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  1. DIY Subwoofers - General Discussion
    High excursion driver discussion- Sundwon Audio ZV4- Stereo Integrity (vaporware) - FI SP4 HT... Anyone with first hand experience with one or the other, or both? I'd like to hear all opinions on the FI sp4 vs the zv4. 18" driver 3750 Peavey watts per sub
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