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Old 28th March 2009, 05:50 AM   #11
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TPL-150 build thread without the horn:

Beyma tpl-150 + Lambda TD12M's

Greg
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Old 30th March 2009, 08:24 PM   #12
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I have both, but havent listened to the horn loaded TPL yet....

Here's a measurement of both without baffle. The upper curve is, obviously, the TPL150H. I would expect a little more LF extension with the TPL150H mounted in a baffle. The TPL150 sure extends a lot more in a 30-40 cm wide baffle. I'm will try to run the TPL150H as low as 800 Hz...
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Old 20th August 2010, 08:39 AM   #13
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here my first test with this driver

Hi-End and Hi-Eff loudspeakers system 2
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Old 21st August 2010, 06:15 PM   #14
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I am very sceptical that these AMTweeters can handle a few watts of pink noise (third-octave bandwidth) around the lower cutoff freq without introducing easily to detect massive amounts of distortion artefacts , aka intermodulation distortion . Reason is the non-homogeneous driven surface and the nonlinear mechanical spring properties of the conductor/film-carrier combination .

Someone out there might have the balls to check that out


sorry for the bad news ...
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Old 9th October 2010, 05:57 PM   #15
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Here the new filter with constant impedance

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