Is the Q of Roswellite different than foils?
Roswellite used alone in air does have a slightly lower Q than aluminum foil. However, all Crowley and Tripp microphones are a system designed to have a Q of very close to 1 at any frequency in the passband. In other words, the ribbons in any of our mics including those with or without Roswellite, are virtually non-resonant.