Can I use the underdrive pulleys if I have a high wattage stereo system?
Our underdrive pulleys are designed to allow for the addition of aftermarket stereo systems up to approximately 600 watts RMS. If the stereo system in question is above that wattage amount then the owner can purchase our stock diameter crank pulley will maintain the voltage output just like the stock crank pulley. Capacitors are a smart addition to any audion system as they store the power the amplifiers need for peak draw. Our stock diameter series used with capacitors allow the vehicle owner to achieve the cleanest and most powerful sound with no loss in voltage output. Another good option would be to install a second battery or batteries just for the stereo.