dec 23, 2015 at 9:02 PM Post #1,409 of 1,506

 
Quote:
kljtech said:
   
I use mine almost daily, but always in an air conditioned office and I've had no issues. 
You can always buy yourself a new set: http://www.bwgroupusa.com/bwgroup-parts/index.php/bw/headphones/p7.html
Click to expand...

 
The inside of the earpads are a little rough looking, but if I replaced them with new ones, eventually they would detriorate quickly as well. The earpads don´t look too bad, the problem lies with the material sorrounding the headphone drivers. (I posted a stock image of the part.)
 
Quote:
randy98mtu said:
  I would try to clean them with warm water and soap.  If that doesn't work out, grab some pads in from the post above.
Click to expand...

Do you mean cleaning the felt material of the headphone drivers? The detachable earpads aren´t the problem, I don´t mind how those end up looking, they can be replaced as you said.
 
I still don´t quite understand how the felt material got so sticky. I did not know human ears could do that. I think it may have been the prolonged contact of the ears with the headphone felt interior through the earpad mesh. I was convinced at some point it must have been glue that was leaking from the construction somewhere.
 
I don´t think I can use water or any liquid to clean the surface. (Thanks for any help/consolation.)
 
Dec 23, 2015 at 9:48 PM Post #1,410 of 1,506
chimichanga said:
   
The inside of the earpads are a little rough looking, but if I replaced them with new ones, eventually they would detriorate quickly as well. The earpads don´t look too bad, the problem lies with the material sorrounding the headphone drivers. (I posted a stock image of the part.)
 
Quote:
Do you mean cleaning the felt material of the headphone drivers? The detachable earpads aren´t the problem, I don´t mind how those end up looking, they can be replaced as you said.
 
I still don´t quite understand how the felt material got so sticky. I did not know human ears could do that. I think it may have been the prolonged contact of the ears with the headphone felt interior through the earpad mesh. I was convinced at some point it must have been glue that was leaking from the construction somewhere.
 
I don´t think I can use water or any liquid to clean the surface. (Thanks for any help/consolation.)
Click to expand...

 
Do you use any type of gel or other product on your hair? If so, it's possible that it could leave a residue on the pads or inside the earcups. I had to use a soft warm wash cloth (barely damp) a couple times to clean up the earcups on mine...then they looked as good as new. I have no idea why the felt-like underneath would show any type of wear unless possibly enough sweet got to them. 
 
I hope you're able to find a solution...they're sweet sounding headphones. If nothing else you may want to contact B&W's customer service, I needed new metal grill caps for the nautilus tweeters on my 10-year-old 805 N's stand mounts and they were very helpful. Good luck! 
 
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