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As an old audiophile, uploading a pdf to steemit is my current downfall :D

Post updated with data. Kindly note, that frequency plot and impedance are measured in a box, whereas data like Fs are free air.

Now that's service, thanks. Are you manufacturing for another speaker manufacturer or are you also building them?

We supply dealers, private buyers and manufacturers as a parts supplier. We haven't made finished speakers since 2006.