Frequency tuning and options - Plug low and strong bass to shape the bass output across high and low frequencies. - Plug strong and low to produce a high frequency emphasis with a rich overall tone. Connector and mids management - Improved connector supports MID and bass for two general frequency bands. - If the tweeter sounds low, set the medium switch to strong to boost the mids. Power and tone controls - Power: single 400W. - Triple debugging: three options are strong, medium, and low. - Bass debugging: presets include full tone, midrange, bass, or powerful bass. Subwoofer and standard frequency mode - If you have a subwoofer, you can switch from bass to midrange. - Plug medium and low for standard high and low frequencies. Use scenarios - Home theater with subwoofer: use the 400W unit with bass presets to achieve powerful bass, and adjust the medium switch to strong if mids need more presence. - Studio or precision listening: use MID and bass with the strong/mid options to balance tweeter response and midrange clarity. - Everyday music listening with separate speakers: set to standard high and low frequencies by selecting medium and low plugs for a balanced sound profile.