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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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In Reply to: RE: No, that's not correct posted by PaulF70 on May 24, 2025 at 18:49:35:
"But why run a transmitter triode to get 8W when any 300B will do that?"Because the additional midrange headroom of the larger triode produces sound that is more nuanced and effortless when paired with most speaker systems.
To be clear, the issue of limited bass I mentioned has nothing to do with load lines or inductance (although those parameters can certainly undermine amplifier performance). The more important issue is core flux, with the maximum that is permissible being directly related to core size. Core flux is inversely proportional to frequency, so the flux produced at 50Hz will be twice that produced at 100Hz, all else being equal. This is a critical concern for any full bandwidth amplifier, because it means transformer performance is declining at the same frequencies where most musical material requires more power from the amplifier.
There's a lot of misinformation in this thread on this subject. I would urge anyone who thinks the bass is tight and abundant in their high power SET to make a measurement. OTOH, maybe this is one of those things owners are better off not knowing. :)
Edits: 05/25/25
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Follow Ups
- "...why run a transmitter triode to get 8W...?" - Triode_Kingdom 18:44:01 05/25/25 (28)
- How many room can go down 20Hz - Leo loves music 18:53:55 05/25/25 (27)
- One point - Tre' 11:57:13 05/26/25 (17)
- RE: One point - Leo loves music 12:04:52 05/26/25 (16)
- RE: One point - Triode_Kingdom 12:27:37 05/26/25 (11)
- Are you telling me JBL is a liar? - Leo loves music 12:58:43 05/26/25 (10)
- 10db down at 35Hz. Nothing else needs to be said.nt - Tre' 14:27:58 05/26/25 (9)
- You forgot one thing - 100dB sensitivity! (NT) - Leo loves music 14:51:13 05/26/25 (8)
- So are you now saying you use heavy EQ to get your speakers flat to 35Hz? - Tre' 15:17:40 05/26/25 (7)
- RE: So are you now saying you use heavy EQ to get your speakers flat to 35Hz? - Leo loves music 15:23:25 05/26/25 (6)
- If you're not using EQ then your JBL speakers.... - Tre' 17:35:02 05/26/25 (5)
- Do you really expect a 100dB speaker to go flat down to 20Hz? - Leo loves music 17:49:45 05/26/25 (4)
- Absolutely, Altec A2 _nT. - Cleantimestream 21:27:09 06/03/25 (0)
- No I do not. I thought you did. nt - Tre' 17:52:43 05/26/25 (2)
- So, how low can a 100dB sensitivity speaker go? - Leo loves music 17:57:31 05/26/25 (1)
- OK but I'm not clear what that has to do with your speakers. - Tre' 10:39:38 05/27/25 (0)
- RE: One point - Tre' 12:24:27 05/26/25 (3)
- RE: One point - Leo loves music 12:47:08 05/26/25 (2)
- JBL didn't lie - Tre' 14:43:00 05/26/25 (1)
- In later years JBL chose longer excursion for power, harder to drive than most people think. Efficiency.... - Cleantimestream 08:38:40 06/05/25 (0)
- RE: How many room can go down 20Hz - Triode_Kingdom 21:00:58 05/25/25 (8)
- The trick is to break up standing waves. Then its easy. - Ralph 09:43:29 06/03/25 (0)
- RE: How many room can go down 20Hz - Leo loves music 03:07:38 05/26/25 (6)
- RE: How many room can go down 20Hz - Triode_Kingdom 12:37:16 05/26/25 (2)
- Ah yes, the room trumps any speaker, any preamp or, any Amplifier _nT - Cleantimestream 08:42:55 06/05/25 (0)
- SPL and frequency extension are two different things (NT) - Leo loves music 12:56:05 05/26/25 (0)
- RE: How many room can go down 20Hz - Paul Joppa 07:50:21 05/26/25 (2)
- And on that note - I'm out! - Triode_Kingdom 14:35:46 05/26/25 (0)
- These are interesting questions. - Leo loves music 08:25:55 05/26/25 (0)
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