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  • Help deciding on Pair of small subs

    I am looking to build a pair of small subs for a 2nd home theater. By "small" I am thinking no larger than 14" cube. I'd like to spend less than $400 to $500 each on them. I have modeled a bunch of speakers and read many designs, including the Cerebus, a few SP10 builds, and a few other plans. So far I have not seemed to find one that really speaks to me. I like the idea a two subs to help fill in the gaps.

    I don't claim to know a lot about subs, but I keep thinking about the Sunfire True Jr. which is this tiny 9" cube with a 1200W amp and great big looking driver and PR. I keep looking around for a DIY build for something similar and can't seem to find it.

    So if someone can point out some hard hitting, for their size, builds, that are overwhelmingly satisfied (and within the "small" size realm), could you please point them out?

    I have a big sub for the hard hitting movies, so this HT build, along with some Overnight Sensations are looking to take a secondary HT role in the house.

  • #2
    Re: Help deciding on Pair of small subs

    How about one of Paul C's designs for the RSS210HF?

    http://techtalk.parts-express.com/sh...light=rss210hf

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    • #3
      Re: Help deciding on Pair of small subs

      A 14" cube with the 10" Titanic and the Yung 500 watt w/boost amp looks pretty good.
      http://jaysspeakerpage.weebly.com/

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      • #4
        Re: Help deciding on Pair of small subs

        A pair of the RSS315 HO-44 would be a perfect match sealed. You could run the pair from one amp with the drivers in parallel and maintain a 4ohm load. The Yung 500w amp with boost should give you nice response to 20hz or so and kick like a mule.

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        • #5
          Re: Help deciding on Pair of small subs

          I like the EPIC line but have not tried them, how about the 10":
          http://www.parts-express.com/pe/show...r=293-656&FTR=

          It's a big driver you'll have to check for fit all around.

          I'd go with 500W, some boost as needed and a long throw 12" PRs such as the ones from CSS:
          http://techtalk.parts-express.com/sh...d.php?t=209863

          See if you can find out how much dynamic headroom the amps have, and for how long when you go looking for one.

          You get more volume diplacement (VD) per dollar going to a bigger driver.

          Auto sound subs also offer very high value.

          A pair of these per side might work well sealed since the pair offer a lot of VD
          and power handling since they share the power. Their parameters are not ideal for a
          sealed system. Model it to see how they do, they will require EQ for deep extension:
          http://www.bestbuy.com/site/Infinity...&skuId=9896963

          Specs:
          http://www.crutchfield.com/S-4PidMI8...ml#details-tab

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          • #6
            Re: Help deciding on Pair of small subs

            I am liking what I see so far. One concern is that if all the advice I have gotten so far is for a home theater usage, versus for use in auto world. The Turtle looks impressive in WinISD. Has anyone built this in the past?

            Also the RSS315 HO-44 looks good as well, but all the reviewers were in the car audio world. Can this be used well in a home theater environment?

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            • #7
              Re: Help deciding on Pair of small subs

              Going out on a limb here - do you have any vertical room to work with? I'm currently looking at the Anarchy Tapped Horn for my brother's HT - he needs it relatively small, but can handle some length & height. The Anarchy TH is 8.25" W x 30" H x 20.125" L and can go down to 25 Hz. Here's a picture of radman12's TH in the corner (unfinished) - a bit slimmer than what your requirements are, but more height & depth:



              There's a flat pack for $75 here:

              http://www.diysoundgroup.com/flat-pa...narchy-th.html

              And the sub (Exodus EX-Anarchy Midwoofer) is $69:

              http://www.diycable.com/main/product...roducts_id=538

              Dayton 250w plate amp for $120:

              http://www.parts-express.com/pe/show...number=300-803

              So $264 plus shipping/finishing costs. It looks like an interesting project if you are tight on space, but have a wall or corner to work with.

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              • #8
                Re: Help deciding on Pair of small subs

                Originally posted by samdee View Post
                I am liking what I see so far. One concern is that if all the advice I have gotten so far is for a home theater usage, versus for use in auto world. The Turtle looks impressive in WinISD. Has anyone built this in the past?

                Also the RSS315 HO-44 looks good as well, but all the reviewers were in the car audio world. Can this be used well in a home theater environment?
                Car....home.....Pro......In the case of subs, the anechoic response dictates the ideal use and in the case of the 44's, they extend very low in a small box and are fairly efficient as far as subs go so home audio is an ideal application with the low extension lending itself towards HT. With a larger, ported enclosure the results get even better.....and lower.

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                • #9
                  Re: Help deciding on Pair of small subs

                  Originally posted by samdee View Post
                  I don't claim to know a lot about subs, but I keep thinking about the Sunfire True Jr. which is this tiny 9" cube with a 1200W amp and great big looking driver and PR. I keep looking around for a DIY build for something similar and can't seem to find it.
                  The Sunfire is cute and all, but it SOUNDS like a small driver working very hard (my buddy had one for a while). A driver with big surface area and a driver with small surface area sound different to me, even if the small one has enough excursion to play loudly. There's just not much chest thump.

                  It's visually impressive, though. For sheer output, yeah, it does fight above its weight class. The Sunfire uses something very similar to a Linkwitz transform. Long story short, they EQ the hell out of it to prop up the bottom end. That's why it's so power hungry. Hoffman's iron law says "small, low or loud; pick two". In the case of the Sunfire, they went for small & low, and efficiency be damned.

                  Nobody's asked the size of your room yet. How big of a space are you looking to fill?
                  nothing can stop me now

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                  • #10
                    Re: Help deciding on Pair of small subs

                    Dirk,

                    Good question about the room size and I appreciate the insight into the Sunfire Jr.

                    The room size is, like many houses, difficult to say as it is a living room that is "open" to the rest of the house. I have a smaller room with my big sub, but this one is hard to say. Open floor plan, so maybe 1600sq ft. A big space for any sub. I do plan on building two subs, corner loaded, but I can't expect much, so I am not anticipating chest thumps here.

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                    • #11
                      Re: Help deciding on Pair of small subs

                      The Infinity Reference 1260W (4 Ohm single voice coil) or the 1262W (2/8 ohm dual 4 Ohm voice coils).

                      1.2 cubic foot to start (Music) or ~ 2.5 cubic feet (both sealed) for HT.

                      Or this ported design.

                      If you have Amazon Prime you can get the 12XXw for around $55 shipped.

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