OSPREY Loudspeaker system. Hand built in 2003. The impedance of the bass system is 8 ohms. Because there are no capacitors in the bass circuit the system is a much easier load to drive than most other 8 ohm systems. Owing to the excellent sensitivity of the system, amps with lower power ratings should perform extremely well. The OSPREY was designed to be compatible with tube amps. The OSPREY is a phase-aligned first order design. This means that the drivers are staggered back to achieve proper timing-this is the reason for the sloped baffle board. This arrangement combined with a 6 dB per octave crossover allows the OSPREY to reproduce the musical waveform faithfully. The OSPREY's bass loading is the next generation of transmission line loading called BASSIC for Impedance Coupled Bass. A rising acoustic impedance below resonance is the key to BASSIC design. You will enjoy superior extension, articulation and dynamics that sound more like music than conventional systems.The OSPREY incorporates "Double Decoupled" two inch thick baffle. The individual drivers are bedded on layer of Keldamp to impede any transfer of energy to the main enclosure. The spectacular sound staging achieved by this design is due, in part, to the inertness of the enclosures and the attention paid to controlling panel resonances. All internal wiring is Tara RSC. This elegantly engineered wire consists of multiples of oxygen free copper rectangular solid conductors in a polyethylene dielectric. Each crossover component is selected for sonic quality. The tweeter and midrange capacitors are AuriCaps. The woofer section consists of a single Perfect Lay 14 ga. air core inductor. Power resistors are Caddock metal oxides that are heats inked for thermal stability. All internal connections are point to point. The entire crossover is mounted outboard in an isolation chamber to reduce microphonics.