{"product_id":"velocity-premium-a2b-stage-4-plug-play-amp-and-speaker-package-with-modular-subwoofer-kit-for-2026-harley-davidson®-street-glide-limited-motorcycles","title":"Velocity Stage 4 Ultimate A2B Plug \u0026 Play Amp And Speaker Package with Modular Subwoofer Kit For 2026 Harley Davidson® Street Glide Limited Motorcycles","description":"\u003cp\u003eTired of struggling to hear your factory Harley speakers at highway speeds? Or constantly replacing blown speakers? You’re not alone!\u003c\/p\u003e\n\u003cp\u003eAt Volunteer Audio, we understand these common frustrations, and we’ve created a solution that will revolutionize your riding experience. Our \u003cstrong\u003eVelocity Razor Stage 4 amplifier and speaker system\u003c\/strong\u003e combines powerful full-range audio with deep, musical bass to keep your music sounding incredible even at highway speeds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Choose the Volunteer Audio Stage 4 System?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Sound Clarity:\u003c\/strong\u003e The Velocity Razor system delivers powerful, clear audio with excellent vocal detail, crisp highs, and strong midbass so you can enjoy your favorite music even at highway speeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Upgrade:\u003c\/strong\u003e Keep your factory radio while dramatically improving your sound system. Our prewired Velocity Razor Pro amplifier is configured for optimal performance with your factory Skyline OS Infotainment radio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdded Low-End Performance:\u003c\/strong\u003e The American Hard Bag IP24SWEV Modular Subwoofer Kit adds the deep, musical bass that smaller motorcycle speakers simply can’t reproduce.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e The compact Velocity Razor Pro amplifier is designed for demanding motorcycle audio applications, while the Velocity Razor Coax Neo speakers are built to provide reliable, high-output performance in motorcycle environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat’s Included in the Stage 4 Package?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrewired Velocity Razor Pro RZP2000.6 Amplifier:\u003c\/strong\u003e Gains and filters are professionally adjusted specifically for your factory Skyline OS Infotainment radio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 Pair of Velocity Razor Coax Neo RCN65 6.5” Upper Fairing Speakers:\u003c\/strong\u003e High-output neodymium coaxial speakers designed to deliver crystal-clear vocals, detailed highs, and powerful midbass at highway speeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 Pair of Velocity Razor Coax Neo RCN65 6.5” Tour Pack Speakers:\u003c\/strong\u003e Matching high-output neodymium coaxial speakers that provide excellent rear fill and balanced sound for both rider and passenger.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmerican Hard Bag IP24SWEV Modular Subwoofer Kit:\u003c\/strong\u003e Complete modular bass system featuring the Velocity Performance Edition 10-inch subwoofer, engineered specifically for the American Hard Bag enclosure to deliver tight, musical bass with outstanding impact and low-frequency performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVelocity Razor Power\/Ground Harness:\u003c\/strong\u003e Ensures clean, reliable power and grounding for optimal amplifier performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolunteer Audio HD-A2B8 Interface:\u003c\/strong\u003e Seamlessly integrates with your Harley-Davidson®, expertly tuned for Velocity Razor systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Volunteer Audio?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-Configured Convenience:\u003c\/strong\u003e We do all the hard work for you. Your kit arrives with gains and filters already set, making installation straightforward.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep-by-Step Support:\u003c\/strong\u003e Our detailed videos guide you through the installation process from start to finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime Tech Support:\u003c\/strong\u003e We offer lifetime support for any items purchased from us, ensuring you have assistance whenever needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003eAmerican Hard Bag Modular Bass System\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eVelocity Performance Edition\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEngineered Specifically for the American Hard Bag Enclosure\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Velocity 10-inch subwoofer wasn’t selected from an existing catalog.\u003c\/p\u003e\n\u003cp\u003eIt was engineered specifically for the American Hard Bag enclosure, creating a system where the driver, enclosure, and passive radiator were developed together as a complete acoustic package.\u003c\/p\u003e\n\u003cp\u003eRated at \u003cstrong\u003e300 Watts RMS\u003c\/strong\u003e and \u003cstrong\u003e600 Watts Maximum Power\u003c\/strong\u003e, the Velocity subwoofer features an injection-molded cone, Santoprene surround, oversized 56-ounce ferrite motor, and a 38 mm TIL voice coil to deliver exceptional punch, musicality, and long-term reliability.\u003c\/p\u003e\n\u003cp\u003eIf your playlist is filled with country, rock, blues, classic rock, or live recordings, the Velocity Performance Edition delivers outstanding impact and natural musical accuracy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e Country, Rock, Classic Rock, Southern Rock, Blues, and Live Recordings\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Highlights:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e300 Watts RMS\u003c\/li\u003e\n\u003cli\u003e600 Watts Maximum Power\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 20-400 Hz\u003c\/li\u003e\n\u003cli\u003eInjection-Molded Cone\u003c\/li\u003e\n\u003cli\u003eSantoprene Surround\u003c\/li\u003e\n\u003cli\u003e38 mm TIL Voice Coil\u003c\/li\u003e\n\u003cli\u003e56 oz Ferrite Magnet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eExpect:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTight, punchy bass\u003c\/li\u003e\n\u003cli\u003eIncredible kick drum impact\u003c\/li\u003e\n\u003cli\u003eExcellent bass guitar definition\u003c\/li\u003e\n\u003cli\u003eFast transient response\u003c\/li\u003e\n\u003cli\u003eNatural, musical low frequencies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eHD-A2B8 Amplifier Replacement Interface\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Designed for Harley-Davidson models equipped with the Skyline OS Infotainment Unit.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePurpose:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Allows for the removal of the stock amplifier.\u003c\/p\u003e\n\u003cp\u003e• Facilitates the installation of higher power aftermarket amplifiers.\u003c\/p\u003e\n\u003cp\u003e• Maintains compatibility with factory-installed Rockford Fosgate subwoofers and rear-mounted secondary amplifiers.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Designed and manufactured by SeirenHD exclusively for Volunteer Audio.\u003c\/p\u003e\n\u003cp\u003e• Engineered and manufactured in the USA.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePre-Tuned for Plug-and-Play Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe HD-A2B8 interface from Volunteer Audio and SeirenHD is ready to install right out of the box—no tuning required for standard systems.\u003c\/p\u003e\n\u003cp\u003eAlready optimized for immediate use:\u003c\/p\u003e\n\u003cp\u003e• Flat EQ Curve – Delivers a clean, uncolored audio signal\u003c\/p\u003e\n\u003cp\u003e• Pre-Set Output Levels – Optimized to run clean at full volume with zero clipping\u003c\/p\u003e\n\u003cp\u003e• Speed-Controlled Volume – Fully retained and pre-configured to match factory behavior\u003c\/p\u003e\n\u003cp\u003e• Fader Support – Works immediately without any setup\u003c\/p\u003e\n\u003cp\u003e• All Factory Features Intact – Including navigation prompts, radio EQ selections, and more\u003c\/p\u003e\n\u003cp\u003eTuning is optional, only necessary when:\u003c\/p\u003e\n\u003cp\u003e• Activating crossovers\u003c\/p\u003e\n\u003cp\u003e• Using the 31-band or 10-band EQ to customize for specific speaker setups\u003c\/p\u003e\n\u003cp\u003e• Adjusting time alignment or per-channel output levels\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlug-and-Play Harnessing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe HD-A2B8 includes a harness that connects directly to all factory speaker wiring with zero modification to your motorcycle.\u003c\/p\u003e\n\u003cp\u003eFor expanded setups, additional plug-and-play harnessing is available below:\u003c\/p\u003e\n\u003cp\u003e• Underseat Harness – Pins into the factory plug on base model bikes\u003c\/p\u003e\n\u003cp\u003e• Lid Disconnect Harness – Clean, quick-disconnect solution for 6x9 lid speaker installations\u003c\/p\u003e\n\u003cp\u003e• Tour Pack Harness – Adds plug-and-play rear audio for Tour Pack installations\u003c\/p\u003e\n\u003cp\u003e• Lower Fairing Harness – Simple solution for adding speaker pods to your lower fairings\u003c\/p\u003e\n\u003cp\u003eAll harnessing options are pre-configured and labeled for quick installation and available for purchase below.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntegration Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Utilizes the OE A2B chip for seamless factory integration\u003c\/p\u003e\n\u003cp\u003e• Supports all factory infotainment updates\u003c\/p\u003e\n\u003cp\u003e• Retains full factory functionality, including:\u003c\/p\u003e\n\u003cp\u003e • Fader\u003c\/p\u003e\n\u003cp\u003e • EQ selections with DSP profile adjustments\u003c\/p\u003e\n\u003cp\u003e • Speed-controlled volume\u003c\/p\u003e\n\u003cp\u003e • Navigation prompts\u003c\/p\u003e\n\u003cp\u003e • Digital A2B subwoofer output for HD Audio by Rockford systems\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDSP Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• 10 Output Channels with Full DSP Control:\u003c\/p\u003e\n\u003cp\u003e • 8 Analog RCA Outputs\u003c\/p\u003e\n\u003cp\u003e • 2 Digital A2B Outputs (for Rockford subwoofers)\u003c\/p\u003e\n\u003cp\u003e• Equalization:\u003c\/p\u003e\n\u003cp\u003e • Per-channel 31-band graphic EQ or 10-band parametric EQ\u003c\/p\u003e\n\u003cp\u003e • Global 7-band parametric EQ mirrors infotainment custom EQ settings\u003c\/p\u003e\n\u003cp\u003e• Time Alignment:\u003c\/p\u003e\n\u003cp\u003e • Independent delay settings for every channel\u003c\/p\u003e\n\u003cp\u003e• Crossover Control:\u003c\/p\u003e\n\u003cp\u003e • Independent high-pass and low-pass filters per output pair\u003c\/p\u003e\n\u003cp\u003e• Level Adjustment:\u003c\/p\u003e\n\u003cp\u003e • Individual channel-level control for precise tuning\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• RCA Outputs:\u003c\/p\u003e\n\u003cp\u003e • 8 Channels, 4v RMS\u003c\/p\u003e\n\u003cp\u003e • Front, Rear, Subwoofer, and Auxiliary output configuration\u003c\/p\u003e\n\u003cp\u003e• Frequency Response: 20 Hz – 24 kHz\u003c\/p\u003e\n\u003cp\u003e• Signal-to-Noise Ratio: 112 dB\u003c\/p\u003e\n\u003cp\u003e• DSP Resolution: 32-bit\u003c\/p\u003e\n\u003cp\u003e• Operating Voltage: 6–28 volts\u003c\/p\u003e\n\u003cp\u003e• Current Draw:\u003c\/p\u003e\n\u003cp\u003e • Idle: 14 µA\u003c\/p\u003e\n\u003cp\u003e • Full Power: 300 mA\u003c\/p\u003e\n\u003cp\u003e• Warranty: 1 Year\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eReady to Elevate Your Ride?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAt Volunteer Audio, we’re committed to providing you with an amazing sound system for your Harley-Davidson®. Our \u003cstrong\u003eVelocity Razor Stage 4 package\u003c\/strong\u003e combines the Velocity Razor Pro amplifier, RCN65 Coax Neo speakers, and the \u003cstrong\u003eAmerican Hard Bag IP24SWEV Modular Subwoofer Kit\u003c\/strong\u003e to create a balanced, powerful audio system with true low-frequency impact.\u003c\/p\u003e\n\u003cp\u003eWith premium sound from the upper fairing and Tour Pack plus deep, musical bass from the Velocity Performance Edition subwoofer, this package delivers exceptional clarity, impressive output, and a much fuller listening experience.\u003c\/p\u003e\n\u003cp\u003eReady for a sound transformation? Let us help you get there!\u003c\/p\u003e","brand":"Velocity","offers":[{"title":"Default Title","offer_id":49074789155033,"sku":"HDPKG2009","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/7389\/9481\/files\/Velocity-stage4-TP-Limited-24Up-with-subwoofers.jpg?v=1786628612","url":"https:\/\/volunteeraudio.com\/products\/velocity-premium-a2b-stage-4-plug-play-amp-and-speaker-package-with-modular-subwoofer-kit-for-2026-harley-davidson%c2%ae-street-glide-limited-motorcycles","provider":"Volunteer Audio","version":"1.0","type":"link"}