POLK RTIA series Bookshelf or S20e

sand87ch
sand87ch Posts: 4
in Speakers
I have zeroed in on two bookshelf pairs

1.Polk RTIA1
2.Polk S20e

The confusion is only one.I read in RTI series product manual that they have a ferrousfluid in them for heat management probably.

Issue is i have read that they tend to degrade or clump up over time thereby destroying the fidelity of the speakers.

Thats the only reason why i looked into the S20e as i dont want to have to replace the speakers for a long time due to low finance and also i want to build the system over the years adding more speakers and i dont want to have to take the extra money to replace the ones already i own.

Any thoughts??
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  • F1nut
    F1nut Posts: 50,647
    edited May 2020 Answer ✓
    It's called ferrofluid and it's been used in hundreds, maybe thousands of tweeters for a very long time. Don't be surprised if the Signature series tweeters use it too.

    As for building a system over time, the RTiA series is discontinued, so not a good choice if you can't buy all of them now.
    Political Correctness'.........defined

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  • rooftop59
    rooftop59 Posts: 8,121
    Answer ✓
    If you listen to a lot of music - and especially if you will be using an entry/mid level home theater receiver - definitely go with the signature series. The tweeter in the RTiA series can be fatiguing. And yes, easier to build a system gradually around the signature series.
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