I'm building a Hoffman non-Tremolo Princeton Reverb for a friend to use as a harp amp. Today I finished wiring it, and checked all the voltages - they were all spot on. Good, no 220k instead of 220R resistors or whatever. Everything looked fine.

Removed the dummy load, plugged in the speaker. Turned it on. Nothing. Shit. Signal is being sent to ground somewhere. There wasn't even any hum or hiss. None.

Plugged in a guitar (Tele, of course) anyway, just to be sure.

Perfect. Everything works the way it is supposed to. Nice loud Fender sound. Reverb, with dwell control, can be precisely regulated from just a whisper to surf city.

NO hum, no hiss. I don't know how this happened. It's just ... perfect.

I guess everyone gets lucky once in a while. Maybe I should keep this.



steven

Well, now you're ready for some Marshalls, Steven 

Why? Did hell freeze over? Is Trump president? Is my body dead??  :bier:

hopefully none of the above...
But we should all start building a hell of a lot of marshalls - if this of any help against Donald Dumb.
LöD

Zitat von: Puddnhaid Husting am Jun 07, 2016, 06:56NO hum, no hiss. I don't know how this happened. It's just ... perfect.

Oh no! A Fender Reverb lacking hum - that's bad. Looks like you got to start from scratch 
Nice job! Can we have a photo for reference 

Hey Steven,

impressive, really, despite of carbon composite resistors. Would you mind to post a picture of the inside? Would be nice!

:topjob:

I nearly allways have trouble with faint noise and hum in a way or another.

Lieben Gruß,

Nigel

I've done an entire album on FB for the guy who will be getting it. When I add the last few photos and a short video, I'll post  a link here.

I don't use CC resistors. Signal path is mostly Dale RN65 with a few MF and CF. Caps are 150s and Xicons, selected on the rigorous basis of "what do I have."

I tried a slightly different technique this time. I installed the turret board and made all of the off-board connections first, then populated the board. I also ran all connections straight and short, and stopped trying to bend them into something beautiful, which no matter how hard I tried it just didn't want to look like a hiwatt. Since the leads for the tone stack and the reverb are long I was expecting some bad hum. Some times, the ice gods smile on us.

steven

Here's a link to the photos. A video is uploading, I'll add that when it's done.

https://www.facebook.com/media/set/?set=a.1156194121109605.1073741862.106400686088959&type=1&l=5226b00cd0

This may work for the video:

https://www.facebook.com/106400686088959/videos/1169036959825321/

While you're at it, poke around and see what my brother does. His two newest are a bass for my son ("The Timinator") and a seamist green Tele with gold foil pickups.

steven

Boah, was für eine fantastische Arbeit! :danke:

Klingen tut er auch nicht schlecht.


Lieben Gruß

Nigel

Alleroberste Liga!!

:topjob:

Chapeau! 

:danke:

Nice carpet 

Tidy, clean and simply awesome. Congrats!

Zitat von: Duesentrieb am Jun 09, 2016, 07:07
Nice carpet 

Tidy, clean and simply awesome. Congrats!

Thanks. It's my daughter's bedroom. Was. Now it's my toy room.

Thanks for all the kind words. It's funny how different people see different things. I see all the things I could have done better.

Though others see them but are too polite to mention them. THIS WILL CHANGE IN THE TRUMP WORLD!   :police: :police: :police: :police:

steven

Very nice build! And beautiful sound!
LöD

very clean and nice build!  :topjob:

Hello Steven,
absolutely no hum - i am scared, too....   :topjob:
You have successfully completed the final stage of AMP building.
Now you have the golden master hands and the price of your AMPs doubles up! 
Cheers
Jürgen