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Amazon.com: Alpine 2 Type-R R2-W12D2 12" 750w RMS Car Subwoofers+Mono Amplifier+Amp Kit : Electronics
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Amazon.com: Alpine R2-W8D2 Next-Gen 8-inch R-Series Subwoofer with Dual 2-Ohm Voice Coils : Electronics
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Amazon.com: Alpine 2 Type-R R2-W12D2 12" 750w RMS Car Subwoofers+Mono Amplifier+Amp Kit : Electronics
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Alpine Halo R2-Series Dual 12" Voice Coil 4-Ohm Loaded Subwoofer Enclosure Black R2-SB12V - Best Buy
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Amazon.com: Alpine R2-SB12V Loaded 12" 750w R-W12D4 Subwoofer+Ported Sub Enclosure Box Bundle with Rockville dB13 3000 Watt Peak/750w RMS Mono 2 Ohm Car Amp and RWK41 4 Gauge Car Amp Wiring Kit (
![Brand new alpine subs sound extremely quiet. The amp is very small but was powering similar watts subs much louder at the same output level. I'm breaking them in but I feel Brand new alpine subs sound extremely quiet. The amp is very small but was powering similar watts subs much louder at the same output level. I'm breaking them in but I feel](https://i.redd.it/nyh7iphh46e61.jpg)
Brand new alpine subs sound extremely quiet. The amp is very small but was powering similar watts subs much louder at the same output level. I'm breaking them in but I feel
![Amazon.com: (2) Alpine W10S4 10" 1500 Watt Peak 500 Watt RMS 4-Ohm Car Audio Subwoofers Subs : Electronics Amazon.com: (2) Alpine W10S4 10" 1500 Watt Peak 500 Watt RMS 4-Ohm Car Audio Subwoofers Subs : Electronics](https://m.media-amazon.com/images/I/71yYce7t+yL.jpg)