Rockford Fosgate M1-8B M1 Series 8" 150W RMS (600W Peak Power Handling) at 4 Ohms, 2-way Coaxial Marine/Powersports Speaker
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What's Inside?
- • (2) 8" M1 Series 2-way Coaxial Marine/Powersports Speaker
- • (2) 11" LED power harnesses with 4-pin Deutsch connectors on one end
- • (12) 1-5/8" Stainless steel Allen head screws
- • (2) 3mm Allen head bits
- • (1) 3.5mm Drill bit
- • (1) Rockford Fosgate contact information
- • Owner's Manual
Why Choose Rockford Fosgate M1-8B Marine Speakers?
Built for the Harshest Adventures
The Rockford Fosgate M1-8B Coaxial Marine and Powersports Speaker is designed for people who take their sound systems far beyond normal driving conditions. Built and tested using ASTM B117 salt fog and ASTM G154 UV standards, it is made to survive constant sun exposure, moisture, and corrosion without losing performance. Whether it is mounted on a boat, UTV, or outdoor rig, this speaker is ready for environments that would destroy ordinary audio gear.
Big Sound With Precision Engineered Clarity
This speaker delivers powerful and accurate audio thanks to its 1-inch LCP balanced dome tweeter system, designed for clean high-frequency output with minimal distortion. The bridge-mounted design improves airflow and reduces obstruction, allowing the highs to stay crisp even at higher volume levels. Paired with VAST surround technology, it increases effective cone area for stronger output and better efficiency without needing a larger speaker size.
Clean Installation With Smart Internal Design
Inside the M1-8B, a concealed ICC crossover network keeps everything protected and neatly integrated into the speaker basket. This 6 dB per octave crossover helps simplify installation while maintaining proper frequency separation for smooth, balanced sound. Add in Klippel verified engineering, and you get a speaker that is precisely tuned for accurate response, reduced distortion, and dependable long-term performance.
Style, Durability, and Marine Grade Reliability
The M1-8B also brings visual impact with dynamic RGB LED lighting that can be customized into multiple colors like red, green, blue, aqua, pink, yellow, and white. Dual connection options including quick slide terminals and waterproof Deutsch connectors give you flexible, secure wiring for any setup. Finished with corrosion-resistant stainless steel hardware, this speaker is built to stay strong, sound great, and look good no matter where your next adventure takes you.
Frequently Asked Questions (FAQ)
- • Why does the bass sound weaker than I expected?
Open-air marine installations naturally provide less low-frequency reinforcement than enclosed spaces. Check speaker polarity, mounting, and amplifier power, and consider adding a dedicated marine subwoofer.
- • Can I power these speakers directly from my factory head unit?
They can operate from a compatible head unit, but they are rated for 150 watts RMS. An appropriately matched amplifier can provide substantially more clean output and headroom.
- • Why do they distort when I increase the volume?
Distortion can come from amplifier clipping, excessive gain, or aggressive equalizer settings. Lower the gain and bass boost, then verify the amplifier is producing a clean signal.
- • Why don't they fit my existing 8-inch speaker opening?
An 8-inch nominal size does not guarantee identical mounting dimensions. The published mounting depth is about 3.3 inches, so measure the cutout, depth, and bolt pattern before installation.
- • Why aren't the Color Optix lights turning on?
The lighting has its own electrical requirements and uses the integrated RGB connection. Check the 9–16V supply, ground, connectors, and fuse before assuming the speaker is defective.
- • Do I need the Color Optix controller to use the speakers?
No, the speakers can operate as normal audio speakers without the lighting controller. The PMX-RGB controller and RF Connect App are required when you want full Color Optix lighting control.
- • Why is one speaker louder than the other?
Check the speaker polarity, wiring, amplifier channels, and source balance first. Swapping the left and right connections can reveal whether the problem follows the speaker or the channel.
- • Why do I hear rattling or vibration after installation?
Loose hardware or an uneven mounting surface can create unwanted vibration. Tighten the stainless-steel mounting hardware evenly and make sure the speaker sits securely against the mounting surface.
- • Can these handle a high-powered marine amplifier?
Yes, the speakers are rated at 150 watts RMS and 600 watts peak at 4 ohms. Proper amplifier matching and gain adjustment are important to avoid clipping and long-term speaker damage.
- • Why did the speakers stop working after a wiring or installation change?
Incorrect installation is a common cause of apparent product failures. Check the speaker and RGB connectors, polarity, power connections, and wiring before replacing the speakers.
- Diameter : 8 Inch
- Sensitivity : 92 dB
- Impedance : 4 Ohm
- Frequency Response : 35-22000 Hz
- Peak Power Handling : 600 Watts
- Color : Black
- RMS Power Handling : 150 Watts
Features:
- Heavy Duty Marine Certified Coaxial Speaker Platform: The Rockford Fosgate M1-8B is engineered for extreme marine environments using ASTM B117 salt fog and ASTM G154 UV testing standards to ensure long lasting durability against corrosion, sunlight exposure, and harsh outdoor conditions.
- High Strength LCP Balanced Dome Tweeter System: Features 1 inch liquid crystal polymer dome tweeters with bridge mounted design for improved airflow, reduced obstruction, and accurate high frequency reproduction with high strength and low mass performance.
- Dynamic Multi Color LED Illumination Integration System: Equipped with red, green, and blue LED lighting that can be individually controlled or combined to produce multiple color outputs including yellow, pink, aqua, and white with optional external LED controller support.
- Integrated Concealed ICC Crossover Network Design: Utilizes a built in 6 dB per octave crossover system housed within the basket structure for simplified installation, improved protection, and a clean factory style appearance.
- Advanced VAST Surround Cone Area Expansion Technology: Implements Vertical Attach Surround Technique to increase effective radiating surface area without enlarging the speaker basket, improving efficiency and overall acoustic output.
- Precision Klippel Verified Acoustic Optimization Engineering: Uses laser based Klippel measurement systems to refine motor structure alignment, suspension behavior, and voice coil performance for reduced distortion and improved sound accuracy.
- Marine Grade Dual Connection Terminal System: Includes standard quick slide terminals and 2 pin waterproof Deutsch connectors for secure, corrosion resistant wiring flexibility in demanding marine and powersports installations.
- Corrosion Resistant Stainless Steel Mounting Hardware Construction: Built with stainless steel fasteners to ensure long term resistance to rust and corrosion, maintaining structural integrity in high moisture and saltwater environments.
Specifications:
- Speaker Type: 2-way Coax
- Midrange Size (Nominal Diameter): 8"
- Power Handling (RMS)
- 150 Watts RMS
- 600 Watts PEAK
- Nominal Impedance (Ohms): 4-Ohms
- Midrange Mounting Depth: 3.3" (83.9 mm)
- Tweeter Size: 1" (25.4 mm)
- Crossover: High Pass: 6dB/Octave
- Sensitivity (dB @ 1W/1M): 92
- Sensitivity (dB @ 2.83V/1M): 92
- Frequency Response (Hz): 35 Hz - 22 kHz
- Mounting Hardware: Stainless Steel
- Grille/Trim Ring Included: Yes
- Shipping Weight: 9.25 Lbs. (4.20 Kg.)
- Optically clear UV stable RGB Lighting Encapsulation
- Multiplexed RGB Input
- 1" (25mm) High Temp Kapton™ Woofer Voice Coil Former
- Grill Integrated 1" (25 mm) LCP Balanced Dome Tweeter
- Ultra-Bright, Wide Angle Tri-Color Surface Mount LED's with Flat Mold Lenses
- Sealed motor design
- Zinc Nickel-plated Marine grade brass connection terminals
- 100% UV Stable ASA plastic frame & grille design stands up to harsh marine environment
- Proprietary Dual Function Input Terminals
- Integrated Deutsch RGB and Speaker receptacles
- Linear Synthetic Fiber Blend Spiders
- Santoprene VAST Surround
- VAST vertical attach surround technique increases effective radiating cone area up to 25%
- Co-molded surround and mineral filled polypropylene cone body
- 6dB/Octave crossover network
- Fully sealed integrated concealed crossover (ICC) network
- 2-Year Warranty
- UPC: 780687354305
- Weight: 10
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
