MS40B Black 4" Marine Speakers + MUD50.2 Amplifier Bundle
1
/
of
11
Rockville
MS40B Black 4" Marine Speakers + MUD50.2 Amplifier Bundle
MS40B Black 4" Marine Speakers + MUD50.2 Amplifier Bundle
4" IP56 Marine Speakers, 1 Pair, Compact 2-Channel Amp, Weather-Resistant
Free Shipping
Regular price
$169.95
Sale price
$169.95
Regular price
$0.00
Unit price
/
per
Features
- Compact IP56 4" speakers with UV-safe grills
- MUD50.2 Class D 2-channel amplifier
- Fixed 80 Hz HPF for clean mids/highs
- Moisture-resistant design and pigtail wiring
- Mounting screws and clips included
Couldn't load pickup availability
What's Included in the box
- Pair Rockville MS40B 4" marine speakers (Black)
- MTX MUD50.2 2-channel amplifier
- Speaker mounting screws and speed clips
- Amplifier wiring pigtail
- Basic installation hardware
SKU: SKU: MS40B+MUD50.2
View full details










Product Description
A minimalist, weather‑ready upgrade for powersports and marine sound. The IP56 4" speakers deliver crisp highs and balanced mids, while the compact Class D amp fits tight spaces and runs cool. Fixed 80 Hz HPF trims low‑end resonance for cleaner output on bars, dashes, or cabins. Ideal for clean, reliable audio on small boats, ATVs, UTVs, and carts.
Features
Space-Saving Power
Micro chassis Class D amplifier supplies stable output with low heat in cramped installs.
Outdoor Durability
IP56 drivers and conformal‑coated electronics resist spray, dust, and UV exposure.
Tuned for Clarity
Fixed 80 Hz high‑pass filtering focuses power on mids and highs for articulate sound.
Simple Integration
High/low‑level inputs and pigtail harness ease connection to factory or add‑on sources.
Clean Aesthetics
Low‑profile speaker design blends with cabins and pods for a refined, factory‑like look.
Technical Specifications
- Product Type 4" marine speaker and compact 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 Power 50 W x2 @2Ω, 25 W x2 @4Ω
- Amplifier Crossover Fixed HPF @80 Hz, 12 dB/Oct
- Inputs High and low level
- Weight Speaker ship wt 1.76 lb (pair)
- Dimensions Amp 3.64 x 2.85 x 1.73 in; Speaker cutout 3.66 in