Czech Martin wrote: > > I plan to build 8 closed enclosures (no vents, no recsonance modes) > and to drive the 8 speakers in parallel from resonance up to -say- 100 > Hz. > > Has anyone a better idea? Have you seen this? http://www.mpc.com.br/audioespresso/dicas/sub2/1.htm Edu Silva http://audiolist.cjb.net