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Just listened to some Fostex T50RPs today... WOW! - Page 191

post #2851 of 10599

^Don't forget stupendously tweakable to suit your preference wink.gif

post #2852 of 10599
Quote:
Originally Posted by mmlogic View Post

Never knew there was Ortho headphone other than LCD-2 and HiFi Man, and most of all...so affordable!


You have no idea.....

 

Come over to the dark side....if you only knew the power....

 

darth-vader_7520.jpg

 

Search your feelings.....you know it to be true....

 

VaderFatherT50's.jpg

 


Edited by LFF - 9/24/11 at 10:13pm
post #2853 of 10599
Quote:
Originally Posted by mrspeakers View Post

What to do with the wife's old make-up applicators?

I expected Mrs. Peakers to know all the make-up applicator tricks.
Quote:
Originally Posted by LFF View Post

>VaderFatherT50's.jpg
Luke used to bullseye womp rats with his T50RPs.
Edited by Draygonn - 9/25/11 at 3:34am
post #2854 of 10599
Quote:
Originally Posted by Draygonn View Post

Luke used to bullseye womp rats with his T50RPs.
 

biggrin.gif

 

Luke only had a lowly T16.

 

Now Vader....he has a T50RP!!!!

 

 

He wishes he had a T50RP....

luke-skywalker-tear.jpg

 


Edited by LFF - 9/24/11 at 10:39pm
post #2855 of 10599

Do you think the T50RPs would fit DV?

What about Rick Moranis? (think SpaceBalls biggrin.gif)

post #2856 of 10599
Quote:
Originally Posted by dogears View Post

Do you think the T50RPs would fit DV?

What about Rick Moranis? (think SpaceBalls biggrin.gif)

I think they would fit under his helmet.

 

Dark Helmet would probably use LCD-2's. evil_smiley.gif
 

 

post #2857 of 10599

^Nice one chief! Made my day biggrin.gif

post #2858 of 10599
Quote:
Originally Posted by LFF View Post

He wishes he had a T50RP....


Good timing, I recently got the Star Wars Trilogy on Blu Ray and I'm watching the first one wearing my T40RPs now. I'm imagining the Jawa's were killed because their T50RP modding got the Empire in a tissy over no one wanting to pay 1k for headphones anymore...
post #2859 of 10599

Fostex Anonymous... I'm ordering another 2pairs... one for my bro and one for me for the leakypants project... Pls help me... I can't stop this addiction...

post #2860 of 10599
Quote:
Originally Posted by dogears View Post

^Suspension headband - will keep your T50RPs looking stock and crappy wink.gif

 

@BMF, add some fiberfill inside the cups perhaps?



Good idea on the headband and fiberfill!  Thanks.

post #2861 of 10599
Quote:
Originally Posted by Downtheline1973 View Post

Any chance you can check to see if the LCD-2 ear-cushions fit the T50rp?
 


Fostex cups are 3.75" x 4.25" ovals.  LCD2 cups are 4.25" round.  Mine are original and glued in place.  

 

post #2862 of 10599
Quote:
Originally Posted by dogears View Post

^Suspension headband - will keep your T50RPs looking stock and crappy wink.gif

 

@BMF, add some fiberfill inside the cups perhaps?



Does anyone have a supplier for yellow fiberglass squares about 1" thick?

 

China_Fiber_Glass_Wool20085211742485.jpg

post #2863 of 10599

Isn't it regular material for home insulation? In which case it should be available pretty much anywhere no?

 

This is not well known but melamine foam (sold nowadays as sponge http://en.wikipedia.org/wiki/Melamine_foam ) has excellent sound absorption capabilities. It's actually used in launch vehicles since it's very lightweight yet effective ( http://www.dtic.mil/cgi-bin/GetTRDoc?Location=U2&doc=GetTRDoc.pdf&AD=ADA476215 ). I used it for modding HD800's ( http://www.head-fi.org/t/464042/want-more-bass-from-your-hd-800-easy-mod/15#post_6299244 ). It's available in every supermarket in Japan, maybe elsewhere too?

 

Here's some comparison of absorption performance (0 means incident waves are completely reflected, 1 means perfectly absorbed) for a thin 3mm layer (vs. a typical fiberglass): 

VAOne_Fiberglass_vs_Melamine_Absorption.jpg

Note that the results completely change when you stuff the fiber like crazy (expect much less absorption). Also, one misconception is that filling a volume with fiber reduces is effective volume, but it's actually the opposite (it acoustically feels more compliant when you fill it - that unless you stuff it so much that the cotton or whatever fiber is heavily compressed, in which case yes you're reducing the effective volume...).

 

Quote:
Originally Posted by bluemonkeyflyer View Post





Does anyone have a supplier for yellow fiberglass squares about 1" thick?

 

China_Fiber_Glass_Wool20085211742485.jpg



 

post #2864 of 10599

^ arnaud, 

 

Thanks for the information and graphs.  Very interesting.  Good stuff on the HD800 mod, too.  I found melamine sponges on Amazon.

 

So, it appears melamine sponge is better at absorbing higher frequencies and can be tailored to target various frequency range absorption by using different thicknesses.  Is this correct?  Do you know of a material to add to the internal volume of the cups to attenuate the quantity (not the quality) of frequencies from 20hz to 250 hz?  

 

I happen to like the bass quantity/quality of my current T50RP mods but my wife wants a set with less bass quantity, thus the search for a fix.  I think one possibility is to use standard mods of plasticine in the baffles and Paxmate or Silverstone in the cups, leave the denser white felt on the back of the drivers, and try with/without a reflex dot - OR standard mods but remove the white felt and apply more than one layer of Organdi.  It make sense to try leaving the white felt intact, first.

 

Could you explain why/how loose, non-compressed fiber in the cups increases the effective volume vs. why/how densely packed fiber reduces the effective cup volume?

post #2865 of 10599

Does anyone know of an inexpensive open-back headphone that might work as a "foster phone" for T50RP driver transplanting?

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