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Try ordering just one. I think two exceeds weight limit of USPS priority mail. You actually only need one of those for the M2. I have the same one and it's not lacking in power at all.
I called and ordered them over the phone - their shopping cart is messed up at the moment.
I'm building 2 amps, one with Toshiba outputs and one with Tea Bag specials.
I'm building 2 amps, one with Toshiba outputs and one with Tea Bag specials.
That's very interesting! Pls keep us updated on the results. I'm planning to build an M2 with the big Toshibas in the next future
That is my choice too, but must order two big heat sinks. I will not pull out my fine playing
Aleph J to fix this one.
Yes, they were between 8 and 9 mA Idss. I still have a stash from a few years ago, but my 2SJ's are running low, 20 left. Everything I build has them.
Haven't had time to do more. I have a coffee can I will cut up and cover the toroid.
Haven't had time to do more. I have a coffee can I will cut up and cover the toroid.
Why i ask about jfets ? Well i never see 2SJ/SK with leg's shape like on your photo but if you say is ok..
Yeah coffee can !
Good idea let's try
Best regards
Post scriptum: On my bench few 10 R wire wound's for jfet buffer who stuff nicely on pcb's
but they are magnetic and pretty close to Edcor...finaly my decision is not to use them for M2.
Those are the 2sK's. Cut and Reel type package. The transconductance measures good from a couple of data points.
Which transformers? The input transformers are from Edcor in Arizona and most people in the US use Antek power transformers. Are you referring to some other transformer?
Was year ago i stuffed by mistake with GR grade jfets all have the same legs shape so today i am always alarmed by see this cut & reel package.
Great they are BL ones 🙂
I see some amateurs use copper flexible rubans for shield do you know is efficient ?
Get this vintage LUX transformers they are dual magnetic shielded A.F
and perfectly balanced hum bucking windings version.
For my diy M2 i use Edcors anyway just must shielded them.
Attachments
Thanks for the measurement Dennis. My layout is comparable to the factory units. I guess I will have to call it good.
An update on a couple thing I tried.
A cover over the transformer, that made no difference.The shield on the transformer is doing its job.
I mounted some thick steel plates to the bottom plate that come up to cover the front of the Edcor transformers and that dropped the noise a little more.
Now I am about 0.26mV AC on the speaker outputs.
BDP
An update on a couple thing I tried.
A cover over the transformer, that made no difference.The shield on the transformer is doing its job.
I mounted some thick steel plates to the bottom plate that come up to cover the front of the Edcor transformers and that dropped the noise a little more.
Now I am about 0.26mV AC on the speaker outputs.
BDP
Hi folks a quick update in between my busy schedule
I have constructed some fully enclosed MuMetal box surrounds for the Edcor transformers
Next week I'm away overseas on work related business, and upon my return I will construct the Tirodial enclosure
Soon after I will swap over the newly arrived JFets
NOTE - Haven't sound tested for any changes as yet
Fingers crossed, if I can steel away some hobby time prior to my flight I may just get the Tiroidal enclosure finished
Until the next update instalment
FR
I have constructed some fully enclosed MuMetal box surrounds for the Edcor transformers
Next week I'm away overseas on work related business, and upon my return I will construct the Tirodial enclosure
Soon after I will swap over the newly arrived JFets
NOTE - Haven't sound tested for any changes as yet
Fingers crossed, if I can steel away some hobby time prior to my flight I may just get the Tiroidal enclosure finished
Until the next update instalment
FR
