Since my electronic engineering class this semester I have wanted to try building some decent speakers. I have no great knowledge of quality drivers, companies or acoustic design. I have been basing my driver decisions on manufacturer listed specs. From PartsExpress.com I am looking at these drivers in a 3-way array: (per speaker) DAYTON RS180-4 7" x2, DAYTON RS125-4 5" x1, and SELENIUM DH200E-E 1" with HM11-25 horn. I have no great reasoning for the Compression driver other than the Frequency range. Audibly I prefer tight deep bass with solid imaging in the mids and clear but not sharp or tinny highs (IE: I love how the Polk, Boston Acoustic, and Definitive Technology speakers Ive listened to sound). Any parts you would change? If so please give info for why. How would I go about getting the correct volume figured and choosing between porting or sealed cabinets? And where would you cut the high-pass and low-pass frequencies in the XO? Please inform me and thanks for your time!!