Tossed in the 2nd tweeter. Things sounded a little "light", very slightly more detail then stock, not unpleasant. Adjusted the Tweeter in the hidden config menu to +.5 (if going by the H1212 specs the 001 excel is .5 DB less sensitive), and everything started sounding very improved. Crossover seemed to blend much better, vocals sounded right, piano and violin sounded great. prior to the .5 db bump, was most likely going to revert, after: satisfied with the sound. The highs seem a bit smoother yet detailed, very easy to listen too. overall Meridian did an amazing job with the stock H1054 tweeter; the bypass caps made the stock tweeter amazing(much blacker background adding clarity and detail). Going to the excel did not jump the bar much~ more a question of sonic taste instead of improvement. Still need more hours on the tweeters to break them in, so sonics and opinions may change. depending on how it goes, may make up some new mounts with better material.

808v6, 818.3, G65, G61RSL, G91DH, G08, G98DH, 500v3, 504, 218-LPS, 218, 210, MS200
8000uSE, 5200SE, 5200HSE, DSP5200 (nonSL~fully rebuilt w/ Excel tweeters), DSP3300x2, DSW.2
HD621, Pair of Revivers, AC12