DIY Sony VFET Builders thread

[ItsAllInMyHead]

Most likely the originals included with the kit...

 

[codyt]

^ correct

 

[MEPER]

Ok....so Mundorf is not "kit original"?

Rubycon may have another sound when they explode.....

 

[MEPER]

I have some Jensen but they are with screw terminals.
Jensen factory closed last year......

I will use Rubycon.....

 

[codyt]

Haha, more of booom than pow

 

[codyt]

For a pictorial... Since I happen to have one of each.

Thanks again Codyt, Nelson and all others for pointing this out.

View attachment 944054

This picture is perfect, btw! Definitely suggest everyone checks their boards against this pic.

 

[billyk]

Oh man, bet that got the heart pumping.
I just checked mine, I have the correct markings on mine. And drat, I missed the postman with my package today.

 

[rhthatcher]

Haha, more of booom than pow

That is the sound of the Audio Gods smiting Cody for disobeying papa by using Mundorfs.

 

[codyt]

Haha, you’re right! I knew I was stepping into the dark side when I soldered those in

 

[codyt]

Totally tangental, but what are the bookshelf speakers in your pic?

They are Triangle Borea 03’s. Nothing fancy, but They sound good. 89-90db efficient and 8 ohms - best mate I have for the vfet amp.

 

[Zen Mod]

Sorry about this........

Blame ZM, as always ..........

 

[Nelson Pass]

Goes without saying.

 

[PKI]

They are Triangle Borea 03’s. Nothing fancy, but They sound good. 89-90db efficient and 8 ohms - best mate I have for the vfet amp.

This may sound like an attack on your speakers, please believe me it is not. I really doubt they are that efficient, most likely honest 86-87db if they play anywhere close to claimed ~50 f3. And this is not bad at all. With minimum Z of around 4ohm this is wonderful. It should very reassuring that you like the sound especially for people who intimidated by Pa’s and of course ZM’s love fir huuge drivers . Cheers enjoy the music! Hope I will be joining you all soon

 

[wdecho]

Where do you find 6L6's builders thread?

 

[codyt]

So, I got everything cleaned up, caps back in (reversed), amp successfully powered on, and voltages are holding well. Heatsinks have settled in at around 48C. I've not had a chance to give it a good listen yet, but what I can say so far is... SPOOKY. I'm impressed to say the least

I've attached a few measurements. Distortion seems inline with Nelson's data from the documentation. This amp is quiet! Also notice the nicely matched parts

Thanks again for the support and help along the way!

 

[codyt]

Where do you find 6L6's builders thread?

He's pretty busy with his day job and hasn't the the chance to complete. If you bug him, he may share a few of his pics though

 

[Mark Johnson]

If you bug him he may tell you to perform an anatomically impossible act. Be polite and respectful if you're asking for a favor.

 

[codyt]

Yes, poor choice of words on my part

 

[rhthatcher]

Here are some pix of my board assembly. I measure and mark the resistors, then install and check them off. Then the caps, etc. I had a few extra resistors. Is that like the IKEA kit with a few extra fasteners? I hope to do some wiring after dinner.

Great tip to label the bags before dumping them out! Now I know what screws and washers go where.

 

[RafaPolit]

Codyt, thanks so much for the heads up, for alerting the community and for the good attitude about it! It must have been a bummer and an upsetting moment. Cleaning it, erasing the VFETs markings, having to replace your nice caps. You are a true champ! You may also have just saved the others that get those PCBs.

Perhaps if you had had a mismatched pair, it would have raised a flag to double check, but you actually got BOTH PCBs wrong, so I would have failed miserably myself at that check for sure!

Best,
Rafa.