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The diyAudio First Watt M2x
The diyAudio First Watt M2x
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Old 26th April 2018, 06:45 PM   #11
vdi_nenna is offline vdi_nenna  United States
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This is really great, guys. Nice work! Will have people tinkering for months!

Couple of things. Does the buffer change the sound? Does the autotransformer need a shield? If I wanted to put some mu metal around the Edcore, is there space?

Thanks,

Vince
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Old 26th April 2018, 07:00 PM   #12
Mark Johnson is offline Mark Johnson  United States
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Here's a 2X magnification of one of the pictures in post #2, in case anyone is having difficulty visualizing the mother card / daughter card arrangement.

_
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Old 26th April 2018, 07:20 PM   #13
6L6 is offline 6L6  United States
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Click the image to open in full size.


Vince - No idea yet if the buffer actually influences the sound to a point that is audible through the transformer. I suspect yes, however I also suspect it's going to be a minor difference as it's a buffer. BUT -- the entire point is to try! This is the perfect chance to actually find out if a difference can be found that you prefer.

As for a shield, it certainly can't hurt, and there is room, though you'll need to fabricate something yourself.

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Originally Posted by Blk Dynamite View Post
@!$!% it, add me to the list who wants to try the M2x ha. Ill skip the F6 and make this one

Good plan. (That said, the F6 is wonderful...)
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Old 26th April 2018, 07:24 PM   #14
Blk Dynamite is offline Blk Dynamite  United States
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if you have a really good shielded encapsulated transformer, you should have any issues w interference correct?
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Old 26th April 2018, 08:09 PM   #15
bk856er is offline bk856er  United States
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This looks great! M2 remains one of my favorite/daily amps, so I will absolutely try this version and all of it's flavors.


BK
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Old 26th April 2018, 09:00 PM   #16
Murdoc is offline Murdoc  Germany
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I absolutely love your idea!
M2 is also one of my favorites, actually, I love it to be so non-fatiguing! That you two now give an option on the input buffer is great!
One question:
As you both do nothing without thought (at least here at diyaudio ), why did you chose to use screws but not the usual board connectors? Just curious and want to learn, if the screws are as good I love the idea to combine mechanical and electrical duties!

Ah, and I'm really interested in building one!

Cheers,
Matthias

PS:
The picture is just meant as an example of what I have in mind.
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Old 26th April 2018, 09:00 PM   #17
Nelson Pass is offline Nelson Pass  United States
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Think those bolts are big enough?

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Old 26th April 2018, 09:03 PM   #18
chrisb is offline chrisb
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well, when ya got nuts that size ....


when will we see this in the store, or do we need to know a guy who noze a guy?
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Old 26th April 2018, 09:06 PM   #19
6L6 is offline 6L6  United States
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I was interested in using this hardware, but it wasn't commonly available at Mouser...

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Old 26th April 2018, 09:08 PM   #20
6L6 is offline 6L6  United States
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chrisb - It will be available in the store, but exactly when I have no idea. Hopefully within a couple months, PCBs always seem to take much longer than we hope.

Until then you might want to PM Mark and get on the list for a set of the prototype PCBs that he made... numbers are very limited.
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