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In Reply to: SET posted by cruisaire on April 10, 2005 at 12:44:56:
Hi Confused,If I am reading your post right, you would like to try single ended, class A on a tight budget, and you would like to build from 'scratch'.
If so, consider checking out the Bonavolta and Angela websites for single ended, class a pentodes and triode-wired pentodes. I have tube PP, SE Pentode, SE triode-wired Pentode and SEdhT (single ended, directly heated triode). The SE Pentode (with a little negative feedback) provides by far the biggest sound quality return for the money. And yes, it has that class A sound; smooth, remarkably detailed, clean, great micro-dynamics and surprising macro-dynamics. As a bonus, the cost of the output tubes is far below that for the simple (low cost) SET circuits. Just compare the cost of a new or NOS 2A3 to a 6BQ5 or EL34/6CA7.
If you simply must have a SET, then I would recommend the JE Labs most recent revision (on the Angela website). Really, on close inspection they are all pretty similar. I think that you could build most any of them and be pleased with the result. This is not likely to be your last amplifier. Choosing any of these will not be a mistake.
If you are on a tight budget and will have to live with this choice for a few years, then for the same low budget, you will get more sound quality by saving money on the output tubes (using pentodes instead of triodes) and spending the saved money on better output transformers and passive parts (resistors and caps). Of the tube amps I have, I like the SET the best, but in the cost range of a SE pentode, I think that the SE Pentode amp would sound better than a SET for the same cost.
By the way, what speakers are you thinking of using?
Feel free to ask follow-up questions. This is, among other things, a place to learn and share.
Regards,
Bob
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Topic - SET - cruisaire 12:44:56 04/10/05 ( 42)
- Re: SET - cruisaire 13:53:11 04/18/05 ( 1)
- it can be done... - Sector-7G 17:11:00 04/19/05 ( 0)
Re: SET or PP?...what a question. - Dave-A 12:23:03 04/17/05 ( 0)
Re: SET - berlin 05:50:24 04/15/05 ( 1)
- SET - Sector-7G 07:53:27 04/16/05 ( 0)
How about the Angela 45? - mhardy6647 12:49:53 04/13/05 ( 0)
heh-heh-heh... - Sector-7G 18:12:50 04/12/05 ( 20)
- Re: heh-heh-heh... - Snake Anthony 19:22:57 04/18/05 ( 0)
Don't think so... - Triode_Kingdom 20:43:08 04/13/05 ( 18)
- Re: Don't think so... - Tre' 23:27:04 04/13/05 ( 17)
- Re: Don't think so... - Triode_Kingdom 12:42:00 04/15/05 ( 16)
- Apples and Oranges - Tre' 19:14:13 04/15/05 ( 15)
- Re: Apples and Oranges - Triode_Kingdom 20:54:34 04/16/05 ( 12)
- Apples and Oranges - Sector-7G 03:59:43 04/17/05 ( 11)
- Dougie............... - Snake Anthony 07:08:10 04/18/05 ( 3)
- tell you what.... - Sector-7G 13:11:25 04/18/05 ( 2)
- Re: tell you what.... - Snake Anthony 15:26:32 04/18/05 ( 1)
- you misunderstand then.... - Sector-7G 16:58:52 04/18/05 ( 0)
- Re: What's the point? - Dave-A 12:20:36 04/17/05 ( 5)
- All four perhaps? - Sector-7G 13:15:45 04/18/05 ( 4)
- Re: All four perhaps?...or not. - Dave-A 16:30:27 04/19/05 ( 3)
- this is *NOT* the cable forum... - Sector-7G 17:16:52 04/19/05 ( 2)
- Buh bye - Triode_Kingdom 08:28:07 04/17/05 ( 0)
- Should have read "A Class A push pull output stage" nt - Tre' 19:37:02 04/15/05 ( 1)
- yep.... - Sector-7G 07:50:28 04/16/05 ( 0)
Consider SE Pentode - AstroSonic 04/12/05 12:33:41 04/12/05 ( 7)
- This is a timely thread! - harryz 04:42:29 04/21/05 ( 0)
Re: Consider SE Pentode - BTW 20:11:19 04/12/05 ( 5)
- Re: Consider SE Pentode - AstroSonic 21:00:49 04/12/05 ( 4)
- Re: Consider SE Pentode - BTW 04:17:03 04/13/05 ( 3)
- Re: Consider SE Pentode - sarlau 12:00:51 04/18/05 ( 2)
- Re: Consider SE Pentode - AstroSonic 17:01:39 04/18/05 ( 1)
- Re: Consider SE Pentode - sarlau 20:04:24 04/18/05 ( 0)
One of the most simple SET design's I have found. - LI150 12:07:26 04/12/05 ( 0)
Here's a link - Triode_Kingdom 18:49:39 04/10/05 ( 0)
Re: SET - elektron 16:39:31 04/10/05 ( 1)
- Re: SET - cruisaire 17:56:24 04/10/05 ( 0)
Re: SET - korneluk 16:24:48 04/10/05 ( 2)
- Re: SET - cruisaire 18:00:02 04/10/05 ( 1)
- This is Simple and Easy - malanga454 06:56:06 04/12/05 ( 0)