Pyle Car Subwoofer Audio Speaker – 8in Non-Pressed Paper Cone, Black Plastic Basket, Dual Voice Coil 4 Ohm Impedance, 800 Watt Power and Foam Surround for Vehicle Stereo Sound System – PLPW8D

I hope this helps people who don’t quite understand the ins and outs of power and wiring your subwoofer.So I have to question those that make claims about them not being powerful enough or they blew up relatively quick. I think this comes down to not understanding,1. Your amplifier and RMS ratings2. How wiring the sub to your amp can cause impedance mismatches.One reviewer said his sub wasn’t loud enough. This makes me believe it’s wired in series, producing 8 ohms. Another reviewer says their amplifier is 2 Ohms. Well… If it is a mono block, 2 Ohms is good. If it is a 2 channel you bridged down to one channel, a 2 Ohms stable amplifier seeing a subwoofer wired down to 2 Ohms will either fry the sub, or fry the amplifier. I’ve seen this fry a voice coil in the sub and destroy filtering circuits in an amp. In this situation what happens is both channels split the load. Meaning you are showing each channel 1 ohm. In this case you would just use 1 voice coil @ 4 Ohms.Always check the resistance at the terminals to determine if you are wired correctly.On to the build. These are nice looking entry level subwoofers. Magnet looks good as well. The surround could have been a bit bigger. But hey, less than 60 dollars, can’t complain. The bucket is plastic, though it feels rigid enough. Nice spring clip terminals. Nothing fancy. Just a decent design.Power handling. Guys, never go off of max rating. Period. Go off the RMS numbers. If those aren’t listed, I use a formula for estimating an RMS value. Multiply price by 5.5. this would tell me the sub is at roughly 150 watts combinedSound is good and got better with about 45 minutes breaking in. It is not hitting super low frequencies. But thats ok, it’s just a 10″ sub. This is a great bang for the buck.Sensitivity is 90db at 1 watt/1 meter. This is at a specific frequency, I’m thinking somewhere around 50-55hz. So the lower tones, around 35hz have about a 4 db roll-off.In a good box, these should hit about 40hz fairly clean. They do start breaking up around 170hz. So those that want to match at higher frequency’s may be deterred from using this sub.