- Can I wire the R2-W8D4 to 2 ohms?
- Yes. The dual 4-ohm voice coils wire in parallel for a 2-ohm load or in series for 8 ohms. Match the final load to your amplifier's rating.
- How much power does it need?
- Alpine rates it at 350 W RMS, so an amplifier delivering roughly that into its final impedance is a good match. More headroom is fine if gains are set correctly.
- What size enclosure does it need?
- It is an 8-inch sub designed for small sealed or ported boxes. Follow Alpine's recommended enclosure volume and tuning for the R2-W8D4 rather than guessing.
- Is it a good upgrade over a stock sub?
- In a car with a weak factory sub, it adds noticeably tighter, louder bass without taking much space. It will not deliver the deep output of a 12-inch sub.
- Can I use it in a boat?
- No. Alpine does not rate this sub for marine use, so it is best kept in a car or truck.
- Where is the Alpine R2-W8D4 cheapest?
- At Best Buy, for $299.95, as of our latest check.
- Where can I buy the Alpine R2-W8D4?
- 2 stores we checked sell it, including Best Buy, Abt Electronics.