looks like a 32 to me. China made sticker removed means it's custom ? I do question everything. Like walking outta your financial advisors office he/she says " I could be wrong" .... I have reached out. 
Since you bought them used, you are not likely to know about the components used in our designs. The tweeter is based on the Peerless DA32 chassis, but has a number of modifications to extend its bandwidth and power handling.
As with any product issue, you should contact the factory directly for support at support@spatialaudiolab.com, rather than making a forum topic of it. We back up our products 100%, so we are happy to take care of any problems.
Thanks,
Clayton Shaw
Spatial Audio Lab