99BlackSandv6 wrote:You should just run the amp in 2 channel, with one channel per voice coil. If you do that, both the amp and sub will be happy.
You really have no other option with that setup.
You'll have 170rms per coil, on the sub. That is a total of 340wrms. Which is perfect for the sub, since it is designed to handle 400wrms.
The resistance of the sub is the load on the amp. They are both the same. If the sub is 2Ω the load is 2Ω.
This is correct...with one exception. It is not the ONLY way to wire it. There are two other options and those options would be to wire at 2 ohm or 8 ohm. 2ohm is not an option due to the amp not being 2 ohm stable. The following set up would be an 8 ohm configuration. It involves bridging the amplifier and running the voice coils in series. This would result in about 250w per voice coil.
(Channel 1 +) to (Voice coil 1 +)
(Voice coil 1 -) to (Voice coil 2 +)
(Voice coil 2 -) to (Channel 2 -)
If I am reading how you have your set up now, it sounds like you are configured just as i typed above. Using this set up you will be drawing an 8ohm load. Maybe take a photo for us so we can confirm your set up. I would recommend switching up the wiring to how BlackSandV6 suggest. Just see which one your ears prefer! Both are safe!