Car Audio & Video. MB QUART GMR1.5S2W Marine Gauge Receiver w/ Bluetooth+(2) White 6.5 Speakers. MB Quart 160 watt two speaker audio system with 6.5 coaxial speakers and gauge mount Bluetooth source unit. Power Requirements: DC 12v, Negative Ground. Maximum Output Power: 4 x 40 watts. Current Draw: 10 AMPS (max). Bluetooth Range: 32 Feet. Mounting Hole: 3.14. Mounting Depth: 2.99. Two 6.5 inch coaxial speakers with 0.75 inch composite dome tweeters: Water resistant composite polypropylene cone with temperature stable UV Butyl rubber surround mounted on a lightweight composite frame. Composite Integrated Grill: UV treated against sun fade and waterproof and are integrated into speaker frame for simple installation. Compatible Vehicle Fitment: Universal. Built in four channels of output plus an subwoofer RCA outout. Speaker Features: Tweeter: 0.75 composite dome, Frequency Response: 35Hz to 21kHz, Sensitivity: 89db, 80W Maxx / 40W RMS. Time and Tools: Basic hand tools. Vehicle Kit Total System Power (watts): 160. Series: Tuned Audio System. If your item is defective or you want to return it for any reason within the first 30 days of when it was delivered to you; you have the following options. We will send you a. To replace the item for a brand new one. All replacements and exchanges are free. Process for returning items. Item Code: GMR1.5S2W.