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- 6.5-inch two-way marine speaker pair
- 75 watts RMS per speaker
- IPX5-rated marine construction
- Integrated seven-color RGB LED lighting
- Bridge-mounted balanced-dome tweeters
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The Infinity 622MLT is a pair of 6.5-inch, two-way marine coaxial speakers designed for boats and other open-air installations. It combines full-range audio with integrated RGB LED lighting in a titanium-color finish. The speakers are intended for installations exposed to sun, salt spray, washdowns, and changing weather conditions.
These speakers help replace aging factory marine speakers or add sound to a new boat, personal watercraft, or outdoor audio project. Their 4-ohm nominal impedance allows connection to compatible marine receivers or amplifiers. With 75 watts RMS handling per speaker, they are suited to systems that need more output than a basic low-power source can provide.
A polypropylene woofer cone and rubber surround support durable operation while reproducing bass and midrange. The balanced-dome tweeter is bridge mounted to the grille rather than mounted through the woofer cone. This design helps seal the front of the woofer and helps protect the motor structure from water intrusion.
The 622MLT is IPX5 rated and uses marine-oriented construction including a sealed motor structure, sealed magnet, and UV-resistant one-piece cast-polymer basket. Its specified frequency response is 50 Hz to 20 kHz, with 92 dB sensitivity measured at 2.83V/1m. The result is a full-range speaker designed for the acoustic demands of open-air listening.
Integrated RGB LED lighting provides visual accent lighting around each speaker. The included pigtail harness supports manual hardwired color selection, while an external lighting controller may also be used. Pair the 622MLT with a compatible marine source unit or amplifier, proper speaker wiring, and a suitable 6.5-inch mounting location for a complete installation.
Key Features
- Marine-Rated Construction: IPX5-rated design is built for harsh outdoor environments.
- 75W RMS Handling: Supports compatible marine receiver or amplifier power.
- Two-Way Coaxial Design: Combines woofer and tweeter in each speaker.
- RGB LED Lighting: Adds selectable accent lighting to the installation.
- Balanced-Dome Tweeter: Delivers high frequencies from a grille-mounted design.
- Polypropylene Woofer Cone: Provides durable bass and midrange reproduction.
Design & Installation
The 622MLT uses a titanium-color polymer grille, UV-resistant one-piece cast-polymer basket, polypropylene cone, rubber surround, and sealed magnet structure. Its bridge-mounted tweeter is positioned on the grille to help keep water from passing through the woofer cone. Stainless-steel mounting hardware and foam gaskets are included for marine installation.
Confirm that the mounting surface accepts a 5-1/16-inch cutout and allows 2-11/16 inches of mounting depth before installation. Connect each speaker to a compatible 4-ohm amplifier or receiver channel, observing correct speaker polarity. For lighting, use the supplied RGB pigtail harness with manual hardwiring or a separately sourced external lighting controller.
| Model | 622MLT |
|---|---|
| UPC | 050667371913 |
| Product Type | Two-way marine audio multi-element speaker |
| Speaker Size | 6-1/2 in. (160 mm) |
| Quantity | Pair |
| Finish | Titanium |
| Continuous Power Handling | 75W RMS per speaker |
| Peak Power Handling | 225W per speaker |
| Nominal Impedance | 4 ohms |
| Sensitivity | 92 dB @ 2.83V/1m |
| Frequency Response | 50 Hz–20 kHz |
| Crossover Point | 3.5 kHz |
| Tweeter Type | Balanced dome |
| Tweeter Mounting | Bridge mounted on grille |
| Woofer Cone Material | Polypropylene |
| Surround Material | Rubber |
| Basket Material | UV-resistant one-piece cast polymer |
| Motor Structure | Sealed |
| Magnet | Sealed |
| Water Resistance Rating | IPX5 |
| Lighting | Integrated multi-color RGB LED |
| Hardwired RGB Color Options | 7 |
| RGB Positive Lead | Black, +12V |
| RGB Ground Leads | Red, green, and blue |
| External Diameter | 7-1/16 in. (178 mm) |
| Mounting Cutout Diameter | 5-1/16 in. (128 mm) |
| Mounting Depth | 2-11/16 in. (67 mm) |
| Mounting Hole Diameter | 5 mm |
| Force Factor (BL) | 5.69 Tm |
| DC Resistance (DCR) | 3.6 ohms |
| Moving Mass (Mms) | 12.27 g |
| Effective Cone Area (Sd) | 122.72 cm² |
| Mechanical Compliance (Cms) | 328 µm/N |
| Equivalent Compliance Volume (Vas) | 6.95 L |
| Resonant Frequency (Fs) | 79.30 Hz |
| Electrical Q (Qes) | 0.67 |
| Mechanical Q (Qms) | 11.16 |
| Total Q (Qts) | 0.63 |
| Grilles | Included |
| Mounting Hardware | Stainless steel |
| Included Mounting Screws | 10 |
| Included Speed Clips | 10 |
| Foam Gaskets | 2 included |
| RGB Pigtail Harnesses | 2 included |
| Quick-Start Guide | Included |
This product uses a 6-1/2" speaker size. Pick your vehicle to see the factory locations it fits.
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Will these fit a standard 6.5-inch speaker opening?
The 622MLT requires a 5-1/16-inch mounting cutout and 2-11/16 inches of mounting depth. Verify both measurements and screw-hole placement on the mounting surface before ordering.
How much amplifier power should I use?
Each speaker is rated for 75 watts RMS and 225 watts peak at 4 ohms. Use a compatible amplifier or receiver channel designed to drive a 4-ohm speaker.
Are the RGB lights controlled from the speaker?
The included RGB pigtail harness supports manual hardwired color selection. An external lighting controller can also be used, but it is not included.
How many RGB colors are available with hardwiring?
Manual hardwiring provides seven available colors: red, green, blue, yellow, purple, aquamarine, and white. The black lighting lead is +12V, while the red, green, and blue leads are ground connections.
What is included with the pair?
The package includes two speakers with grilles, stainless-steel mounting hardware, two foam gaskets, two RGB lighting pigtail harnesses, and a quick-start guide. The installation manual also identifies ten screws and ten speed clips.
Can these speakers be used in a marine environment?
Yes. The 622MLT is IPX5 rated and uses marine-grade materials including a sealed motor structure, sealed magnet, polymer basket, and rubber surround. IPX5 indicates protection against water jets; it does not indicate submersion capability.
Shipping
- Free 2nd-Day Air shipping on this item
- FREE Next-Day Air on orders over $499
- Orders placed on business days are typically processed the same day, delivery estimates are shown at checkout.
Warranty & Returns
- Authorized Dealer — 100% authentic products with full manufacturer warranty
- 60-Day Returns — Hassle-free returns, see our return policy for details
- Price Match Guarantee — We match verified prices, see policy for terms

Infinity 622MLT 6.5" RGB LED Marine Coaxial Speakers


















