pioneer hpm-100's are they that great? help

[C-Karl-L]

You may be aware of this already but E-Bay will have at any given time, @ 5 pairs of tweeters up for bid. If you are patience, you can find your exact model (** that should be listed on the back of the magnet ) at a fair price.

** model number should look something like this ( example: 45-711B ), there are several different models of tweeters in the HPM line.

Hi thanks for you suggestion. My question is "What are differences among different models?" Could you please provide more information? I found my model number is 45-711A, Is this different from the model 45-711B? Thanks so much!