One full-range 4.0 in treated fiber woofer with cloth surround. Easy-access five-position tap switch for 25-, 70.7-, 100-volt and transformer bypass position plus spring terminals allow for rapid ordering, stocking and installation. Engineered for installations with limited plenum space or retrofit applications. Reduced amplification costs and maximum efficiency with 88.5 dB sensitivity and 8 ohm impedance. Superior voice intelligibility with an average coverage angle of 110°. Fits standard 8-inch backcans for retrofits.

Specifications: RF41-20Mounting hardware included
System Type

4" Full range, in-ceiling, raw frame, sealed (20 Watt transformer for 25/70.7/100 Volt or voice coil direct)

Nominal Impedance8 ohm
Impedance (minimum)6.6 ohm
Sensitivity dB @ 2.83V/1M88.5dB
Sensitivity dB @ 1W/1M (2)88.5dB
Frequency Response (± 3 dB)155 Hz - 22 kHz
Frequency Response (±10 dB)71 Hz - 22 kHz
Max. Program Power40w
Max. Continuous Power RMS20w
Max. Power SPL @ 1 M101.5dB
Tap Selector5 Position rotary switch with transformer bypass
70.7 Volt Transformer Taps20w / 101.5dB
100 Volt Transformer Taps (dB)20w / 101.5dB
25 Volt Transformer Taps (dB)2.5w / 92.5dB
Transformer Options25 / 70.7 / 100 Volt option with a 8 Ohm direct - .31 W – 20 W
Transducer - Full-Range Driver4" Treated Fiber Cone w/ Cloth Surround
Port length3.75 in
InputsSpring terminals
Backcan Diameter209.8 mm / 8.25 in
Backcan Height62.5 mm / 2.46 in
Visible Diameter320 mm / 12.59 in
Visible Height6.4 mm / 0.25 in
Weight1.6 kg / 3.52 lb
Shipping Weight1.8 kg / 3.96 lb
Accessories OptionalGrill (AC-GRL-RF41 Available in 4-Pack only)
Packaging1 per box
Regulatory - ULnot planned
Regulatory - CEApproved
Regulatory - RoHSapproved
Regulatory - IPnot planned
Regulatory - CCCapproved