What happen to my high frequency?

[d rick man]

I play a Rickenbacker through a fender rumble 75 tilted up right behind me. For two reasons. I like the sound I get with this combination. I use the monitor in front of me everyone else, no lows. My rumble then goes through the PA system. My volume is good and loud and thumping but when go to the bottom two strings and go high my sound gets lost in the mix. What can I do to bring my highs up without bring my lows up?
Thanks

 

[Stumbo]

Notes up high on the D and G strings get into guitar frequencies.

Why play up that high?

 

[d rick man]

Why? because I am in a cover band and I play every song just like the artist, to my ability, just like the original. I thought there might be some tricks of the trade that would help me on live stage to get the same sound as the professional studio mixed high end parts.

 

[Stumbo]

Maybe a volume, boost or programmable eq. pedal will help you out.