Carver Woofer Operating Principle
High sound pressure is required for achieving a rich bass. The Carver woofers (low-range speakers) produce this sound pressure with their small diameter by increasing the displacement of the diaphragm. The sound pressure is produced by movement in the volume of air.
The volume of air moved is derived from the diaphragm area multiplied by the displacement. To achieve this, the largest possible diaphragm area (diameter of the speaker) was used in conjunction with relatively low displacement (approx. 3-10 mm). A matching resonance volume is additionally required.
In vehicle construction applications, this technology leads to a conflict between vehicle design and vehicle equipment: Due to the design and comprehensive level of equipment, there is little package space available for large bass speakers.
Carver technology represents a new approach in solving this problem. Thanks to Carver technology, a high sound pressure is produced with a small speaker diameter by increasing the diaphragm displacement (approx. 30 mm).
Due to the greater diaphragm displacement Carver woofers (low-range speakers) require a higher voltage supply than conventional speakers.
It is not possible to operate Carver speakers with the amplifiers (radio output stages 6 Vrms) previously used.