Pro vs hifi drivers - pros and cons?

[Borat]

Geddes the compromise you're making in your designs is a reasonable one.

But JBL also know a thing or two about sound and they fitted everest with a supertweeter.

i know you will say that was a marketing move. but i would disagree.

marketing move is when you replace a grey surround with red one or anything that doesn't cost nothing to accomplish and has no effect on anything.

but when you develop an entirely new driver from scratch using a beryllium diaphragm - that's not marketing. marketing people would never waste that much money.

your speakers all beg for a nice supertweeter crossed at 8 khz. unfortunately there aren't too many nice supertweeters around except maybe this guy:

Welcome to E-Speakers.com - Very High End Loudspeaker Components

of course having the supertweeter cost more than the speaker itself would be kinda silly

[MisterTwister]

well, those frequencies are just not present in music material. at least I'm not aware of such music. I already posted similar chart on this forum. This is averaged output from my preamp. one of Paul Mauriat's composition, which sounds like it has a lot of treble. I've tested many different tracks, none get to 20k.

[CLS]

Try some very simple jazz piano trio (with drum set). There are cymbals and brushes giving you very very much 16kHz and up.

[MisterTwister]

any particular artist you would recommend? I listen to jazz rarely and don't know any of the band names.

[Andre Visser]

Frequency response and phase are directly linked, phase are influenced long before you see a drop in frequency response. I guess PA dogma is that phase are not important but since we are talking hi-fi, don't forget the importance of phase relation in stereo imaging, especially at higher frequencies.

[Borat]

i guess since according to some of you music doesn't contain high frequencies ( even though many instruments go to 100 khz outside of your fantasy land ) then CD in fact sounds the same as a compact cassette ( which goes to 16 khz ).

anybody who thinks he can hear the difference between compact cassette ( or AM radio for that matter ) and CD is imagining things i guess.

this reminds me of a friend of mine back in college. he lost his sense of smell when he had his tonsils removed. he never washed his gym clothes and wouldn't believe people when they told him that they were stinky as hell.

believe whatever you want to believe !

i don't care ...

[gedlee]

Originally Posted by Borat

But JBL also know a thing or two about sound and they fitted everest with a supertweeter.

i know you will say that was a marketing move. but i would disagree.

You got that one right - most of the rest is wrong however.

The CD vs cassette comparison - come on! Do you think FR is all that makes up all this difference? And Cassette had a lot of trouble above about 8 kHz. 16 kHz is a real stretch.

[J.R.Freeman]

Originally Posted by Borat

weight is irrelevant here.

Diaphragm mass is certainly relevant. I agree that the shape of the diaphragm has some effect, but you can not disregard mass.

....the frequency response which was very ragged.

but for some reason it just sounded the way you want treble to sound.

Hmm, perhaps you learned to like that particular form of distortion?

[Pano]

That's what I was thinking.

[vuki]

Something interesting: ABX Double Blind Tests: Filters, Fourth Order