Feb 15, 2012 at 7:44 AM Post #6,436 of 11,346


Quote:
 
The dynamat on the inside of the rear cup is a very minor mod that reduces some plastic resonances from the rear cup.  Though I could hear a minor difference, I'd chock that up to optional.  If done, you must cover the interior dynamat with paxmate for the mod.
 
Silverstone probably is somewhat different from Paxmate, so I can't comment on the effect on bass.  The bass on mine is quite powerful.  Did you remove the stock felt, and how open are the vents?  Also, which pads are you using?
 
I haven't used dynamat on the ear-side of the cup.  That's actually my next experiment, where I will be to do a mod which is reversible and will use dyanmat on the ear side without any internal clay.
 


1) Stock felt is in place over the bass vents.
 
2) None of the vents are closed off, yet.
 
3) Stock pads, for now.  However, for my head / ears, the stock pad has a very good fit.  I find it adapts quite well in my situation.  Though, I'm not opposed to trying alternatives, that could be better.  
 
I'm at least trying to best my HE-400 and finally my HE-5LE to convince myself that these can be modified to those levels.
 
 
Feb 15, 2012 at 9:32 AM Post #6,437 of 11,346


Quote:
1) Stock felt is in place over the bass vents.
 
2) None of the vents are closed off, yet.
 
3) Stock pads, for now.  However, for my head / ears, the stock pad has a very good fit.  I find it adapts quite well in my situation.  Though, I'm not opposed to trying alternatives, that could be better.  
 
I'm at least trying to best my HE-400 and finally my HE-5LE to convince myself that these can be modified to those levels.
 



 
I think you should try shure 840 pad, it will improve bass and soundstage significantly. I'm trying to find a pair of Fa-003 pads, it will be the next upgrade 
L3000.gif
.
 
Feb 15, 2012 at 9:48 AM Post #6,438 of 11,346
I actually want to do a full blown comparison of modded T50RP with both the LCD-2 and the T1's. Maybe the LCD-3's too if my mate lets me borrow his. I foresee a big write up detailing all aspects of differences but right now I understand BMF and  MrSpeakers are pretty encumbered for time. Not sure modding myself would be the best course of action, not when it'd be to carry out such a bold comparison.
 
Feb 15, 2012 at 9:51 AM Post #6,439 of 11,346


Quote:
1) Stock felt is in place over the bass vents.
 
2) None of the vents are closed off, yet.
 
3) Stock pads, for now.  However, for my head / ears, the stock pad has a very good fit.  I find it adapts quite well in my situation.  Though, I'm not opposed to trying alternatives, that could be better.  
 
I'm at least trying to best my HE-400 and finally my HE-5LE to convince myself that these can be modified to those levels.
 

That doesn't look like a good foundation for bass.. Stock pads aren't very good for lowest bass and make for an excess amount of midbass. Closing the vents also tightens up the bass, as already has been said.
 
I've got an idea. Maybe we would put up descriptions of our materials, like Paxmate/Silverstone/Biplast? Because from what I've seen, looks like Biplast, for example, is different from Paxmate.
So, Biplast:
Black.
Looks like foamed bitumen, but is not sticky.
Gummy, if you compress it with some force, it won't unfold, just form and almost uniform mass.
About 50% of open cells, 50% of closed cells.
When looking from the top, almost all cells are open (at least in the top layer, 2-3 layers deeper there are cell walls)
Cells are 0.3-0.5 mm in diameter approximately.
1 square meter sheet weights about 100 grams (floor scales don't register it, quite light by hand, feels lighter than my phone actually).
 
Paxmate seems to be much less porous, so that's may be the reason I get good amount of bass even with white felt in place. Even excessive amount, if more than 3.5 bass ports are closed. And that's on Beyer pads, with their quite big interiors.

 
 
 
Feb 15, 2012 at 10:17 AM Post #6,440 of 11,346


Quote:
 
I think you should try shure 840 pad, it will improve bass and soundstage significantly. I'm trying to find a pair of Fa-003 pads, it will be the next upgrade 
L3000.gif
.


For FA-003 pads: Check with Noisy Motel (Billy) in Australia and frogbeats (David) in England.
 
 
Feb 15, 2012 at 12:00 PM Post #6,441 of 11,346


Quote:
I think you should try shure 840 pad, it will improve bass and soundstage significantly. I'm trying to find a pair of Fa-003 pads, it will be the next upgrade 
L3000.gif
.


 
Thanks for taking a look at what I have so far, and providing the additional suggestion.  I had been holding off on the Shure pads as I wanted to order them from B&H Photo along with some other items that were not in stock at the time.  I think I'll just bite the bullet anyway and get things moving on them and forget about the other items, for now.

 
Quote:
That doesn't look like a good foundation for bass.. Stock pads aren't very good for lowest bass and make for an excess amount of midbass. Closing the vents also tightens up the bass, as already has been said.
 
I've got an idea. Maybe we would put up descriptions of our materials, like Paxmate/Silverstone/Biplast? Because from what I've seen, looks like Biplast, for example, is different from Paxmate.
So, Biplast:
Black.
Looks like foamed bitumen, but is not sticky.
Gummy, if you compress it with some force, it won't unfold, just form and almost uniform mass.
About 50% of open cells, 50% of closed cells.
When looking from the top, almost all cells are open (at least in the top layer, 2-3 layers deeper there are cell walls)
Cells are 0.3-0.5 mm in diameter approximately.
1 square meter sheet weights about 100 grams (floor scales don't register it, quite light by hand, feels lighter than my phone actually).
 
Paxmate seems to be much less porous, so that's may be the reason I get good amount of bass even with white felt in place. Even excessive amount, if more than 3.5 bass ports are closed. And that's on Beyer pads, with their quite big interiors.
 


Also, thanks for your input.  The Silverstone seems a bit porous, actually.  It's a bit thicker than 1/4" and quite squishy (from a foamy perspective) when  you sqeeze it.  When I installed on Silverstone on the whole cup area, I didn't like the bass at all.  Instead, I used some closed cell craft foam sheets that I was able to cut down and adhere to the insides of the cups since it did have adhesive on one side.  This really did some goodness to my bass, though.
 
Now, you have me thinking, though.  I wonder if the key isn't to go for the authentic "Pax-Mate" instead of the variants of it?  Also, I do recall a post by a previous member suggesting that the drivers were bi-polar, so it was essential to mass load the ear side of the speaker baffle, too.  However, only a few users have done so with either the plasticine or the Dynamat - and covered it with adhesive felt.
 
 
 
Feb 15, 2012 at 12:24 PM Post #6,442 of 11,346
Shure 840 pads ordered - should be here Friday.  I'm going to check around my local car audio installation shops to see if they offer PaxMate or something other than Silverstone.  I may get 1/2 sq. foot of Dynamat in the event it were to work its way into one of my configurations.
 
Feb 15, 2012 at 1:43 PM Post #6,443 of 11,346
About the dual mono thing - I've been using isone pro in conjunction with these phones from the beginning, so I don't believe it's that.  I'm interested in trying something more substantial over the earside driver like some 2mm craft felt to see how that deals with it.  I can happily say that a reverse reflex dot on the center square of the driver earside definitely kills the head-ringey issue... at the small cost of also killing everything above 6khz.
 
Reflex dots in their traditional configuration are probably the least successful of the mods I've tried so far.  The way they choked the sound up actually led me to try refitting the melamine/cotton fill I've got in there as a donut lining the cup edges rather than a disk covering the center peg.  Keeping the fiber fill far away from the driver itself seems to help "unstuff" the sound and improved bass impact a bit.
 
Feb 15, 2012 at 5:42 PM Post #6,448 of 11,346
Lol ^
 
Feb 15, 2012 at 5:46 PM Post #6,449 of 11,346
They were bloody impossible to find online, it's amazing! I finally was able to find one on some random guitar shop in Delaware's website. :p
But everywhere else was backordered until march, I'm guessing Fostex never expected these to become this popular.
 
Feb 15, 2012 at 6:36 PM Post #6,450 of 11,346
I'm guessing Fostex never expected these to become this popular.


They know whats going on but don't care. Feel free to speculate as to the reason.
 

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