Vintage Amp Repair closed?

[Mikerodrig27]

Can you use a matched pair of 2sk170's N JFETs in place of the 2N5566?

 

[Carlitos1969]

VintageAmp if you can find some 2N5566s I would need two pairs.
Thank you very much.

 

[Zen Mod]

Can you use a matched pair of 2sk170's N JFETs in place of the 2N5566?

certainly yes, taking care of differences - Idss and max Uds

if LTP - biased with CCS (either active or resistor), difference in Idss is no issue



increased xconductance leading to increased OLG

anyhow, that's where you can try stash of 2SK170GR Toshibas you have

though, there you can apply all 2SK246Y you have ...... almost 100% drop-in replacement regarding Idss, while xconductance higher enough than you don't need to worry about amp behavior

 

[Mikerodrig27]

Very cool. Thanks! The GR's are cheaper than the BL's too. It looks like the gate lead would have to be bent.

 

[Zen Mod]

tight heatshrink on mid pin, do what you want

 

[Carlitos1969]

I currently have a order out for quote, as you know 2N5566 are now hard to find.

Can I write to this address
vintageamp@surewest.net.?
Thank you.

 

[gary s]

That is what Jon wrote in post #12 for his current email address.

 

[VintageAmp]

Yes that is correct . I should have some soon.

 

[thimios]

LSK489 instead of 2N5566?

 

[VintageAmp]

I have 2N5566 Using the SK fets requires matching 2 from many and the pin out is different, so a dancing cowboy lead arrangement must be done to use these.

 

[Jahuntle]

Hello folks, I am still here working hard to keep old equipment up and running. I have had quite the drama with keeping my .net web site, so recently went to onbizmap.com and facebook. Visit that if you would and help it get moving. I get many scam calls, please leave a good message.

Hi Jon,
Is your business contact info available? I own a forte model 3 and would like to inquire regarding upgrades.

Thanks,
James

 

[VintageAmp]

Hi James, I can be found at www.vintageamprepair.net

 

[Nelson Pass]

Allow me to add that I have never heard a complaint from any of Jon's customers.

🙂

 

[Toys4Boys]

@VintageAmp the link in post 32 takes me to a Google Safe Browsing page, found what looks like the same URL by googling vintage amp repair and that link works.