setting your crossovers by ear is fine if you dont care about precision. You might think its at 8Ohz when its really at 62 (or 102 for that matter) Really, a few hz wont matter too much in a single subwoofer amp situation. 62, 8O, 102, who cares LOL - but if you have more then one amp on the woofers, it starts to matter more. It becomes less of a preference and more of a necessity. I mean, if you have 2 amps and 2 subs (especially the same chamber), its a lot more important to nail the x-overs on both then it would be if it was just one amp. Same thing if you had 2, 2 channel amps running each set of door panels. Even a 4 channel. I personally would want my x-overs to be the same. You cant do that by ear.
if you are running fully active and leaving the amps on full-pass, and have a digital processor in front of them.......then you may or may not need to use this product. Depends on which crossover you are using.
regardless, this isnt a toy, its a TOOL. So if you think you will only use it once and never use it again, maybe it isnt for you. If you are a car audio NUT like me, and know you will want to be PRECISE for the rest of your life from here on out, then it IS for you. If you don't care, and prefer to guess all your settings, more power to you.
STEVE LETS SAY A 6-Channel Digital Crossover and Equalizer 3-way Crossover1/3 Octave / 1/2 octave equalization per channel
2 Parametric equalizers per channel
24db/octave linkwitz riley alignment crossover PFM subsonic filter and Digital Frequency Adjustment would the CC1 be needed for this ????? just to be clear