Poly cone vs poly dome

[mr_RBG]

As I understand Infinity used poly dome mid drivers in RS speakers from '82-'86 era. So was it a step forward after poly cone before they moved to EMIN?

 

[Tedrick]

That's a matter of personal test, but for me, the answer is yes. I think the radiation pattern of the dome mids contributed to better imaging and soundstaging.

 

[mr_RBG]

Yes, probably, and on music too. On some rock songs it seems that it is not enough mids(missing some guitar notes).

 

[crazyjeeper]

The cone mids tend to have a more punchy midrange that is more concentrated while the domes will have good dispersion but not the same forwardness.

I haven't heard EMIMs, so I can't comment on them, but in the cones v. domes, right now I prefer cones but that is just because I tend to like heavier music and want that punchy forward midrange.

I think it was more of a personal preference thing if you wanted domes over cones rather than any dramatic sonic improvement.

 

[Tedrick]

To this discussion, I'll add that, in my opinion, the Polydomes are faster sounding and more articulate than a cone mid, which makes them a better match with the EMIT tweeter.

The cone mids tend to have a more punchy midrange that is more concentrated while the domes will have good dispersion but not the same forwardness.

I haven't heard EMIMs, so I can't comment on them, but in the cones v. domes, right now I prefer cones but that is just because I tend to like heavier music and want that punchy forward midrange.

I think it was more of a personal preference thing if you wanted domes over cones rather than any dramatic sonic improvement.

I own the speakers in my avatar (RS-IIb's and RS-IIIb's), so I can offer my observations on EMIM vs. Polydome mids. While I enjoy the Polydomes in my RS-IIIb's, the EMIM's are better than the Polydomes in just about every way. The EMIM's are faster, more delicate, more detailed, more articulate, have more air, and throw a larger soundstage than the Polydomes.

 

[ohhwell]

yup, i will echo what everyone else said. the domes have more dispersion and sound more open. of course, that is not what everyone wants.

 

[mr_RBG]

Thank you for so colorful explanation!

The EMIM's are faster, more delicate, more detailed, more articulate, have more air, and throw a larger soundstage than the Polydomes.

Some day I will... some day...

 

[CDELON]

The cone mids tend to have a more punchy midrange that is more concentrated while the domes will have good dispersion but not the same forwardness.

I haven't heard EMIMs, so I can't comment on them, but in the cones v. domes, right now I prefer cones but that is just because I tend to like heavier music and want that punchy forward midrange.

I think it was more of a personal preference thing if you wanted domes over cones rather than any dramatic sonic improvement.

This just answered the question I just posted. Ty