Which sweep filter model corresponds to channels 1-12?

The sweep filter model that corresponds to channels 1-12 is the 215L. This filter model is specifically designed to effectively manage and process the frequency ranges utilized by these channels. It is known for its ability to provide a smooth and precise control over the frequency response, making it ideal for applications needing accurate filtering in lower frequency ranges.

The 550L and 560L models, while also effective, cater to different frequency ranges or applications. The 550L is typically associated with higher frequency management, and the 560L also focuses on a slightly different spectrum than the 215L. The 225L, similarly, does not align with the characteristics of the channels in question, resulting in it being unsuitable for this specific range.

Therefore, the 215L is the correct sweep filter model that corresponds to channels 1-12, owing to its tailored specifications for the frequencies in that range.