Hi Vern,
- The 276nd ( on the H3100 ) will have a falling HF response ( @ 6 db per octave ) starting at around 3K . Therefore you'll need some HF horn compensation to flatten out the response out to 10K ( even using a tweeter )
- Your crossover will need an RC bypass network to attenuate the midrange ( such as is found within the S3100 or S3100 mkII network ) .
About resistors ;
- I read an older S2600 post of yours , so I realize you've got a "bee in your bonnet" with you thinking that the top-end of the S2600 is compromised ( dull ) because ( your guess only ) too much resistive attenuation was included in the network ( though necessary to match the sensitivety of the ME120H ). There
may be some truth to your conjecture / but that sort of tinkering ( sparkling up the UHF ) is best left to experienced network designers .
- ie; don't fixate about the sound of resistors, that'll only serve to grind your project to a halt . Remember , you're using different drivers than what you're used to listening to .
ps ; nice project !