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Best Choice MEREDO 
180W Sound Bar MEREDO 2 in 1 Detachable Soundbar for TV 2.1CH Soundbar with Subwoofer USB Audio Delivery 5 EQ Modes Treb ADVANCED 2.1 SOUND BAR: 180W peak power carrying capacity and rapid refresh rate woofer in the MEREDO go beyond conventiHerdio 
Herdio 6.5'' Bluetooth in Wall in Ceiling Speakers 600W 2-Way Flush Mount Speakers System with Wall Amplifier Receiver f Bluetooth Ceiling Speakers: Independent 4 channel wall amplifier bring you stereo sound effects. The in wall amplifier a
Portable Bluetooth Party Speaker Sub Woofer Heavy Bass 2000W Sound System & MIC 视频：https://youtu.be/eMeQst3ZwKA、 Portable Bluetooth Speaker Sub Woofer Heavy Bass DJ RGB Party Speakers Sound System TWSPyle 
Pyle 3-way Mini Box Speaker System - 3.5 Inch 200 Watt Waterproof Marine Grade Mount Speakers - in a Heavy Duty ABS Encl AMPLIFY YOUR RIDE: Pyle’s 200W Hydra marine speaker system is perfect for boats, decks, poolside, or outdoor spaces. Inc
3000W Portable Bluetooth Party Speaker Sub Woofer Heavy Bass Sound System & MIC Multiple connection options: Our speaker with lights supports radio, microphone input, and storage card playing, easy toBest Value Bose 
Bose Surround Sound System for Home Theater, Black The smallest speakers designed by Bose, so the focus can remain on your home entertainment, not your speakersAvantree 
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Multiple connection options: Our speakeJierben Sound Bar for Smart TV, Surround Sound System for TVs – 50W Bluetooth Soundbar with Bluetooth, ARC, Optical, and AUX Con IMMERSIVE 3D SOUND & DEEP BASS：Immersive 3D surround sound system for tv Experience Experience immersive 3D surround sou5000W Dual 8.5'' Bluetooth Speaker Sub Woofer Heavy Bass Sound System Party &Mic The midrange and treble can remain loud and clear. It fits for gatherings of up to 200 peopl e. Stable Bluetooth 5.0 Con23% Off MEVOSTO MEVOSTO Soundbar for TV with Subwoofer, 2.1CH TV Sound Bar Under Monitor with 5.25'' Woofer for PC Gaming, 12L Deep Bass 【Designed to Be Heard in Minimal Size】Experience a seamless fusion of compact elegance and cutting-edge engineering withPortable Bluetooth Party Speaker Sub Woofer Heavy Bass Sound System & MIC 3000W Features: 1.Bluetooth 5.0 Chip: Your favorite music will smoothly come out from the Bluetooth speaker. 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It covers an ar44% Off Logitech Logitech Z150 Multimedia Speakers - 6W Peak Power, Clear Stereo Sound, Integrated Volume and Power Control, Headphone Ja The 2 x 2 inch drivers deliver 3 watts of clear-quality stereo acoustic sound32% Off Logitech Logitech Z150 Multimedia Speakers - 6W Peak Power, Clear Stereo Sound, Integrated Volume and Power Control, Headphone Ja The 2 x 2 inch drivers deliver 3 watts of clear-quality stereo acoustic sound34% Off Pyle 6.5 Inch Dual Marine Speakers - 2 Way Waterproof and Weather Resistant Outdoor Audio Stereo Sound System with 120 Watt P COMPLETELY WATERPROOF: This is a marine speaker that’s completely waterproof and can be used for several vehicles becaus14% Off Panasonic Panasonic 20W CD Micro Hi-Fi System with FM Radio and Bluetooth (SC-PM250GN-S) Stream Your Music Wirelessly with the Panasonic Music Streaming AppRedragon Redragon GS520 RGB Desktop Speakers, 2.0 Channel PC Computer Stereo Speaker with 6 Colorful LED Modes, Enhanced Sound an IMPROVED CLEAN BASS - The GS520 ANVIL features an advanced sound drive unit with an improved 2.0 channel stereo core for25% Off Edifier Edifier MR4 Powered Studio Monitor Speakers, 4" Active Near-Field Monitor Speaker - White (Pair) Enjoy the music in the best sound performance with 42W RMS enhanced with Class-D power amplifierEdifier Edifier G2000 Gaming 2.0 Speakers System, Pink Equipped with interesting RGB backlightingOROROW OROW PC Speakers,16W Computer Speakers with Subwoofer,Strong Bass,3.5mm Audio Inputs,Great for PC/Laptop/TV/Projector (W 🏆【9MM Thick-Wooden Box】stable and thick, can effectively reduce noise and obtain a more pure and good sound.Deep bass,Pyle 4” Mini Cube Bookshelf Speakers - Paper Cone Driver, 200 Watt Power, 8 Ohm Impedance, Video Shielding, Home Theater Appl 200 WATT POWER: These mini bookshelf speakers have a power handling of 200 watts peak that will produce high sound resonPyle 4” Mini Cube Bookshelf Speakers - Paper Cone Driver, 200 Watt Power, 8 Ohm Impedance, Video Shielding, Home Theater Appl 200 WATT POWER: These mini bookshelf speakers have a power handling of 200 watts peak that will produce high sound reson43% Off AIDERLY USB Computer Speakers, Stereo Sound Desktop Speakers with 3.5mm Audio Plug for Computer, Laptop, PC, Pad, Cellphone IMMERSIVE AUDIO: Features dual full-range drivers delivering crystal clear stereo sound with 360-degree surround sound c20% Off AIDERLY USB Computer Speakers, Stereo Sound Desktop Speakers with 3.5mm Audio Plug for Computer, Laptop, PC, Pad, Cellphone IMMERSIVE AUDIO: Features dual full-range drivers delivering crystal clear stereo sound with 360-degree surround sound cEdifier Edifier G1500 MAX 2.1 Computer Speakers System, 60W Hecate Gaming Speakers with Subwoofer Line Out, RGB Light, Bluetooth 2.1 Computer Speaker System - Live stereo from dual 2.5-inch drivers and 4-inch subwoofer. 60W peak power is big enough10% Off Pyle Pyle 2-Way Dual Waterproof Off-Road Speakers - 5.25 Inch 1000W Marine Grade Wake Tower Speakers System, Full Range Outdo AMPLIFY YOUR RIDE: Pyle’s 1000W dual marine grade off-road speaker system is what you need to listen to high-quality audEosnow Eosnow Mini Speaker System,Clear Sound Quality Easy to Use Small Portable Speaker, Easy to Operate and Portable 3.5mm Ja UNIQUE WIRELESS DESIGN:3.5mm Jack Stereo Mini Speakers features a distinctive wireless concept combined with a compact b25% Off Logitech Logitech Z200 Multimedia Speakers, Snow White Crisp and clear audio qualityEdifier Edifier R980T Active Bookshelf Speakers System - 2.0 Computer Speaker, 24W, MDF Wooden Enclosure, Dual RCA, 4inch Bass D 24 WATTS RMS POWER OUTPUT - Active bookshelf speaker system with 24W total power output with calibrated, flared bass refSony Sony HT-S60 BRAVIA Theatre System 6 5.1ch Home Audio Soundbar with Wireless Subwoofer/Rear Speaker, Surround Sound by Dolby Atmos/DTS:X, Voice Zoom 3 for SoLogitech Logitech Z407 Computer Speakers with Subwoofer and Wireless Control Powerful 80 watts peak powerLogitech Logitech Z407 Computer Speakers with Subwoofer and Wireless Control Powerful 80 watts peak powerEdifier Edifier R1280DB Powered Bluetooth Bookshelf Speakers - RCA/AUX/Optical/Coaxial Input - Wireless Studio Monitors - 4 Inch BLUETOOTH WIRELESS - Popular classic bookshelf speakers now can be enjoyed without the hassle of wires. Simply connectioEdifier M1360 Edifier 2.1 Multimedia Speaker System 8.5W Edifier 2.1 Multimedia Speaker, Wired Remote Control Wooden MDF enclosed, 4 inch subwoofer with front bass reflextion portSony Sony HT-S60 BRAVIA Theatre System 6 5.1ch Home Audio Soundbar with Wireless Subwoofer/Rear Speaker, Surround Sound by Dolby Atmos/DTS:X, Voice Zoom 3 for SoRadio Shack Building speaker systems Dpofirs High-Quality Computer Speakers - Stereo Sound System with Deep Bass, 3.5mm Jack, Adjustable Volume for Desktops, Laptops Deep Bass: Full range speakers to increase the deep bass, sound quality shocking and powerful, to further enhance the ovEdifier Edifier R12U Active USB Powered Multimedia Speaker System – Bass Reflex, 3.5mm AUX Port, Headphone Jack, Master Volume w Active USB powered speakersPyle Pyle 2 Pair 10” Flush Mount in-Wall in-Ceiling 2-Way Speaker System Spring Loaded Quick Connections Changeable Round/Squ SEAMLESS INTEGRATION - Perfect for existing home theater systems this Pyle 2-way in-ceiling or in-wall speaker system deNaciffo USB Mini Speaker Computer Speaker Powered Stereo Multimedia Speaker for Notebook Laptop PC Product Size:3.14x1.2x1.78inch,mini size USB Speaker,saving place,provide you a tidy desk.VOVIGGOL Portable Voice Amplifier for Teachers, 2200mAh Rechargeable Personal Amplifier Mic PA System Headset Microphone with Spe 【Small Size and Powerful Sound】The personal voice amplifier is mini in size and light in weight (size 3.6 x 2.8 x 1 inchXUMIUZIY XUMIUZIY Stereo Subwoofer Speakers, Stereo System with Breathing Lights, Home Theater Speaker, Surround Sound for PC Mob Subwoofer adopts wooden cavity with good sealing performance, which can reduce interference and make the sound more pureYLL YLL Portable Bluetooth Karaoke Speaker with 2 Wireless Microphones, Karaoke Machine for Adults, PA Speaker with Colorful Multi-functional PA Speaker: The YLL Karaoke Machine is an all-in-one karaoke set featuring two rechargeable wireless miYLL YLL Portable Bluetooth Karaoke Speaker with 2 Wireless Microphones, Karaoke Machine for Adults, PA Speaker with Colorful Multi-functional PA Speaker: The YLL Karaoke Machine is an all-in-one karaoke set featuring two rechargeable wireless miMCLELLAND Mclelland UWA-S5 5.8GHZ Speaker Transceiver Kit Auto channel selection feature makes it easy to plug and playLogitech Logitech OEM S150 2.0 Speaker System - Black No batteries or power supply requiredLogitech Logitech Z533 2.1 Multimedia Speaker System with Subwoofer, Powerful Sound, 120 Watts Peak Power, Booming Bass, 3.5mm Au Powerful Sound : This multimedia speaker system delivers 120 W (60 W of RMS power) of powerful yet balanced acoustics -YAKESD YAKESD Computer Speakers,USB-Powered Desktop Speakers with Subwoofer,Small Stereo Multimedia Speaker System with RGB Lig Excellent sound quality:This desktop speaker system includes a 5W subwoofer and two 3W satellite speakers. Compared to oDpofirs Dpofirs RGB Desktop Speaker System with Subwoofer for Gaming Computer TV Phone, Wired 2.1 Multimedia Sound System [POWERFUL BASS ENHANCEMENT] Get a heightened bass performance with the unique subwoofer design of these USB powered deskSengled Sengled C01-BR30AUE27MSW Pulse JBL Bluetooth Speaker System, Master and Satellite BR30 LED Bulbs, App Controlled, Connec Stream Effortlessly: Bluetooth speaker connects with Bluetooth and allows you to stream music in multiple rooms in yourLogitech Logitech Z533 Multimedia Speaker System Black Powerful Sound : This multimedia speaker system delivers 120 W (60 W of RMS power) of powerful yet balanced acoustics prCREATIVE Creative GigaWorks T40 Series II 2.0 Multimedia Speaker System with BasXPort Technology Product Type: SpeakersEdifier Edifier G1000 Gaming 2.0 Speakers System, White Compact design thanks to the compact format, the stylish G1000 fits on any desktopFIFTYSIXTY FiftySixty LED 2-in-1 Bluetooth Gaming Speaker and Soundbar System Innovative 2.0 speaker system that can be used a stereo separates or can clip together to form a powerful soundbarEdifier Edifier G1000 Gaming 2.0 Speakers System, White Compact design thanks to the compact format, the stylish G1000 fits on any desktopWinBridge WinBridge Portable Voice Amplifier with Wireless Lavalier Microphone,Teacher Mic with Speaker,Wireless Lapel Amplifier f The 15W Bluetooth amplifier paired with the U10 wireless lavalier microphone, delivers clear and powerful sound, makingEdifier Edifier M201BT Bluetooth Multimedia Computer Speaker System with Subwoofer, 68W Peak Power PC Speaker, Desktop Speakers STRONG & DYNAMIC BASS – 68 watts peak power output with a 5" large-caliber woofer provides a rich, powerful, enjoyable sRedragon Redragon GS560 Adiemus RGB Desktop Soundbar, 2.0 Channel Computer Speaker with Dynamic Lighting Bar Audio-Light Sync/Dis Rich Sounds & Look - The first Redragon RGB sound bar has the upgraded driver that delivers clear and crystal sound qualPyle Pyle Megaphone Speaker | Bullhorn PA Speaker System | Wired Microphone | Siren Alarm Mode Adjustable Volume Control (PMP CLEAR SOUND & LONG RANGE: Be heard up to 1200 feet away with this professional megaphone. Amplify your voice with claritPOENVFPO Cute USB Speaker, Portable Stereo Sound, Mini Cube Speaker, Lightweight, Ultra-Portable for Home, Office, Travel, Gaming [GREAT FOR SOCIAL GATHERINGS] Share your favorite music with friends using the adorable speakers.McGraw-Hill Education TAB Designing, Building, and Testing Your Own Speaker System with Projects YLL YLL Upgraded Portable Karaoke Machine for Kids & Adults, Bluetooth Speaker with 2 Wireless Microphones with LED Lights, Upgraded Ultra-Portable Guitar Bass Effects/Karaoke Machine: The outdoor karaoke machine with 2 microphones features a dYLL YLL Upgraded Portable Karaoke Machine for Kids & Adults, Bluetooth Speaker with 2 Wireless Microphones with LED Lights, Upgraded Ultra-Portable Guitar Bass Effects/Karaoke Machine: The outdoor karaoke machine with 2 microphones features a dSpeedlink Speedlink Gravity RGB Stereo Soundbar - Speaker with Bluetooth Connection for Smartphone/Tablet - RGB Lighting - Headpho The stereo soundbar is equipped with a rotary knob to adjust the optimal volume as well as for switching on and offTandy Corporation Building Speaker Systems 2nd Edition Tandy Corporation Building Speaker Systems 2nd Edition esinkin Bluetooth Audio Adapter for Music Streaming Sound System, esinkin Wireless Audio Adapter Works with Smart Phones and Tab Listen music wireless: Stream your audio entertainment from your smart phone or tablet. Listen music through your perfecesinkin Bluetooth Audio Adapter for Music Streaming Sound System, esinkin Wireless Audio Adapter Works with Smart Phones and Tab Listen music wireless: Stream your audio entertainment from your smart phone or tablet. Listen music through your perfecBSONE BSONE Voice Amplifier with Wireless Microphone for Teachers – Portable Bluetooth Clip-On PA System with Lapel Mic and Sp Upgraded Wireless Technology: Equipped with advanced 2.4Gbps wireless transmission, this wireless voice amplifier connecIndependently Published Magic of Public Speaking: A Complete System to Become a World Class Speaker 29% Off Routledge Sound Systems: Design and Optimization: Modern Techniques and Tools for Sound System Design and Alignment Sound Systems: Design and Optimization: Modern Techniques and Tools for Sound System Design and AlignmentTacTec Press Design and Construction of Guitar and Bass Speaker Systems Tab Books How to design, build, & test complete speaker systems