Review on 🔊 Upgrade Your Car Audio System with BOSS Audio BRS40 4 Inch Full Range Replacement Speaker by Gloria Mesa

I ordered a 4" speaker to upgrade my A1U cabinet. The quality of the speaker is evident compared to the standard speakers that come with these cabinets. The sound quality is excellent. Overall more base and cleaner sound. Just be aware of those who want to upgrade their cabinets. Please check your speaker size before ordering. I have 3 cabinets from A1U. Endkampf, Ramage and Mortal Kombat. Mortal Kombat is a 3- "Speakers. I tried turning it sideways to make it work. It's a bit big. It sticks out and you can't put the panel back. I think a 3.5" speaker fits in the cockpit from Mortal Kombat by turning it sideways and drilling new holes.