Subwoofer compliment for RS TMWW

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  • mmoeller
    Senior Member
    • May 2006
    • 138

    Subwoofer compliment for RS TMWW

    Last year I build my RS TMWW towers. They have been spectacular. I need a good XMAS project, so I've decided to make the compliment subwoofer for these. I was curious what size would marry well with the towers. I believe they roll off at about 100hz.

    I was considering a 15" of one variety or another. I would like to keep the driver under 300-400$. I would be completely open to somthing a bit cheaper. Adding power and EQ would be required as well, and I would rather spend a bit more there.
  • ---k---
    Ultra Senior Member
    • Nov 2005
    • 5202

    #2
    Maelstrom-21" $595.00


    Oh, you wanted under $400.

    Tempest-X2 15" $219.00


    Would work really well. Will give you the most displacement/$$. Good quality. Kevin has excellent application notes with several sealed and ported designs.
    - Ryan

    CJD Ochocinco! ND140/BC25SC06 MTM & TM
    CJD Khanspires - A Dayton RS28/RS150/RS225 WMTMW
    CJD Khancenter - A Dayton RS28/RS150/RS180 WTMW Center

    Comment

    • mmoeller
      Senior Member
      • May 2006
      • 138

      #3
      Thanks Ryan. That looks about right.

      Comment

      • Mazeroth
        Senior Member
        • Nov 2004
        • 422

        #4
        Looks like the prices went up a day after you posted them.

        Comment

        • ---k---
          Ultra Senior Member
          • Nov 2005
          • 5202

          #5
          Yep. I thought $219 was cheaper than normal. Still, $259 is a good deal for a woofer like that. A few years back, I paid ~$350/ea for my RL-p15 drivers. I would rather have a pair of Tempests, but they weren't being made at the time.
          - Ryan

          CJD Ochocinco! ND140/BC25SC06 MTM & TM
          CJD Khanspires - A Dayton RS28/RS150/RS225 WMTMW
          CJD Khancenter - A Dayton RS28/RS150/RS180 WTMW Center

          Comment

          • Jim Holtz
            Ultra Senior Member
            • Mar 2005
            • 3223

            #6
            Originally posted by mmoeller
            Last year I build my RS TMWW towers. They have been spectacular. I need a good XMAS project, so I've decided to make the compliment subwoofer for these. I was curious what size would marry well with the towers. I believe they roll off at about 100hz.

            I was considering a 15" of one variety or another. I would like to keep the driver under 300-400$. I would be completely open to somthing a bit cheaper. Adding power and EQ would be required as well, and I would rather spend a bit more there.
            Actually, the RS225 in a sealed configuration have a F/3 of around 50 hz. I think you'll find that crossing to the sub from 40-60 hz. will work very well. I'd also suggest you get a plate amp with a 24 db crossover rather than the usual 12 db. It gets the sub out of the way a little quicker and minimizes the interaction with the upper bass of the speaker.

            JIm

            Comment

            • orbifold
              Member
              • Jun 2006
              • 70

              #7
              MMoeller,

              I have the RS TMWW's and love them also. I have a Tempest XJ-15 (tempest1?) Sealed, in about 7 cu, with the plate amp linked below.
              To follow up what Jim just said, this is my amp,



              on sale now at $250. It seem to have the 24db XO.
              I love it, though I still have tweaks and so forth to do. I just added the CC WMTW.
              I would look at the link and check the comments by Vance in the reviews. I will probably put the whole system on a 30amp, separate breaker, and since I read this, I might try the hospital type circuit he mentions. Right now the SW runs with a 30' plain-jane coax and all my cables are scheduled for upgrades, too.
              I don't know, but I bet Kevin made improvements to the Tempest2, so I don't think you would be unhappy with it. OTOH, if you do have a large room the Mal-x would be great. That would up the $$ on both the driver and the amp, though.
              Don't fight, don't argue... If you stay healthy and wait by the river, you'll see all your enemies float by, one by one!

              Anonymous

              Comment

              • stgdz
                Member
                • May 2009
                • 60

                #8
                Horn designs seem to be all the rage over at AVS now

                Comment

                • mmoeller
                  Senior Member
                  • May 2006
                  • 138

                  #9
                  Originally posted by Jim Holtz
                  Actually, the RS225 in a sealed configuration have a F/3 of around 50 hz. I think you'll find that crossing to the sub from 40-60 hz. will work very well. I'd also suggest you get a plate amp with a 24 db crossover rather than the usual 12 db. It gets the sub out of the way a little quicker and minimizes the interaction with the upper bass of the speaker.

                  JIm
                  With the LFE channel crossover add into the low pass slope of the plate amp? I'm assuming it will. Is it important to match the LFE filter and the plate amp filter frequencies? It might make sense to disengage one or the other, for simplicities sake.

                  Comment

                  • Jim Holtz
                    Ultra Senior Member
                    • Mar 2005
                    • 3223

                    #10
                    Originally posted by mmoeller
                    With the LFE channel crossover add into the low pass slope of the plate amp? I'm assuming it will. Is it important to match the LFE filter and the plate amp filter frequencies? It might make sense to disengage one or the other, for simplicities sake.
                    Not in my experience. Mu philosophy (opinion) is the quicker you get the sub out, the better the sound quality. The LFE channel will give you another 12 db for a total of 36 db. That's a good thing as far as I'm concerned.

                    The RS225's have excellent bass quantity and quality. By playing with the sub crossover, you'll easily get the amount of bass you want without muddying up the sound quality.

                    My $.02 worth.... YMMV...

                    Jim

                    Comment

                    • HareBrained
                      Senior Member
                      • Jul 2008
                      • 230

                      #11
                      Although not absolutely necessary, if you select an amp with variable phase, it can help find a sweet spot to integrate with the main speakers. It's one of those things that you go "Oh, that's better."
                      John

                      Comment

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