Diamond Audio HXM65FBK 6.5" 2-Way High Output Marine Speakers (2Ω or 4Ω)
Diamond Audio HXM65FBK 6.5" 2-Way High Output Marine Speakers (2Ω or 4Ω)
Couldn't load pickup availability
Additional Payment Info
-
Description
-
Reviews
Diamond Audio HXM65FBK 6.5" 2-Way High Output Marine Speakers (2Ω or 4Ω)
The Diamond Audio HXM65FBK is the 6.5-inch size in the HXM Black Series of marine coaxial speakers, with a 5.44 in cutout and 2.52 in mounting depth. It is sold here as a pair in 2Ω (HXM65F2BK) or 4Ω (HXM65F4BK) and is rated 150 W RMS / 450 W max per speaker.
6.5 in horn-loaded coaxial with a carbon fiber cone
It pairs an oversized titanium tweeter and a neodymium motor with a 2 in voice coil, in a 6.61 in overall diameter.
- Choose 2Ω (HXM65F2BK) or 4Ω (HXM65F4BK)
- 150 W RMS / 450 W max per speaker
- 5.44 in cutout, 2.52 in mounting depth
Key Product Details
| Brand | Diamond Audio |
| Series | HXM Black Series |
| Size | 6.5 inch coaxial |
| Impedance options | 2Ω (HXM65F2BK) or 4Ω (HXM65F4BK) |
| Sold as | Pair |
| Power | 150 W RMS / 450 W max per speaker |
| Cutout / depth | 5.44 in / 2.52 in |
| Application | Marine, per Diamond Audio listing |
Pick the impedance on the product page before adding to cart. Verify cutout, depth and amplifier match before ordering.
Carbon Fiber Cone and Oversized Titanium Tweeter
Diamond Audio lists a carbon fiber cone, a titanium diaphragm and a 1.5-inch oversized tweeter on the HXM Black Series. The motor is neodymium, the basket is fiberglass-reinforced polymer and the surround is rubber.
Sensitivity is 95 dB (1W/1M) with a 2-inch voice coil and a single coil winding.
Choosing 2Ω or 4Ω
Diamond Audio’s pages for both versions list the same cutout, depth and 150 W RMS / 450 W maximum power rating. The difference is the electrical load: 2Ω (HXM65F2BK) or 4Ω (HXM65F4BK).
Match the choice to your amplifier’s rated output at that impedance and to how many speakers share a channel. If you are unsure, send us the amplifier model and we will confirm before you order.
Planning a Marine System Around a 6.5-Inch Coaxial
Compare your amplifier’s RMS output per channel at 2Ω or 4Ω with the speaker’s power rating, then confirm the 5.44-inch cutout and 2.52-inch mounting depth against the panel or enclosure.
Pair it with a marine amplifier and, for deeper low end, a marine subwoofer. A marine digital sound processor handles tuning on multi-speaker boats.
HXM65FBK Specifications
| Model / SKU | HXM65FBK (variants: HXM65F2BK 2Ω pair, HXM65F4BK 4Ω pair) |
| Speaker size | 6.5 inches |
| Speaker type | Horn-loaded coaxial |
| Voice coils | Single |
| Voice coil diameter | 2 inches |
| Power handling (RMS) | 150 W |
| Power handling (max) | 450 W |
| Sensitivity (1W/1M) | 95 dB |
| Cone | Carbon fiber |
| Tweeter diaphragm | Titanium (1.5 inch oversized tweeter per Diamond Audio) |
| Motor | Neodymium |
| Basket | Fiberglass-reinforced polymer |
| Surround | Rubber |
| Re | 1.8 Ω |
| Fs | 105 Hz |
| Qts | 0.352 |
| Vas | 6.172 L |
| Xmax | 2.75 mm |
| Mounting depth | 2.52 in (64 mm) |
| Cutout diameter | 5.44 in (138.06 mm) |
| Overall diameter | 6.61 in (167.79 mm) |
| Overall height | 3.03 in (77.02 mm) |
Source: Diamond Audio HXM65F4BK and HXM65F2BK product pages (both versions list identical figures). Verify fitment before ordering.
Related Paths
HXM65FBK FAQ
What is the difference between the 2Ω and 4Ω HXM65FBK?
They are the same 6.5-inch speaker offered in two impedances: HXM65F2BK (2Ω) and HXM65F4BK (4Ω). Diamond Audio lists the same cutout, depth and 150 W RMS / 450 W maximum power for both. Choose based on your amplifier’s load rating.
What cutout and mounting depth does it need?
Diamond Audio lists a 5.44 inch (138.06 mm) cutout diameter and 2.52 inch (64 mm) mounting depth, with a 6.61 inch (167.79 mm) overall diameter.
How much power can it take?
Diamond Audio lists 150 W RMS and 450 W maximum power per speaker, for both the 2Ω and 4Ω versions.
What are the tweeter and cone made of?
The cone is carbon fiber and the tweeter diaphragm is titanium, described by Diamond Audio as an oversized 1.5-inch tweeter. The motor is neodymium.
Is a water resistance rating listed?
Diamond Audio sells this speaker as a marine speaker, but the water-resistance field on its spec sheet is blank, so we do not quote a rating. Ask us if exposure matters for your install.
Will it fit my boat or bike?
We do not list fitment by boat or bike model on this page. Measure for the 5.44 inch cutout and 2.52 inch depth, then start a consultation and we will confirm.
Need Help Choosing?
Not sure whether 2Ω or 4Ω suits your amplifier, or whether the 5.44 inch cutout and 2.52 inch depth work in your panel? Call us or start a consultation.