Author Topic: Infinity Kappa 8 speaker rebuild with DSP crossover  (Read 1872 times)

Offline malloy

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Re: Infinity Kappa 8 speaker rebuild with DSP crossover
« Reply #15 on: June 04, 2024, 09:55:08 PM »
Nice.  :thumb: Like I've been saying, "Exciting stuff!"

Offline HAL

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Re: Infinity Kappa 8 speaker rebuild with DSP crossover
« Reply #16 on: June 05, 2024, 04:13:33 PM »
Unpacked the repaired drivers for the Kappa 8 repair.

Wiring the drivers directly to a new terminal plate.

Offline malloy

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Re: Infinity Kappa 8 speaker rebuild with DSP crossover
« Reply #17 on: June 06, 2024, 10:52:46 PM »
Wow. These even still have the Infinity logo on them! Were the surrounds the only things damaged?


Offline HAL

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Re: Infinity Kappa 8 speaker rebuild with DSP crossover
« Reply #18 on: June 07, 2024, 01:32:39 AM »
The woofers dust caps were foam and deteriorating as well so were replaced.

Millersound designed a new replacement dome system that is based on the dust cap of the 12in woofer.  They are the only ones that replace domes on original Polydome K midranges.  They have gotten good reviews for their work, so decided to give them a try.  Everything seems very well done.

All the rest of the replacement companies have designed new Polydome style drivers.  There are at least 3 of them that make new midrange units.  Problem I see is that the Kappa 8 speakers rated sensitivity is 89dBSPL/1w/1m.  One of the replacements is 83dBSPL/1w/1m and another is 81dBSPL/1w/1m sensitivity, so do not seem to be a good fit for replacements.  One designed by Vifa/Scan Speak is 92dBSPL/1w/1m, so it should be a good fit, but it is the most expensive replacement driver.

Offline HAL

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Re: Infinity Kappa 8 speaker rebuild with DSP crossover
« Reply #19 on: June 24, 2024, 02:29:35 PM »
The Infinity Kappa 8 Polydome K repaired and being reinstalled in the baffle.  Wiring reworked with the original wiring as it is glued into the sealed cavity behind the driver. 

No problem installing connectors as there is excess wiring for repairs to be done.