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The Beyerdynamic DT880 Discussion thread - Page 220

post #3286 of 8204
Quote:
Originally Posted by Sonic Defender View PostI had to sell mine to fund my D7000 purchase, but if I could have kept my 880s I would have.

You shouldn't have sold your 880s... triportsad.gif

post #3287 of 8204
Quote:
Originally Posted by Sonic Defender View Post

If your lucky it is just a loose connection, which it does sound like. If the speaker was performing fine, but just cuts in and out, it is likely a loose connection (dry solder). You should be able to get them serviced at any reliable service shop. As long as they can open the housing and test the connection you should be good to go, or at least that is how I suspect it will go. Good luck.

 

Quote:
Originally Posted by MrEleventy View Post


What he said. Should be an easy, cheap fix, as long it's not the driver itself.

 

Quote:
Originally Posted by cute View Post

That happened to my left driver.....checked the resistance right on the driver, and it showed an open, no resistance, and should have been around 600 ohms, like the right driver.  Ordered a new driver from Beyerdynamic-USA, due to be delivered today, but cost was $81 shipped for one driver!

 

Thanks guys! I'll ask him to take the headphones to a "reliable" service shop to check for a loose connection. Let's hope they can find one!

post #3288 of 8204
Though my sonic preferences have changed somewhat. I don't think I can ever part with my DT880. I try to find time o listen to them as much as I can. They are absolutely great for low volume listening.
post #3289 of 8204

I wouldn't be shocked if I buy another set of 880s down the road. I actually listened to some T1s and I really didn't like how they presented the highs, it just didn't feel correct. In all fairness this was at a meet, but my ears told me the 880s were, for me anyway, more musical sounding. It is all so subjective, but in my mind the 880s punch through the price/performance ratio quite well. I am very happy I had two great years with the 880 and they have become a benchmark of sorts for me. I liked how the bass was articulate, not overly strong, but there was nuance to it, and enough punch to be rewarding. I think every new head-fi member should get a set and try them out, same with the 650s which have another unique sound signature that is important to experience. Now I will be getting a chance to hear the Denon sound, and in the next year or so I hope to get myself a TH-900 and see how that goes. Cheers.

post #3290 of 8204

Just to be fair, the Florida seller did say in a message to me that he was told there was very little difference if any in actual delivery time, and that it was customs that slowed things down so if that is the case it should be fine. Regardless, he was a very good person to do business with so I have no complaints at all. I just wanted to add that clarification so that my comments wouldn't be misconstrued to mean I thought the seller could have been better on that front.

post #3291 of 8204
Quote:
Originally Posted by cute View Post

I had the left driver go out on my DT880 600 ohm headphones.  I got a replacement driver from Beyerdynamics-USA, and received it yesterday.  The new driver had two diodes soldered between the positive and negative solder pads, my old drivers did not have those.  Does anyone know what they are for, and if they affect the sound?
The drivers on all current DT770/880/990s are the same. Even the ones with diff ohms. The way they change the ohms is by connecting different resistors to raise the resistance. If your previous driver didn't have it, it might've been a 32ohm variant of the driver. Also, each one is tuned by felt/netting/cotton cone.

Some egs.

DT990 250 ohm would look like this,
driver front: no black felt
driver back: no netting
driver posts : resistor

DT880 32 ohm
driver front: black felt
driver back: netting
driver posts : no resistor

felt : tames treble, netting : tames bass
Edited by MrEleventy - 5/17/13 at 9:23am
post #3292 of 8204
Quote:
Originally Posted by MrEleventy View Post

Quote:
Originally Posted by cute View Post

I had the left driver go out on my DT880 600 ohm headphones.  I got a replacement driver from Beyerdynamics-USA, and received it yesterday.  The new driver had two diodes soldered between the positive and negative solder pads, my old drivers did not have those.  Does anyone know what they are for, and if they affect the sound?
The drivers on all current DT770/880/990s are the same. Even the ones with diff ohms. The way they change the ohms is by connecting different resistors to raise the resistance. If your previous driver didn't have it, it might've been a 32ohm variant of the driver. Also, each one is tuned by felt/netting/cotton cone.

Some egs.

DT990 250 ohm would look like this,
driver front: no black felt
driver back: no netting
driver posts : resistor

DT880 32 ohm
driver front: black felt
driver back: netting
driver posts : no resistor

felt : tames treble, netting : tames bass

 

First of all, they were diodes, not resisitors, and measurements with a multimeter confirms they are 600 ohm drivers, although the original right driver measures 598 ohms, and the new driver measures 650 ohms with or without the diodes.  I emailed Beyerdymanic-USA, Krysta did not have the answer and Rob is out this week, but she said she will get me an answer ASAP, I will post when I get an answer.

 

Does anyone on this forum know what the diodes are used for?

 

In the DT880 recable thread user @fallenangel said throw the diodes away, not needed......but there must be a reason for them!


Edited by cute - 5/17/13 at 10:49am
post #3293 of 8204
Quote:
Originally Posted by cute View Post

 

First of all, they were diodes, not resisitors, and measurements with a multimeter confirms they are 600 ohm drivers, although the original right driver measures 598 ohms, and the new driver measures 650 ohms with or without the diodes.  I emailed Beyerdymanic-USA, Krysta did not have the answer and Rob is out this week, but she said she will get me an answer ASAP, I will post when I get an answer.

 

Does anyone on this forum know what the diodes are used for?

 

In the DT880 recable thread user @fallenangel said throw the diodes away, not needed......but there must be a reason for them!

 

Protection circuit, my Manufaktur 600Ohm doesn't have any. tongue.gif

 

More info http://www.head-fi.org/t/417728/diodes-inside-dt770


Edited by Andrew_WOT - 5/17/13 at 11:01am
post #3294 of 8204
Oh oops. my bad. Last time I read anything about them, someone was calling it I resistor. :/
post #3295 of 8204
Quote:
Originally Posted by Andrew_WOT View Post

Quote:
Originally Posted by cute View Post

 

First of all, they were diodes, not resisitors, and measurements with a multimeter confirms they are 600 ohm drivers, although the original right driver measures 598 ohms, and the new driver measures 650 ohms with or without the diodes.  I emailed Beyerdymanic-USA, Krysta did not have the answer and Rob is out this week, but she said she will get me an answer ASAP, I will post when I get an answer.

 

Does anyone on this forum know what the diodes are used for?

 

In the DT880 recable thread user @fallenangel said throw the diodes away, not needed......but there must be a reason for them!

 

Protection circuit, my Manufaktur 600Ohm doesn't have any. tongue.gif

 

More info http://www.head-fi.org/t/417728/diodes-inside-dt770

 

Thanks for the responese and the link......makes sense I guess.  I took them off, and the DT880's sound fine.  I was concerned that the old right driver read 598 ohms, and this new driver reads 650 ohms with my Fluke DVM....is that enough difference to cause imbalance between channels.....can't hear any, but my ears may not be the best!

post #3296 of 8204
Quote:
Originally Posted by cute View Post

 

Thanks for the responese and the link......makes sense I guess.  I took them off, and the DT880's sound fine.  I was concerned that the old right driver read 598 ohms, and this new driver reads 650 ohms with my Fluke DVM....is that enough difference to cause imbalance between channels.....can't hear any, but my ears may not be the best!


It's typical for Beyer, the only one I had with closely impedance matching drivers were my Manufaktur DT880 600, everything else was all over the place. There was some quite technical post a while back explaining that *technically* that amount of impedance difference should not cause audible imbalance. The best way to test is to use SPL measuring pink noise from both cups, listening to mono record (if anything sounds off center it's a give away of imbalance).

Still kills me why all other manufacturers can match drivers impedance and Beyer even with the flagship T1 cannot.


Edited by Andrew_WOT - 5/17/13 at 11:26am
post #3297 of 8204

That post I was mentioning

http://www.head-fi.org/t/640000/do-the-dt770-pro-commonly-have-poorly-matched-drivers#post_8939097

Again, not sure how accurate the information is.
 

post #3298 of 8204
Quote:
Originally Posted by Andrew_WOT View Post

Quote:
Originally Posted by cute View Post

 

Thanks for the responese and the link......makes sense I guess.  I took them off, and the DT880's sound fine.  I was concerned that the old right driver read 598 ohms, and this new driver reads 650 ohms with my Fluke DVM....is that enough difference to cause imbalance between channels.....can't hear any, but my ears may not be the best!


It's typical for Beyer, the only one I had with closely impedance matching drivers were my Manufaktur DT880 600, everything else was all over the place. There was some quite technical post a while back explaining that *technically* that amount of impedance difference should not cause audible imbalance. The best way to test is to use SPL measuring pink noise from both cups, listening to mono record (if anything sounds off center it's a give away of imbalance).

Still kills me why all other manufacturers can match drivers impedance and Beyer even with the flagship T1 cannot.

 

Thanks for your input....I don't hear an imbalance!  I thought about ordering two replacement drivers, but $66 ea, I took a chance.  I do have an SPL meter, but they do sound centered, with well mastered tracks!  I did a recable with DHC Peptide type 2 litz, double entry, and it did tighten the bass with better impact, and more smooth and natural sounding throughout the spectrum, my tube amp provided up to 5W per channel.  Since doing the rewire, my Senn's have got some real competition with bass and treble.  Something about the highs on these that seem effortless with a lot of air, love the highs.  Also, used Parametric EQ to cut some of the mid bass, making vocals even more clear!


Edited by cute - 5/17/13 at 11:38am
post #3299 of 8204

Just wanted to chime in for any DT880 users who are wondering what dac/amp combo to get.  I'm now running the Magni/Modi stack with my Dt880 600ohms and couldn't be happier.  I been playing around with several dac/amp combos prior such as the Audinst MX1 dac/amp, Audinst MX1 dac + O2 amp, Aune T1 dac/amp, Aune T1dac + Magni.  Even with the highly regarded Amperex orange globe tube for the T1, I always struggled with highs on the DT880s.  I was originally a bit worried going magni/modi, as I heard some people mentioning this combo to be slightly bright, but to my surprise it, it hit the sweet spot for me.  My DT880s now sing, with no sibilance at all, more bass presence, and great soundstage.

 

I'm sure there are some better dac/amps, but for 200 dollars, I'd be very surprised if anything can come close.

post #3300 of 8204
Quote:
Originally Posted by Sonic Defender View Post

I wouldn't be shocked if I buy another set of 880s down the road. I actually listened to some T1s and I really didn't like how they presented the highs, it just didn't feel correct. In all fairness this was at a meet, but my ears told me the 880s were, for me anyway, more musical sounding. It is all so subjective, but in my mind the 880s punch through the price/performance ratio quite well. I am very happy I had two great years with the 880 and they have become a benchmark of sorts for me. I liked how the bass was articulate, not overly strong, but there was nuance to it, and enough punch to be rewarding. I think every new head-fi member should get a set and try them out, same with the 650s which have another unique sound signature that is important to experience. Now I will be getting a chance to hear the Denon sound, and in the next year or so I hope to get myself a TH-900 and see how that goes. Cheers.

I just love my DT880s because they're simply detail monsters. I've been using my modded Sennheiser HD280 blue tacks but I'm looking for a better closed headphone that doesn't recess the highs and mid bass as much. I figure the Denon AH-D2000 or D5000 fills in that gap of warmth that's been missing in my life. The Fostex TH600 and TH900 look amazing but are way out of my price ranger. Maybe some day :[ but hopefully I will audition them at the next canjam in LA this summer.

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