Polydome Infinity Kappa midrange replacement / fix

[Tom Benner]

Hi DC,

I bow to your superior post count and vast experience. I did not exclude. I tried to point out that your new ideas aren't, and the driver in question isn't the "best" solution. I also tried to point you to research your topic, which should have given some information on the efficacy of the driver in question. Again, your chosen driver will "work" and researching the topic shows this albeit with some modification. What some here including myself have done is tried the various drivers including those from other Infinity lines and have come to the conclusions we have come to based on our own listening experiences. If you don't believe me or us so be it.

The driver you mention is available cheaper elsewhere for those interested in trying the comparisons. There are other options available as well which are probably "better" which have already been discussed. The other option is to take the already done comparisons at face value and decide what is best for you.

It would be great for you to tell us what you think of the various drivers including originals in your own listening tests.

I value your opinion but it doesn't seem to be the consensus and my own listening tests tell me so.

We are collectively hoping that a member here comes up with a proper replacement and then hopefully "The Polydome Alternative" debate will come to an end.

Thanks,

Mark K.

Curious. Will the new polydome replacement eventually disintegrate as well?

 

[markuus3889]

Curious. Will the new polydome replacement eventually disintegrate as well?

Hi Tom,

I'm certainly no prognosticator, but the Second Law of Thermodynamics guarantees it!

Mark K.

PS: not sure why you quoted me, hope the reply helps

 

[Lapslah]

Not trying to dig up an old argument, but for informational purposes, the replacement speaker linked in the first post of this thread must have changed since most of the preceding discussion occurred. If you follow the link you'll see that the impedance of the speaker they are now selling is 4 Ohms.

Regarding the Miller Sound refurbishment, does anyone know the cost if you provide everything but the disintegrated domes? I have looked on their website and it gives you all of the information from what they do to how to pack and ship your drivers to them, but no price.

 

[seifreit]

Not trying to dig up an old argument, but for informational purposes, the replacement speaker linked in the first post of this thread must have changed since most of the preceding discussion occurred. If you follow the link you'll see that the impedance of the speaker they are now selling is 4 Ohms.

Regarding the Miller Sound refurbishment, does anyone know the cost if you provide everything but the disintegrated domes? I have looked on their website and it gives you all of the information from what they do to how to pack and ship your drivers to them, but no price.

I believe they may be getting close to $300/pair when you include shipping. Last number I saw a couple years ago was over $275

 

[Tom Benner]

Is this fix really worth it? Can't you buy a used spkr and refoam for about the same price... and it would sound as good?
Will the new polydome degrade also??
No EGO

 

[RVT1K]

Is this fix really worth it? Can't you buy a used spkr and refoam for about the same price... and it would sound as good?
Will the new polydome degrade also??
No EGO

I imagine, given enough time, anything will degrade especially if it is in a poor environment. What was the typical life expectancy of the originals?

 

[Tom Benner]

I imagine, given enough time, anything will degrade especially if it is in a poor environment. What was the typical life expectancy of the originals?

It was not that long. Given my limited experience, it was a faulty design or chemical they used. Much chagrined I am, because I bought (won) Kenwood monoblocks, L-OM7 and did not win the matching L-O7C at the auction. I have a Rotel that I can pair with the Kenwood's and have a pair of Kappa 7's I got for cleaning out my and my neighbor's poison ivy. Of course, the polydomes were as expected. But I already bought replacement mids, not the original dome type. Now I'm uncertain what to do. First world problem, I guess.

 

[RVT1K]

It was not that long. Given my limited experience, it was a faulty design or chemical they used. Much chagrined I am, because I bought (won) Kenwood monoblocks, L-OM7 and did not win the matching L-O7C at the auction. I have a Rotel that I can pair with the Kenwood's and have a pair of Kappa 7's I got for cleaning out my and my neighbor's poison ivy. Of course, the polydomes were as expected. But I already bought replacement mids, not the original dome type. Now I'm uncertain what to do. First world problem, I guess.

Try out the replacement mids and see what you think. If you like them..problem solved.

If you don't, I guess contacting Miller Sound and asking about longevity of the new domes would be the way to go.

 

[swechsler]

I imagine, given enough time, anything will degrade especially if it is in a poor environment. What was the typical life expectancy of the originals?

It really depends. The RSDS Polydomes, made with the same magnet and voice coil and the Polydome K, but with the material (IMG) of the Kappa woofer, lasts pretty much as long as said woofer.