Final answer:
The limitation of using the RTA method to adjust equalization is that it requires a trained ear to accurately identify and adjust the frequencies.
Step-by-step explanation:
A limitation of using the RTA method to adjust equalization is that it requires a trained ear to accurately identify and adjust the frequencies. The Real-Time Analyzer (RTA) provides visual feedback on the frequency response of an audio signal, but it doesn't provide specific guidance on which frequencies need adjustment. Without proper knowledge and experience, it can be challenging to use the RTA method effectively.