hi, don, thanks, I too think it's 750 herz, but I'm not sure, I couldn't find the actual model t mods on this site, does anyone know? the later model t has a switch to change the frequency of which the mid pot is controlling the rate, but the sceptre (and probably some other types) has a switch to pump up a certain part of the mid frequencies, my question is which part...
Does anyone know if there is also information about master volume modification (gain control/enhancement) on the coliseum tube p.a. head and changing the output from 120 to 150 watt? hope to hear from you guys and gals, cheerio, guy.