SB Acoustics SB23NRXS45-4, 8" Paper Cone Woofer

SB Acoustics SB23NRXS45-4 8" "Norex" Natural Paper Cone Woofer- 234mm- 4 ohm- 92 dB

Spec Sheet PDF

Low Q, good for medium sized vented box (some suggestions below). Shallow depth under 4".Could be used for Car Audio/ autosound.

This woofer has a proprietary composition paper cone made in-house and a rigid cast frame with ventilated spider and large vented pole piece. A low damping rubber surround ensures decent midrange reproduction. A shorting ring is used in the motor to reduce intermodulation distortion and improve inductance symmetry. The woofer has a large 1.75" diameter voice coil with 6.5mm x-max on a non-inductive fiberglass former. 234mm frame, 205mm cutout.

Special Features

• Soft low-damping rubber surround for improved transient response
• Shorting ring in-motor system for reduced distortion
• Vented pole piece for reduced compression
• Vented cast-aluminum chassis for optimum strength and low compression
• Shallow design (3-1/8" depth)
• Non-conducting fiberglass voice coil former for minimum damping
• CCAW voice coil for reduced moving mass
• Long-life silver lead-wire

Suggested Box Alignments

• 0.4 to 0.7 cubic foot sealed box for 3dB down of 70Hz, F6 of 51Hz
• 1.0 cubic foot vented box with 2" diameter vent by 4" long for F3 of 40Hz
• 1.25 cubic foot vented box with 2" diameter vent by 3.25" long (or 3" x 8.5") for F3 of 38Hz
• 1.5 cubic foot vented box with 2" diameter vent by 3" long (or 3" x 8") for F3 of 35Hz