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Trying to setup a beginner's HT in my daughter's room. Take a look at the picture of sketchup, inside dimensions for sub will be 16 1/2"X16 1/2"x10" height (volume: 1.575 ft3).

I will have to subtract the space for subwoofer amp, so maybe effective volume is 1.5.

Do not need massive bass at all, just augment the fullrange cyberg needle (DIY speaker) from 100Hz to maybe to 60Hz. Considering using Dayton SD215-88, 8" for <$30 and putting it in with Dayton 70W subwoofer amp, $70 at PE.
sub amp

subwoofer parameters: Specifications: *Power Handling: 80 watts RMS/120 watts max *VCdia: 1.5" *Le: 1.2 mH *Impedance: 8 ohms per coil *Re: 3.00 ohms *Frequency range: 30-2,000 Hz *Fs: 28 Hz *SPL: 89.0 dB 2.83V/1m *Vas: 1.40 cu. ft. *Qms: 3.40 *Qes: .47 *Qts: .41 *Xmax: 6 mm *Dimensions: Overall Diameter: 8-1/2", Cutout Diameter: 7-1/8", Mounting Depth: 4-1/4".

1. Do I have to make it vented? (have to cut a hole and put in a tube??, if yes what size etc.
2. is the combination reasonable for the low cost sub for a college kid?



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