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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: General speaker design characteristics for a 2A3 amp posted by saki70 on April 11, 2017 at 11:59:39:
Most of the comments so far have been fairly detailed. So I will attempt to take a broader (and more technical) tack.
First, a SE 2A3 amp will give you no more than 4 watts (and that with a tailwind). That would normally call for 96dB/watt efficiency, which is fairly rare - your choice of speakers is quite limited. Without going into excruciating detail, this is what I call satisfactory to most audiophiles, most of the time. Many will be satisfied with 1/4 the efficiency (90dB/watt efficiency), especially if you don't need full symphonic or big band loudness. Since efficiency and bass extension both require large cabinet volumes, you probably need big cabinets unless you are listening only to sopranos with acoustic guitars. :^)
Second, an SET amp usually has no feedback and thus a damping factor in the range of 2-4. Few speaker systems are designed for that; most assume a high damping factor in the range of 10 to infinity. Therefor most SETs will produce more or less uneven deep bass, and many speakers will also have uneven response in the crossover region. This is an interesting technical point, but the marketplace offers little or no relevant data - the best approach in my mind is to listen to them yourself, preferably at home with the amp you are interested in, or at least a similar one.
Everything I have said above is of course grossly simplified. I expect there will be many expansions/corrections/etc, and that's fine with me.
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Follow Ups
- RE: General speaker design characteristics for a 2A3 amp - Paul Joppa 19:39:37 04/12/17 (12)
- Paul, FWIW, I think you hit the nail(s) on the head(s) - mhardy6647 05:28:27 04/13/17 (0)
- RE: General speaker design characteristics for a 2A3 amp - tube wrangler 21:45:41 04/12/17 (10)
- RE: General speaker design characteristics for a 2A3 amp - Hornlover 09:02:25 04/14/17 (1)
- +1 (nt) - Tre' 08:42:52 04/15/17 (0)
- Low inertia of the moving masses, so as to get closer to the mechanical impedance of air, is what matters! - Timbo in Oz 18:52:55 04/13/17 (7)
- RE: Low inertia of the moving masses, so as to get closer to the mechanical impedance of air, is what matters! - tube wrangler 07:50:34 04/14/17 (2)
- RE: Low inertia of the moving masses, so as to get closer to the mechanical impedance of air, is what matters! - Don Reid 10:20:46 04/14/17 (1)
- RE: Low inertia of the moving masses, so as to get closer to the mechanical impedance of air, is what matters! - tube wrangler 19:12:46 04/14/17 (0)
- Having been a chorister under Stephen Cleobury - jusbe 04:21:38 04/14/17 (3)
- we actually get characteristic timbre from attacks and decays alone. This is old science, and predates stereo - Timbo in Oz 14:52:31 04/14/17 (2)
- RE: we actually get characteristic timbre from attacks and decays alone. This is old science, and predates stereo - used-hifi 15:26:14 04/14/17 (1)
- Yes, I am aware of that 'problem' FREDs are very low distortion. - Timbo in Oz 15:55:22 04/14/17 (0)
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