Hey, I'm thinking of trying a new tweeter in a GR-research kit, AV-3 and AV-1 just for kicks. I have recently used the GR-Research crossovers with other drivers with success and was wondering if this would be the same. I just came across an aluminum dome tweeter by vifa which is on buy out #Part Number 269-370. link *Power handling: 100 watts RMS/140 watts max *VCdia: 1" *Znom: 6 ohms *Re: 4.6 ohms *Frequency range: 2,000-35,000 Hz *Fs: 850 Hz *SPL: 90 dB 2.83V/1m *Dimensions: A: 4-1/16", B: 2-7/8", C: 1-9/16". I am going to be using it as a direct replacement for the following GR-Research T1 soft dome Tweeter: *Frequency Range 1k - 20kHz Nominal Impedance 6 ohms Voice Coil Height 1.4 mm Voice Coil Diameter 25.4 mm Coil Layers 2 DC Resistance 5.4 ohms Free Air Resonance 1075 Hz Nominal Power 75 watts Sesitivity 90db The sensitivity, and impedance are almost equal with the FS at 850 instead of 1075. Seems that I wouldn't need to do any adjustments to the network, do you agree? It seems like a beefy "commercial" metal dome that might be able to give me some brighter highs that i'm looking for. Reason why I'm shopping for a new tweeter is because I fried the VCs of my tweeters and ordered replacements. During the time of waiting for the replacements I tried other tweeters and found that it changed the way the speaker sounded. (for Better and for worse). Any comments before I order? I know that it may not fix exactly, but that can be solved.