18" Subwoofers
Category Guide & Buying Information Fitment, power & selection tips
Shop Crystal Audio Solutions 18-inch subwoofers for high-output car-audio builds. Compare the available CAS models by RMS power, impedance, mounting dimensions and the enclosure requirements listed for each exact model.
Plan a CAS 18-Inch Subwoofer Build
- Enclosure space: Confirm model-specific airspace, tuning, cutout and mounting depth before building the box.
- Amplifier match: Choose power based on the subwoofer’s RMS rating and the final wired impedance.
- Electrical demand: High-output systems may require upgraded OFC wiring, fusing, battery capacity and alternator output.
Use the specifications on the individual Crystal Audio Solutions product page to plan the enclosure and electrical system around the exact 18-inch model you select.
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