In Reply to: Compare the Stax F-81s to K-horns posted by plantsman on July 21, 2012 at 03:39:34:
all were down in the 70dB range for one watt. The Stax was 73dB for one watt in and the original Large Apogee was around 76 to 78dB efficiency. The AHL was down to below 71dB. It actually clipped 500 watt monoblocks during a demo without even being loud.
As a side note. Only two companies currently manufacture plasma tweeters, Lansche and Acapella Audio Arts.
For background, had the Stax, still have the Large Apogee and almost bought one of only four sets of AHL Tolteques that were ever imported into the USA. Unfortunately, the deal fell through due to various problems; shipping being one of them. The AHL came in eleven crates and weighed far over a ton, transportation would have run more than the agreed upon price. C'est la vie.
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Follow Ups
- Top 3 speakers that vie for least efficient ever, Stax F81, Large Apogee and the AHL Tolteque plasma - cfb 06:02:53 07/21/12 (11)
- Don't forget the Dayton Wrights - Des 16:08:29 07/21/12 (10)
- Inefficiency wasn't the issue - E-Stat 06:52:24 07/22/12 (1)
- Would've been surely with no SF6 as poster below nt - Des 16:55:24 07/22/12 (0)
- RE: Don't forget the Dayton Wrights - drlowmu 19:03:31 07/21/12 (6)
- If you drove the primary of the transformer direct - Des 01:35:09 07/22/12 (0)
- The problem is too many have been repaired over the years without the SF6, Sulfur hexafluoride gas. - cfb 19:13:47 07/21/12 (4)
- Ah yes the Beeyootiful smell of SF6 in the morning Ha! nt - Des 01:31:11 07/22/12 (3)
- The good doctor Cooledge - E-Stat 07:00:33 07/22/12 (1)
- Yep --Been there did that - Des 16:53:29 07/22/12 (0)
- Supposedly, said with one's best Duvall imitation. ;-) - cfb 05:50:34 07/22/12 (0)
- Yes, let's not leave out the 1970s products, the Infinity Servo Static 1 and the Koss model 1, both of - cfb 19:02:52 07/21/12 (0)