The Amp Garage

The first plot sort of indicates a 90dB max signal to noise floor capability? Can the x and y axis be set up for typical division sizes, or do you have to rely on cursor settings? Can harmonic levels also be displayed in % of fundamental? Have they updated firmware/capabilities over the years? With...

The first image is a screen capture direct to a usb stick which you can plug into the front of the scope. The second, which doesnt look as nice was taken with a handheld camera. Note that Keysight has different versions of this scope. Make sure you get the one with the internal function generator ot...

A few years ago I researched all of the lower cost scopes. I settled on a Keysight DSOX1102G as it seems to produce acceptable FFT plots while staying within my budget. It has a built in function generator, and also generates Bode frequency/phase plots. Perfect for quickly testing audio devices. Unf...

The 6L6WGBs are North American made and they are more commonly known as 5881s. They are almost identical to the ones made by Tung-Sol, and they are excellent rugged tubes. I have a bunch of these that I pulled out of an old Canadian military flight simulator, circa 1950s and they look the same as yo...

Wow, that was a lightning fast reply. Thanks for the info. I'm not going to use the PPIMV initially, but the rest of my layout will look similar to yours. I am going to put the fuse up front though. As well, I will rewire the ground circuitry with two star ground points.

Chappy

I just picked up one of these chassis. It hums a lot so I think it is going to need an electrolytic recap job first. I'm going to do the Ghia conversion. Premiumplus, M Fowler, You guys did a nice job converting your amps. Before I start drilling holes, did you guys get any hum issues with mounting ...

Some of those pedals you have might be worth checking into. You could almost buy yourself a small amp kit with the money you'd get from the DM-2 alone. Chappy Good to know. They are worth checking on. A DM-2 sold for over $400 and mine is mint. Wonder why the older effects are worth so much? Everyb...

Some of those pedals you have might be worth checking into. You could almost buy yourself a small amp kit with the money you'd get from the DM-2 alone.

Chappy

How about a photoresistor (light dependent resistor) controlled by a low frequency oscillator driving a light bulb. IIRC the Univibe guitar effect pedal (Jimi Hendrix, Robin Trower) used these in the phasing part of the circuit. Seems like the one in the link below has a high enough voltage rating t...

It's too bad he is having issues. I really liked his site when I first saw it 4 or 5 years ago. It looked like he had a real good thing going. IIRC he was quite active in the 18Watt community and had a good following there at the time.

Chappy

Has anyone heard from Moss??? Thank you for reviving this thread. I am seriously thinking about an ODS build right now and I was going to buy a kit from Brownote to save me the hassle of scrounging up all of the parts. You just saved me a bunch of cash and/or heartache. Beer is on me if we ever cro...

Even at full price this book is a steal! Im ordering the ebook on designing power supplies as well Martin. The discount code applies too. Good deal on both books. All together it came to just under $44 bucks. I was actually ready to pay full price tonight but ran into the discount code on this thre...

Mine showed up today. Much easier on the brain than my series of books from Richard Kuehnel.

Chappy

Code still works. I pulled the trigger too! Late Xmas present.

Chappy

Yea,Kinda stinks,They look real cool!Tom,Mark was saying I might be able to put the Power Tranny in something.It would be nice to be able to use it in a rocket or 18 watt. RCA 105771 Pim:117 v. 60 cy. Plate 292-0-292 V. 72 Ma Fil #1= 5 v. 2 amp Fil #2 = 6.35 2.75 amp What do you think? Mikey Sounds...