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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 06-20-2005, 02:00 AM   #631 (permalink)
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My Veda Audio Dynahi has a Cosmos potentiometer in it and it is awesome.
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Old 06-26-2005, 12:12 PM   #632 (permalink)
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Default my multi-hyrbid tube amp!

Hey all!!

my first time posting on this thread

well this is my multi-hybrid tube amp using the 6922 tube. powering it is a regulated 24v regulated supply from a 7824 regulator and some capacitors. At max volume and nothing playing there is a VERY SLIGHT audible hum. At the moment the amp is still without a case but still useable will get a mate to make me a case soon though.

in the dark

second pic

third pic


[EDIT]
no more hum now! it seems my AC power cable was close to the input signal and was causing a bit of hum. Just moves the power cable further away from the input signal wires and everything is hum free
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Old 06-27-2005, 05:15 AM   #633 (permalink)
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Originally Posted by pho_boi
Hey all!!

my first time posting on this thread

well this is my multi-hybrid tube amp using the 6922 tube. powering it is a regulated 24v regulated supply from a 7824 regulator and some capacitors. At max volume and nothing playing there is a VERY SLIGHT audible hum. At the moment the amp is still without a case but still useable will get a mate to make me a case soon though.

in the dark

second pic

third pic


[EDIT]
no more hum now! it seems my AC power cable was close to the input signal and was causing a bit of hum. Just moves the power cable further away from the input signal wires and everything is hum free
Good work! Dont the LM317 and IRF's get far too hot with those tiny heatsinks??
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Old 06-27-2005, 08:11 AM   #634 (permalink)
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Originally Posted by pho_boi
For the love of God, please resize. Or whatever other deity you happen to believe in.
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Old 06-29-2005, 09:26 PM   #635 (permalink)
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Default M3 with Crossfeed

I finally got back to my second M3 housed in the large group buy case to add the Crossfeed from Tangentsoft. It fit in easily and works very well. I used Tangent's rotary switch (4pole/3pos) with silent wiring option so I could line up the rotary with the M3 pots. The listening effects are pleasing with most sources I have tried. It is a fairly subtle amount of crossfeed when you listen to a full stereo signal. To see how much crossfeed you are getting (and to test your assembly), try unplugging one channel input at a time....it is surprising.

This M3 also uses Tangent's STEPS set to 24.9vdc, using the Amveco 70062 transformer and substituting in the LM338T regulator.

The M3 build discussion thread is located at:

http://www6.head-fi.org/forums/showt...0&page=1&pp=20




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Old 07-02-2005, 04:52 AM   #636 (permalink)
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Well, I finally got my PPAv2 cased up in my 20-series Par-Metal case and it's good to go.

A HUGE "Thank You!!!" goes out to my good friend Nate (n_maher), who spent the evening with me wiring components, helping with the casework and most of all, that early birthday present also known as a fully-populated STEPS!

Specs:
PPAv2.0
STEPSv1.0
Par-Metal 20 Series Case
THL Audio 50mm Knob
NKK Push-Button Switch
Cardas Female RCA's
Switched & Fused Power Inlet
Silver-Plated Copper Wire w/ Teflon Housing






As you can see, there was plenty of real estate in that case, but I wanted something that would match the rest of my stereo components with respect to width. And yes, I swapped out all of the silver hardware for black hex pan-head bolts. It's not 100% yet... it's going to get a few additional interior LED's, the NKK switch is going to be swapped out for the next size up once the drill bit that's big enough arrives, and while the rig runs dead quiet with my 650's, there's definitely buzz with low-impedence cans like my 325i's that we have to track down. But with the 650's, this thing really sounds amazing.

Keep an eye out for a fairly maxed Millett Hybrid in a matching Par-Metal case to complete the stack soon...
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Old 07-02-2005, 06:31 AM   #637 (permalink)
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mine new system.

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Old 07-02-2005, 11:47 AM   #638 (permalink)
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Ok, because I'm on holidays at the moment I decided to build another multi hyrbid. But this time I reduced it size by quite a bit, the board also has a power regulator circuit also.



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Old 07-05-2005, 12:37 PM   #639 (permalink)
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Sorry ISP nuked by web page.
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Old 07-05-2005, 03:07 PM   #640 (permalink)
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Default Second Millet Hybrid

I am glad that I only purchased 2 boards, I could not let the 2nd board sit withour building it.





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