= Hifiman HE500 & HE400 Jergpad Mod v2.5 =
Nov 20, 2013 at 12:12 PM Post #1,246 of 1,710
Nov 20, 2013 at 12:58 PM Post #1,247 of 1,710
   
We're just trying to let Vaatu out of our HE-500's, no biggie.

 
LOL.  I had no idea what I was typing, and thus what genie was escaping from what bottle.  Every day I learn some seriously geeky stuff on these forums.
 
For me, I'm just trying to harness the energy of the Pipes of Pan.  I heard Creatology felt is really good for that.
 
 
"...and so say all of us...Tap into America!"
 
Nov 20, 2013 at 4:21 PM Post #1,248 of 1,710
I observed a slight caveat with the felt backwave damping modification ONLY if one uses the stiffened felt, that is somehow because it is so rigid, it acts as a waveguide too well especially for the treble region, and so the end sound might sound a bit more stringent around 10kHz.
 
The simple solution to this, I found, has been to taper off the right angles of the felt strips that line the grid of the drivers. Easiest way to do it is to use your fingernails and pass through between each two strips of felt a dozen times. So basically the aim is to round off the outer corners of the stiffened felt strips to reduce the "waveguide" effect (imagine reshaping the cross-section of the felt strips so that it is now a half-circle instead of a rectangle).
 
Of course some of you might not note these differences, but I tend to be extremely picky about sound signatures, especially minor changes in sound signatures, as they bug me a lot as soon as I notice them. So just take the above with a grain of salt and only try it if the situation fits yours and you yourself experienced a similar phenomenon.
 
Nov 20, 2013 at 6:24 PM Post #1,249 of 1,710
Funny thing guys.  There seems to be a mix up with people (like me) using the wrong user name in trying to contact Modulor for Jerg pads.  I've been using the user name Modular instead.  
 
I thought Modulor was ignoring me.  Sorry about that Modulor..
 
Nov 20, 2013 at 6:39 PM Post #1,250 of 1,710
  Funny thing guys.  There seems to be a mix up with people (like me) using the wrong user name in trying to contact Modulor for Jerg pads.  I've been using the user name Modular instead.  
 
I thought Modulor was ignoring me.  Sorry about that Modulor..


Yeah its really hard to find a good calculater too...=(
 
Nov 20, 2013 at 7:23 PM Post #1,254 of 1,710
  Funny thing guys.  There seems to be a mix up with people (like me) using the wrong user name in trying to contact Modulor for Jerg pads.  I've been using the user name Modular instead.
 
I thought Modulor was ignoring me.  Sorry about that Modulor..

I feel your pain, I had it wrong too, at first but it only took a re-read before the first PM to notice it in my case.  I had forgotten about the drop down on the user names at the time.
beerchug.gif

 
Nov 20, 2013 at 8:04 PM Post #1,255 of 1,710
Funny thing guys.  There seems to be a mix up with people (like me) using the wrong user name in trying to contact Modulor for Jerg pads.  I've been using the user name Modular instead.  

I thought Modulor was ignoring me.  Sorry about that Modulor..



Yup! Sorry guys. I frequent the site from time to time but mostly sporadically. So you can imagine my confusion when I logged in the other day to a batch to PM'S about these pads!
 
Nov 20, 2013 at 8:12 PM Post #1,256 of 1,710
Yup! Sorry guys. I frequent the site from time to time but mostly sporadically. So you can imagine my confusion when I logged in the other day to a batch to PM'S about these pads!

I'll admit, I almost PM'd you instead of Modulor too, the first time I tried to PM him. Only stopped myself when I noticed your avatar was different.
 
Nov 21, 2013 at 1:11 AM Post #1,258 of 1,710
Wow, you guys are going extreme with "backwave" modification now. Cool stuff.  Keep it up!
 
Nov 21, 2013 at 11:44 AM Post #1,259 of 1,710
  Wow, you guys are going extreme with "backwave" modification now. Cool stuff.  Keep it up!

 
I'm thinking of disassembling mine and rounding out the openings on both sides of the magnets...  NAH!  But it's an interesting thought experiment  
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Nov 21, 2013 at 8:20 PM Post #1,260 of 1,710
I was a bit neater on the back side of the driver (since it will actually be seen):
 

 
  
 
The visco-elastic material is hard to work with in thin strips, so I stuck to felt for the driver, but since I had some extra dynamat laying around, I put it on the inside ring of the housing.  Hopefully this experiment pays off.  
 

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