Curious_George Posted August 20, 2022 Share Posted August 20, 2022 As a separate topic for those interested in design or just how those funny looking plate curves mean anything, I have plotted some preliminary info on the 6Y6G/GA/GT plate curves. An additional tube is also posted (Courtesy of Matt from diyaudioprojects.com); 6EM7 with design data to illustrate how much info can be extrapolated from the plate curves. 6Y6GT Load Line.pdf 1 Quote Link to comment Share on other sites More sharing options...
Curious_George Posted August 20, 2022 Author Share Posted August 20, 2022 Here is the link to a variant of the Little Sweetie. Not really a redesign, but a better implementation of the overall design. https://community.klipsch.com/index.php?/topic/159805-the-long-awaited-little-sweetie-mono-sets/page/6/#comment-2559478 1 Quote Link to comment Share on other sites More sharing options...
henry4841 Posted August 27, 2022 Share Posted August 27, 2022 On 8/20/2022 at 10:14 AM, Curious_George said: Here is the link to a variant of the Little Sweetie. Not really a redesign, but a better implementation of the overall design. https://community.klipsch.com/index.php?/topic/159805-the-long-awaited-little-sweetie-mono-sets/page/6/#comment-2559478 I like good, better, best thingee's Quote Link to comment Share on other sites More sharing options...
John N. Lumley Posted April 17, 2023 Share Posted April 17, 2023 Well, thanks guys for the kind words! There is nothing at all wrong with Maynard's "LITTLE SWEETIE" A really splendid design, I might add. Without his inspiration, I would have had nothing to build on. I like to build my way, and he likes to build his way. I'm sure both work and sound very similar. If there's enough interest, I could supply CNC machined Hammond 6X9X2" aluminum mono-block chassis (as used by Maynard) They would be ready to use, without any metal-working, just bolt on the parts. I might at a later date, offer a partial parts kit that has tube sockets, IEC socket, on-off switch, fuse holder, mounting screws, etc. Builders could then choose their favorite resistors, caps, and tubes. I like to drill & tap all the mounting holes #6-32, which makes it very easy to mount all the parts from the outside of the chassis. It's so much easier than holding a heavy transformer in one hand, and then trying to insert a screw and nut with the other hand from underneath. Yeah, I'm a retired tool & diemaker that has my own wood-working, and CNC machine shop on the property. I started building Knight Kits in high school, ca. 1962, and DIY around 2000. A nice forum; fun to read and learn from! Rgds, <JNL> 4 Quote Link to comment Share on other sites More sharing options...
John N. Lumley Posted April 17, 2023 Share Posted April 17, 2023 Ok, front view here. Couldn't post both due to MB limits; <JNL> 2 Quote Link to comment Share on other sites More sharing options...
henry4841 Posted April 17, 2023 Share Posted April 17, 2023 😃 Quote Link to comment Share on other sites More sharing options...
CWelsh Posted April 17, 2023 Share Posted April 17, 2023 Do you have an idea of price for a chassis? Quote Link to comment Share on other sites More sharing options...
tube fanatic Posted April 18, 2023 Share Posted April 18, 2023 17 hours ago, John N. Lumley said: If there's enough interest, I could supply CNC machined Hammond 6X9X2" aluminum mono-block chassis (as used by Maynard Rgds, <JNL> That is a wonderful offer John. I used the 9x7 chassis which allows ample room for maneuvering underneath. One of the biggest deterrents for prospective diy-ers is the chassis prep. I hope you get lots of interest! Maynard Quote Link to comment Share on other sites More sharing options...
John N. Lumley Posted April 18, 2023 Share Posted April 18, 2023 OK, Mouser has 36 of these in stock; with the cheapest UPS-ground shipping, the cost is $41.75 for a pair. https://www.mouser.com/ProductDetail/546-1444-972 Hawk is cheaper, but why buy there, when you can combine shipping of the electronic parts at Mouser, and save on shipping? (one vs. two shipping costs) I can ship a pair of CNC machined enclosures for $17.10, via a USPS flat-rate medium box, in the USA 48 states. So, we are at a total of $58.85. BTW, I have not marked up any the costs! Now, I just need to estimate the CNC machining costs. Perhaps a group-buy of 10 pairs might be a good idea to lower costs? Rgds, <JNL> 1 Quote Link to comment Share on other sites More sharing options...
John N. Lumley Posted April 19, 2023 Share Posted April 19, 2023 Hi again, here's current NOS tube prices at https://vacuumtubesinc.com/ A reliable seller in Orlando, Florida, USA, that I've used for many years. 6SJ7 $7.50 ea. 6Y6GT $3.50 ea. 6W4GT $3.00 ea. Rgds, <JNL> Quote Link to comment Share on other sites More sharing options...
henry4841 Posted April 19, 2023 Share Posted April 19, 2023 Hard to beat the prices of the tubes for the Sweetie. Tube prices have risen dramatically in a relatively short time. Most know the reasons so I will not elaborate further. Quote Link to comment Share on other sites More sharing options...
tube fanatic Posted April 19, 2023 Share Posted April 19, 2023 10 hours ago, John N. Lumley said: Hi again, here's current NOS tube prices at https://vacuumtubesinc.com/ A reliable seller in Orlando, Florida, USA, that I've used for many years. 6SJ7 $7.50 ea. 6Y6GT $3.50 ea. 6W4GT $3.00 ea. Rgds, <JNL> I totally agree that Jim Cross, the owner, is honest and reliable. I have bought all my tubes from him for more years than I can remember. Maynard Quote Link to comment Share on other sites More sharing options...
John N. Lumley Posted April 20, 2023 Share Posted April 20, 2023 On 4/19/2023 at 5:54 AM, henry4841 said: Hard to beat the prices of the tubes for the Sweetie. Tube prices have risen dramatically in a relatively short time. Most know the reasons so I will not elaborate further. Hi Henry, thanks for posting. If you look at current tube prices (NOT NOS), you might find that the old tubes are a bargain! and in most cases, better sounding. YMMV https://www.tubedepot.com/products/sovtek-6sj7 ($49.95) https://www.tubedepot.com/products/genalex-gold-lion-6v6gt-cv-511-power-vacuum-tube ($59.95) https://www.tubedepot.com/products/sovtek-5y3gt-rectifier-vacuum-tube ($35.95) Quote Link to comment Share on other sites More sharing options...
the real Duke Spinner Posted July 31, 2023 Share Posted July 31, 2023 On 4/17/2023 at 3:59 PM, John N. Lumley said: Well, thanks guys for the kind words! There is nothing at all wrong with Maynard's "LITTLE SWEETIE" A really splendid design, I might add. Without his inspiration, I would have had nothing to build on. I like to build my way, and he likes to build his way. I'm sure both work and sound very similar. If there's enough interest, I could supply CNC machined Hammond 6X9X2" aluminum mono-block chassis (as used by Maynard) They would be ready to use, without any metal-working, just bolt on the parts. I might at a later date, offer a partial parts kit that has tube sockets, IEC socket, on-off switch, fuse holder, mounting screws, etc. Builders could then choose their favorite resistors, caps, and tubes. I like to drill & tap all the mounting holes #6-32, which makes it very easy to mount all the parts from the outside of the chassis. It's so much easier than holding a heavy transformer in one hand, and then trying to insert a screw and nut with the other hand from underneath. Yeah, I'm a retired tool & diemaker that has my own wood-working, and CNC machine shop on the property. I started building Knight Kits in high school, ca. 1962, and DIY around 2000. A nice forum; fun to read and learn from! Rgds, <JNL> Allied Radio. , ftw. 😀 Quote Link to comment Share on other sites More sharing options...
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