Skip to content
View in the app

A better way to browse. Learn more.

www.Head-Case.org

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

The Orthodynamic Thread

Featured Replies

Those are awesome Doug, very cool indeed! :D

  • Replies 929
  • Views 185.2k
  • Created
  • Last Reply

Top Posters In This Topic

Most Popular Posts

  • mypasswordis
    mypasswordis

    So apparently monoprice cloned the Audeze LCD-2 and is selling them for $300 Left is LCD-2 and right is M1060 Released last week and monoprice website says it's out of stock until mid-April

  • kevin gilmore
    kevin gilmore

    got them, the connectors are pieces of crap, one side is intermittent if you shake your head hard, but sound wise pretty comparable to my lcd2 may actually be built a bit better

  • mypasswordis
    mypasswordis

    Yo leeperry, I see you screenshotting my above HC post in your HF FS ad, so I'ma screenshot on HC your screenshot on HF of my above post on HC:

Posted Images

You touch my ding ding dong...

Seriously: what is the G for?

Goldring.

That's the donor housing, a Goldring DR50.

I had those cables at my house for a bit too, and Nate outdid himself, they're frickin' nice!

Heh you went from massive relfex strip and damped the f' out, to no damping!

There is damping from some added magnetic effects?

I'm definitely also in favor of minimal damping. Although, this T20v2 is really giving me the finger about that. I already have 3 layers of felt in there and it's not enough.

Pretty much all my orthos have needed heavy damping. The exception seems to be the T50v2, which with the normal T50 damping (two discs of mineral wool) and some circumaural pads they sound quite good. I think all I need to do is experiment with circumaural pads to find the most compatible one.

  • 1 month later...
What pads fix the t50?

I used a pair of rectangular circum Pads from a 1970's Ross dynamic headphone.

Btw, Im talking about the 1980 vintage T50. NOT the modern T50rp

  • 2 weeks later...

How are you liking the grundig, interesting looks.

If by interesting you mean dead sexy, I agree. At least with the amazing pics DAC took on his fancy DSLR.

there was an original pair on the bay earlier today :) ..dB

I was watching that, too bad I am not making any audio purchases for a while. As for the head fi one, I am scared of buying orthos with permanent mods unless they were done by one of the pros ;). I had bought a HP3 on ebay but the seller never shipped it, hopefully getting a refund soon. Right now my ortho projects include finding a Pro-30 yoke replacement and finding a busted Bose headphone to put SFis in.

Pretty much all my orthos have needed heavy damping. The exception seems to be the T50v2, which with the normal T50 damping (two discs of mineral wool) and some circumaural pads they sound quite good. I think all I need to do is experiment with circumaural pads to find the most compatible one.

Where do you buy mineral wool? Haven't found anything online that seems suitable.

  • 2 weeks later...

Where do you buy mineral wool? Haven't found anything online that seems suitable.

Not entirely sure, Im using the actual Fostex wool biscuits from my NAD and Aiwa vintage T50 variants.

I guess something like the wool stuffing used in roof insulation would be similarish...(but careful with handling, do not inhale).

  • 2 weeks later...
  • 2 months later...

Has anyone here heard anything with the Strathearn drivers? Kinda a bit before my time. I've found some interesting info in US patent 4,156,801, sorta cool read for the planar dorks among us.

Anyone know if this ribbon takes the "most difficult to drive" award? 0.35 ohm nominal impedance (without the associated transformer box), I'd think that easily wins...

Some of the DIY amplifiers to drive this were pretty cool in and of themselves. Yes, direct drive a flat 0.35 impedance (250 Hz - 20kHz)

Anyways, seems one of the rare things that the interwebs never "rediscovered".

Edited by luvdunhill

  • Author

Ouch!! I thought the ML SummitX was bad with a dip to 0.4ohm at 18kHz... :palm:

Has anyone here heard anything with the Strathearn drivers? Kinda a bit before my time. I've found some interesting info in US patent 4,156,801, sorta cool read for the planar dorks among us.

Anyone know if this ribbon takes the "most difficult to drive" award? 0.35 ohm nominal impedance (without the associated transformer box), I'd think that easily wins...

Some of the DIY amplifiers to drive this were pretty cool in and of themselves. Yes, direct drive a flat 0.35 impedance (250 Hz - 20kHz)

Anyways, seems one of the rare things that the interwebs never "rediscovered".

Looks like a speaker driver. But Strathearn were part of the Rank Organisation. In turn these were all basically the old school Fostex drivers.

  • 5 months later...

I recently got another modded ortho in the mail from dbel84. I'm so amazed that I need to get a second opinion on this one :) I haven't tried out damping option B, but I'm hoping to help some help in this department, as I'm going to be real busy for the next couple weeks.. anyways, amazing stuff and perhaps someone else will post on this very headphone soon, after hearing it on a certain beta22 :)

Glad it made it safely :)

Once I am settled in new state/home etc, if there is interest, I will put together a "travel box" so that people can sample a few of the ortho flavours out there.

..dB

edit ....

looking forward to someone else's opinion on a certain B22 and now the comment of "some help which requires a screwdriver" makes total sense :D

I recently got another modded ortho in the mail from dbel84. I'm so amazed that I need to get a second opinion on this one :) I haven't tried out damping option B, but I'm hoping to help some help in this department, as I'm going to be real busy for the next couple weeks.. anyways, amazing stuff and perhaps someone else will post on this very headphone soon, after hearing it on a certain beta22 :)

What amazing modded ortho is that? (A secret? Like to share the secret in here?)

Ah, so there's the easy, kitchen table project you were alluding to. Can't wait to hear whatever they may be! Are they 4 pin XLR terminated? I hope so. I'll try them on the Krell too. :)

What amazing modded ortho is that? (A secret? Like to share the secret in here?)

Nothing secretive, just a pair of T10's ..dB

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Important Information

By using this site, you agree to our Terms of Use.

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.