I received mine in less than a week, 15K/600, wrong choice on the pull down menu.It will be a different pin out .
BDP
Bummer. So you got 15K/600 instead of 600/15K? As many as are being bought I am surprised they didn't ask. At least they are inexpensive and shipping quickly!
Russellc
I have been watching this and unlike my attempt at building F5t, I will finish this one. I just ordered two of the transformers from Edco 600 ohm/15kohm pc mount (shipping was more than the transformers). I will be watching for a group buy on the boards, hopefully that will be soon. Thanks for all the effort of those that put this together.
It is too terrible to think about -- DIY is a solace!
Sent from my iPhone using Tapatalk
I found this while reading a thread here and following a link on youtube for the impatient builders wanting to build the M2. I have seen videos and read articles on how to make your own boards but this is one of the easiest and simplest ways I have seen using common chemicals that are easy to purchase. If I were more ambitious I would give it a try with my own boards just to see if I could do it and if it would work.
https://www.youtube.com/watch?v=wY6oiEhyfIc
https://www.youtube.com/watch?v=wY6oiEhyfIc
. Anyway idle.
Edcor transformers in Europe
Friends, Europeans, Countrymen!
I got in touch with don-audio.com on the Edcor transformers. Aaron will source them and is so kind to offer a 25% pre-order dicount for 40 pieces. With the discount the price is 15.21€ + VAT a pop. Please see don-audio.com for the T&C on shipping (worldwide...).
To get the discount you can use the Coupon-Code DIYAUDIOCOM
You find the web-pages in Aaron's email below.
No commission for me, just publishing the deal.
For those who read German I enclose Aaron's email
Friends, Europeans, Countrymen!
I got in touch with don-audio.com on the Edcor transformers. Aaron will source them and is so kind to offer a 25% pre-order dicount for 40 pieces. With the discount the price is 15.21€ + VAT a pop. Please see don-audio.com for the T&C on shipping (worldwide...).
To get the discount you can use the Coupon-Code DIYAUDIOCOM
You find the web-pages in Aaron's email below.
No commission for me, just publishing the deal.
For those who read German I enclose Aaron's email
Keep in mind that any reasonably low output impedance preamp (say <100
ohms) will drive this circuit without need for the input buffers.
Keep in mind that any reasonably low output impedance preamp (say <100
ohms) will drive this circuit without need for the input buffers.
I know you've already given us a few examples but is there any chance you might put together a dc coupled buffer preamp capable of driving any conceivable difficult load? (possibly Firstwatt product potential)
If you had the choice of high current (eg 15mA) cascoded push pull jfet buffer vs high current (eg 15mA total) parallel pair push pull jfet buffer, which would you choose? (I suppose there is also the option of doing both for 30mA total). Edit: For push-pull that would be double those figures of Class A operation.
Do you feel 15mA (30mA push-pull drive capability) in a buffer is enough to drive any conceivable difficult load, or would you go higher?
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Is anyone currently actually building that thang? Or are all twiddling their thumbs waiting for the PCB?
I am twiddling my thumbs waiting for the jfets, transformers, inspiration for a cunning case etc.
And I am still researching parts: what do you guys recommend as insulators for the MOSFETs and where do you source it?
I am twiddling my thumbs waiting for the jfets, transformers, inspiration for a cunning case etc.
And I am still researching parts: what do you guys recommend as insulators for the MOSFETs and where do you source it?
I'm a sissy, not going to attempt this point to point, in idle mode until a board shows up.
That said, I have a single ended tube amd and a class D sitting on my bench waiting to be finished.
Need to decide if I will attempt the P2P gainclone that I have the parts for!
As well, need to get my Raspberry PI out of an old VCR case, and into an nice chassis.
So, not lacking for projects.
In a rare show of restraint, parts have not been ordered yet.
That said, I have a single ended tube amd and a class D sitting on my bench waiting to be finished.
Need to decide if I will attempt the P2P gainclone that I have the parts for!
As well, need to get my Raspberry PI out of an old VCR case, and into an nice chassis.
So, not lacking for projects.
In a rare show of restraint, parts have not been ordered yet.