Driver Complement    

One High-Gauss High-Velocity Folded Ribbon AMT TweeteR

Two 5.25" (13.33cm) High-Definition Cast-Basket Multi-Vaned Phase Plug (MVPP) Mid/Bass Drivers

Two 5.25" (13.33cm) High-Definition Cast-Basket Lower Mid/Bass Drivers
Efficiency     92dB 1W/1M @ 4Ω (2.83V/1M)
Frequency Response     34Hz–25kHz typical (-6dB on axis @ 67Hz, anechoic bass response)
Nominal Impedance     4Ω
Recommended Amplification     20 - 350Wpc
Dimensions    

Speaker: : 27.6" (70cm) H x 8" (20.2cm) W x 3.2" (8.25cm) D; with optional back box 3.75" (9.5cm)

Square Grille: 28.3" (71.59cm) H x 8.06" (21.74cm) W

Round Grille: n/a

Cutout: 26.55" (67.43cm) x 7.14" (18.25cm)
Weight     Product: 14lbs (6.4kg); Shipping: 17lbs (7.7kg)