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A couple of comments ...The quick sim I did indicates the 12NDH-4 would be one of the best choices you can get for the PM90/60. If you use the XT1464 horn in the standard configuration only BMS driver will fit. (also check that the 4594 will still fit with the 12NDH-4).B&C DCX464 /HF950 will fit I think, but check. Also the 464 with the PR614 may fit - but check I have not tried it.I think the Ciare PR614 is possibly a better horn than the XT1464 ... BUT ... the XT1464 is bigger and goes lower which is an advantage in the PM60.The difference between the PMA60 and the PM60 is the mids (100 - 700Hz} have a 5-6 dB output advantage.
A couple of comments ...
The quick sim I did indicates the 12NDH-4 would be one of the best choices you can get for the PM90/60.
If you use the XT1464 horn in the standard configuration only BMS driver will fit. (also check that the 4594 will still fit with the 12NDH-4).
B&C DCX464 /HF950 will fit I think, but check. Also the 464 with the PR614 may fit - but check I have not tried it.
I think the Ciare PR614 is possibly a better horn than the XT1464 ... BUT ... the XT1464 is bigger and goes lower which is an advantage in the PM60.
The difference between the PMA60 and the PM60 is the mids (100 - 700Hz} have a 5-6 dB output advantage.
