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  1. Dennis_H

    Finally built a new sub (now whelmed)

    Think I'll work at outgrowing this one first, but $650 for a retrofit... May have to think about that in a couple years when my wife and family are gone again. I didn't tell my wife I changed this. I replaced an endtable that is kept covered up with a large tablecloth. I'll see how long it...
  2. Dennis_H

    Finally built a new sub (now whelmed)

    OK, the mods can change the thread title... I am now plenty whelmed :) I got home and changed the ports. Not too bad to cut them down, just had to find a way to join them again. A trip to Home Depot and that was fixed. Removed the driver and tie wrapped the wires. Put on new rope caulk to...
  3. Dennis_H

    Finally built a new sub (now whelmed)

    Part number is 300-793. Here is a link to the PDF file. http://www.partsexpress.com/pdf/300-793.pdf It is straight from the factory with no boost, but they don't say what the frequency cutoff is. I'm not sure how to tell from this. I guessed any rumble filter would be low enough when...
  4. Dennis_H

    Finally built a new sub (now whelmed)

    The reason it is so large is that it will be replacing an endtable that is the same size. I don't think that amp rolls off at 20 with the default resister values set to no bass boost. They list the values and I kind of interpolated that it should be a roll off under (what I thought was) the 18...
  5. Dennis_H

    Finally built a new sub (now whelmed)

    OK, I'm a little bit of an idiot. I knew everything went too smoothly. I used 3" diameter ports instead of 4". Looks like the tuning drops to about 13.5 or so, but it rolls off much earlier. I'm not home, but thinking back, the circumference was under 11" since I wrapped a piece of paper around...
  6. Dennis_H

    Finally built a new sub (now whelmed)

    I have a small sub amp that I may be able to hook up, but it's only about 40W or so at 4Ohm. I may be able to dig my son's receiver out of his room and give it a shot. It is wired with the voice coils in parallel. Actually they both go to a dual binding post block with the bridging bars in...
  7. Dennis_H

    Finally built a new sub (now whelmed)

    Yes, my initial listening was done 5 or 6 feet in front of the driver. Once I get the slap fixed, I'll move it to where it's supposed to sit and put it back with the driver on the bottom. I think I have about about 4500 cu ft volume in that room with big vaulted ceilings, so I know I am not...
  8. Dennis_H

    Finally built a new sub (now whelmed)

    The instruction sheet says it comes with no boost and has the values to change if you want some boost. I guess I don't know what SSF is... I did not apply any correction to the meter reading, so I know that the values should be somewhat higher on the low end. Used C-weighted, but that is...
  9. Dennis_H

    Finally built a new sub (now whelmed)

    I bought a Tempest several years back along with a PE 250 W plate amp (the one with the remote) with the intentions of building a great new sub. Didn't get to it until this weekend. Used WinISD and built a vented box that is close to 13.5 cu ft after driver and ports. I tuned it to around 18hz...
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