Issues with Taco Tunes Sub Harness?

[viper2788]

Has anyone achieved successful bass output using the Taco Tunes Add a Subwoofer Harness on their JBL equipped sound system? I'm using the TC harness to obtain the subwoofer signal to AudioControls ACM-1.300 which is essentially identical to the LC2i Pro in terms of Accubass controls. Speaker output wires then powers a Kicker CompRT8 subwoofer that I replaced my oem sub with. No matter how I adjust the threshold/level/gain, it seems to getting mixed bass signals and quite inconsistent. Some songs hit pretty good while others are severely lacking bass. Some songs have inconsistent bass throughout. Some songs dont have much bass until I crank up the volume way higher. It only seems to be playing the lowest frequencies and I'm missing the sharp bump in many cases (more so a rumble), which my underseat alpine sub in my Crosstrek has no porblems with. I tried switching the crossover from 80hz to 120hz in hopes of getting a wider range to no effect. I tried to reverse the polarity with both the input and output wires in all combinations. Its leading me to think perhaps the amp simply isnt receiving the full range of freuqncies needed from the subwoofer output? I'm getting direct power from my battery and my ground is secure, all using 8 Ga wires. While my bass is inconsistent, its consistently inconsistent, as in each song plays the same way and lacks bass in the same parts.

That being said, where should I go from here? Could I perhaps tap into the front speakers for my subwoofer input? The ACM should still have a crossover point to filter out high freuqncies. And if I do so, will I lose some of the lower frequencies? I thought I had it all figured out but now I've got more questions than answers...


https://tacotunes.com/shop/2025-toy...-package-modified-signal-post-jbl-amp-signal/

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