So, the most important marketing tool should be measuring frequency response in an anechoic chamber.. This means, once they are done designing a speaker to meet your measurement requirements, they are done with their design work. What could go wrong?
Should Speaker Manufactures provide a Frequency Response Graph?
Eric at Tekton Designs has been battling two different reviewers who have posted measurements without his permission, using Klippel devices for their respective measurements.
It seems to me that if manufactures provide a simple smoothed out graph, consumers can see how much a speaker is editorializing with a frequency response that deviates from neutral.