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Re: High Frequency Compression Driver EvaluationMike,I compared the N/DYM1 to the DH1A about 20 years ago, as the specs show it had slightly smoother response and slightly less 3rd harmonic distortion than the DH1A.I have not tried any other diaphragms in the DH1A.Your observation about some diaphragms lacking foam fill would certainly explain a difference in sound.Also, certain types of foam break down over time, a pile of foam dust in the bottom of the diaphragm would sound different than a 1/4" foam cover on the compression chamber.Art
Re: High Frequency Compression Driver Evaluation
Mike,
I compared the N/DYM1 to the DH1A about 20 years ago, as the specs show it had slightly smoother response and slightly less 3rd harmonic distortion than the DH1A.
I have not tried any other diaphragms in the DH1A.
Your observation about some diaphragms lacking foam fill would certainly explain a difference in sound.
Also, certain types of foam break down over time, a pile of foam dust in the bottom of the diaphragm would sound different than a 1/4" foam cover on the compression chamber.
Art
