A BE33 PLT; DEPARTING MKC; ATTEMPTED TO CANCEL HIS IFR FLT PLAN WHILE STILL IN ENHANCED CLASS B AIRSPACE.

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I DEPARTED KANSAS CITY (MKC) WITH IFR FLT PLAN; DIRECT TO NEWTON; KS (EWK). I HAD ATIS INFO; AND HAD A CLRNC TO 3000 FT EXPECT 4000 FT; 10 MINS. AFTER DEP WITH TWR CHANGE TO ZKC; THE RADIOS IN BEECH DEBONAIR WERE TOTALLY GARBLED. I TRIED WITHOUT SUCCESS AND WENT BACK TO TWR. STILL MONITORING LAST RADIO; I THOUGHT MAYBE ZKC COULD POSSIBLY HEAR ME? SO I DID ANNOUNCE TO CANCEL IFR FLT PLAN KNOWING THEY WOULD NOT UNTIL I WAS OUT OF CLASS B AIRSPACE. I FOLLOWED MY IFR FLT PLAN DIRECT EXACT CLBING TO 4000 FT; AFTER 10 MINS; AND STAYED ON MY DIRECT FLT PLAN AS FILED; ALL THE WAY TO NEWTON (EWK). I SQUAWKED 7600; AT WHICH TIME; I NOTICED AMPS IN THE NEGATIVE. (NO ELECTRICAL) AT THE TIME I WAS RADIOING TO CANCEL IFR; I THOUGHT I WAS OUT OF CLASS B AIRSPACE OR CLOSE AND WOULD BE FREEING UP THE IFR SYS AS I FELT THIS WAS NOT AN EMER; I WANTED TO FREE THE IFR SYS. THE WX WAS PERFECT SUNNY AND CLR AND I KNOW I COULD SAFELY FLY THE FLT TO NEWTON (EWK) HOME BASE. WITH NO COMS; CLR VISIBILITY; I DID NOT NEED OR WANT IFR TO CLR OR VECTOR OTHER FLTS AWAY FOR ME. NOT KNOWING IF ATC HEARD ME; I KEPT AND STAYED WITH MY FLT PLAN. I ARRIVED AND LANDED SAFELY AT NEWTON AND TAXIED TO HANGAR AND IMMEDIATELY CALLED WX BRIEF TO MAKE SURE FLT PLAN WAS CLOSED AND THEY TOLD ME TO CALL MR X AT ZKC FROM FBO. I DID. I TOLD HIM WHO I WAS AND HE SAID 'THEY WANTED TO KNOW WHY I TRIED TO CLOSE FLT PLAN IN CLASS B AIRSPACE' AND VERBALLY TOLD HIM WHAT HAD HAPPENED. HE ASKED FOR MY LICENSE NUMBER AND ADDRESS WHICH I GLADLY GAVE HIM VIA PHONE. ELECTRICAL PWR WAS GONE AND I DID HAVE TO HAND CRANK LNDG GEAR DOWN AT MY ARR; AND HAD A NO FLAP LNDG. THE OWNER OF THE PLANE IS GOING TO HAVE THE PLANE CHKED OUT FOR ELECTRICAL AND RADIO PROBS. IF I HAD TO DO THIS OVER; I WOULD LAND AT NEAREST ARPT AND CALL FSS OR CTR AND EXPLAIN MY RADIOS WERE NOT WORKING AS PER 91.185.