Prodigy Audio NB2-8D4 8" 300 Watt RMS Dual 4 Ohm Subwoofer full range amplifier Prodigy lists the BT1 as

Prodigy lists the BT1 as being sold as a pair

Optimized Impedance

Average build time is approximately 2–4 weeks

Temperature range: 14°F–140°F – Built to perform in real-world climates

180-325 amp alternator for Nissan 4 cylinder engines with the 3 pin plug

Prodigy Audio NB2-8D4 8" 300 Watt RMS Dual 4 Ohm Subwoofer full range amplifier Prodigy lists the BT1 asProdigy Audio NB2 8D4 8" 300 Watt RMS Dual 4 Ohm Subwoofer is a compact entry level woofer built for shoppers who want clean, controlled bass in a smaller size without giving up the features that help a sub last and perform well. Sold by AudioSellerz. com, this 8" Prodigy Audio subwoofer is part of the NB2 Series, which Prodigy describes as a first level subwoofer line with features normally found in higher end products. For the 8" model, Prodigy