ScanSpeak Classic 18W/4545-03 4 ohm 7" Paper Cone

ScanSpeak Classic 18W/4545-03 7" Paper Cone Mid Woofer - "New Version" -177mm- 5 ohm

Spec Sheet PDF

This is a 5 ohm version of the highly praised 18W/8545 midwoofer, with the new aluminum chassis, updated cone and a new spider. These updates improve mechanical stability and sound performance. High-quality magnet system design with patented Symmetric Drive (SD-1) continues to be a key feature. The ability to put this woofer in a small sealed enclosure makes it a good choice for autosound applications. This unit is an improved version of the highly praised 18W/8545-00 midwoofer, featuring a new aluminum chassis, an updated cone and a new spider as well as a few other details. These updates improve mechanical stability and sound performance. High-quality magnet system design with patented Symmetric Drive (SD-1) continues to be key feature.

Can be used for any 4 ohm application.

• Patented Symmetrical Drive Motor Design
• 42mm Voice Coil w. Alu foil
• Low Damping SBR Rubber Surround
• Coated Air Dried Paper/Carbon Fibre Cone
• Low-Loss linear suspension
• Aluminium Chassis

Box suggestions:

• 0.2 to 0.3 cubic foot sealed with 20% filling for an F3 of 90Hz, F6 of 66Hz
• In a vehicle, you will have cabin gain to push the F3 even lower.
• 0.4 cubic foot with 1.5" diameter vent by 6" long for an F3 of 52Hz
• 0.5 cubic foot with 1.5" diameter vent by 6" long for an F3 of 50Hz
• 0.6 cubic foot with 2" diameter vent by 7" long for an F3 of 43Hz

Good replacement for Wilson Audio speakers requiring a 4ohm 177mm midrange.