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- 8.5 inch bass-midrange for 2 or 3-way floorstanders
- medium sized voice coil with 38mm titanium voice coil former for high midrange resolution
- version with 11 Ohm impedance for tube amps or multiple parallel driver arrays
Vented box design parameters:
- Vb: 70L, Port diameter: 70mm, Length: 255mm, Fres: 23Hz, F-3dB: 30Hz, Q: 0.58 (optimal)
- Vb: 116L, Port diameter: 70mm, Length: 100mm, Fres: 25.5Hz, F-3dB: 24Hz, Q: 0.50 (extended bass)
- Vb: 58L, Port diameter: 70mm, Length: 235mm, Fres: 26Hz, F-3dB: 31Hz, Q: 0.61 (0.7dB Ripple @ 50Hz)
Closed Box design parameters:
- Vb: 39L, -4dB @ 40Hz, -18dB @ 20Hz, F-3dB: 43Hz, Q: 0.71 (typical)
- Vb: 116L, -4dB @ 40Hz, -11dB @ 20Hz, F-3dB: 45Hz, Q: 0.50 (extended bass)
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