SB Acoustics woofers have a unique driver code system, we have put together this table as a quick reference guide.
| CACS | Ceramic cone, vented cast alloy chassis, shallow profile design. |
| NRX | Norex cone, high airflow cast alloy chassis. |
| NRXL | Norex cone, high airflow cast alloy chassis, large motor system. |
| NRXS | Norex cone, high airflow cast alloy chassis, shallow profile design. |
| PFCR | Paper / pulp cone, vented reinforced polymer plastic chassis. |
| NBAC | Aluminium cone (black), high airflow cast alloy chassis. |
Using the above chart we can find the details for the following example: SB23NRXS45-8 = SB 23 (chassis size, cm) NRX (cone / chassis type) 45 (voice coil diameter, mm) 8 (ohms impedance).
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