Help for HF driver for OB speakers

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I am digging internet including this forum for upgrading my HF driver but I thought to ask some questions before pushing the trigger!
I have a pair of Spatial Audio M1 Se turbo with compression driver from P Audio (BM-D440S) as HF
P.Audio BM-D440S Seriss II- P.Audio BM-D440S Series II 1" screw on type high frequency compression driver. P.Audio speaker components available at US Speaker.
Right now I am thinking to replace them with something much better instead buying new speakers.
Price is not an issue so what you could recommend?!
Right now Voice Coil, Radian and BMS is under my radar!
music soothes the savage beast
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If the money is no issue, go with raal.


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Try out the Celestion CDX1-1748 ( it's a newer screw-on version of the CDX1-1747 ).

If you are moving away from a Ti diaphragm due to a tendency at adding "zing", then try out a polyimide or aluminum diaphragmed driver ( IME, the other plastics available in diaphragms are a bit too soft for the lower point needed with those co-axes you presently have ).

Ignore Celestion's recommended lowest crossover point of 2000hz.
- I have some CDX1-1747(s) and they can easily support a crossover point that's lower than 1000hz ( when used at home ) .

Having said all that; simply swapping in new compression drivers without tweaking your existing crossover is going to be really hit-or-miss .

Celestion make good sounding drivers at very competitive prices ( BTW ).


PS; the B&C de250 also uses a polyimide diaphragm.
I have always liked the sound of B&G Neo3 tweeter. And with back removed, it works as true open baffle dipole. I used it with betsy (with removed whizzer) on open baffle project I made for a friend of mine. He is very happy with the sound.

A caution if you decide to use the Neo3. The most common version is the PDR version, which has better off-axis dispersion up high. The dispersion is too good, however, so the dipole response is not as good as you get a null on axis. For dipole use the one without felt on the sides does not have this problem so all is golden. Conveniently enough the GR Neo 3 does not have felt on the sides by default
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