The announcer
is the announcer who hosted all the Tenka-ichi-budoukais in the Dragon Ball story. He is very excited to host every match and will often place himself in danger to be able to produce a good job. Even in extreme events where the whole arena was going to be blown away and everyone ran for safety he stayed and continued to announce the fights to an empty arena.
For this cache you will need to go to a place where the announcer feels most at home - a nice big sports complex that has grounds and stadiums for many kinds of sports and activities. When I hid the cache there was no one in sight and the whole place was quiet. But if there is a sports game or event going on then you may have muggle issues. GOOD LUCKnbsp;