General Car Audio Discussion & QuestionsAll general car audio discussion goes here. Need help installing speakers, headunits, amps or electrical? Having problems with equipment? Have questions about a product, post here.
Not as much in the box as you would think i had 2 different boxes for my hdc3 15 one tuned to 38hz and one tuned to 30hz playing frequencys at 31-32hz i only got about a 1.2db gain out of the 30hz box.
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