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Harmonious Table Radio Subwoofer

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  • Harmonious Table Radio Subwoofer

    I have a friend at work who (I think) needs a small sound system. I decided to create a 2.1 system for her since I haven’t done a table radio with that arrangement. I’ve decided on the Peerless TC9 3.5 inch Full-Range driver for the stereo drivers based on good reviews from you guys here at Tech Talk.

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    For the subwoofer, I chose the Peerless SLS-P830945 5-1/4” subwoofer driver. It works well in a small enclosure and digs down into the 40 Hz range at a satisfying enough volume. It’s just under $40 at this time, and is shouldn’t sag excessively in my down-firing configuration. I’ve used this driver before in my “Summer Winds” speaker system from a few years back. It’s a little beast to be honest!

    After some fiddling around in WinISD, I came up with a 7” x 7” x 14” tall enclosure with a 2” x 14” vent. I used ½” MDF for the enclosure and there is an internal brace that also holds the vent tube (ABS plastic) in place.


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    I used miter joints on the sides and top but just recessed the bottom to make life easy as it was the same size as the brace. I clamped it up with blue painters tape.

    The vent is 14” long – the same length as the enclosure – so I used an elbow to get the required length. Home Depot had two elbows available, I chose the one with the larger radius. The vent exits near the top of the enclosure on the back and is a bit over 2” from the rear of the driver when mounted.

    I built two of these which I veneered with White Birch, and Lacewood veneers. For the Birch, I ended up using rub-on Polyurethane. I applied a few coats of Minwax just to get the veneer sealed up since it’s very thin and dries so fast, then I hit it with a few coats of thicker General Finishes rub-on poly to build a bit of depth, followed up by a few final coats of the Minwax.
    For the Lacewood veneer, I first applied boiled linseed oil, followed by a few sanding sealer coats. Then I filled the grain with Crystalac grain filler to get it smooth, which I followed up with a few more coats of the sealer. Then I applied clear lacquer for the final finish. The Birch is super-smooth on it’s own, but the Lacewood had lots of grain openings in various sizes due to the nature of the wood, so I thought filling the grain would look nice for that.

    Finally, I used some nickel cabinet drawer handles for the feet – a trick I’ve used before on my little ND105 subwoofer build. This project ended up looking almost exactly like that one as luck would have it – I didn’t intend for that to be the case, but it’s just how it panned out.

    Anyway, I have a video on the construction of this on Youtube. Applying the finish to the cabinets will be ‘Part 3’ and should be up in October I think if anyone is interested.

    In this ‘build video’ I also show a few of the ‘boo-boo’s’ where things don’t go exactly as planned, and how to deal with them. I always have a few of those it seems.


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    I’ve played sine sweeps and music through this setup and while I do hear audible chuffing from the vent with the sine sweeps, Music is fairly quiet chuffing-wise – only when I’m pushing the sub too far anyway does it start to chuff for the most part.
    I’ll hold off on saying too much on how it sounds until I can get a few more hours of listening under my belt… for now I’ll just say that I’m impressed. This Peerless driver performs similar to the Tang Band W5-1138 driver and may just have the edge in a few categories.


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    It’s a simple subwoofer build – It won’t shake the walls – but it really does a nice job filling in the low end for smaller speakers. Here is the link to the construction video on YouTube if you're so inclined: https://youtu.be/hsgkD7EOBS4 It should be ready to view shortly if it isn't quite ready yet.

    This will be powered with a 2.1 amplifier housed in the radio portion…eventually. I’ll be working on the radio over the next few months and hope to have it completed by the end of the year, Lord willing. I'm moving a little slower these days.

    Thanks for looking!
    TomZ
    Last edited by tomzarbo; 09-11-2021, 11:13 AM. Reason: Added link to vid
    Zarbo Audio Projects Youtube Channel: https://www.youtube.com/channel/UCEZ...aFQSTl6NdOwgxQ * 320-641 Amp Review Youtube: https://youtu.be/ugjfcI5p6m0 *Veneering curves, seams, using heat-lock iron on method *Trimming veneer & tips *Curved Sides glue-up video
    *Part 2 *Gluing multiple curved laminations of HDF

  • #2
    I've wondered about those many a time, and really like Peerless drivers.

    Can we get a shot of the bottom after finished?
    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


    • #3
      Here are some pics of the underside...

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      I sanded the bottom of the cabinet and just painted on some Rustoleum Painters Choice to cover up the naked MDF like I normally do.

      ...and here is a quick little 1-minute video of it in action if you'd like to see the driver in motion: https://www.youtube.com/watch?v=XDF5PgauyNI

      I was a bit surprised when I really got it cranking... I wasn't expecting quite that much movement out of it. I used my 4k camera to film this, but it didn't do a great job of capturing the actual cone movement. I'll use my other camera to do a better 'cone movement' video for the finishing video.

      Listening to some music last night for an hour or so in my family room/kitchen and it provided a solid bottom end to the Bantam speakers I now use.
      I'm hoping to get a good quality recording/video of the setup in action for the final video. I may include a little inset video of a close-up "Woofer-Cam" or something like that.

      TomZ
      Zarbo Audio Projects Youtube Channel: https://www.youtube.com/channel/UCEZ...aFQSTl6NdOwgxQ * 320-641 Amp Review Youtube: https://youtu.be/ugjfcI5p6m0 *Veneering curves, seams, using heat-lock iron on method *Trimming veneer & tips *Curved Sides glue-up video
      *Part 2 *Gluing multiple curved laminations of HDF

      Comment


      • #4
        With that voice you really ought to apply to a radio station
        It is estimated that one percent of the general population are psychopaths - New Criminologist: Understanding Psychopaths

        Comment


        • #5
          Originally posted by mattk View Post
          With that voice you really ought to apply to a radio station
          Thanks, Matt.
          Do they still have those?
          Oh yeah, Sirius/Xm.

          I do still listen to a few FM stations in the car and when I'm working outside on some project on my Radio Shack transistor radio.

          TomZ
          Zarbo Audio Projects Youtube Channel: https://www.youtube.com/channel/UCEZ...aFQSTl6NdOwgxQ * 320-641 Amp Review Youtube: https://youtu.be/ugjfcI5p6m0 *Veneering curves, seams, using heat-lock iron on method *Trimming veneer & tips *Curved Sides glue-up video
          *Part 2 *Gluing multiple curved laminations of HDF

          Comment


          • #6
            Nice work as always Tom. I always go through your posts thinking " maybe I should do something like that" I don't necessarily need it, but it inspires nonetheless.

            Comment


            • #7
              That peerless line of woofers/subwoofers is an incredible value for those looking to really fill the low end but not bloat. I've used the 5.25" through 8" and they all are amazing performers.

              Well executedbas always tom.
              Builds - C-Killa - Speedsters - LithMTM - Talking Sticks - Pocket Rockets - Khanspires - Dayton RS Center - RS225/28A - Kairos - Adelphos - SEOS TD12X - Dayton 8 - Needles - 871S - eD6c - Overnight Sensations - Tritrix (ported) - Lineup F4 - Stentorians - The Cheapies - Tub Thumpers - Barbells - Tuba HT - Numerous subwoofers - probably missing a few...... :p

              Comment


              • #8
                One question- Tom, did you epoxy the drawer-pulls in a hole, or use the included screws from the backside? Just curious how you mounted them.
                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


                • #9
                  Thanks Jake and Joey.

                  Because the feet were so close to the outside of the cabinet, I couldn't tighten it from behind as you normally would. I used epoxy like you said. I set them on my cast iron table saw top to be sure they were flat when the epoxy cured.

                  TomZ
                  Zarbo Audio Projects Youtube Channel: https://www.youtube.com/channel/UCEZ...aFQSTl6NdOwgxQ * 320-641 Amp Review Youtube: https://youtu.be/ugjfcI5p6m0 *Veneering curves, seams, using heat-lock iron on method *Trimming veneer & tips *Curved Sides glue-up video
                  *Part 2 *Gluing multiple curved laminations of HDF

                  Comment


                  • #10
                    Really good video; I'm looking forward to part 3 on the finishing.

                    Comment


                    • #11
                      Very nice. I hope the recipients of your work appreciate what they've been given.

                      Comment


                      • #12
                        Originally posted by invaderzim View Post
                        Really good video; I'm looking forward to part 3 on the finishing.
                        Thanks for the feedback! I appreciate it.

                        Originally posted by djg View Post
                        Very nice. I hope the recipients of your work appreciate what they've been given.
                        You never know if someone will like a music playing machine or if they would just prefer earbuds. I hope she likes it too. And I hope I don't blow the woofer before I give it to her.

                        TomZ
                        Zarbo Audio Projects Youtube Channel: https://www.youtube.com/channel/UCEZ...aFQSTl6NdOwgxQ * 320-641 Amp Review Youtube: https://youtu.be/ugjfcI5p6m0 *Veneering curves, seams, using heat-lock iron on method *Trimming veneer & tips *Curved Sides glue-up video
                        *Part 2 *Gluing multiple curved laminations of HDF

                        Comment


                        • #13
                          Nice work, Tom. I like the drawer pull bar for stands idea. I do prefer the "aligned with the driver flats" orientation.

                          Comment

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