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In Reply to: RE: It is also inherent in the panel shape posted by JLindborg on May 22, 2012 at 03:34:54:
Jerker (JLindborg) has given me some more insight information. I have to correct myself about the way the Apogee bass is working, the patent is not very clear on some points.
The bass diaphragm is tensioned, heavily tensioned in one direction, across the short dimension, with the help of springs. The springs are there to take up any variations caused by temperature, ageing etc., not to introduce a suspension. This is also a reason to why the panel can warp with time. As the diaphragm is corrugated in the other direction (top-to-toe), it can move rather freely. The tuning is held by the springs, giving some stiffness across the diaphragm. The damping strips of soft foam around the edge also let the diaphragm move a bit. Unfortunatley, the foam use to detoriate.
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Follow Ups Full ThreadTopic - Heard a reference level planar speaker last Saturday - morricab 02:36:26 05/07/12 (101)
- RE: Heard a reference level planar speaker last Saturday - A.Wayne 10:15:38 02/17/13 (0)
- Josh read my post below...even your claims through measurements are way off - morricab 14:53:55 05/15/12 (4)
- Morricab read my reply - josh358 18:05:13 05/15/12 (2)
- RE: Morricab read my reply - morricab 03:23:29 05/16/12 (1)
- RE: Morricab read my reply - josh358 05:39:35 05/16/12 (0)
- RE: Josh read my post below...even your claims through measurements are way off - JLindborg 15:30:34 05/15/12 (0)
- RE: Heard a reference level planar speaker last Saturday - KIS 18:46:49 05/12/12 (0)
- RE: Heard a reference level planar speaker last Saturday - tyu 07:52:19 05/12/12 (76)
- RE: Heard a reference level planar speaker last Saturday - josh358 08:23:08 05/12/12 (75)
- RE: Heard a reference level planar speaker last Saturday - jazzbeat 16:53:53 05/13/12 (74)
- RE: Heard a reference level planar speaker last Saturday - mmlrot1 06:00:30 05/14/12 (1)
- RE: Heard a reference level planar speaker last Saturday - josh358 14:51:43 05/14/12 (0)
- RE: Heard a reference level planar speaker last Saturday - josh358 19:04:11 05/13/12 (71)
- RE: Heard a reference level planar speaker last Saturday - morricab 01:43:33 05/14/12 (70)
- RE: Heard a reference level planar speaker last Saturday - josh358 08:43:57 05/14/12 (65)
- RE: Heard a reference level planar speaker last Saturday - jazzbeat 15:32:14 05/14/12 (0)
- RE: Heard a reference level planar speaker last Saturday - jazzbeat 15:28:17 05/14/12 (1)
- RE: Heard a reference level planar speaker last Saturday - josh358 16:07:54 05/14/12 (0)
- RE: Heard a reference level planar speaker last Saturday - berni 10:35:53 05/14/12 (61)
- RE: Heard a reference level planar speaker last Saturday - josh358 11:30:43 05/14/12 (60)
- RE: Heard a reference level planar speaker last Saturday - apog 19:17:39 05/14/12 (59)
- RE: Heard a reference level planar speaker last Saturday - josh358 19:53:27 05/14/12 (58)
- RE: Heard a reference level planar speaker last Saturday - JLindborg 00:35:35 05/15/12 (37)
- RE: Heard a reference level planar speaker last Saturday - josh358 06:42:16 05/15/12 (33)
- RE: Heard a reference level planar speaker last Saturday - morricab 14:23:18 05/15/12 (14)
- RE: Heard a reference level planar speaker last Saturday - josh358 16:06:36 05/15/12 (13)
- RE: Heard a reference level planar speaker last Saturday - morricab 03:36:37 05/16/12 (12)
- RE: Heard a reference level planar speaker last Saturday - josh358 06:10:19 05/16/12 (11)
- RE: Heard a reference level planar speaker last Saturday - morricab 05:01:25 05/20/12 (10)
- RE: Heard a reference level planar speaker last Saturday - josh358 06:26:08 05/20/12 (9)
- It is also inherent in the panel shape - morricab 00:34:02 05/21/12 (8)
- RE: It is also inherent in the panel shape - josh358 06:17:26 05/21/12 (7)
- RE: It is also inherent in the panel shape - JLindborg 09:49:42 05/21/12 (6)
- RE: It is also inherent in the panel shape - Roger Gustavsson 22:53:08 05/21/12 (5)
- RE: It is also inherent in the panel shape - JLindborg 00:24:31 05/22/12 (4)
- RE: It is also inherent in the panel shape - Roger Gustavsson 02:44:41 05/22/12 (2)
- RE: It is also inherent in the panel shape - JLindborg 03:34:54 05/22/12 (1)
- RE: It is also inherent in the panel shape - Roger Gustavsson 22:01:08 05/24/12 (0)
- RE: It is also inherent in the panel shape - morricab 02:24:52 05/22/12 (0)
- RE: Heard a reference level planar speaker last Saturday - JLindborg 07:57:49 05/15/12 (17)
- RE: Heard a reference level planar speaker last Saturday - josh358 09:33:55 05/15/12 (16)
- For Clarification - jazzbeat 15:53:28 05/15/12 (12)
- RE: For Clarification - josh358 17:04:04 05/15/12 (10)
- RE: For Clarification - Satie 15:03:04 05/16/12 (1)
- RE: For Clarification - josh358 19:46:37 05/16/12 (0)
- RE: For Clarification - morricab 13:48:07 05/16/12 (7)
- RE: For Clarification - josh358 15:10:49 05/16/12 (6)
- RE: For Clarification - morricab 09:22:12 05/17/12 (3)
- RE: For Clarification - josh358 11:47:48 05/17/12 (0)
- RE: For Clarification - acroy 11:01:17 05/17/12 (1)
- RE: For Clarification - josh358 19:18:20 05/17/12 (0)
- RE: For Clarification - JLindborg 16:53:21 05/16/12 (1)
- RE: For Clarification - josh358 17:46:26 05/16/12 (0)
- "teenagers are the only ones on the planet" ... - andyr 16:19:58 05/15/12 (0)
- RE: Heard a reference level planar speaker last Saturday - Emsquare 14:35:47 05/15/12 (2)
- RE: Heard a reference level planar speaker last Saturday - josh358 17:16:41 05/15/12 (1)
- RE: Heard a reference level planar speaker last Saturday - Emsquare 18:09:55 05/15/12 (0)
- RE: Heard a reference level planar speaker last Saturday - tyu 05:01:05 05/15/12 (0)
- Wow! Seems like your Duettas could do with an aluminium frame (that doesn't warp)? :-)) nt - andyr 01:36:44 05/15/12 (1)
- RE: Wow! Seems like your Duettas could do with an aluminium frame (that doesn't warp)? :-)) nt - JLindborg 01:45:19 05/15/12 (0)
- RE: Heard a reference level planar speaker last Saturday - berni 23:59:57 05/14/12 (19)
- RE: Heard a reference level planar speaker last Saturday - josh358 05:50:26 05/15/12 (18)
- RE: Heard a reference level planar speaker last Saturday - morricab 14:56:58 05/15/12 (2)
- RE: Heard a reference level planar speaker last Saturday - josh358 19:11:27 05/15/12 (1)
- RE: Heard a reference level planar speaker last Saturday - morricab 03:31:38 05/16/12 (0)
- RE: Heard a reference level planar speaker last Saturday - berni 05:58:48 05/15/12 (14)
- RE: Heard a reference level planar speaker last Saturday - josh358 06:56:55 05/15/12 (13)
- RE: Heard a reference level planar speaker last Saturday - berni 07:30:53 05/15/12 (12)
- RE: Heard a reference level planar speaker last Saturday - josh358 09:11:51 05/15/12 (11)
- RE: Heard a reference level planar speaker last Saturday - berni 09:30:26 05/15/12 (8)
- RE: Heard a reference level planar speaker last Saturday - josh358 10:32:55 05/15/12 (7)
- RE: Heard a reference level planar speaker last Saturday - berni 10:35:08 05/15/12 (6)
- RE: Heard a reference level planar speaker last Saturday - JBen 11:03:19 05/15/12 (2)
- RE: Heard a reference level planar speaker last Saturday - old guy 42 11:45:35 05/15/12 (0)
- RE: Heard a reference level planar speaker last Saturday - JLindborg 11:23:22 05/15/12 (0)
- RE: Heard a reference level planar speaker last Saturday - josh358 10:50:57 05/15/12 (2)
- RE: Heard a reference level planar speaker last Saturday - berni 11:01:31 05/15/12 (1)
- RE: Heard a reference level planar speaker last Saturday - josh358 11:23:20 05/15/12 (0)
- RE: Heard a reference level planar speaker last Saturday - berni 09:22:44 05/15/12 (1)
- RE: Heard a reference level planar speaker last Saturday - josh358 10:17:15 05/15/12 (0)
- RE: Heard a reference level planar speaker last Saturday - tyu 07:20:06 05/14/12 (0)
- RE: Heard a reference level planar speaker last Saturday - Roger Gustavsson 02:35:32 05/14/12 (2)
- RE: Heard a reference level planar speaker last Saturday - morricab 15:09:29 05/15/12 (1)
- RE: Heard a reference level planar speaker last Saturday - josh358 18:28:05 05/15/12 (0)
- RE: Heard a reference level planar speaker last Saturday - Lew 10:37:33 05/07/12 (7)
- RE: Heard a reference level planar speaker last Saturday - morricab 02:45:08 05/08/12 (5)
- RE: Heard a reference level planar speaker last Saturday - Lew 23:49:11 05/08/12 (4)
- RE: Heard a reference level planar speaker last Saturday - A.Wayne 10:10:39 02/17/13 (0)
- RE: Heard a reference level planar speaker last Saturday - morricab 01:08:47 05/09/12 (2)
- RE: Heard a reference level planar speaker last Saturday - Lew 13:51:31 05/09/12 (1)
- RE: Heard a reference level planar speaker last Saturday - morricab 00:40:37 05/10/12 (0)
- Ditto. Only heard of Scintillas happy with big Krell Class A amps. /nt\ - Opus 104 16:06:20 05/07/12 (0)
- RE: Heard a reference level planar speaker last Saturday - jsm71 08:05:47 05/07/12 (8)
- RE: Heard a reference level planar speaker last Saturday - JLindborg 11:42:10 02/16/13 (7)
- RE: Heard a reference level planar speaker last Saturday - tyuu 13:49:34 02/16/13 (6)
- RE: Heard a reference level planar speaker last Saturday - JLindborg 10:43:20 02/17/13 (2)
- RE: Heard a reference level planar speaker last Saturday - GFL 07:17:25 02/23/13 (1)
- RE: Heard a reference level planar speaker last Saturday - JLindborg 07:51:24 02/23/13 (0)
- RE: Heard a reference level planar speaker last Saturday - JLindborg 13:58:37 02/16/13 (2)
- RE: Heard a reference level planar speaker last Saturday - A.Wayne 11:09:30 02/17/13 (1)
- RE: Heard a reference level planar speaker last Saturday - tyuuu 09:33:40 02/19/13 (0)
Follow Ups
- RE: It is also inherent in the panel shape - Roger Gustavsson 22:01:08 05/24/12 (0)