The power of the ghost clown is great.
3 seconds sound clip from Scooby-Doo, Where Are You! - Bedlam in the Big Top (S1E10).
You can hear this line at 00:06:25.989 in the Blu-ray version of the episode.
Quote context
[...]
- Where did he learn to do that?
- Come on, Shaggy, we've got to stop him.
- Quick! Grab this trampoline! Let's get it under Scooby.
- Now you stay here and try to catch him, and I'll go up and try to help him.
- OK.
- The power of the ghost clown is great.
- It's time for that silly dog to wake.
- You shall not work in this circus.
- Scooby, be careful! You're on the trapeze wire.
[...]