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How To Build One Of The World's Finest Dynamic Headphones (markl Denon AH-D5000 Mods) - Page 52

post #766 of 785
You know, after some hours of listening(12 hours) I really do feel this mod has made the change for the better. The mids are seriously allowed to come out more though so if anything this mod was a plus.
post #767 of 785

Has anyone tried putting dynamat on the back of a DT770-PRO80...will this most likely decrease bass?

 

Cheers 

post #768 of 785

Did the mods today, and so far, I'm pretty happy with what I'm hearing (it's more balanced, which is what I wanted it to be, much more like my modded Polks!). Unfortunately, I had to throw out the pad mods, as they caused incredibly *incredibly* sharp sibilance. Admittedly, I used foam and cotton instead of fiberloft, so that may have been it, but I'd be surprised if simply the materials would add *that* much sibilance.

I seem to be one of the only people who have had this problem, which really confuses me.

 

Though I have to say I'm impressed with the changes. This mod makes my D7000's even tighter than they were with the open headphone mod.


Edited by Taowolf51 - 6/26/12 at 8:11pm
post #769 of 785
Quote:
Originally Posted by Taowolf51 View Post

Did the mods today, and so far, I'm pretty happy with what I'm hearing (it's more balanced, which is what I wanted it to be, much more like my modded Polks!). Unfortunately, I had to throw out the pad mods, as they caused incredibly *incredibly* sharp sibilance. Admittedly, I used foam and cotton instead of fiberloft, so that may have been it, but I'd be surprised if simply the materials would add *that* much sibilance.

I seem to be one of the only people who have had this problem, which really confuses me.

 

Though I have to say I'm impressed with the changes. This mod makes my D7000's even tighter than they were with the open headphone mod.

 

YOU DRILLED OPEN THE D7000 CUP?!!

post #770 of 785
Quote:
Originally Posted by Taowolf51 View Post

Did the mods today, and so far, I'm pretty happy with what I'm hearing (it's more balanced, which is what I wanted it to be, much more like my modded Polks!). Unfortunately, I had to throw out the pad mods, as they caused incredibly *incredibly* sharp sibilance. Admittedly, I used foam and cotton instead of fiberloft, so that may have been it, but I'd be surprised if simply the materials would add *that* much sibilance.

I seem to be one of the only people who have had this problem, which really confuses me.

 

Though I have to say I'm impressed with the changes. This mod makes my D7000's even tighter than they were with the open headphone mod.

When I took my cups off the D7k, they sounded like ass, complete ass, no tightness, sloppy bass, loss of micro detail. Put them straight back on

post #771 of 785
Quote:
Originally Posted by WiR3D View Post

When I took my cups off the D7k, they sounded like ass, complete ass, no tightness, sloppy bass, loss of micro detail. Put them straight back on

 

Yeah... if you follow the Markl Mods "to the letter" there is no stridency in the highs - except possibly with poor recordings.  He experimented with many materials and the amounts, and their application to arrive at the optimum sound.  Though you can adjust the amounts, or decide to eliminate the pad mod - you really should "follow the yellow brick road" to achieve the optimum sound.

 

And... even more important... is that you use a low impedance, high current output amp to best match their electrical characteristics.

post #772 of 785
Quote:
Originally Posted by Gradofan2 View Post

 

Yeah... if you follow the Markl Mods "to the letter" there is no stridency in the highs - except possibly with poor recordings.  He experimented with many materials and the amounts, and their application to arrive at the optimum sound.  Though you can adjust the amounts, or decide to eliminate the pad mod - you really should "follow the yellow brick road" to achieve the optimum sound.

 

And... even more important... is that you use a low impedance, high current output amp to best match their electrical characteristics.

That second part is so true. I built a faux impedance decreasing adapter to overcome the issues with my STX, the results were more then I thought. I would not dare use it with the STX without the adapter.

 

Ironically I don't think the AKG K242HD suffers from impedance mismatches, It just displays the characteristics of the amp regardless.

post #773 of 785
Quote:
Originally Posted by mrAdrian View Post

 

YOU DRILLED OPEN THE D7000 CUP?!!

 

Haha, no. I did the "test" version, where you just remove the cups (and space the pads away from the baffle).

 

I think my amp may be a bit U shaped, I'll try it with just my DAC.


Edited by Taowolf51 - 6/27/12 at 9:20am
post #774 of 785

just did the partial mod (haven't done the front part of the drivers yet) and upon initial listen do feel that the bass is more tight. can't wait to finish the mod!

post #775 of 785
Subscribed (finally).
post #776 of 785

I have finally taken the plunge and moded my AH-D 5000s after 2 years.  Pretty much followed the markL mod. Did not stuff the ear cups and covered the perforated hole area, on the front of the drivers, with  a softer less reflective material.

 

They are a definite improvement over the original article. There is a sound stage now,  more detail throughout the sound spectrum. Bass is more textured, the sound has opened up, sounds sweeter some how, does not seem to suffer from increased sibilance. Just a bit heavier in weight.

 

I am very much a large speaker person and have been surprised how much I enjoy listening through these phones. They are very addictive it is hard  to take them off!

 

I had a pair of Stax Omegas with a valve 007t energizer, which were pretty detailed but I did not enjoy them as much as the current Denons.  The moded 5000s match the detail of the Stax but with much better bass, more attack and sound stage. Unfortunately  I have not been able to make a direct comparison as I sold the Stax.  I did not listen to them very often after moving to a detached house and no longer needed to worry about the neighbours.  I guess that says it all.

 

I use a benchmark DAC to drive the 5000s. From what I have read the Stax 007t may have limited the Omegas  performance, I tried upgrading it with NOS valves checked bias, after market power cable etc.  I think there are quite a few custom built energisers out there.

 

I wonder why Denon have stopped making the 5000s & 7000s?

 

 

post #777 of 785
Quote:
Originally Posted by tomart View Post

snip

Being a big fan of the Denons, I still don't believe the denons come close to any stax for clarity...  But they are the king of fun (fostex headphones; D2000, D5000, D7000, TH900) and thats what makes them special, they are just smile machines.

post #778 of 785

Thanks ever so much for this guide. I just done the mod on my D2kS and love the effect. Made a little video and gave you a formal thank you at the end.

 

Enjoy the video:

 

post #779 of 785

How do you like them after the mods? :D

post #780 of 785
Might just be the last person on earth doing this mod to my Denon D2000. Headphones should be latest revision, bought them last summer just before they went EOL. Anyway did the first part of damping the rear of the driver. Very happy so far. 
 
After the mod I think the sound is more detailed. Easier to distinguish specific sounds and voices. I think this also contributed to soundstage getting wider. Another thing is that highs seem less edgy. I have a few tracks were I always had to turn down the volume before the mod. Not anymore smily_headphones1.gif
 
Will continue in a few days or weeks with damping the outer part of the rear driver. And then possibly some Dynamat in the cup edges. Not sure about the last one. I like the bass and do not want less, but maybe a little tighter perhaps.

 

 

 

 

 

 


Edited by HiFiRobot - 4/16/13 at 9:02am
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