Rockville

MS40B Black 4" Marine Speakers + NA2-400.2 Amplifier Bundle

Name: MS40B Black 4" Marine Speakers + NA2-400.2 Amplifier Bundle
Brand: Rockville
SKU: MS40B+40KMMTES+NA2-400.2
Price: 219.85 USD
Availability: OutOfStock

4" IP56 Marine Speakers, 200W Pair, 2-Channel 400W Amp, Black Pods, Swivel Clamps

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$219.85

$219.85 ~~$0.00~~

Features

IP56 speakers for salt and fresh water
200W per pair peak, 50W RMS per pair
Aluminum swivel pods with black powder coat
MB Quart 2-channel marine amplifier
All clamps, inserts, and hardware included

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What's Included in the box

Pair Rockville MS40B 4" marine speakers (Black)
Pair Rockville MAC40B 4" aluminum swivel pods
MB Quart NA2-400.2 2-channel amplifier
Rubber clamp inserts (3/4"–1.5") and brackets
Mounting hardware and wiring pigtails

SKU: SKU: MS40B+40KMMTES+NA2-400.2

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Product Description

Built to thrive on the water or trail, this bundle pairs compact 4" IP56 marine speakers with rugged aluminum swivel pods and a 400W 2‑channel marine amplifier. Add punchy, clear sound to ATVs, UTVs, boats, and carts with weather-ready components and clean internal wiring. The black powder‑coat finish and sealed design resist UV, moisture, and vibration, while swivel clamps let you aim sound where it matters. A confident, space‑saving upgrade for refined outdoor audio.

This Bundle Includes

MS40B

Rockville MS40 4" marine speakers deliver 200W peak power and waterproof durability in a sleek design. With anti-UV ABS construction, rustproof hardware, and a polypropylene cone, these speakers provide clear, powerful sound and lasting performance—ideal for boats, outdoor spaces, or car audio systems.

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MAC40B

The MAC40 4" aluminum speaker pods combine a sophisticated finish with rugged 6061 aluminum construction. Featuring 360° swivel clamps and waterproof design, they fit bars from 3/4" to 1.5". Enjoy powerful, clear sound and flexible mounting—ideal for ATVs, UTVs, and marine audio enthusiasts seeking premium performance.

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NA2-400.2

The MB Quart NA2 400.2 2-channel amplifier powers Polaris, ATV, UTV, RZR, and cart systems with full-range Class D performance. Marine-grade protection, Q-Stasis preamp circuitry, and ABYC/ASTM certification suit harsh environments. Switchable crossovers, gold-plated connections, and quick-disconnect wiring create a refined yet rugged power core for outdoor audio.

Features

Weather-Ready Audio
IP56 speakers and marinized aluminum pods resist UV, water, and corrosion for reliable performance on boats, ATVs, and carts.
Clean, Focused Sound
Injection‑molded cones and PEI tweeters deliver crisp highs and balanced mids for clear playback at speed or anchor.
Compact Power
Full‑range Class D 2‑channel amp supplies stable output with low heat, maximizing volume without consuming space.
Flexible Mounting
360° swivel clamps and multiple inserts fit 3/4"–1.5" bars, letting you aim sound precisely and secure a tight, rattle‑free fit.
Durable Build
6061 aluminum pods with black powder coat resist chips and fading, preserving sharp aesthetics season after season.

MS40B Black 4" Marine Speakers + NA2-400.2 Amplifier Bundle

Technical Specifications

Product Type 4" marine speaker and amplifier bundle
Speaker Power (Peak/Pair) 200 W
Speaker Power (RMS/Pair) 50 W
Impedance 4 ohm
Frequency Response 122 Hz–20 kHz
Sensitivity 85 dB @1W/1m
Waterproof Rating IP56
Amplifier Topology Full-range Class D, 2-channel
Amplifier Power 200 W x2 @2Ω, 100 W x2 @4Ω
Clamp Fitment 3/4"–1.5" bars, 360° swivel
Weight Speaker ship wt 1.76 lb (pair); Amp 2.12 lb
Dimensions Amp 3.70 x 5.51 x 1.77 in; Speaker cutout 3.66 in

MS40B Black 4" Marine Speakers + NA2-400.2 Amplifier Bundle