Now you guys know why the dot com bubble burst. All these companies operated on investor income with no profits whatsoever. Sure, they were practically giving away product, but in the process gave away the farm. If you were invested in the stock market, have a 401-K or stock options as part of...
I power my 122L sealed Tempest with a 20 year old H/K integrated amp rated at, I think, 65watts RMS into 8ohms. Now, when I bought it they put it on a test bench and tested it out at 90watts at .5 THD per channel into 8 ohms. In my room (19x19x8) I haven't come close to maxing this out. Now, I...
CSC in Canada offers several complete sub kits using the Tempest and other Adire drivers at very reasonable prices. Their EZsub21TDT looks to be the 122L sealed alignment with the Tempest and their 300 Watt (4ohm) plate amp for $519 US shipped. Check it out at...
Your perception of the loudness of bass frequencies also starts to drop dramatically below 60hz. IOW, the lower you go the more SPLs are required for you to perceive the sound as the same "loudness". Of course, as pointed out above, the fact that you have a peak at 35-45hz probably exacerbates...
Andrew, make sure you check out Adire's designs for their various subs. The Shiva may be a good compromise between performance and size and they already have proven alignments (designs) available that make building them quite painless. Even the 122L Tempest takes up a good bit of space. A 22"...
Ah, what a can of worms. ;) Some (Danny included) will argue vociferously about the audible distinctions in "high quality" (read "expensive") crossover components, including the virtues of foil vs. wire inductors. Others (Rod Elliot, for example) will argue just as vociferously the opposite. My...
Well, from what I can ascertain, the BP8 uses two 14cm drivers, which translates into 5.5 inches. BTW, PE has these drivers for $8.90 now. Not as good as the earlier $6 price, but still not bad for someone wanting to do a bargain MTM design. I would think the Dayton 1 1/8 inch tweeter would...
For a dissenting voice (;) ), I built the 122L sealed alignment. As I mentioned in another thread, even though I probably watch movies and TV more than listen to music (kids), my priorities were musical accuracy and the ability to more easily integrate with ported main speakers. Determine your...
Well, I have the 122l sealed Tempest. As you'll notice from my sig, I have it equalized with a BFD. For music I run a flat curve. For movies I use a curve with more of a "hump" in the 35hz range (for my room that meant simply not attenuating a dip as much as in the music filters). Though I...
Yep, subsonic frequencies played at even moderately loud levels can start to make you sick. When I was testing my sub, anything below 23 hz played so I could actually hear it would, after a few seconds, start of affect me.
What I meant by "acoustical power" is, if the amps are well built and stable, the "loudness" to which they'll be able to drive comparable 8 ohm or 4 ohm loads will be the same. IOW, 400 watts into 8 ohms is basically the same as 800 watts into 4 ohms. He won't be "missing out" on any power if...
I haven't heard the Axiom or Rockets, but for $800 to $1000, a well designed DIY sub will simply destroy anything commercial up to three or four times the price. I built my Tempest for about $220 (I use an old integrated AMP to power it) and another $117 for the BFD (-3db at 20hz). For what...