I do not think any of this is "super simple" but here's a few other options to consider... and perhaps building a three way.
1) Two drivers that cover 700Hz and up:
Selenium D250-X GW 1" Phenolic Horn Driver 1-3/8"-18 TPI
Tang Band 75-1558SE 3" Textile Dome Midrange
2) For a two way I think a Fast is best using a full range driver and woofer. Pick your poison and enjoy!
Btw, I was at the NY Audio Show and some of the best sound came from tiny little boxes using Mark Audio's $40 drivers - but they were heavily equalized and the total system cost $12,000. They certainly covered 700Hz to 7kHz.
3) And finally, something like this is a possibility tho it would bring your crossover up to about 800Hz... but I bet it sounds pretty good.
Eminence N320T-8 2" Neo Compression Driver 8 Ohm 4-Bolt
1) Two drivers that cover 700Hz and up:
Selenium D250-X GW 1" Phenolic Horn Driver 1-3/8"-18 TPI
Tang Band 75-1558SE 3" Textile Dome Midrange
2) For a two way I think a Fast is best using a full range driver and woofer. Pick your poison and enjoy!
Btw, I was at the NY Audio Show and some of the best sound came from tiny little boxes using Mark Audio's $40 drivers - but they were heavily equalized and the total system cost $12,000. They certainly covered 700Hz to 7kHz.
3) And finally, something like this is a possibility tho it would bring your crossover up to about 800Hz... but I bet it sounds pretty good.
Eminence N320T-8 2" Neo Compression Driver 8 Ohm 4-Bolt
There's also this tweeter from SB acoustics tested by Troels that has the lowest HD levels I've ever seen at 1khz
SBAcoustics-tweeters
If fitted to a shallow waveguide and then equalizing the boost of the guide to flat, you might just get to a 700-800hz crossover range with a steep filter. Won't go very loud, but for a day to day in house speaker, might be just what you ordered.
SBAcoustics-tweeters
If fitted to a shallow waveguide and then equalizing the boost of the guide to flat, you might just get to a 700-800hz crossover range with a steep filter. Won't go very loud, but for a day to day in house speaker, might be just what you ordered.
There is 1/3 octave smoothing in Spec sheet measurements - wiggles in treble are smoothed away. No idea about the sound.
I think that the recently developed bending-mode-radiator (BMR) drivers can break the rules you set forth above. You can use them in a small enclosure from 700Hz and up, or OB/nude as low in frequency as power input allows (1.5k?). At high frequencies the off axis performance (at least in the front hemisphere, by my measurements of one model) is close to CD (close enough for me). Not a high SPL compression driver on a horn, but that is not what I am after.
See attached pic for an example (this is 'nude' e.g. driver in free air) of response at 0-30-60-90 degrees off axis and the on-axis distortion (at maybe 1W input power). I am using this as the tweeter in an OB loudspeaker project that I have started to build.
Attachments
This is in the same family as the one I posted about, above, with my measurement. But this one has a very low sensitivity of 80dB/W, and correspondingly low power handling of 10W, 20Wmax. But yes, BMR's have very good off-axis response at the high end (for a 2" diameter driver) while having healthy Xmax (this one has 2.5mm).
I used that one in a center channel speaker as a mid/tweet. Nice......but not as nice off axis as the small 2" i mentioned....since we were talking directivity.
The 3" worked great in the CC application though. Crossed it at 250hz to a pair of designer series 4" woofers in a horizontal MTM. Took the design principle from Cambridge
The 3" worked great in the CC application though. Crossed it at 250hz to a pair of designer series 4" woofers in a horizontal MTM. Took the design principle from Cambridge
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