The Amp Garage

This may sound stupid, but I will post it anyway... I wondering if the presence is wired different than described in the schematic. If you look at the + sign on the presence cap on the picture, it points towards ground.. Could it be that the cap is actually in series with the 390ohm, and the presenc...

A lot of us use this: http://www.duncanamps.com/psud2/index.html Very cool and free. I ran your rectifier simulation and was only one volt off your B+ so the transformer is right on spec. The trick is getting the right load resistance in the model. Figuring 35ma per tube (at idle) plus 3ma for each...

I`m missing 10V at both V1 and V2. Assume that I have to lower the 22K resistor, but to what value? PI voltage seems correct. Different tubes can very by 10V or so, but I would drop it to an 18K. TM Thanks! Tested with two different sets of tubes las night. No difference. I will first try the 230v ...

According to amp wizard`s site, the voltage can drop to 1.2x ac input voltage.
Tried also a new card with 2 diodes and it did not help at all.

I`m missing 10V at both V1 and V2. Assume that I have to lower the 22K resistor, but to what value?
PI voltage seems correct.

First off, it's not really all that low IMHO. My 124 B+1 is 440V for mains of 122VAC through a Hammond Fender Twin replacement PT. What you're seeing may be 'normal'. All transformers exhibit a voltage drop between standby and on because of the increase in loading. The amount of drop will depend on...

Hi Thanks to all of you, I`m about to finish my 124 build. :-) I will post all the pictures as soon I am having proper voltages. However, there an issue with a significant voltage drop from the rectifier. Measurements: Standby: Uac=2x335V Udc=475V (from rectifier) Uripple=0V ON: Uac=2x330V Udc=425V ...

http://www.spotify.com/blog/archives/20 ... rix-video/

Finally live at Glastonbury!!

-Almost started to cry...

Nice

Have anyone tested the Jensen Jet Tornado?
This speaker was released early 2009 (?) and should be an improvement of the neo series.

What about the Jet Tornado..?
Seem similar to the EVM12-L, looking (only) at the frequency responce..
I`m attempted to try this due to some problems with my back.

I have been lurking for ages, too scared to post, I am just a normal guy trying to learn my hobby, You guys are generous with info and extremely knowledgeable, but who did what and when is just 1st grade stuff I am a member of a ford mustang owners forum here in Australia, check this thread out, an...

ElectronAvalanche wrote:Hi gang,

Merry Christmas to yall and a happy 2010!

Found these pics somewhere on my computer. Dumble #70. Enjoy!

Electron

If you found those somewhere inside..
-Send your Hard Drive to me ASAP!!

Happy New Year from Kongsberg, Norway !!
(white Christmas, mostly below -20degC)

dartanion wrote:I want to see that when it comes out!!

Looks funny as hell.

Companies in Finland usually sends an engineer for the commissioning and the first trials...

My neighbors from Finland has just started the hunting season...

http://www.youtube.com/watch?v=8JIz7I5yzwQ

I can certainly see HAD pursuing any purveyors of fake Dumble amps, as I would for any business owner doing the same. What's totally wacky to me is his business model--even if you did have the cash, how the heck is a prospective customer s'posed to reach the dude? Send a message with a Ouija Board?...