Latest Thread Images

specs.png
20170715_142541.jpg
20170614_183106.jpg
20170614_183106.jpg
20170614_183101.jpg
20170614_183047.jpg
20170419_110832.jpg 20170419_111427.jpg 20170419_111037.jpg BluemonkeyPantsPic5.jpg P1010040.jpg P1010036.jpg P1010037.jpg P1010362.jpg P1010361.jpg P1010359.jpg IMG_20160630_233950.jpg IMG_20160630_234249.jpg CpzEf7k.gif headphoneampfromspeaker.gif
See full thread gallery...
Just listened to some Fostex T50RPs today... WOW!
Dec 11, 2011 at 7:56 PM Post #5,416 of 11,345
Seeing if whether there is a measurable difference is on the agenda for me (also between plastic/wood baffles). The driver casing is quite heavy already, and if the gasket between driver and baffle is doing its job there probably shouldn't be much mechanical energy being transferred.
 
If no plasticine works, that's very nice. Lighter and more room for acoustic dampening.
 
Quote:
rhythmdevils said:
I have one T50rp loaded with plasticine and one without and I don't notice a significant difference between them to be honest.  I haven't compared them with the exact same damping, but they sound very much the same, they have the same strengths and I have the same problems with both pairs- not enough bass depth or quantity and a bump in the upper mids that is bothersome.  If there is any benefit in the plasticine it is really subtle and IMO not worth it unless you have everything else dialed in.  It certainly doesn't increase bass quantity. 
 
Hard to be sure though because the plasticine needs to be covered in acoustic foam, so one pair has a plastic baffle and the other foam covered baffle, but still they sound very similar...
 
I haven't had time to try that many things in them yet so I'm not sure whether I'll get them to my liking or not.  I have eliminated all resonances, and I could see some people liking the way they sound, very clear, but they are too thin for my taste so far. 
Click to expand...



 
 
Dec 11, 2011 at 9:16 PM Post #5,417 of 11,345
Wow! no differences perceived with or without plasticine? but all the major mods in here are based on it and it just come's out on post #5416???
 
Quote:
rhythmdevils said:
I have one T50rp loaded with plasticine and one without and I don't notice a significant difference between them to be honest.  I haven't compared them with the exact same damping, but they sound very much the same, they have the same strengths and I have the same problems with both pairs- not enough bass depth or quantity and a bump in the upper mids that is bothersome.  If there is any benefit in the plasticine it is really subtle and IMO not worth it unless you have everything else dialed in.  It certainly doesn't increase bass quantity. 
 
Hard to be sure though because the plasticine needs to be covered in acoustic foam, so one pair has a plastic baffle and the other foam covered baffle, but still they sound very similar...
 
I haven't had time to try that many things in them yet so I'm not sure whether I'll get them to my liking or not.  I have eliminated all resonances, and I could see some people liking the way they sound, very clear, but they are too thin for my taste so far. 
Click to expand...



 
 
Dec 11, 2011 at 10:25 PM Post #5,419 of 11,345
Blasphemy! Heresy? Or crazed Genius?

You must decide. :D

rhythmdevils said:
I have one T50rp loaded with plasticine and one without and I don't notice a significant difference between them to be honest.  I haven't compared them with the exact same damping, but they sound very much the same, they have the same strengths and I have the same problems with both pairs- not enough bass depth or quantity and a bump in the upper mids that is bothersome.  If there is any benefit in the plasticine it is really subtle and IMO not worth it unless you have everything else dialed in.  It certainly doesn't increase bass quantity. 
 
Hard to be sure though because the plasticine needs to be covered in acoustic foam, so one pair has a plastic baffle and the other foam covered baffle, but still they sound very similar...
 
I haven't had time to try that many things in them yet so I'm not sure whether I'll get them to my liking or not.  I have eliminated all resonances, and I could see some people liking the way they sound, very clear, but they are too thin for my taste so far. 
Click to expand...
 
Dec 11, 2011 at 10:27 PM Post #5,420 of 11,345
ditto^ i did a test session where i pulled out all the plast, listened for an hour, and put it back in and was surprised by how controlled the bass got. the cleanliness was much better and more enjoyable throughout the spectrum. I guess this is IMO but my ears werent lying to me...
 
M
 
Dec 11, 2011 at 11:12 PM Post #5,421 of 11,345
possible placebo effect?
 
Dec 12, 2011 at 12:02 AM Post #5,423 of 11,345
I was testing out a bit more cotton stuffing in the cups today, and I found that it reduced the bass a bit too much for my tastes along with generally making the headphones sound weird. Of course, that's what happens when the vents get too blocked. I was feeling very lazy and didn't want to open them back up, so I took a mechanical pencil with the lead/graphite sticking out a bit and poked the cotton a bit through the open vent. I wasn't sure if this would actually make a difference, but it did! The bass came back and the sound wasn't weird. So if you ever find yourself in the same lazy situation as myself, keep that in mind...or something.
 
Dec 12, 2011 at 12:21 AM Post #5,424 of 11,345
keeping the vents open will allow the air to escape while the materials you use absorbs/slows down the reflections. think of it as a ported speaker box. i put fiberglass in my cups over the vents.
 
Dec 12, 2011 at 12:25 AM Post #5,425 of 11,345
Quote:
rexaeterna said:
keeping the vents open will allow the air to escape while the materials you use absorbs/slows down the reflections. i put fiberglass in my cups over the vents. think of it as a ported speaker box.
Click to expand...


Yeah, I just didn't think poking it with a thin piece of lead would make a difference. Ideally, I'd say one should open the cups and adjust the stuffing as needed if they suffer the same problem, but if you're lazy, poking it with a pencil apparently works. I ended up having to close the bottom vent up quite a bit, but I am definitely liking them a lot right now.
 
Side note: I do seem to be a bit bipolar at times with my headphones. Let's just say it depends on my, um...state of mind. Sometimes my ears are just in a more forgiving mood. 
 
Dec 12, 2011 at 2:29 AM Post #5,426 of 11,345


Quote:
kingoftown1 said:
without blind testing this is always a possibility...
 
Click to expand...



I usually do my mods one ear at a time (err... one cup at a time) and listen back and forth with music and test tones/sweeps as well as switch sides (since I do have a slightly different hearing in each ear) to determine any differences. 
 
Dec 12, 2011 at 4:43 AM Post #5,427 of 11,345
To me, the only thing that modding one ear at a time does is so I can tell whether there was any difference at all.  Any more than that I just can't figure it out since having different sounds coming into both ears is kind of confusing and disorienting...and if one side is louder than the other then that skews it significantly too.
 
Dec 12, 2011 at 5:11 AM Post #5,428 of 11,345
I find that running frequency sweeps with different configs in each ear lets me hear the relative changes in peaks/valleys. You can hear the "center" shift left or right when the peaks don't line up. 
 
Dec 12, 2011 at 11:18 AM Post #5,430 of 11,345


Quote:
dabomb77766 said:
I unfortunately have a bit of high frequency hearing loss in one ear so that happens anyway with me, no matter how balanced the channels are...
Click to expand...



I'm in the same boat. After years of standing at a table saw to the left of the blade my right ear is at a disadvantage. Doesn't seem to affect me too much as long as the source is in Stereo, but if it's Mono I definitely notice the skewness.
When testing mods I now use my vintage integrated amp that has the option to reverse channels and then I flip the headphones. If it sounds the same I know the phones are reasonably balanced. OF course I could just flip the phones in mono, but since my hearing is skewed I am not all together sure my amp is perfectly balanced.
 
You must log in or register to reply here.

Users who are viewing this thread

Total: 5 (members: 0, guests: 5)
Back
Top