Highly unlikely the speaker caused the problem unless the crossover/caps were out of spec to the point the impedance of the speaker dropped to 1 ohm or less, essentially shorting out the channel in question.
This looks like a boutique or DIY type solid state amp? I'm not familiar with the model. Either way does the amp have overload protection in the topology to protect the amp from the conditions mentioned.
Ed
This looks like a boutique or DIY type solid state amp? I'm not familiar with the model. Either way does the amp have overload protection in the topology to protect the amp from the conditions mentioned.
Ed