Matching car subwoofers to amplifiers: Impedance, the Rule of Twos, and finding the sweet spot
JR goes full deep-dive this month on a topic that's beenteased on this show more than once — how to match car subwoofers to amplifiers so your bass system performs the way it should. Huffy is here too, playing the role of someone who just wants great low end. The episode has two parts: if you just want the quick answers on which impedance subs tobuy for the most common setups, JR serves up the fish in the first few minutes. If you want to actually learn how to fish — understanding what impedance is, why two ohms is the sweet spot for most sub amps, and how series vs. parallel wiring affects what your amplifier sees — that's the rest of theshow. Along the way, JR introduces the "Rule of Twos," a simple memory tool for getting dual voice coil sub wiring right, and explains when you can safely go to one ohm versus when you probably shouldn't. The episode also covers powered subs and pre-loaded enclosed subs for anyone who'drather skip the math entirely — and no judgment there. Visual learners: here are some links to Crutchfield's subwoofer wiring diagrams and YouTube videos, because some of this stuff really does need a picture. Please send your follow-up questions (and pushback from your knowledgeable friends) to podcast@crutchfield.com. · Subwoofer wiring diagrams · What are dual voice coil subwoofers? · How to match subwoofers and amplifiers · How to wire multiple subs to your amplifier | Crutchfield · How to match amps and subs in your car | Crutchfield