ACR MLG ALTDEV OVERSHOT DURING CLB OUT FROM BUR.

Narrative

DEPARTING BURBANK ARPT ON THE VAN NUYS 7 DEP DAGGETT TRANSITION. AFTER DEP; WE TURNED TO A 210 DEG HDG AND CONTACTED DEP (124.6 FREQ). THE CTLR GAVE US A VECTOR FOR PALMDALE. AFTER TURNING TO THE ASSIGNED HDG WE RECEIVED SEVERAL TCASII TA AND RA ALERTS. THESE ALERTS (TFC; TFC; MONITOR VERT SPD; CLB) ARE VERY LOUD IN OUR AIRPLANES. WHILE CLBING OUT AND TRYING TO VISUALLY ACQUIRE THE TFC; PASSING 6800 FT AND CLBING AT ABOUT 4000 FPM). WHEN THE CTLR ASKED US ABOUT OUR ALT THAT MADE ME LOOK AT THE ALT IN THE MODE CTL PANEL AND IT READ 8200 FT. THIS CONFUSED ME BECAUSE OUR CLRNC ALT WAS 13000 FT. AS I STARTED TO PITCH THE JET OVER TO LEVEL IT OFF; THE CTLR TOLD US TO GO AHEAD AND CONTINUE OUR CLB TO 13000 FT. IN DISCUSSION WITH THE CAPT AFTER; IT BECAME APPARENT WHAT HAD HAPPENED. WHILE THE TCASII WAS GIVING US AN ALERT THE CTLR HAD ASKED US TO LEVEL AT 6000 FT; BUT I DID NOT HEAR THE COMMAND BECAUSE OF THE TCASII. THE CAPT DID HEAR IT BUT WHILE HE WAS IN THE PROCESS OF PUTTING 6000 IN THE WINDOW THE TCASII 'CLB' COMMAND DISTRACTED HIM AND HE GOT TO 8200 FT. THIS WAS HAPPENING IN A VERY SHORT PERIOD OF TIME; AND BECAUSE OF THE HAZE WE DID NOT VISUALLY ACQUIRE THE TFC. UPON RETURNING TO BURBANK; THE CAPT CONTACTED THE CTLR SUPVR TO DISCUSS THE PROBLEM. THE CTLR HAD GONE HOME. HE DID MENTION TO HIS SUPVR THAT WE MIGHT BE CALLING AND THERE WAS NO PROBLEM. SOLUTIONS: I BELIEVE THE TCASII VOLUME NEEDS TO BE REDUCED; BUT BEYOND THAT; I BELIEVE THERE NEEDS TO BE A REVIEW OF TCASII PROCS BECAUSE WHEN ARRIVING AND DEPARTING BURBANK; IT IS VERY RARE NOT TO GET TA OR RA AND SOME PEOPLE CONSIDER THESE BOTHERSOME AND I HAVE EVEN HEARD RUMORS OF PEOPLE TURNING IT OFF WHEN THEY NEED IT MOST. SUPPLEMENTAL INFO FROM ACN 192148: THE TCASII IS JUST TOO LOUD! IT TOTALLY DOMINATES THE ENTIRE COCKPIT WHEN IT GIVES WARNINGS AND SHOULD HAVE A VOLUME CTL OR BE TONED DOWN RADICALLY.