Orthodynamic Roundup

[wualta]

 
Quote:

Originally Posted by nick n /img/forum/go_quote.gif
 
...works great on the leather couch ( or Sofa or even Chesterfield to others )
 
The project zone is slowly taking over the dining room table area.
 
 No idea of a name yet, it'll come to me. ( anyone ? )
 

We call 'em "davenports" here in the States. Get 'em from a factory in Iowa.
 
You have a dining table area that ISN'T taken over by the spreading Project Zone? C'mon, get with it.
 
Dead Rebel (the best kind). I can hear, nay, sense the seismic groans from here..
 
Seriously, it looks reeeelly neat.

 

[kalbee]

Is it just me or the yamaha's like to be enclosure free?
Bought some open back foster phones to try with my HP-1 and... It's a bit too small for the drivers (the electrodes stick out otherwise it's a snug fit) and it seems to sound pretty good... YHD kinda thing?! Will probably cup openings to make it fit.

Never heard of that brand of headphone but it seems to have been vintage and the stupid driver design only let me remove it from baffle by tearing through its voice coils! Kind of a shame, they sound horrible but the magnet is a ring shaped dynamic. Ripped off the backing and the sound opened up quite a bit albeit with high bass distortion (think distortion pedal!) at high volume. Could have played with the hole size a bit but alas left driver died. Or are there any ways to save them?

Fun fact: the earphone section comes off tool-less!

 

[nick n]

Which fosterphones did you get? Got a picture maybe?

 

[kalbee]

Dero D-560 and something along the lines of "The Headphone People" no idea but I paid 10$ total for it.
 
The Dero is decently comfortable, and the size of a circumaural headphone, though with on-ear pads. There's a volume pot on each side, which is quite nice to use at home when people start talking to me... which means a lot more wiring to mess with if I want to keep that...
But in the end due to the protruded center of the baffle grill, the yamaha driver sounds pretty bad so it's a no go. The stock headphone itself sounds pretty nice.
 
The Headphone People - Headphone 2001 is the one whose size is about the same as the yamaha driver. Though it would fit turns out no. Seems to be a potential fosterphone though. I've only tried placing the driver inside (did not fit at all, it wasn't flush and was all over the place) and putting it up to my ear and sounded pretty decent. There's open cell foam at the back. But since the stock drivers sounded horrible (but I broke one of them anyway, can't open up the back and try messing with it anymore) with stock pad openings much smaller than the driver, not only was the sound awfully congested some tones were slightly off.

 

[Lurkumaural]

Quote:

Dero D-560 and something along the lines of "The Headphone People" no idea but I paid 10$ total for it.

 
Well, they certainly look fantastic...
 
I bought this one for $10 shipped.  Looks and feels like crap.  Doesn't even fit over-ear despite its size and shape.  This one's a bust IMO, I can't imagine even trying to make it work.
 
... but I'll give it a shot.

 

[kalbee]

Aye... The Headphone People one also isn't very comfortable. The headband is like two steel bars that like to curl, and there isn't much mechanisms to make it conform to the ears. Much smaller than I was expecting too, but seriously not having to play with screws is so awesome. I'll post pictures of that weird headphone when I get home later (hopefully I remember).
The Dero does not seem like a good foster phone candidate unless I seriously mess with all the plastic.

In a side note I also sealed the drivers to the baffle on the HP-1 and also added cotton around the drivers. Gotta say I don't dislike it.

 

[leeperry]

This could make a nice foster too: http://www.sandberg.it/product/StreetBlaster-Headset
 
stock drivers are 57mm so anything would fit, and the headband looks pretty comfy...it sells for $20 shipped in Europe.
 
Quote:

Strange, I just used it and it works ok. If you give me a search page and which results in it are broken, I can check what's happening.

Well, I saw a Wharfedale ID1 for sale so I wanted to know what it could sound like as I'm a bit tired of bass shy vintage orthos. I didn't learn much and gave up on it eventually ^^
 
I don't really see how fridge magnets could make a die hard Yamie fanboy such as me any happier

 
Anyway, this link gives a lot of results that don't match once you click on them: http://headfi.qix.it/megathreads/orthodynamic-roundup/Wharfedale%20ID1/
 
For instance, this doesn't work: http://www.head-fi.org/t/111193/orthodynamic-roundup/14130#post_6593001
Quote:

#14142

apr 28, 2010
iQEM
…for all ortho's that available on indonesia: 1. Sansui SS100 2. Wharfedale ID1/Hifiman HE5 3. Fostex T10… sight...lol not as troublesome as ID1 to drive thought, even more open… that's why i love it...ID1 - stock form even still under amp… aggresive as SS100, neutral just like ID1, not to open or airy,… treble but not too sparkling as ID1 or bright as SS100...the bass…

 
And it's not even post #14142 either

 
Hope you can fix it, grazie mille in advance!

 

[yvfed1]

Greetings!
[size=10pt]I bought these Rotel-RH930 last year, from another member. I like the phones quite a bit.[/size]
[size=10pt]When I opened the phones and there was this green stuff, hard like a rock, in small pieces:[/size]
[size=10pt]It must have been a felt some time ago. I replaced it with black speaker gasket tape.[/size]
 
[size=10pt][/size]

 
[size=10pt]There’s also white, what appears to be a double-sided adhesive tape (above).[/size]
[size=10pt]I don’t know what it is for; it does not appear OEM. I kept it for now.[/size]
 
[size=10pt][size=10pt]Questions:[/size][/size]

1. [size=10pt][size=10pt]Should I remove the white tape? What could be the purpose of it?[/size][/size]
2. [size=10pt][size=10pt]The gasket material – is at appropriate or should I replace it with something else?[/size][/size]
3. [size=10pt][size=10pt]The pads are just a tad small in a diameter, 1.5 to 2 inch inside and less than a ½ inch thick. What effect a larger pad may have on the sound of this type of phone? Any particular recommendations?[/size][/size]

[size=10pt][size=10pt]Regards,[/size][/size]
[size=10pt][size=10pt]Eugene[/size][/size]
 
 
 
 
 

 

[JadeEast]

My guess would be that the tape was used to secure some felt or other material for tuning.
 

 

[nick n]

Is that gasket stuff porous at all?  You should try to keep something with a similar texture as the felt, if that was stock I don't know, because it may be there to help absorb some stuff. Either that or the gasket material will make a better seal around the perimeter ( is that why the felt is hard maybe it was used that way with glue that hardened?
 
Those have more in the way of highs don't they?
 
 I don't know what the pad openings look like for size, but generally if you were to experiment with smaller pad openings that may help with some more bass, or whatever bass they can produce.
 

 

[wualta]

Whatever it is, and it looks like doublesided sticky foam, the white stuff looks like a user mod. I agree with your assessment: doesn't look factory-installed . I think they were trying to seal the rear of the driver to the rear baffle to control backwave. The green stuff looks like a user mod too. Notice that the short piece of the black stuff doesn't fit its little trough. Doesn't look like felt, but it's hard to tell. Is the black stuff soft and able to act as a gasket?
 
Glad you like the sound, in any case!

 

[yvfed1]

OK, I opened the phones again. This is the white tape:

 
Removed it:

 
Pad removed:

 
Any suggestions - anything you would do at this point?

 

[yvfed1]

This is the gasket material. I dont' think it is porous. The question is - was there anything in the channel, from the factory....

 

[nick n]

My guess is that white ring is there as a mod to attempt to make sure the back of the driver exits only through the rear mesh by sealing around it, rather than letting it fly around inside (?).
 
 I would try , if this were me, to make sure the perimeter of the housing is sealed up, which may require a taller gasket or adding to what you already did with the speaker stuff in a continuous ring if possible as best as you can, and also using that white ring to make sure the rear of that driver does only vent out the backs and not anywhere else inside, making sure it seals against the rears of the cups and is high enough to do so.. ( if that's what it's function was ).
  That and experiment with pads of different middle openings.
 
At least if you do these things you know that you have eliminated leakages and only channel the rear backwave where you know it is going.  ( Eliminated unknown variables, at least a few. )
Sure is an odd arrangement of holes on that driver stator.  I wonder how they settled on that.
Am I correct that these are the back-electrets?
 
 
That's my thinking anyhow.   Anyone else?

 

[kalbee]

I would think the same. Though there should be better ways to do that other than double sided tape.

On another note, I may be able to acquire a HP-2... Seems the driver is smaller and should fit the foster phone, although that would increase cup volume considerably... There is one locally but I don't drive and I don't want to pay 125$ for it...