Author Topic: Infinity Kappa 8 speaker rebuild with DSP crossover  (Read 186 times)

Offline HAL

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Infinity Kappa 8 speaker rebuild with DSP crossover
« on: May 15, 2024, 06:40:00 AM »
A friend found a pair of Infinity Kappa 8 speakers that need the Polydome K's and 12in woofers rebuilt.  Picked them up awhile ago. Not going to complain for $80/pair. :)

These are the original version 4-way speaker with the bipole EMIT planar tweeters, Polydome K, Polygraph K dome and 12in woofer.

Found out that Miller Sound in PA does the rebuilds, so hope to be dropping them off this weekend.

Will post pictures of the process along the way of replacing the passive crossover with the DSP crossover from measurements.

Offline Nick B

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Re: Infinity Kappa 8 speaker rebuild with DSP crossover
« Reply #1 on: May 15, 2024, 08:57:54 AM »
Sounds quite interesting, Rich. Millersound is still around, huh. Have heard their name for years, but haven't had need to use them yet.
Nick
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Offline malloy

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Re: Infinity Kappa 8 speaker rebuild with DSP crossover
« Reply #2 on: May 21, 2024, 09:11:23 PM »
I've only seen these in magazines and on display. Always wondered what they sounded like.

These the ones?



Late 80s early 90s?

Paul

Offline HAL

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Re: Infinity Kappa 8 speaker rebuild with DSP crossover
« Reply #3 on: May 22, 2024, 04:16:16 AM »
Yes. They were built from '85-'89 from what I can find.

The Polydome K midrange dome and 12in woofer foam surrounds are being replaced due to age deterioration.  The new replacement parts should last a lot longer.

This just happened to be something a friend that worked at a retirement community spotted in their donation closet.  For $80/pair, might as well see what happens.

Offline Nick B

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Re: Infinity Kappa 8 speaker rebuild with DSP crossover
« Reply #4 on: May 22, 2024, 01:10:22 PM »
Yes. They were built from '85-'89 from what I can find.

The Polydome K midrange dome and 12in woofer foam surrounds are being replaced due to age deterioration.  The new replacement parts should last a lot longer.

This just happened to be something a friend that worked at a retirement community spotted in their donation closet.  For $80/pair, might as well see what happens.

For $80, indeed 👍
Orchard Starkrimson Ultra amp
Supratek Chardonnay preamp
JMR Voce Grande speakers
Border Patrol SEi dac
Holo Red streamer
Hapa Aero digital coax
WyWires Silver cables
TWL Digital American II p cord
Audio Envy p cords
Roon, Tidal, Qobuz
PI Audio UberBUSS

Offline malloy

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Re: Infinity Kappa 8 speaker rebuild with DSP crossover
« Reply #5 on: May 23, 2024, 09:59:12 PM »
That is indeed a good deal.
Some new binding posts cost more than that!  :thumb:

Paul