Hey, I am new here. Need some help. I want to build a sub for music only. I am looking at either a Shiva 12" driver or Stryke Audio 12" AV-12. The AV-12 is the same driver SVS uses, that is a big plus to the Shiva which has a foam surround and just looks to not be as good of quality. Is this a good assumption? Now. I want to make a sub that is small enough but will still give out great output. I have chosen the SonoSub design because it has such a small foot print. Is there a better design I should look at? Can someone point me to a design that is about 30 inches or so tall? I want it to be about the size of my Klipsch Heresy's but bigger is just fine. Here comes another question. My receiver is a vintage one, so it does not have a subwoofer output. Can I use the tape out into the amp's stereo input? This is a parts express amp, same as the adire audio and stryke audio 250W amp, this one has a remote controled crossover and volume. So, could I take the tape out from the receiver and go into the stereo in on the amp, set the crossover to whatever (what would you suggest? heresy's stop around 60Hz). Would that work? My receiver is a vintage Harman Kardon HK430. It has a button on it called Low Cut. It is obvious what this does, so could I not hit Low Cut and it would cut out the low frequencies to the sepakers so i would not get distortion when I turn it up becaues now I would have a subwoofer? Is this all making sense? Thanks for all the help. Stryke AV-12 VS Adire Shiva Stryke AV12 T/S Fs: 21Hz Qms: 4.41 Qes: .399 Qts: .366 Vas: 88 L Re: 2.97 ohm Z: 4 ohm BL: 15 Tm Cms: .25 mm/N Mms: 228 g Pe: 500W 1W/1m: 85.5dB 2.83V: 89.5dB Xmax: 23 mm Xsus: 30 mm Sd: 498 sq cm Vd: 2.33 L Shiva Shiva features: - 650W power rating - Dual 8 ohm voice coils - 15.4mm linear magnetic excursion, one way (over 1.2" peak to peak, linear!) - 22.3mm linear suspension travel, one way (over 1.75" peak to peak) - 26mm maximum one-way excursion (over 2" peak to peak) - Recommended enclosures start at 26 liters - less than 1 cubic foot - Suited for sealed, vented, bandpass, and PR based systems Once again, thanks.