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  • Dayton ST-305 sims/thoughts

    I am using the ST305 in my current design. It has a huge VAS requiring 3+cube in a vented enclosure to yield decent bass, so I am finding. Wondering if anyone has run any sims on this woofer and can verify my findings. As of now I am at:

    3ft3 with an FS of 44Hz and F10 of 24Hz. Dual 3x12" ports hit a max velocity of 22 m/s at 22Hz at max power, though I will run out of xmax well before that, nor will I be driving them THAT hard.

    With 150W input I do not exceed x-max until 23Hz with an average simulated 1M SPL of 112dB. Seems pretty good to me for a rockin' monkey coffin, which these ultimately will be.

    Any thoughts? I am looking for strong deep bass, but I am trying not to go too under-damped.
    Attached Files
    .

  • #2
    Re: Dayton ST-305 sims/thoughts

    Are you using the published specs or the CLIO specs? I've been modeling the same woofer but it's been coming up with a little deeper bass than that.

    If your Bass Box database doesn't have the driver "ST305-8 CLIO '06" , you might want to update the database.

    http://www.ht-audio.com/downloads/htdb0311.exe

    EDIT : FWIW I think that woofer should make a fantastic bottom of a 3-way and I often wonder why we don't see it used more often , I am strongly considering it for a future project.

    Comment


    • #3
      Re: Dayton ST-305 sims/thoughts

      Mike,

      Have you looked at the DC300? Won't take a lot of power, but will still play pretty loud and deep? 19m/s @20Hz, exceeds Xmax below ~25.

      I've got a pair in a n Econowave config ( about to port them). Here's a WBCD model.
      Attached Files
      I was so much older then, I'm younger than that now.
      OS MTMs http://techtalk.parts-express.com/sh...d.php?t=220388
      Swope TM http://techtalk.parts-express.com/sh...d.php?t=221818
      Econowave and Audio Nirvana AN10 fullrange http://techtalk.parts-express.com/sh...d.php?t=216841
      Imperial Russian Stouts http://techtalk.parts-express.com/sh...=1#post1840444
      LECBOS. http://techtalk.parts-express.com/sh...ghlight=lecbos

      Comment


      • #4
        Re: Dayton ST-305 sims/thoughts

        Originally posted by fastbike1 View Post
        Mike,

        Have you looked at the DC300? Won't take a lot of power, but will still play pretty loud and deep? 19m/s @20Hz, exceeds Xmax below ~25.

        I've got a pair in a n Econowave config ( about to port them). Here's a WBCD model.
        Those look awesome. I was weary of their power handling as I wanted something that could play consistanltly over 100dB without too much compression with just about anything. They are already in my hands, so I am stuck with them. The mistake I made was simple: All the specs looked great, but I misread the Vas... Should have thought it was originally too good to be true.

        I usually so not use larger than an 8" woofer, so I was hoping for some confirmation the box looked OK.

        Though you caught my attention with the DC300! I always wanted to to a WMTMW modular and gigantic with 12 or 15" woofters and 7" mids.
        .

        Comment


        • #5
          Re: Dayton ST-305 sims/thoughts

          The DC300 is a pretty decent driver. Sealed in 66 liters gives F3/F10 of 44/26.
          101dB w/ 20 watts.
          I was so much older then, I'm younger than that now.
          OS MTMs http://techtalk.parts-express.com/sh...d.php?t=220388
          Swope TM http://techtalk.parts-express.com/sh...d.php?t=221818
          Econowave and Audio Nirvana AN10 fullrange http://techtalk.parts-express.com/sh...d.php?t=216841
          Imperial Russian Stouts http://techtalk.parts-express.com/sh...=1#post1840444
          LECBOS. http://techtalk.parts-express.com/sh...ghlight=lecbos

          Comment


          • #6
            Re: Dayton ST-305 sims/thoughts

            Originally posted by fastbike1 View Post
            Mike,

            Have you looked at the DC300? Won't take a lot of power, but will still play pretty loud and deep? 19m/s @20Hz, exceeds Xmax below ~25.

            I've got a pair in a n Econowave config ( about to port them). Here's a WBCD model.
            How do you like the ewave and what do you have to compare them to?

            Comment


            • #7
              Re: Dayton ST-305 sims/thoughts

              +1 on the DC300. Using them in 3cuft tuned to ~25Hz, they play low ([email protected] 36Hz, -10dB @ 22Hz) with plenty of bass for music wihout a sub. Haven't ever had a problem over-driving them in fullrange on my AVR. Have tried them on a PV900 PA amp (150w/ch ?) and they loved it, not too much distortion when pushed a little passed xmax. I considered the ST305 as an upgrade back when I redid my Xovers, but the cheap side of me won out.

              The SeriesII should be even better! From what I can tell they'd prefer a bigger coffin than 3cuft though, maybe 4cuft?

              Comment


              • #8
                Re: Dayton ST-305 sims/thoughts

                The biggest difference between the two is output capability. The DC-300 is X-max limited , they both work well in a 3 cubic foot enclosure , and will perform very similarly , up to a certain volume.

                These graphs tell a lot ......

                Comment


                • #9
                  Re: Dayton ST-305 sims/thoughts

                  I like them well enough that I am going to port them for more low end and will damp the basket and waveguide. I primarily use them when I'm ripping vinyl but I have listened to them for fairly long periods without fatigue. They can go loud on not a lot of power and would be good party speakers.

                  Are they the most sophisticated speaker? No. They are a simple, fun, relatively inexpensive build in an old cabinet. If I had to build only one design, these wouldn't be it. I'm not sorry I built them, and as I said, I'm keeping them.

                  As far as what I have to compare with, frankly I think that's all useless info. You don't have my ears, my gear, or my musical taste.

                  What do you want? If you want loud and inexpensive, rock or blues; these will work. Classical, jazz, vocal, there are better choices.

                  Originally posted by ontariomaximus View Post
                  How do you like the ewave and what do you have to compare them to?
                  I was so much older then, I'm younger than that now.
                  OS MTMs http://techtalk.parts-express.com/sh...d.php?t=220388
                  Swope TM http://techtalk.parts-express.com/sh...d.php?t=221818
                  Econowave and Audio Nirvana AN10 fullrange http://techtalk.parts-express.com/sh...d.php?t=216841
                  Imperial Russian Stouts http://techtalk.parts-express.com/sh...=1#post1840444
                  LECBOS. http://techtalk.parts-express.com/sh...ghlight=lecbos

                  Comment


                  • #10
                    Re: Dayton ST-305 sims/thoughts

                    Hrmm. Just re-crunched some numbers and did some modelling. If I used the ST305 instead of the DC300 in my own monkey coffins, it'd just be a slight Xover change. Would gain 2dB in total system sensitivity and would have much higher power handling, only caveat being very slightly steeper rolloff of the lows due to that bigger Vas.

                    May consider it an upgrade in the future

                    Why not get ambitious with your monkey coffins and consider the ST385?

                    Comment


                    • #11
                      Re: Dayton ST-305 sims/thoughts

                      Here's some inspiration, courtesy of UK manufacturer ATC (which manufactures both hi-fi and studio monitoring products):

                      ATC SCM100



                      The design uses a 3" ATC dome mid and a Seas Excel 1" soft-dome tweeter. The 12" ATC-built bass driver is a bit beefier than the Eminence-built Dayton Series II 12", but the Series II driver should be more than enough to compete, and could be combined with the Tang Band 3" dome mid for something similar to the ATC.

                      And for those days when you Just Want A Freakin' Fifteen Inch Woofer: SCM150
                      Best Regards,

                      Rory Buszka

                      Taterworks Audio

                      "The work of the individual still remains the spark which moves mankind ahead, even more than teamwork." - Igor I. Sikorsky

                      If it works, but you don't know why it works, then you haven't done any engineering.

                      Comment


                      • #12
                        Re: Dayton ST-305 sims/thoughts

                        Originally posted by Taterworks View Post
                        but the Series II driver should be more than enough to compete, and could be combined with the Tang Band 3" dome mid for something similar to the ATC.

                        SCM150

                        Similar looking you mean....


                        http://www.snell.no/the_archives_type_B.htm Some inspiration from the past, A, B type IV...etc

                        Comment


                        • #13
                          Re: Dayton ST-305 sims/thoughts

                          Originally posted by DE Focht View Post
                          Similar looking you mean....


                          http://www.snell.no/the_archives_type_B.htm Some inspiration from the past, A, B type IV...etc
                          Yes. The idea is that the OP would be building a speaker with a similar configuration and similar appearance, but no guarantee of similar performance.
                          Best Regards,

                          Rory Buszka

                          Taterworks Audio

                          "The work of the individual still remains the spark which moves mankind ahead, even more than teamwork." - Igor I. Sikorsky

                          If it works, but you don't know why it works, then you haven't done any engineering.

                          Comment


                          • #14
                            Re: Dayton ST-305 sims/thoughts

                            I still love the look of these:

                            http://www.atcloudspeakers.co.uk/el150a.php



                            Later,
                            Wolf
                            "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
                            "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
                            "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
                            "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

                            *InDIYana event website*

                            Photobucket pages:
                            https://app.photobucket.com/u/wolf_teeth_speaker

                            My blog/writeups/thoughts here at PE:
                            http://techtalk.parts-express.com/blog.php?u=4102

                            Comment


                            • #15
                              Re: Dayton ST-305 sims/thoughts

                              Originally posted by Taterworks View Post
                              Here's some inspiration, courtesy of UK manufacturer ATC (which manufactures both hi-fi and studio monitoring products):

                              ATC SCM100



                              The design uses a 3" ATC dome mid and a Seas Excel 1" soft-dome tweeter. The 12" ATC-built bass driver is a bit beefier than the Eminence-built Dayton Series II 12", but the Series II driver should be more than enough to compete, and could be combined with the Tang Band 3" dome mid for something similar to the ATC.

                              And for those days when you Just Want A Freakin' Fifteen Inch Woofer: SCM150

                              I think I have found the look of them. That is just plain ol' sexy, and still looks like a giant monkey coffin. It is a unique way of doubling up the baffle thickness too. I was originally thinking a harbeth-ish look with a frame that extends over to have a recessed grill like "back in the day", however with the setup I can still make a grill on a big frame for when not listening and they will have that look. Good find! FWIW, I love ATC products. I have only heard a few but they seem to get it right.

                              Originally posted by Wolf View Post
                              I still love the look of these:

                              http://www.atcloudspeakers.co.uk/el150a.php



                              Later,
                              Wolf
                              I like the "tronic" look of those. I wanted to combine some elements to make them look "hi-tech". Silver accents work well. Maybe spray-paint the ports silver with silver striping? I am thinking if veneering them with birch then dying it blue as a finish. That with the black baffle, blue tweed grill that PE sells... call them "the blues". Finally, some dang inspiration!

                              Wolf, you see anything you would do differently with my sim of the 305?

                              Should have gone with a 15....
                              .

                              Comment

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