In Reply to: RE: Addendum posted by KIS on April 26, 2012 at 09:18:34:
The "masses" can do whatever they want. All I can say is that the impedance goes way low when the two transformers are 180 degrees out of phase, which is not so favorable any more for our OTL amplifiers. I don't have my data in front of me, but as I recall the impedance was 4 ohms-ish and lower across the bandwidth. Also, Ralph had the idea that there would be some unwanted heating of one or both transformers. Apart from that, the out of phase hook-up might actually be favorable for the usual SS amplifier.
Only other thing: I am pretty sure that Rob himself told me the 100:1 treble transformer would not be comfortable unless rolled off on the low end at about 300Hz. Whether he meant categorically to say that it is necessary, I do not know. Anyway, I too prefer the 90:1 full-range transformers.
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Follow Ups
- RE: Addendum - Lew 12:16:04 04/26/12 (16)
- RE: Addendum - KIS 12:39:12 04/26/12 (15)
- RE: Addendum - Ralph 13:42:00 04/26/12 (14)
- RE: Addendum - KIS 16:44:07 04/26/12 (13)
- RE: Addendum - Lew 12:14:02 04/27/12 (0)
- RE: Addendum - Ralph 09:12:28 04/27/12 (11)
- RE: Addendum - KIS 10:16:23 04/27/12 (10)
- RE: Addendum - tyu 12:22:51 04/27/12 (6)
- RE: Addendum - KIS 19:10:40 04/27/12 (5)
- RE: Addendum - tyu 05:51:54 04/28/12 (2)
- RE: Addendum - KIS 18:32:51 04/28/12 (0)
- Very interesting ideas - Lew 08:40:24 04/28/12 (0)
- RE: Addendum - Ralph 20:38:23 04/27/12 (1)
- RE: Addendum - KIS 21:13:55 04/27/12 (0)
- RE: Addendum - Lew 12:03:35 04/27/12 (1)
- RE: Addendum - KIS 18:35:50 04/27/12 (0)
- RE: Addendum - Ralph 10:36:16 04/27/12 (0)