1/15/2012
Original messages has been deprecated.
The IXYS Depletion MOSFETs are no longer for sale.
I do currently try to keep around SemiSouth R100A's and R085's. If I don't have any available. Consider this a sign up sheet to get some.
Current stock is 1/15/2012
R100A matched pair - 50.00 plus 5.00 shipping. Registered mail is 15.00 extra, and recommended if ordering in quantity.
R100A matched quad - 110.00 plus shipping.
R085 matched pair 60.00 plus shipping
Original messages has been deprecated.
The IXYS Depletion MOSFETs are no longer for sale.
I do currently try to keep around SemiSouth R100A's and R085's. If I don't have any available. Consider this a sign up sheet to get some.
Current stock is 1/15/2012
R100A matched pair - 50.00 plus 5.00 shipping. Registered mail is 15.00 extra, and recommended if ordering in quantity.
R100A matched quad - 110.00 plus shipping.
R085 matched pair 60.00 plus shipping
Last edited:
I'm in!
but the browser says the link in the body of your post is not a valid google spreadsheet.... but the one in your sig line is ok.
Fran
but the browser says the link in the body of your post is not a valid google spreadsheet.... but the one in your sig line is ok.
Fran
Last edited:
https://spreadsheets.google.com/ccc?key=0An3nVM43ZbQndHVfQWxMQzNFNmFlYndDWmREa1NtaUE&hl=en
TB, I used the link from the original GB thread to add 2 pairs of the SemiSouth FETs. You may have pasted the link name as identified by the forum software rather then the link location. A right click on a valid link allows you to copy the location. The forum display may truncate the link location to generate the link name. The name and location are not the same when the length for the location exceeds a certain number of characters. L
TB, I used the link from the original GB thread to add 2 pairs of the SemiSouth FETs. You may have pasted the link name as identified by the forum software rather then the link location. A right click on a valid link allows you to copy the location. The forum display may truncate the link location to generate the link name. The name and location are not the same when the length for the location exceeds a certain number of characters. L
I do have the sign up link figured out in my signature. A thanks to Udailey on that one, who helps with my technical support occasionally.
Sorry Tea-Bag, but could you briefly (in a word? 😛) explain the difference between the two MOSFETs? I can't find a datasheet for the IXTH6N50D2.
Probably not too well. Nelson discusses the difference a bit in the two in the de-lite article.
The 6N can run without an input capacitor, Can take a little less juice and has less distortion in the audio band compared to the 50D. The design as nelson has it with the 6N probably is more fussy with the pre-amp.
I listen to the 50D and like it, with a Erse PolyPro capacitor. I think it sounds much different than the IRFP, National Semi, and Toshiba Mosfets. I have not heard the other, and to modify the circuit between the two does not look too difficult.
I can say a 'really good' 10uf capacitor, is expensive.
The 6N can run without an input capacitor, Can take a little less juice and has less distortion in the audio band compared to the 50D. The design as nelson has it with the 6N probably is more fussy with the pre-amp.
I listen to the 50D and like it, with a Erse PolyPro capacitor. I think it sounds much different than the IRFP, National Semi, and Toshiba Mosfets. I have not heard the other, and to modify the circuit between the two does not look too difficult.
I can say a 'really good' 10uf capacitor, is expensive.
I'm quite confused:
Magura made the semisouth group buy, we still have to wait, now there will be another group buy for semisouth devices???
Shouldn't we put the semisouth devices to magura, because the higher the numbers of devices, the lower our prices????
Regs, Dirk
Magura made the semisouth group buy, we still have to wait, now there will be another group buy for semisouth devices???
Shouldn't we put the semisouth devices to magura, because the higher the numbers of devices, the lower our prices????
Regs, Dirk
dirk - One word: Paypal.
Magura's GB was bank transfer only, and left a number of us out in the cold.
Magura's GB was bank transfer only, and left a number of us out in the cold.
His GB is closed as well.
Just trying to help people get strange output devices at a reasonable cost.
Well reasonable is subjective here with the SiC Jfets 🙂
Just trying to help people get strange output devices at a reasonable cost.
Well reasonable is subjective here with the SiC Jfets 🙂
Current status report, looking for 50 pairs of each about to close GB.
SemiSouth IXTH50 IXTH65
pairs 23 20 29
Looking good I would say. Although those darn 50's come in 30 packs. Guess I will have to figure that out.
SemiSouth IXTH50 IXTH65
pairs 23 20 29
Looking good I would say. Although those darn 50's come in 30 packs. Guess I will have to figure that out.
F2 with SS.
I was inspired by another member to try these on the F2.
Poped it in, needed to pump up the bias. It dropped down about 4v. The sound is different, have not gotten around to analyzing it yet. Listened to my Fostex FF85ks. It seems to be a 'cleaner' sounding F2.
I was inspired by another member to try these on the F2.
Poped it in, needed to pump up the bias. It dropped down about 4v. The sound is different, have not gotten around to analyzing it yet. Listened to my Fostex FF85ks. It seems to be a 'cleaner' sounding F2.
Attachments
Last edited:
power jfet amps
I noted in another thread, possibly too old now, that i had ordered a half dozen Lovoltech power jfets from ebay source for only a few dollars. I have some tiny tube amps in low voltage space charge mode operation, I intend to interface to it. But, can anyone tell me, source of explicit power jfet circuits, rather than circuits which suggest that power jfets could be used? For example something similar to the De Lite amp, but using power jfets? I myself decided to stick to space charge tubes and jfets, no high voltages for this hobbyist😉 Thanks 🙂
I noted in another thread, possibly too old now, that i had ordered a half dozen Lovoltech power jfets from ebay source for only a few dollars. I have some tiny tube amps in low voltage space charge mode operation, I intend to interface to it. But, can anyone tell me, source of explicit power jfet circuits, rather than circuits which suggest that power jfets could be used? For example something similar to the De Lite amp, but using power jfets? I myself decided to stick to space charge tubes and jfets, no high voltages for this hobbyist😉 Thanks 🙂
Zen version 8 on the passdiy.com site is just what you're looking for.
Measures better than the De-Lite too. 🙂
Measures better than the De-Lite too. 🙂
Check out this section of the DeLite article.
If you can substitute a IRFP240, you can use the SemiSouth as well.
http://www.diyaudio.com/forums/diya...-de-lite-amplifier.html?garpg=6#content_start
If you can substitute a IRFP240, you can use the SemiSouth as well.
http://www.diyaudio.com/forums/diya...-de-lite-amplifier.html?garpg=6#content_start
Hi Tea-Bag,
Thanks for your time and your help. I hope i am not not too late for joining the group buy, i did it a couple of minutes ago. Paypal seems just fine !
Dominique
Thanks for your time and your help. I hope i am not not too late for joining the group buy, i did it a couple of minutes ago. Paypal seems just fine !
Dominique
No one is too late yet. We have met the pricing mark for the 65N Depletion Fets. Just need to gain some momentum on the SouthSemi JFets. They are pricey little critters, so I can understand the hesitation. As soon as we get close with the JFET's I will close the group buy with ~ 7-10 days to pay.
Papa did share the F2 Clone changes on that thread.
http://www.diyaudio.com/forums/pass-labs/91168-diy-f2-clone-new-post.html
Here is the message that has just been posted:
***************
The F2's that I have updated with the JFETs need the
following changes:
R6 = 47k
C1 = 10 uF
Z1 removed
The potentiometer must be re-adjusted for minimum
distortion at 4.5 watts (symmetric clipping) and readjusted
after an hour.
The distortion results are typically a reduction from about 1%
at 1 watt to .3% at 1 watt
_____
So I am populating what I can on my PD F2 boards. I will salvage most the existing F2 parts. Getting ready to hear the first 'available' SouthSemi Papa approved design.
Wish I had a bunch of 1000uf Elna Silmic's for the output.
Papa did share the F2 Clone changes on that thread.
http://www.diyaudio.com/forums/pass-labs/91168-diy-f2-clone-new-post.html
Here is the message that has just been posted:
***************
The F2's that I have updated with the JFETs need the
following changes:
R6 = 47k
C1 = 10 uF
Z1 removed
The potentiometer must be re-adjusted for minimum
distortion at 4.5 watts (symmetric clipping) and readjusted
after an hour.
The distortion results are typically a reduction from about 1%
at 1 watt to .3% at 1 watt
_____
So I am populating what I can on my PD F2 boards. I will salvage most the existing F2 parts. Getting ready to hear the first 'available' SouthSemi Papa approved design.
Wish I had a bunch of 1000uf Elna Silmic's for the output.
- Status
- Not open for further replies.