The speaker i returned played very low and muffeled. They seemed like factory sealed. I purchased brand new. I ordered a new pair of cables that will be delivered today to rule that out. I also returned the one speaker as defective.
In contrast to what KEW said there is an awful lot to go wrong if the designer is a complete moron as is obviously the case here.
You need to drop these speakers like a hot potato. The whole design concept is flawed and insane.
Now we have a lunatic who has presented a speaker with not just one crossover below 400 Hz but two. (100 Hz and 300 Hz)
Now I have designed speakers for years. I can tell you that there is no way you can make a safe speaker like that, let alone a decent one, with a passive crossover solution. I say that categorically, there is no way. I have to work with the same laws of nature as Polk. To even consider this, which is a bad idea anyway as the crossover points are too close together, you would need at least three amps with active crossovers.
Inevitably the stress on the receiver or power amp are going to be horrendous with passive crossovers with those specs.
There is a very high probability the crossover is actually in resonance, a very bad situation for amps driving them. However if you cobble together a contraption like that, you will be far too stupid to spot a detail like resonance.
Do not connect your receiver to a speaker like that. It will vastly shorten its life, if it has not already.
The cynic in me leaves to believe that now Polk and Denon Marantz are the same company, they are deliberately trying to boost the market for replacement receivers.
The is the most egregious concept for a speaker I have seen to date.