Ejvic,
I was able to look up the Seas T29MF001 shown as recommended by Madisound above... It was a 92db 4 ohm sensitivity tweeter. Selling now for about $250 U.S. If Madisound is correct, that means that your Hales have a tweeter pad (tweeter volume is turned down)... but if that is the case, it would affect your 87.5db 6 ohm vifa that you are now using and it would sound dull... if I recall one of the treads above, it gets bright on occasion, which leads me back to telling you to buy the Dayton RS28F-4 from Parts Express. I can most likely find others, but I think you will find this a nice sounding alternative, good luck,
Tim
I was able to look up the Seas T29MF001 shown as recommended by Madisound above... It was a 92db 4 ohm sensitivity tweeter. Selling now for about $250 U.S. If Madisound is correct, that means that your Hales have a tweeter pad (tweeter volume is turned down)... but if that is the case, it would affect your 87.5db 6 ohm vifa that you are now using and it would sound dull... if I recall one of the treads above, it gets bright on occasion, which leads me back to telling you to buy the Dayton RS28F-4 from Parts Express. I can most likely find others, but I think you will find this a nice sounding alternative, good luck,
Tim