http://home-4.worldonline.nl/~t708955/triode.htm
Check out this page. Lots of info and links. Some links are dead ends but lots of good ones.
Check out this page. Lots of info and links. Some links are dead ends but lots of good ones.
DIY 300b SET monoblock
Hello,
My father is an experienced amatuer radio operator who has a large, self restored radio collection of both solid state and tube. In addition he is an electrical engineer of 40+years.
He has offered to build me a tube amp and preamp if I can do most of the research for parts and schematics.
I am wondering if anyone has an experience in this and can suggest a very good set of plans that sound great. I believe that the plans can either be a simple design that a beginer could handle or something for someone who has ALOT of experience, depending on which final product is better. Preferably, 300b would be good, but other tube types are acceptable.
The same goes for a preamp.
Thanks_
My father is an experienced amatuer radio operator who has a large, self restored radio collection of both solid state and tube. In addition he is an electrical engineer of 40+years.
He has offered to build me a tube amp and preamp if I can do most of the research for parts and schematics.
I am wondering if anyone has an experience in this and can suggest a very good set of plans that sound great. I believe that the plans can either be a simple design that a beginer could handle or something for someone who has ALOT of experience, depending on which final product is better. Preferably, 300b would be good, but other tube types are acceptable.
The same goes for a preamp.
Thanks_
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- 12 posts total
Derek Walton's DIY 300B SET amp mk1 is one of the most popular and respected freely available designs on the web. He provides all the info anyone would ever need - schematic, parts list, chasis layout drawings, and step-by-stp instructions with photos. It provides excellent performance using non-boutique, affordable parts. And there is plenty of room for future upgrades as need be. |
Jamem6, My only major suggestion forthe Walton amp is that you start out with much better output transformers and chokes, they will have the biggest effect on sound and will provide a solid foundation for future upgrades to be revealed. Magnequest makes fantastic X-formers. Their TFA-204 output tramsformers (3K:16,8,4 ohms, 8 watts, 60 mA) - $240 pair and BCM-19 filter chokes (10H, 200 mA, 109 ohms DCR) - $150 pair are perfectly designed for the job. You can buy them from Bottlehead (2/3 down page) Of course, this adds significantly to the cost of the project at which point it might be worth it to consider a kit which comes with everything you need for a 1st rate set of amps. At the top of my list of kits would be the Diy HiFi Supply Lady Day amps. About a 30-40% jump on price to the $1,200-1,500 range, but solid design with excellent parts and literally hundreds of already built kits. Diy HiFi has a builder's forum on Audio Asylum that is highly active for advice and ideas. Check out the forum and post a few questions. More importantly, the Lady Day is designed to be an experimenter's paradise - the output transformer comes with multiple taps from 2k to 8k allowing the amp to easily be modified to run up to 8 different output tubes (10Y/205D/45/50/PX4/PX25/2A3/300B) and a myriad of input/driver tubes. You can try several classic circuit designs like WE91, MU, and SRPP. The advantage of a kit is that: 1) you don't have to fiddle with finding, drilling, and modifying a chasis - BIG hassle, 2) no ordering or guessing on parts from 10 different sources, all w/ minimum order requirements 3) complete building instructions with photos and a support forum with lots of other beginner and expert builders 4) a tested and proven upgrade path for endless improvement. no flying blind. 5) Built-in resale value if you ever decide to move on to another amp. 6) Ultimate versitility |
- 12 posts total