Recent content by Longfellow78
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Fostex T50RP Incremental Mods and Measurements
Thanks ill look into that!- Longfellow78
- Post #2,858
- Forum: Headphones (full-size)
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Fostex T50RP Incremental Mods and Measurements
Well well! Now THIS is a post!!!!!: http://archimago.blogspot.com/2021/05/modding-dekoni-blue-arch-mod5-streaming.html This dude mods his dekoni blues and talks about this exact issue, and does the frequency graphs at stock, after putting in his paxmate/silverstone and using felt (instead of...- Longfellow78
- Post #2,856
- Forum: Headphones (full-size)
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Fostex T50RP Incremental Mods and Measurements
Thanks for the helpful posts. To be clear I haven't sealed the front of the driver at all except for the strip of tape over the centre squares. For the felt I mentioned that is only around the outer rim like argons for a little less reflection - probably does nothing. I've still got the stock...- Longfellow78
- Post #2,855
- Forum: Headphones (full-size)
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Fostex T50RP Incremental Mods and Measurements
Ok I won't take off the paper, I think I would want to replace it with something else and although I saw M3 medical tape can work, this was for the Mk2. Argons use a weird sort of fluffy glue/paste, but it's too risky. Ok so a little progress. To be clear I was not unhappy with the sound, I...- Longfellow78
- Post #2,851
- Forum: Headphones (full-size)
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Just listened to some Fostex T50RPs today... WOW!
I just filled up all the holes on the frame of my Mk3 driver with plasticine. There are 18 separate holes. I'm not sure which hole NOT to fill is referencd here. A hole in the baffle? Or one of the ones in the frame on the driver itself. Can anyone clarify please and why not to fill this hole...- Longfellow78
- Post #11,346
- Forum: Headphones (full-size)
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Fostex T50RP Incremental Mods and Measurements
Hey. Thanks. Yes both driver papers have the nasty glue on them. Will removing the paper lower the treble? I already am using t60rp pads. I never tried it without the felt over the rear port tho as I thought it would be too bassy. Guess I need to experiment.- Longfellow78
- Post #2,849
- Forum: Headphones (full-size)
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Fostex T50RP Incremental Mods and Measurements
So I finished the headphones. Decided to take the extra damping out if the cup and leave it in the centre. Felt on rear port. Cotton wool, plasticine on the baffle, 1mm felt on the front of the baffle around the outer rim, and regular foam around the driver. With t50rp pads. Tried closing 3...- Longfellow78
- Post #2,847
- Forum: Headphones (full-size)
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Fostex T50RP Incremental Mods and Measurements
So this is the inside of one of my cups. Trs connector installed. Plasticine on the back of the baffle and in the centre. Now I put paxmate all over the inside including the cup walls. I've seen no-one else do this except in the original mad dog mod. The argon t50 also has the entire cup damped...- Longfellow78
- Post #2,846
- Forum: Headphones (full-size)
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Fostex T60RP
Hi. thanks. I have bought some bits which I think are right. Please can you confirm my understanding so i can solder. I have a balancxed cable with 2 blue and 2 white wires which I will test for connection with my ammeter, and it has copper grounding. Please see the attached pics. My...- Longfellow78
- Post #1,466
- Forum: Headphones (full-size)
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Fostex T50RP Incremental Mods and Measurements
Oh yes the t60 has the thinnest/lightest ring. I believe the t20 has a lighter foam ring than the t40 and t50, but I'd be surprised if the supposedly major tuning differences between them are just due to that and not some effect on the rear port. Maybe that's just marketing. Anyway. I think I...- Longfellow78
- Post #2,844
- Forum: Headphones (full-size)
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Fostex T50RP Incremental Mods and Measurements
Yes sorry I meant the rear vent. Paxmate looks a little thicker but I think they do the same job. Oh yes. Argons have significant mods to the front side of the baffle. Firstly there is a 1mm layer of felt around the driver in the inner/lower depression. Then there is a piece of impermeable...- Longfellow78
- Post #2,842
- Forum: Headphones (full-size)
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Fostex T50RP Incremental Mods and Measurements
Thanks for post. I am going to install dual trs connectors for balanced and block up the existing port so imbalance should be less of a problem. Removing covering over bass port to make it a t20 also not a problem. I have the t60rp pads already. I have a lot of paxmate so assume I can use this...- Longfellow78
- Post #2,840
- Forum: Headphones (full-size)
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Fostex T50RP Incremental Mods and Measurements
What are your preferred mods?- Longfellow78
- Post #2,837
- Forum: Headphones (full-size)
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Fostex T50RP Incremental Mods and Measurements
Thanks for the quick and comprehensive post. I had the mayflower baffles on my t60rp (which I sold). Yes the bass was very bloated but the argons also have sealed front ports and so do all mk2s but don't have that bloat. I wonder if the different paper on the back of the driver makes it have...- Longfellow78
- Post #2,836
- Forum: Headphones (full-size)