Marshall speakers are designed to handle a wide range of frequencies, including low frequencies. The specific range of frequencies that a particular Marshall speaker can handle will depend on the specific model and design of the speaker. Some Marshall speakers are designed with larger drivers that are specifically intended to produce deep, powerful bass, while others may be designed to be more balanced across the entire frequency spectrum. In general, Marshall speakers are known for their ability to produce high-quality sound across a wide range of frequencies, so they should be able to handle low-frequency bass sounds well.