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What to do with a quad of R176?

I have 4 of the Rival R176P paper cone drivers and am thinking about building a floor stander with them. I found Don's mtm build, but his uses the "CP" drivers. Has anyone else done a mtm or a 2.5 way with the "P" drivers?

Comments

  • I don't know the exact differences between the P and the CP. They seem to be almost the same. I have a TMWW project in the works that uses the four CP version I have. I think Ben (Wolf) used the P version in one of his projects.

  • Yeah- the Fenrir was the open-source commissioned kit RAD was selling from me. Sorry, only a TM though.

    Thoughts- I would aim for 36ltrs with a pair of them. The manufacturer suggested 20/per, but I felt the bass was better controlled in 18 ltrs.

    PWRRYDsquamishdroc
  • Ben, I have so many Rival drivers on the shelf, I could build 2 more MTMs.
    As far as I know, the TS parameters of all of the Rival R176* drivers were/are very close.
    If you'd like to taste an MLTL, I could load up the R176CPs in Hornresp and work it up.
    I am very happy with those MTMs. Tons of bass, lots of midrange clarity.

    Don, Donno, or "Hey you" all work for me, But never "Mr Johnson"
  • Did you mean this to me? I'm referring to standard vented alignments at 36 ltrs for a pair. The Xmax is better controlled in the 18ltr Fenrir than a 20ltr by comparison or theoretical models.
    I have no reason to attempt an MTM/TMM with R176 as I only have one pair of them here.

  • @Wolf said:
    Did you mean this to me? I'm referring to standard vented alignments at 36 ltrs for a pair. The Xmax is better controlled in the 18ltr Fenrir than a 20ltr by comparison or theoretical models.
    I have no reason to attempt an MTM/TMM with R176 as I only have one pair of them here.

    Oh, sorry, of course I meant to reply to @squamishdroc

    Don, Donno, or "Hey you" all work for me, But never "Mr Johnson"
  • @rjj45 said:
    Ben, I have so many Rival drivers on the shelf, I could build 2 more MTMs.
    As far as I know, the TS parameters of all of the Rival R176* drivers were/are very close.
    If you'd like to taste an MLTL, I could load up the R176CPs in Hornresp and work it up.
    I am very happy with those MTMs. Tons of bass, lots of midrange clarity.

    That would be great - thanks👍

  • OK, post or send me the TS parameters.

    Don, Donno, or "Hey you" all work for me, But never "Mr Johnson"
  • Here are the specs for the woofers - there is a bit of difference between the two as one set have not been used and the others have been in a build for about a year or so.

    Used drivers,

    New drivers,

  • Ok, I'll run the sim with the used numbers because they always shift during breakin.

    Don, Donno, or "Hey you" all work for me, But never "Mr Johnson"
  • @rjj45 said:
    Ok, I'll run the sim with the used numbers because they always shift during breakin.

    Thanks👍

  • The only difference between the 'P' and the 'CP' is the coating.

  • @Gowa said:
    The only difference between the 'P' and the 'CP' is the coating.

    That's what I thought, but the TS parameters are quite a bit different it seems, unless the DATS output was incorrect for some reason. I thought that all of the R176 versions were very similar for TSP. In particular, the CP were shown with .36 QTS and the values above are .43 QTS.

    Don, Donno, or "Hey you" all work for me, But never "Mr Johnson"
  • @squamishdroc - I searched for R176 here, and not only found the R176P, I found a MTM MLTL design by the great PaulK. I think this will work perfectly for you.

    https://cdn.shopify.com/s/files/1/1367/2111/files/R176-P-08-Cabinet-MTM.pdf?9731610971613362139

    Don, Donno, or "Hey you" all work for me, But never "Mr Johnson"
  • @rjj45 said:
    @squamishdroc - I searched for R176 here, and not only found the R176P, I found a MTM MLTL design by the great PaulK. I think this will work perfectly for you.

    https://cdn.shopify.com/s/files/1/1367/2111/files/R176-P-08-Cabinet-MTM.pdf?9731610971613362139

    Thanks Don - don't know how I didn't see that when I was searching.

    rjj45
  • @squamishdroc said:

    @rjj45 said:
    @squamishdroc - I searched for R176 here, and not only found the R176P, I found a MTM MLTL design by the great PaulK. I think this will work perfectly for you.

    https://cdn.shopify.com/s/files/1/1367/2111/files/R176-P-08-Cabinet-MTM.pdf?9731610971613362139

    Thanks Don - don't know how I didn't see that when I was searching.

    You cannot do any better than a PaulK MLTL.

    Don, Donno, or "Hey you" all work for me, But never "Mr Johnson"
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