I e-mailed the owner of Ficar audio and got a reply 1 day later. Nice dude. He explained a few things about Le and shorting rings that i'll never forget
Last I heard he was still trying to get his website complete with T/S parameters
Woah, looks like the T/s are up now.
Looks like the Q 18 wants to see a much larger box than a single Tc-3000 or Rl-p 15. 700 liters tuned to 15hz looks good for the Q 18...I wouldn't bother going sealed with such large box requirements...guess its the high Qts?
you can get close to the same output with the Rl-P 15 in a 400 liter box tuned to 15hz. Of course you have the cone area advantage of the 18" over the 15" Rl-P...But an 18" rl-p is in the works...