No bass from monitor 10

I have been having trouble with one of my monitor 10s. I just replaced one of the mid drivers, i press on the passive and the mids move outward, couple of seconds to return to normal resting place. I turn it on and i get no bass. When i listen to the good speaker i can hear decent amount of bass coming from the mids but on my other one there is almost none. The passive puts out zero bass right now. Is this a crossover issue? If so, what value resistor/cap would i need to replace?

Thanks

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