The antonyms for the phrase "good vibration" can vary from negative to neutral associations. On the negative side, antonyms could include ideas such as bad energy, negative vibration, or unpleasant ambiance. These expressions suggest feelings of discomfort and tension, which is the opposite of what someone would associate with a "good vibration."
On the neutral side, antonyms for good vibration could be more objective or descriptive, such as broken machine, static noise, or mechanical hum. These terms don't necessarily conjure up positive or negative associations, but instead provide a more factual description of certain sounds or sensations.
Overall, the antonyms for good vibrations depend on the context and the speaker's intended meaning or mood.