https://www.hiddenhome.tech/product/grimm-audio-subwoofer-ls1s-subwoofer-pair/
Grimm Audio Subwoofer - LS1s Subwoofer (pair) | Hidden Home Technology
Feb 4, 2025 - A pair of LS1s stereo subwoofers integrate seamlessly with the LS1 or LS1a. Its phase corrected crossover at 70 Hz is already build in the LS1, so just adding...
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