Mini sub

This is my mini subIt uses two 2-inch speaker on the frontIt has a small port that exits through the middle of the speakersThe speaker hole has a diameter of 1.85 inches in case you want to put a different speaker into the box.The back half slides out, so you have easy access to the speakersIt is 5 ½ inches long, 2 inches in depth and 2 ½ inches tall Below are the links for everything I usedThe parts I use did require a little bit of soldering Speaker- Amazon.com: Cylewet 4Pcs 2inch 8Ohm 5W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 4) CYT1121 : ElectronicsAmp-Amazon.com: ECSiNG 2 Pack 3.7-5V Bluetooth Receiver Module Audio Receiver Amplifier Board Red with Charging Port for Wireless Speaker DIY Sound System : ElectronicsBattery- Amazon.com: YDL 3.7V 500mAh 502248 Lipo battery Rechargeable Lithium Polymer ion Battery Pack with PH2.0mm JST Connector :r