RTA15t radiators

mstng281
mstng281 Posts: 2
edited January 2009 in Vintage Speakers
Hello everyone, this is my first post although I have been reading the forums for quite some time. I recently bought a pair of RTA15t's w/blown tweeters which I immediately replaced with RD0-198's. My question is about the passive radiators. There were cardboard donuts mounted to the backs of them but they had lost the adhesive and were just floating around inside the cabinets. So I took them out and put the speakers back together and have been enjoying them very much.(I upgraded from a pair of 11t's w/SL2000's) Should I reattach the donuts to the backs of the radiators or just leave them off? I don't see how they could be necessary. If I do need them, what should I use for adhesive, superglue? Any suggestions would be greatly appreciated.
Post edited by mstng281 on

Comments

  • Face
    Face Posts: 14,340
    edited January 2009
    Yes, you need them. They are what tunes the PR's to a specific frequency, just like the length of a port.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
  • MillerLiteScott
    MillerLiteScott Posts: 2,561
    edited January 2009
    Why did you replace your tweeters with the RDO 198's? if your speakers are a T model they should have been the RDO 194's. The TL models get the 198's.
    I like speakers that are bigger than a small refrigerator but smaller than a big refrigerator:D
  • mstng281
    mstng281 Posts: 2
    edited January 2009
    I called Polk and the guy on the phone said I should get 198's. However, my speakers are 15t's but the blown tweets that were in them are SL3000's. Someone must have upgraded them at some point. I didn't tell the Polk guy that though, I just told him that they were 15t's and he sent me 198's.
  • heiney9
    heiney9 Posts: 25,213
    edited January 2009
    Why did you replace your tweeters with the RDO 198's? if your speakers are a T model they should have been the RDO 194's. The TL models get the 198's.

    There never was a model 15T. The 15 was always a TL because it had the sl3000 tweeter.

    Actually there was a Monitor 15 that was Army issue (on Army bases) that's a fairly rare piece of Polk history. They had no relation to the RTA 15TL.
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
  • MillerLiteScott
    MillerLiteScott Posts: 2,561
    edited January 2009
    Thanks H9.

    I will put that in my mental vault.

    Scott
    I like speakers that are bigger than a small refrigerator but smaller than a big refrigerator:D