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.

Group Build: Dynafet

Featured Replies

  • Replies 1.4k
  • Views 278.7k
  • Created
  • Last Reply

Top Posters In This Topic

Most Popular Posts

  • Did some work on mocking up the chassis and getting into a more listenable state. I will need to get aluminum top/bottom and rear panels for this (not using the steel ones that it came with). I'm also

  • Finally got around to casing this (also posted in the What are you building thread. Needs a bit of wiring cleanup, and the transformer needs to get bolted down, but sounds great.  

  • Got both boards up and running with mods 1 and 2 above. Ran RMAA on it at 150mA, 100mA and 75mA bias. I think 150mA is probably the best. See what any of you think of the plots attached. Als

Posted Images

  • Author
What should I expect soundwise from a Dynafet?

pshaw.. no one is actually going to listen to these, they are just for show :)

What's the parts count per board?

And it's one thing to populate a few boards, it's another thing entirely to build an amp soup to nuts. Even with a fully machined chassis it's no small feat with an amp of this complexity.

I understand. I can populate the boards and probably debug problems (with just a little help. :rolleyes:) I'd need lots of help when it comes to casing it up. However, if some of the casework is done, I might be able to muddle through it.

Of course, it really depends on what cost we are talking about. My question may be quite moot (to me).

pshaw.. no one is actually going to listen to these, they are just for show :)

Won't say what they cost, won't say what they sound like. I'm so glad I'm in for one! :D

  • Author
Won't say what they cost, won't say what they sound like. I'm so glad I'm in for one! :D

I'd say they compare favorably to commercial amps in the $5K range.

  • luvdunhill - 8 - 4
  • Asr - 0 - 4
  • Stretch - 0 - 4
  • looser101 - 4 -2
  • PFKMan23 - 0 - 4
  • Naamanf -? - 4

    As for the cases I think the Hi-Fi 2000 Pesante Dissipante is a good option. And it seems if you order 4 or more they don't charge shipping. Could also be an error in their software.

  • luvdunhill - 8 - 4
    Asr - 0 - 4
    Stretch - 0 - 4
    looser101 - 4 -2
    PFKMan23 - 0 - 4
    Naamanf -? - 4
    Icarium - 0 - 4
I'd say they compare favorably to commercial amps in the $5K range.

Yeah yeah, but how do they compare to Singlepower amps in the $15K range?

  • Author
Yeah yeah, but how do they compare to Singlepower amps in the $15K range?

good question. Better find an appropriate floor wart for interested builders quick!

Won't say what they cost, won't say what they sound like. I'm so glad I'm in for one! :D

LOL with these credentials I think I'm still less sure to participate ;D

How about a case with integral heatsinks?

Something like this:

media%5Cpesdiss10x7.jpg

Man that's like exactly the case my Rudistor RP010 Classic was in. I rather liked the case though I could have done without the handles that I guess you can wrap cables around.

.

Kevin's orginal design shows half the output devices.

Does leaving half the output devices unpopulated

change the sound quality of the amp if driving any normal headphone short of a K-1000 ?

  • Author
Kevin's orginal design shows half the output devices.

Does leaving half the output devices unpopulated

change the sound quality of the amp if driving any normal headphone short of a K-1000 ?

If you happen to have a list of current requirements for all headphones minus a K-1000 I can try and answer that one for you ... otherwise, remember, there is no such thing as overkill in this hobby, especially in a Kevin Gilmore design :)

Man that's like exactly the case my Rudistor RP010 Classic was in. I rather liked the case though I could have done without the handles that I guess you can wrap cables around.

More like this? no handles

pesanted2u10mm_0001.jpg

  • Author
I'd say let's get a quote for those cases.

I'm curious what the C/W rating is of the heat sinks are though.

Looks like we're talking around 3.75W per device...

  • luvdunhill - 8 - 4
  • Asr - 0 - 4
  • Stretch - 0 - 4
  • looser101 - 4 -2
  • PFKMan23 - 0 - 4
  • Naamanf -? - 4
  • Icarium - 0 - 4
  • Dreadhead - 0 - 4

Maybe willing to pay for a couple boards in addition to my costs for the builders trouble.

I'd say let's get a quote for those cases.

Looks like for an order with over four units the price is $85 for the 2U 300mm and $100 for the 3U 300mm. For some reason shipping costs are not shown when I add more than three to the cart. If shipping isn't free I would say add about $50 to the price. That's with current exchange rates.

If I might be so bold, those unwilling or unable to build should be prepared to offset the costs for the builders.

Goes without saying.

Also, you're a prince! :cool:

  • luvdunhill - 8 - 4
  • Asr - 0 - 4
  • Stretch - 0 - 4
  • looser101 - 4 -2
  • PFKMan23 - 0 - 4
  • Naamanf -? - 4
  • Icarium - 0 - 4
  • Dreadhead - 0 - 4

Maybe willing to pay for a couple boards in addition to my costs for the builders trouble.

I guess my offer to build doesn't count :rolleyes:

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.