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Orthodynamic Roundup - Page 76

post #1126 of 23372
Oh boy, don't get me started. Two Elektronika phones are lost in mail somewhere, stupid Ukrainian mail system lost the box, I think. I told my fiend to use Meest , as they ship very fast and I never lost a parcel, but he wanted to save some $ on shipping.

On a good note he is looking into making an Uber Stax transformer box for me. Handmade transformers and all that jazz. I will report on that in the Stax thread. Right now I am waiting for my SRD-6SB to come in, so I can listen to my newly acquired SR-Lambdas. So I am kinda part of team ortho, in a planar way.
post #1127 of 23372
Quote:
Originally Posted by ericj View Post
I really like the QP85 for movies & tv shows with extensively mixed ambient sound.

House MD, for example. But don't watch the reruns on cable w/ floats - they snip every frame they can to squeeze in a couple more commercials, and the continual tempo changes are nauseating.

I'm curuious how the isodynamic version compares - especially since i'm getting it cheaper than the dynamic version.
I have been using my QP85 for avant acoustic jazz, IMHO they sound better for this kind of music than all other phones I have. Lets see how they compare with Stax Lambdas.
post #1128 of 23372
Thread Starter 
Quote:
Originally Posted by FooTemps
The YH-100s are one of the few headphones I've heard that it sounds nice and clean on.
I think any properly damped Ortho would do well in this test. I want to be fair to the DT 990 though. Did you run this test both at low level and disco level? The DT 990 is a more difficult load, after all, and the amp might have been clipping.


Quote:
Originally Posted by FooTemps
The best solution is probably a large filter disc along with a reflex disc/dot.
Did you try a layer of felt backed by a disc of SecretFoam?
post #1129 of 23372
Thread Starter 
Quote:
Originally Posted by Faust2D
Oh boy, don't get me started. Two Elektronika phones are lost in mail somewhere, stupid Ukrainian mail system lost the box, I think.
All I can say is: Dang!

Quote:
Originally Posted by Faust2D
On a good note he is looking into making an Uber Stax transformer box for me.
That is good news.

Quote:
Originally Posted by Faust2D
Right now I am waiting for my SRD-6SB to come in, so I can listen to my newly acquired SR-Lambdas. So I am kinda part of team ortho, in a planar way.
Not to confuse anyone, but the term orthodynamic doesn't in itself specify how the force is generated (could be magnets, could be electrostatic force, could be thousands of tiny hammers), so technically, in a twisted way, a Lambda is an ortho 'phone, since the driving force is delivered in a direction orthogonal to the plane of the diaphragm. To create confusion we could call it an orthostat.

You'll get a big kick out of the Lambdas.

.
post #1130 of 23372
update:

The white filter fiber we used is not the same as ( or even close to) Wualta's "fish foam". When I said it was similar I was thinking the fiber they used in fish tank filter bags . I was thinking the wrong thing.........
When searching for that SS-100 driver post I re-visited some of Wualta's posts, the "fish foam" showen in the picture is really different.
Sorry about the confusion. I will go back and edit related posts later.

Looks like the SS-100 drivers are already sold out, I should have bought a pair earlier.. since the Yh-1's are around $100 now a days, I don't see myself spending that much money just to get them for drivers. So the SFI tweeters I already have will be the last and only ortho's I will have.

I have decided to quit buying everything dynamic (including ortho), all resources will go toward electrostatics. Now the ortho price wouldn't matter to me any more, I'd let the secret out: the high density foam was from the inside of HP inkjet printer cartridges. The one I took apart was an old HP23, big cartridge. you should be able to find the empty cartridges in your IT department's surplus room or in a thrift store.
I think it should be called the HP foam from now on.

So, I probably won't visit this thread often any more. Have fun guys, orthos are great.
post #1131 of 23372
post #1132 of 23372
Thread Starter 
AC: Thanks for sharing.

'Stats are great too-- the trick is to find one with bass. Have fun, and I'll see you on the evergrowing Stax Thread.

Has anyone else tried, or does anyone have, the kind of very fine opencell foam suitable for acting as a wick in an ink cartridge? All my foam is relatively coarse because it was used for packing. I'm sure there are other sources. Perhaps the air filters for some lawnmowers.

Oh-- I can't take credit for the idea of using "fishfoam". That was ericj, I believe. But there's fishfoam (the very coarse opencell foam) and there's the fine polyester fiberfill "wool" (fish fluff?). Both are used in aquarium filtration, but they have very different functions in a headphone enclosure.

.
post #1133 of 23372
I think the technical term for fishfoam is reticulated foam.

It's graded in pores-per-inch.
post #1134 of 23372
My Mum has some Yamaha Orthodynamic HP-3 headphones... My brother has been using them as cue headphones when mixing (in fact I used them when I did my Drum & Bass mix the other week!).

I've just got hold of them and I'm listening to them with my Xtra X-1.

Lightweight bass and not much treble extension but sound pleasant enough, very neutral I suppose and vocals sound really natural... Not at all bad for their vintage. My Mum said she bought them 2nd hand about 30 years ago for £8 GBP.

The pads on them have cracked really badly... I don't suppose anyone has worked out what you can replace them with?

Edit... The bass isn't lightweight after all... It's just natural (I've been listening to my HD-25 SPs for too long )
post #1135 of 23372
Bloody wide soundstage too!

Hmm, the more I'm listening to these, the more I like them!!
post #1136 of 23372
Quote:
Originally Posted by AudioCats View Post
I have decided to quit buying everything dynamic (including ortho), all resources will go toward electrostatics. Now the ortho price wouldn't matter to me any more, I'd let the secret out: the high density foam was from the inside of HP inkjet printer cartridges. The one I took apart was an old HP23, big cartridge. you should be able to find the empty cartridges in your IT department's surplus room or in a thrift store.
I think it should be called the HP foam from now on.

So, I probably won't visit this thread often any more. Have fun guys, orthos are great.
Welcome to the dark side....
post #1137 of 23372
Quote:
Originally Posted by ericj View Post
Actually, our esteemed Master of Ceremonies bid for me by proxy.

The PMB-100 will be going to Duggeh for a week or two for him to enjoy before he forwards them on to me.

The crazy part is, the seller initially told me he would ship to the US, and he accepts paypal and everything.

So.. it seems that people are watching what I buy on eBay, I'd better start making sure the chaps who sell me the little blue pills have the auctions set to private. ;p

Its one of the float designs I haven't been photographed wearing and I have been curious about them. I also regret how short my dip in the ortho pool was. I got oh so distracted by the piezo love. I think I'll have to return to the frey. I do keep tabs on this thread and its contents though, in readiness for the time. I've got the stat, the AMT, the piezo so the ortho is the remaining planar on the list.

If anyone stateside needs a EU-fier to perform such services in the name of ortho redistribution I'm always happy to help.
post #1138 of 23372
Quote:
Originally Posted by Duggeh View Post
So.. it seems that people are watching what I buy on eBay, I'd better start making sure the chaps who sell me the little blue pills have the auctions set to private. ;p
hehe, my guess is that FV was looking for a new PMB-100 after having sold his pair to WertherDVX.

Quote:
Its one of the float designs I haven't been photographed wearing and I have been curious about them. I also regret how short my dip in the ortho pool was. I got oh so distracted by the piezo love.
Can't say as i blame you - the TakeT must be a phenominal 'phone.

Even my pioneer's show some real potential aside from the lack of much in the way of bass.

I need to return to my SE-700 soon to repair the adhesion on the right side film, and experiment with series resistors.

I started thinking about them as a capacitative load one day, and considered the concept of a low-pass filter, and oddly enough, the EIA (or whichever standards body it was) standard for a 120-ohm output impedance on a headphone jack should actually flatten out the response a bit.

So i need to build myself a little box with speaker wire terminals on one side and a headphone jack on the other, with dropping resistors and overvoltage protection on the inside, and see what they sound like out of a speaker amp.

They really are pretty smooth.
post #1139 of 23372
Thread Starter 
Quote:
Originally Posted by ericj View Post
I think the technical term for fishfoam is reticulated foam.
Oh, you're no fun.

Here's a look at the reticulated chapter in the Story Of Foam. Note the felted foam. Makes me wonder if the little discs of foam that come with makeup kits might work. Men, raid your womenfolk's secret bathroom stashes!


Quote:
Originally Posted by MrJoshua View Post
Bloody wide soundstage too! Hmm, the more I'm listening to these, the more I like them!!
Welcome to the nichiest of headphone niches. Interesting you should mention the headstage/soundstage, because that's not one of the Orthodynamics' strong points. Let us know if you decide to damp them.

Quote:
Originally Posted by Duggeh
If anyone stateside needs a EU-fier to perform such services in the name of ortho redistribution I'm always happy to help.
Mista Duggeh, you're on. We'll write songs singing your praises.

Quote:
Originally Posted by ericj
We might be able to build some sort of honeycomb with some of those, but nothing on that site compares to these beauties.
They are beauties, but couldn't we butt shorter sticks end to end?


Quote:
Originally Posted by ericj
They're polarized so that the long, skinny sides are the poles.
That's the kind we want, all right. Might have to have a custom-made set.


Quote:
Originally Posted by ericj
I'm thinking here of the possibilities of some sort of uber-wharfedale design.
Oo. Elaborate on this.
post #1140 of 23372
Quote:
Originally Posted by wualta View Post
They are beauties, but couldn't we butt shorter sticks end to end?
Yeah, we can. I guess. If we have to.

I'm more worried about how we fabricate steel plates to glue the magnets onto, frankly. Maybe someone who knows more about steel fabrication won't think it's such an issue. Or maybe there's something at the hardware store that we can just, abuse.


Quote:
Oo. Elaborate on this.
Of course we're still speculating until someone actually takes apart a wharfedale driver and takes some more pictures of it for us, but I was thinking big rectangular slotted magnet plates with between them a membrane with several stragegically placed shallow creases.

The big question mark is, do we clamp at two ends and then, what do we do to keep air from whooshing around the sides?

Edit: Oh, and sorry i haven't weighed the SS-100 drivers yet. Sunday afternoon i got talked into a 22 mile bike ride, which ended with me feeling truck hit me when i got home at 8:30. I spent this evening cleaning and rebuilding the filthiest, grimiest headphones I've ever even seen - which happen to be k240 sextetts.
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