SeriesR Series
Nominal Impedance4Ω
Sensitivity (2.83V/1m)89dB
Frequency Response (±6 dB) open-backed40 - 28kHz
Frequency Range (-10 dB)32 - 45kHz
Nominal Coverage (degrees)150°
Crossover Frequency640Hz, 2.6kHz
Drive UnitsLF: 4 x 160mm (6.5in.)
MF: 160mm (6.5in.) Uni-Q
HF: 25mm (1in.) vented aluminium dome with Metamaterial Absorption Technology1
Recommended Amplifier Power50 - 350 W
Recommended High-pass Filter (Hz)35Hz - 80Hz
Product External Dimensions (H X W X D)1070 x 230 x 105.7mm (42.13 x 9.06 x 4.16in.)
Cut-out Dimensions (H X W)1052 x 209mm (41.42 x 8.23in.)
Net Weight18.7kg (41.1lbs.)
Mounting Depth From Surface99mm (3.9in.)
Optional Rough In FrameRIF5160L
Max SPL (dB)110dB
CertificationTHX® Certified Ultra
Wall Thickness (Maximum)40mm (1.58in.)
Wall Thickness (Minimum)6mm (0.24in.)
Remarks1 Metamaterial Absorption Technology is a joint development with Acoustic Metamaterials Group.
KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE. THX, the THX logo, and Ultra are trademarks of THX Ltd. THX and the THX logo are registered in the U.S. and other jurisdictions.
All rights reserved.