"Play with" in this case means refurbish by replacing any out of spec parts, then possibly upgrade or modify. I've never tried any of the minimalist SE amps...
... Good approach. ... There's a lot of hoopla out there about single-ended circuits. Some of them actually sound pleasant... but beware that *different*...
Hi Ben, Thanks for your comments. Yes, I'm not looking for something that's going to be super accurate. I'm expecting a "euphonic" sound. And I probably would...
Hi Eli, I can suggest a little (1.5W) amp that appeared in italy by a great young guy: Luca Chiomenti. It was named "Lo Scherzo" (joke) and is great for the...
I had to call it the cover "photo" as it sure as hell ain't no cover "girl." CAPTION: Say, I got me a cat, does y'all have any plate-grid cap insulated covers...
A swap meet for my antique radio club. See the villain in the gray shirt? See the sharp elbows? Those 6SN7's are mine. My precious triodes! Back off, buster....
Hello Eli, If you like to "shop", then eBay is [with all due caveats] as good a source as any to find vintage gear. There are often Heathkit, Eico, Knight,...
Hi Larry, Thanks for the information and the book references. I think I've discovered a couple of "cheapie" models to shop for. I'll be putting in some bids on...
Hi Fabio, Those amps look interesting. But I think for now I want to keep the price even lower. Eli ... great ... and ... really ... than ... seems ... real ...
Hi Eli, If you want to try single ended tubes at lowest cost you can start where I did over 45 years ago. Many models of "All American 5" AM radios had jacks...
Hey Ray, don't forget to tell him that those "5 tube radios" also omitted a power transformer (to save cost) so often the chassis "ground" wasn't and if one...
Hi Ray, Thanks for the suggestion. I may check into that. At the moment, I'm looking at power amps out of consoles. There seem to be quite a few around. I like...
I just refurbished one of those for the friend who does my audio woodwork. It sounds pretty darn good. But I do believe they go for several hundred dollars. 8...
Hi Jim, Larry & Eli, I built an Eico ST-70K in 1966. Yes, It was a fantastic piece but pretty far afield fro Eli's wish for a simple SE unit. It would easily...
Howdy all, glad to be here! Got a couple of questions regarding John Risch's recommendations & "his" filter circuits, tweaks, .... Also wondering about the...
I have a lot of experience with AC filters and surge suppressors. You are right to ask these questions. 1) There aren't many low pass filter circuit...
Thanks for posting such an informative reply! 1) John Risch's Tweaks Index <http://www.geocities.com/jonrisch/index2.htm> 2) John Risch's Surge Suppressor &...
After looking at the circuit diagrams, your right. There is nothing special there. You can get essentially the same circuit with enhancements from many...
I have found what in my experience is the most successful in-home solution to AC line noise. Equi-Tech balanced line technology was developed for studio use to...
I would second that recommendation. Also keep in mind that equipment made for operation on 110 or 220 volts can be set for 220 operation and plugged into a 220...
I've been accumulating a fair amount of tube equipment lately and noticing how hot some of it runs. After doing a little reading on the web I've become more...
I've just found this link: http://www.transcendentsound.com/adjusting_transformer_voltage_wi.htm there is an idea how to connect a standard 120-6.3V...
The more "standard" way should be an autotransformer: it costs far less than a variac and with a couple of taps at 5-10V should allow to adjust the voltage....
Hi Eli, Go to this link for one way to do it. http://www.geofex.com/Article_Folders/vintvolt/vintvolt.htm I did this method a few months ago when replacing bad...
Hi all, to be frank, I can't understand all this indignation on Jon Risch recipes. Of course, paralleling caps and putting L in series are common practices,...
Gang; This is from several 20-plus year veteran of broadcasting.... the info was addressing someone who wanted to power up an outbuilding behind the house to...
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