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Go Back   Head-Fi: Covering Headphones, Earphones and Portable Audio > Misc.-Category Forums > DIY (Do-It-Yourself) Discussions

Meier Audio CORDA HEADSIX & The Most Recent Sponsored Threads

Celebrating 6 years of Head-Fi, Meier Audio introduces the Limited Edition HEADSIX (portable headphone amp) Head-Fi Support Sales Action




 
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Old 05-24-2008, 09:26 PM   #3281 (permalink)
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Originally Posted by fiddler View Post


I love that INDUSTRIAL feel to it. Throw some NIN and Beers in to really appreciate it. I like it. Good job.


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Old 05-25-2008, 07:41 AM   #3282 (permalink)
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Originally Posted by Ferrari View Post
agutt, the case is a HiFi-2000 Galaxy GX248 with 10mm (optional) face plate I got at their webshop: Modushop.biz.


Edit: In the US, this case can be found at Teko under part nr. DS2480.18.
What about the feet ?
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Old 05-25-2008, 01:41 PM   #3283 (permalink)
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Originally Posted by lordvader View Post
What about the feet ?
The feet are made by Mitron in Taiwan.
In the US, these feet can be found at this shop.
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Old 05-25-2008, 03:12 PM   #3284 (permalink)
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I looked for feet similiar to these in US. Tough to find for me anyway.

If you follow the link they're "out of stock" w/good reason. Look great @ reasonable price.

BTW Ferrari, fabulous casework.

Edit: oops, my bad, they have others similiar in style.

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Old 05-26-2008, 02:13 PM   #3285 (permalink)
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Photos of my M^3 and S11, finally, with front and back panels completed. Here it is still naked from the front:


From the top:


From the back:


And also my Millett Hybrid Max. It wasn't quite finished in these shots; just needed some more wiring and casework which is now done:


And the obligatory night tube shot:


Both amps all hooked up, with Big Daddy on guard duty:


And from the top:


Last thing to do is shorten the volume pots a little so that the volume and gain knobs fit flush with the front panels.

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Old 05-26-2008, 04:05 PM   #3286 (permalink)
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Very nice Beefy
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Old 05-26-2008, 06:20 PM   #3287 (permalink)
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Originally Posted by Beefy View Post
Photos of my M^3 and S11, finally, with front and back panels completed. From the top:
Don't mean to be harsh, but it looks like you are attaching the ground from the AC line filter to your toroid transformer mounting bolt (entree module mounting on the aluminum back plate as far as I can see on the pic of the σ11 (?). If this is the case, it will defenitely resulted in a closed/completed conductive loop passing through the center hole of the toroid (starting from the outside of the toroid), which in turn resulted in a "short-circuited turn".

To avoid the "short-circuited turn", the ground from the AC line filter should NOT be connected to the toroid center mounting bolt.
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Old 05-26-2008, 07:19 PM   #3288 (permalink)
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a self tapping screw in the bottom right angle works in the hammond case if you dont want to drill another hole.
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Old 05-27-2008, 12:19 AM   #3289 (permalink)
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Originally Posted by Ferrari View Post
Don't mean to be harsh, but it looks like you are attaching the ground from the AC line filter to your toroid transformer mounting bolt (entree module mounting on the aluminum back plate as far as I can see on the pic of the σ11 (?). If this is the case, it will defenitely resulted in a closed/completed conductive loop passing through the center hole of the toroid (starting from the outside of the toroid), which in turn resulted in a "short-circuited turn".

To avoid the "short-circuited turn", the ground from the AC line filter should NOT be connected to the toroid center mounting bolt.
No, be harsh, I wouldn't post it if i didn't want feedback!

Do you have a link handy that explains this? Googling the term doesn't quite lead me to toroids for dummies. I fail to see a problem, since the centre screw isn't actually electrically attached to anything in the transformer. Or is it an EMI thing?

Cheers!
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Old 05-27-2008, 01:54 AM   #3290 (permalink)
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That is very much a shorted turn you've created. You should never have anything conductive that creates a loop through the centre of the toroid. Move the grounding wire to anywhere else and you're fine. DO NOT TURN THE AMP ON BEFORE DOING SO!!!

It's briefly illustrated at the bottom of this page -http://www.bicronusa.com/tpt_designenhancements.html

Edit: to further see, stick a multimeter set on ACV between the top mounting plate and the chassis and you'll see that there is a small voltage, this is equivalent of a secondary winding of 1 turn
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