Well if your wanting something with quality I’d go with something like this-
Pair of these or 15s https://m.ebay.com/itm/SUNDOWN-AUDIO-E-12-V-3-D4-12-500W-RMS-DUAL-4-OHM-CAR-SUBWOOFER-BASS-SPEAKER-NEW/131743665493?epid=1894698002&hash=item1eac88cd55:g:eMIAAOSwv9hW2iTQ
This amp * NEW *...