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Orthodynamic Roundup - Page 57

post #841 of 23576
Guys I'm havin' one heck of a night, and had to share it with you. I've been working on a set of my Donut phones for Skylab. Today I got the finish on the wood cups and decided to put in some extra hours on assembly. I thought if I could get these together, I could spend tomorrow tweaking, and possibly get them shipped Monday.
There are a few differences between these and my Donuts. First off these have YH-100 drivers where mine have HP-1 drivers. Secondly I tweaked my design on the inside of the cups on this pair. The tweaks will remain my secret, at least for the time being. I also tried a different damping combination, same materials (felt and foam), but they're layered differently than mine. Skylab's are Cocobolo where mine are East India Rosewood.
The first thing I noticed before I cued up any music is that these are just a bit lighter than mine, and they clamp better, and feel very stable on my head.
I always kind of cross my fingers on the first listen, and say a little prayer that they're not too far from where I want them to be, but there's always some tweaking to do.
Rob (Skylab) really likes deep bass, and wanted to use the taller Beyerdynamic pads (Burgundy leather). So I had some trepidation and more than a little concern right off the bat, but had some ideas on what I might be able to try if they didn't have a decent amount of bass.
Well no guts no glory, so I cued up a CD. I waited that 2-3 seconds for my Parasound unit to read the disc and then...BAM!
If these puppies don't have enough bass for Rob, then he's insane! These flippin' things make my balanced DT990 600Ω's feel inadequate! It's not the least bit sloppy either, it's tight, tuned and blissful bass!
I don't want to go into too much detail until Rob has a chance to audition these, but I will say that these annihilate my Donuts, and I'll be swapping my YH-100 drivers into mine right away, hoping I can recreate what I'm hearing with these. They're not just bass monsters though, to my ear they have great balance with superb mids and highs too.
Needless to say I'm not tweakin' anything for fear of screwin' somethin' up. I can't imagine a better outcome for these drivers.
I'm sitting hear listening to KD Lang's Ingenue with a big stupid grin spread all across my face! Part of me secretly hopes he won't like these, and will send them back.
These are going to Rob tomorrow, because there really isn't any excuse I can think of to keep them longer...Damn it!
No pics at this time. I like to leave the unveiling for the owner. He should have them Tuesday or Wednesday though, so keep your eye out.
post #842 of 23576
Thread Starter 

Sawafuji Dynapleat midrange

It was meant as a cross between a true isodynamic and a normal dynamic. Here's the photo from the auction:

post #843 of 23576
Thread Starter 

Revenge Of The Ortho

Quote:
Originally Posted by swt61 View Post
..and then...BAM!
Immediately pass these to the Sennheiser spy just outside your window.

Needless to say, the rest of us will be awaiting the inevitable ortho vs. 'stat faceoff.

And the photos.

Isn't it great when something like this comes together?
post #844 of 23576
Oh man, the gods were with me on the Donut MkII.
post #845 of 23576
Quote:
Originally Posted by wualta View Post
It was meant as a cross between a true isodynamic and a normal dynamic. Here's the photo from the auction:

NICE!
post #846 of 23576
wow, if you can figure out a way to get lots of YH-100 type drivers, you will be ready to open a custom phone company like Headpile.....
post #847 of 23576
Quote:
Originally Posted by AudioCats View Post
wow, if you can figure out a way to get lots of YH-100 type drivers, you will be ready to open a custom phone company like Headpile.....
You know I'd have to pick a driver that's hard as all getout to find, and then have it turn out so well. Oh well I guess these will be a rare phone for a limited few.
post #848 of 23576
Well, I think it'd be reasonable to become familiar with some standard driver diameters and tell people to supply their own drivers.
post #849 of 23576
I just plugged in my stock YH-100's as a comparison with the same setup I'm using for the Donuts, and they sound like they're playing under water by comparison. Skylab's Donuts are so much cleaner and clearer it's almost unbelievable that they're the same drivers.
Here's the funny thing, before I started Rob's Donuts I compaired his stock YH-100's to mine. No noticable difference whatsoever.
Now my YH-100's play a lot louder at the same volume on my amp than the Donuts do. They're muddy and murky by comparison, but more efficient.
Is that due to the recable or more to do with the new dwelling?
post #850 of 23576
Quote:
Originally Posted by swt61 View Post
Now my YH-100's play a lot louder at the same volume on my amp than the Donuts do. They're muddy and murky by comparison, but more efficient.
Is that due to the recable or more to do with the new dwelling?
hmmm, more efficient but murkier..... sounds like how the 45x compares to the 55x.

I bet the recable made some difference (clarity). What cable did you use?
post #851 of 23576
Quote:
Originally Posted by swt61 View Post
Now my YH-100's play a lot louder at the same volume on my amp than the Donuts do. They're muddy and murky by comparison, but more efficient.
Is that due to the recable or more to do with the new dwelling?
I'm one of the most outspoken critics of upscale cabling here, but, if you can put that aside, i, don't think it's the cable.

The impedance difference couldn't possibly account for "a lot louder".

But having put them in a larger chamber with a bigger vent on the negative side would make them less efficient.

But better. As you've observed.
post #852 of 23576
Well they're actually in a snugger housing than stock. The mortise for the driver is just large enough for the driver and the damping, even though the cups are physically larger, but yeah the port on the back of the cup has quite a bit more venting than the stock housing.

And yeah you must be right, because the volume difference is pretty big.
post #853 of 23576
T50 Alert! You know where they are, on the 'bay of course

swt's donut business will make people hunt the YH-100 tiger to extinction, now what will happen to these poor Fostex T50 panda bears? They are supposed to have super bass too....

How high will they go?
$350?

$400?

$450?

The sky is the limit they say...





.........................
post #854 of 23576
Thread Starter 
Remember, the mere act of damping adds resistance, which by definition burns up some energy, in this case excess energy. A damped driver will always sound better but less loud than an undamped driver. The stock YH-100 sounds terrible (in a smooth sort of way)-- it's amazing that anyone who ever auditioned them ever bought them.
post #855 of 23576
That too makes sense. I added resistance with the damping, so it only stands to reason the volume would drop. Thanks. I feel like I'm learning more all the time, and I can use all the help I can get.

Quote:
Originally Posted by AudioCats View Post
T50 Alert! You know where they are, on the 'bay of course

swt's donut business will make people hunt the YH-100 tiger to extinction, now what will happen to these poor Fostex T50 panda bears? They are supposed to have super bass too....

How high will they go?
$350?

$400?

$450?

The sky is the limit they say...





.........................
I was watching those in my favorites, but have suddenly become less interested. My own Donut driver transplant is now at the forefront of my mind.

If they go much higher than they are now, it's a shame. I fear my YH-100 driver dependency will be at a high price from now on.
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