LC2i bass roll in/off r/CarAV

Lc2i Bass Knob. LC2i bass roll in/off r/CarAV Its not clearly noted on the JL or in their documentation if it is indeed a level control like the input is labeled or a bass boost control like the optional knob is labeled If its a bass boost it simply increases the bass as whatever frequency they've chosen up to 12 dB

Knobs
Knobs from gunstreet.co

The ACR-1 ONLY controls the level of the Bass Output and is strictly an attenuator knob ACR-1 Level Control The ACR-1 is a great way to control the Bass Output level being sent to your subwoofer amplifier

Knobs

The LC2i Pro will automatically detect the audio signal and turn on Amp is a Pioneer GM-D8601, sub is Pioneer TS-SW2502S4 Amp Gains are: level: 3/4 up subsonic: 24hz (box tuned to 32hz) phase: 0 bass eq: 2DB LPF:65hz

Choosing the correct knob for your guitar or bass. Philadelphia. Impedance Matching, AccuBASS, GTO, Audio Signal Sense, 12V Turn-On and ACR-1 Dash. Whether you're adding a subwoofer or planning a full system upgrade, the LC2i PRO ensures the best possible.

Knobs. Adjust the input gain using the Main and Bass Output Level knobs to achieve the desired audio level. Rux-Knob for the alpine amp: Amazon.com: Alpine RUX-KNOB Remote Bass Level Control Knob for PDX-M12 and PDX-M6: Electronics or Audio Control Wired Remote Control: Amazon.com: Audio Control Wired Remote Control for The Epicenter, LC2i, LC6, 6XS and Overdrive Plus: Automotive What would be best? im not sure what the difference would be