Batman nimbly reverses the polarity on his communicator..

6 seconds sound clip from Batman (1966) - Better Luck Next Time (S1E20) TV Series.

You can hear this line at 00:04:40 in the Blu-ray version of the movie.

Quote context

[...]

- Batman, it's been fun, but all good things must come to an end. And the goodest ending I can think of is yours.

- It's not ended yet.

- It will soon. It's a pity I can't stay and watch, but you know how I hate the sight of blood.

- TTFN.

- And what's that supposed to mean?

- Ta-Ta For Now.

- I'm off to pluck Robin's feathers.

- Calling on his fantastic storehouse of audio engineering knowledge...

- Batman nimbly reverses the polarity on his communicator..

- Then increases the audio modulation to about 20,000 decibels knowing full well, it will split the tiger's skull.

(Bat-communicator audio modulation to about 20,000 decibels)

- Don't bother, Robin, you wouldn't know to get out of here even if you get loose.

- Just you wait, Catwoman. Batman will be here in a minute and you'll be sorry.

[...]