Giveaway - SJEP120R100 pair

[Samuel Jayaraj]

Tracking number received. Shipping Address is correct. Thank you.

 

[codyt]

Shipped!

The parts have arrived, have been packaged, and I’m en route to the post office now. All eligible persons who’ve paid for shipping (everyone) have a package going out today. All parts have been spoken for.

Enjoy! And thanks again to Nelson for your generosity!

 

[RainfallSky]

Beautiful!
Not enough Thanks to you Cody and Nelson.

 

[steve jones]

Many thanks Cody!
And Nelson, you’re my Sugar Papa.

 

[peppennino]

The parts have arrived, have been packaged, and I’m en route to the post office now. All eligible persons who’ve paid for shipping (everyone) have a package going out today. All parts have been spoken for.

Enjoy! And thanks again to Nelson for your generosity!

MERAVIGLIA!!
​

 

[RainfallSky]

T1026 and P0939 codes.

 

[codyt]

I tried to match lot codes when possible.

 

[codyt]

Ok, officially out of my hands (and into to USPS)

 

[maximax77]

T1026 and P0939 codes.

What do these codes mean?

 

[codyt]

They’re Lot codes he saw on the devices.

 

[BRN]

codyt and Mr. Pass,

Thank you very much. I have everything lined up to build a F2J.

 

[codyt]

codyt and Mr. Pass,

Thank you very much. I have everything lined up to build a F2J.

This is the first time I've seen an F2J mentioned – that'll be fantastic!

 

[nicoch58]

Thanks again

 

[herrstagl]

Hello,

I was too late for the game but still wanted to say thanks for all the efforts you are taking. Thank you Cody and Nelson.

Best, Tom

 

[Danger Mouse]

Me too.
Thank you very much Nelson & Codyt.
Never thought i can have so much luck.
Would be very interesting to upgrade my AlephJ ->AlephjJ
F2J seems also very intersting. But i have no speakers for such an amp. And for Headphones it would be overkill.

 

[BRN]

I have the speakers, not sure about the preamp. I’m using a VTA SP14 tube preamp and it usually likes to see a higher impedance. It has a 1uF coupling cap on one of the output, so I’m hoping that will be enough and I don’t have any noticeable low end roll off.

 

[Zen Mod]

@ BRN

you're good , F2J is having Rin of 47K

 

[indra1]

Probably a second cup of coffee is a good idea. 🙂

 

[BRN]

ZM,

Thanks.

I was looking at the manual and it stated that it was 10k. But looking at the diagram I see it is 47k.

 

[Zen Mod]

Probably a second cup of coffee is a good idea. 🙂

yes, I admit, not enough coffee these days 🙂

though, I've read this (saved in my old trusty personal can), and looked at enclosed schm:

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 .25%.

post #328

DIY F2 clone - Page 17 - diyAudio