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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Spectralinear 1280 Speakers (Solar Audio Prod. Inc.) posted by strijw426 on May 14, 2012 at 12:52:40:
I received the new foam surrounds for the 8" speakers in these units and began the repair on the first unit. I decided to look closer at the interior of the cabinets. It turned out that what I first thought was a 12" woofer and 8" mid-bass or mid-range was actually a 12" passive radiator and the 8" is the active woofer. The 4 ½" midrange is fed by an 8 mFd @50V NP electrolytic. The 4 ½" slot tweeter is fed by a 4.7 mFd @50V NP electrolytic. That is the extent of the "cross-over" network. There are no inductors and no level controls. This is a very simple design.
The new foam surround has been attached to the first 8" woofer edge. It must dry for a minimum of 1 hour. Then I can glue the outer edge of the foam surround to the basket (allowing about 5 minutes of dry time between application of glue film to basket surface and back side of foam surround outer edge before pressing into place. There are shims keeping the voice coil centered while the first glueing operation cures. It will be interesting to see how these speakers sound after repair.
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Follow Ups
- RE: Spectralinear 1280 Spkr Foam Surround Replacement - strijw426 13:17:27 05/22/12 (2)
- RE: Spectralinear 1280 Spkr Foam Surround Replacement - strijw426 16:25:37 06/25/12 (0)
- Suggestions - caspian@peak.org 11:50:19 06/25/12 (0)
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