Boss Audio MR43B 4" 3-Way Enclosed System Speakers, Black, Pr.
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Overview
Weatherproof enclosed 4" 3-way system speakers designed for durable outdoor and marine environments. This pair handles up to 200 Watts MAX per pair (100 Watts RMS), with an 80 Hz to 18 kHz range and 85 dB sensitivity, delivering clear sound in challenging conditions.
Key Features
- Weatherproof enclosed system for harsh environments
- 200 Watts MAX per pair (100 Watts RMS) power handling
- 80 Hz – 18 kHz frequency response with 85 dB sensitivity
- Polypropylene woofer cone with rubber surround
- 1 inch tweeter and 1.5 inch poly cone midrange per speaker
- 4" 3-way enclosed system per pair
Compatible Applications
- Marine vessels and boats
- Outdoor patios, decks, and all-weather installations
- Enclosed speaker installations for rugged environments
- General outdoor audio setups requiring weatherproof performance
Product Details
- Enclosure type: Enclosed system
- Speaker size: 4" (per speaker)
- Power handling: 200 Watts MAX per pair (100 Watts RMS)
- Frequency response: 80 Hz – 18 kHz
- Sensitivity: 85 dB
- Woofer: Polypropylene cone with rubber surround
- Midrange: 1.5" poly cone per speaker
- Tweeter: 1" per speaker
- Weight: 3,357 g
- SKU: 153-MR43B
Parts Desk Insights
Best Use Case: Weatherproof 4", 3-way enclosed speakers are ideal for marine and outdoor installations where durability and all-weather performance are required.
Common Issues: Common issues include moisture intrusion if mounting seals are not watertight, improper enclosure mounting that affects bass response, and wiring polarity or impedance mismatches affecting sound quality.
Related Products & Accessories
- Browse related products in the Speakers & Audio category - Explore other weatherproof and marine-grade speakers in the Speakers & Audio category.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.