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So, now I have tested my subs thoroughly. I moved them so that they are now on each corner of my room. Doing so greatly lowered the noise I was getting (mostly because there's a door on one corner). I also calibrated them, and they are now just 2 - 3 dB louder than my main speakers. I now...

Rory, thanks for your thoughts. I calibrated the sub 6 dB higher than the mains, and the crossover is running at 100 Hz. I'll definitely change its parameters tomorrow... The more I listen to them, the more I like them. There's no overhang, no undue port noise, no nothing... just lovely bass. :)

Well, our circumstances are limited enough for us to use said drivers :) The Tempest surely can produce a bit more db's out of a single driver. And the group delay I got from my sub (20 ms) is quite a bit higher than my AA Tempest... and I bet the Tempest's parameters are a lot better measured...

I bought these drivers on November, 2002... did I just set a record for the longest time in building a subwoofer? :b - What I tried to do: * Build a decent enough subwoofer with parts available in México City. That means no Adire, no Parts Express, no... well, you get the idea. - The...