UT65B 2-Pack + NA2-500.5 Bundle
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Rockville
UT65B 2-Pack + NA2-500.5 Bundle
UT65B 2-Pack + NA2-500.5 Bundle
6.5" IPX6 Rollbar Speakers, 5-Channel Marine Amp, Mounts
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Regular price
$423.90
Sale price
$423.90
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Features
- 5-channel Class D amp with sub channel
- IPX6 tower speakers for open cabins
- 360° swivel brackets for precise aim
- Conformal-coated boards resist corrosion
- Includes mounting hardware
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What's Included in the box
- (2) UT65B 6.5" Rollbar Speakers
- MB Quart NA2-500.5 5-Channel Amplifier
- Swivel Mounting Brackets (1.5"–2")
- Installation Hardware
SKU: SKU: (2) UT65B+NA2-500.5
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Product Description
A refined, expandable foundation for powersports audio. Drive a front and rear stage with dedicated sub power from a compact, marine-certified 5‑channel amplifier feeding IPX6 6.5" tower speakers. The result is rich, controlled sound that complements aggressive styling and stands up to water, UV, and dust.
This Bundle Includes

UT65B
The UT65B delivers 400W peak and robust sound in a water-resistant, shockproof design. With 360° swivel aluminum brackets, rustproof hardware, and UV protection, these speakers are engineered for marine, UTV, and ATV use—offering premium audio and rugged durability for any outdoor adventure.
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NA2-500.5
Delivering 500W of clean, full-range audio, the MB Quart NA2-500.5 powers four channels and a dedicated subwoofer. Marine-grade, low-noise, and easy to install, it’s engineered for ATV/UTV/RZR setups, offering durable aluminum heat sinks, quick-release connectors, and a wired bass remote for precise control in rugged, high-performance environments.
Features
System Scalability
Dedicated subwoofer channel supports future bass upgrades while maintaining a clean front/rear stage.
Clean, Efficient Power
Class D topology supplies 4 x 80W + 1 x 200W @ 2Ω for confident volume with minimal heat.
Outdoor Acoustic Tuning
Two-way speakers with polypropylene cones and PEI tweeters project clear, lively sound in open air.
Marine-Grade Reliability
Conformal-coated boards, sealed connections, and UV-resistant housings keep audio pristine season after season.
Tailored Fit
Swivel brackets fit 1.5"–2" bars, aligning the soundstage where riders gather.

Technical Specifications
- Type UTV/ATV Marine Speaker + 5-Channel Amplifier
- Water Resistance Speakers IPX6; Amplifier IPX5
- Amp Power 4 x 80W + 1 x 200W @ 2Ω; 4 x 40W + 1 x 100W @ 4Ω
- Frequency Response Speakers 60Hz–20kHz; Amp 20Hz–20kHz
- Mount Compatibility 1.5", 1.75", 1.875", 2" Bars
- Color/Finish Black Enclosures, Aluminum Brackets
- Weight Amp 3.35 lb; Each Speaker ~4 lb
- Dimensions Speaker 9.84" x 7.17" x 7.32"; Amp 3.70" x 5.51" x 1.77"