bluemonkeyflyer
Headphoneus Supremus
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Orthodynamic Roundup
- Thread starter wualta
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- amfiton-tds-15 audeze-lcd2-planar-magnetic-headphones fostex fostex-t50rp-closed-ear-stereo-headphones headphones mrspeakers-mad-dog-t50rp-mod sennheiser-hd-600 sennheiser-hd-800-headphones stax-sr-40 stax-srm-1-mk2 yamaha yamaha-electronics-hp-3-headphones yamaha-hp-1 yamaha-hp-3 yamaha-stereo-headphones yamaha-yh-1000
wualta
Orthodynamic Supremus
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Quote:
Oh, things like "At exactly 12:00 noon today, both electrets explosively depolarized, in accordance with the inexorable laws of physics. My lab assistant's pet budgerigar was slightly injured."
More seriously: Photos! plus, any changes over time, and of course descriptions of any modifications you might care to perform. Let us know how they're getting on in your household, or flathold. Just don't let them slip too far into the background, that's all.
Oh, things like "At exactly 12:00 noon today, both electrets explosively depolarized, in accordance with the inexorable laws of physics. My lab assistant's pet budgerigar was slightly injured."
More seriously: Photos! plus, any changes over time, and of course descriptions of any modifications you might care to perform. Let us know how they're getting on in your household, or flathold. Just don't let them slip too far into the background, that's all.
nick n
Headphoneus Supremus
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What would the offset holes in the magnets do?
Obviously anything on the front of the driver will still receive the regular amount of sound, so i am thinking, and hack the crud out of this idea, that the offset holes will both allow less hassly backwave through, and possibly damp the driver at the same time due to the overlapped areas it has to push against.
On the respective sides of course it will be flying in the direction outwards, but when returning it will have half the space to force against rather than a fully open hole that goes through to both sides. Overly confused description yeah i know.
Is this correct?
If this is the case i wonder at what point it becomes not worthwhile = essentially turning it into a monopole acting as a giant reflex disc when heard from the front.
Also I need to track down the link I had for the possible Watson clones before I can see if it's close enough for me to spill them beans. Was a month ago maybe so the pic should be viable I hope.
Obviously anything on the front of the driver will still receive the regular amount of sound, so i am thinking, and hack the crud out of this idea, that the offset holes will both allow less hassly backwave through, and possibly damp the driver at the same time due to the overlapped areas it has to push against.
On the respective sides of course it will be flying in the direction outwards, but when returning it will have half the space to force against rather than a fully open hole that goes through to both sides. Overly confused description yeah i know.
Is this correct?
If this is the case i wonder at what point it becomes not worthwhile = essentially turning it into a monopole acting as a giant reflex disc when heard from the front.
Also I need to track down the link I had for the possible Watson clones before I can see if it's close enough for me to spill them beans. Was a month ago maybe so the pic should be viable I hope.
kalbee
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Quote:
The last one I saw like that was a portable radio... No idea if it uses the same concept/drivers. I'm guessing not.
Awesome stuff you guys have!
Oh, by the way, this is how I ended up fitting the SFI drivers in the HP-2 shell.
Nothing to look at on the exterior--and the baffle is not even sealed to the cups properly. Baffle doesn't fit flush either, hopefully it won't deform too much over time. There's a strip of open cell foam around the drivers.
Due to the faulty drivers, sometimes I love sound on the right side... just gotta tap it like good ol' electronics and its up and kicking again.
As for the headband, for the moment I just cut a slit in the middle of the original HP-1 band I made.
The other one I made is like this:
The two bands can be split very widely to hold very well.
Oh, and meanwhile I also modded the headband of the Headphone People.
The last one I saw like that was a portable radio... No idea if it uses the same concept/drivers. I'm guessing not.
Awesome stuff you guys have!
Oh, by the way, this is how I ended up fitting the SFI drivers in the HP-2 shell.
Nothing to look at on the exterior--and the baffle is not even sealed to the cups properly. Baffle doesn't fit flush either, hopefully it won't deform too much over time. There's a strip of open cell foam around the drivers.
Due to the faulty drivers, sometimes I love sound on the right side... just gotta tap it like good ol' electronics and its up and kicking again.
As for the headband, for the moment I just cut a slit in the middle of the original HP-1 band I made.
The other one I made is like this:
The two bands can be split very widely to hold very well.
Oh, and meanwhile I also modded the headband of the Headphone People.
nick n
Headphoneus Supremus
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Nice work on the headbands!
Was that Music People one always a split one the padding you made looks pro.
Is there a reason you didn't make a continuous ring of cork around the baffle, even if it got cut into an odd shape? You can buy cork gasket sheets i think small ones at auto supply shops cheaply.
And for damping those what are you using again in the rears?
Was that Music People one always a split one the padding you made looks pro.
Is there a reason you didn't make a continuous ring of cork around the baffle, even if it got cut into an odd shape? You can buy cork gasket sheets i think small ones at auto supply shops cheaply.
And for damping those what are you using again in the rears?
vid
Headphoneus Supremus
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Quote:
I wonder if you're planning an electret revolution of some kind..? You already did it with the orthos, you know. I'll post updates as they happen.
BTW, nick, you mention in the driver pics thread that those Philips electrets have a driver with a diameter of 80 mm. The cup of the Unipolar measures slightly over 110 mm in diameter on a rough measurement, and the drivers are almost as big as the cups (MDR30 posted a pic here). I'm doing a crude interpolation in my head and guessing that the drivers aren't far off being ~100 mm in effective diameter, if not quite.
I wonder if you're planning an electret revolution of some kind..? You already did it with the orthos, you know. I'll post updates as they happen.
BTW, nick, you mention in the driver pics thread that those Philips electrets have a driver with a diameter of 80 mm. The cup of the Unipolar measures slightly over 110 mm in diameter on a rough measurement, and the drivers are almost as big as the cups (MDR30 posted a pic here). I'm doing a crude interpolation in my head and guessing that the drivers aren't far off being ~100 mm in effective diameter, if not quite.
kalbee
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Quote:
thanks!
The Music People headband was not split before, it was a single piece headband. The interior is two steel bands though, so I thought I'd split them for better support, like on the HD25's and such. They're not really meant for splitting though, so it doesn't go very far.
For the cork ring, it was just a lot more work. Mainly because I was unsure about being able to get a ring of such small width; the HP-2 baffle has a ring of its own for stiffness and to keep the baffle in place before the screws are set it. In order to get a full ring without having too much protruding, the ring would have needed to be 2~3mm wide, which on cork, was too difficult.
Now that the pieces are in place, I do wonder if even such a ring would fit since the screws aren't very long either. Though of looking for longer screws but did not have the chance to yet. As is, I can perhaps only get 1~2 revolution in per screw.
As for the damping, there's the rather thick stiff craft foam on the bottom (center cut-out at the size of the drivers to keep the drivers more or less still when I try to close them up). So essentially right behind the drivers is just the satellite dish from the Yamaha cans. Earpads are from Sony ZX-100
I didn't measure them yet but they don't sound terrible for my tastes
thanks!
The Music People headband was not split before, it was a single piece headband. The interior is two steel bands though, so I thought I'd split them for better support, like on the HD25's and such. They're not really meant for splitting though, so it doesn't go very far.
For the cork ring, it was just a lot more work. Mainly because I was unsure about being able to get a ring of such small width; the HP-2 baffle has a ring of its own for stiffness and to keep the baffle in place before the screws are set it. In order to get a full ring without having too much protruding, the ring would have needed to be 2~3mm wide, which on cork, was too difficult.
Now that the pieces are in place, I do wonder if even such a ring would fit since the screws aren't very long either. Though of looking for longer screws but did not have the chance to yet. As is, I can perhaps only get 1~2 revolution in per screw.
As for the damping, there's the rather thick stiff craft foam on the bottom (center cut-out at the size of the drivers to keep the drivers more or less still when I try to close them up). So essentially right behind the drivers is just the satellite dish from the Yamaha cans. Earpads are from Sony ZX-100
I didn't measure them yet but they don't sound terrible for my tastes
Two people have identified the Watson Mod.903 driver to be - Audio-Technica-built SFI 38mm driver used in Realistic PRO30 and Audio Technica ATH-1 and ATH-2 and Yamaha YHD-2
So that solves the mystery.
So that solves the mystery.
DefectiveAudioComponent
Headphoneus Supremus
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Cool, a previosly unknown orthodynamic
They do look like SFI drivers.
What's the diameter and thickness of those drivers? And how about a macro photo?
Quote:
They do look like SFI drivers.
What's the diameter and thickness of those drivers? And how about a macro photo?
Quote:
Got some unusual ortho drivers for your inspection and viewing pleasure:
Any cool information on these would be very welcome.
First the headphones.
The magnets in both drivers are slightly counter-rotated putting the holes out of symmetry.
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Quote:
The sfi sized drivers used in those phones are not actually the same.
And in the case of the Yamaha's the magnets are even different.
The sfi sized drivers used in those phones are not actually the same.
And in the case of the Yamaha's the magnets are even different.
kalbee
Headphoneus Supremus
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Oh? The drivers for the Pro30 are SFI drivers?
Quote:
The diameter of the plastic housing is exactly 41mm.
The diameter of the metal grills on either side of the housing is exactly 29mm
The housing exterior wall thickness is approximately 1mm
Therefore the driver is most likely 38mm
Sorry, no macro yet. Maybe tomorrow.
http://www.head-fi.org/t/202122/the-headphone-driver-pics-thread
- should be fairly easy to spot on the first page.
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I dont think they are the same as an SFI soundwise.
It seems these drivers were released with different magnets and tunings for different companies.
I dont think they are the same as an SFI soundwise.
It seems these drivers were released with different magnets and tunings for different companies.
JadeEast
Headphoneus Supremus
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They do look pretty much the same.
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