Mark K's Speaker Pages

...when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind; it may be the beginning of knowledge, but you have scarcely in your thoughts advanced to the state of Science...Lord Kelvin


Tang Band 75-1558SE 3" midrange dome

 

Compared to the venerable Dayton RS52. As such, you can relatively compare these to the other midrange curves.

Impedance data

TB75 impedance curves

 

 

Frequency response

TB75 on axis FR

Off axis family unit 1 and 2.

TB75 unit 1 FR off axis family

 

TB75 FR off axis family unit 2

 

 

Nonlinear distortion data

TB75 nonlinear 3 tone at 400 Hz

Now, it looks like the TB has more second order and less of everything else. Actually, there is just barely more second order. If I flip the graphs, so the RS52 is in the black, you get the following. The excess red represents the TB75 extra distortion. You don't see red anywhere else because the TB is better everywhere else.

RS52 nonlinear 3 tone at 400

 

 

Now, back to a series of graphs where the TB75 is the black curve.

 

Comments

Thanks to Pete S for the chance to test these. Very nicely built and heavy units. If you can live with the frequency curve and less sensitivity (praxis normalizes the spl to 1 volt, so add about 9dB to the curve to get the sensitivity at 2.83 v.

No doubt the nonlinear distortion is markedly better than the other domes. Not exactly news as the Sd is twice a typical 2" dome. This seems more optimally used ~500 hz to 2k or thereabouts. Good luck Pete!