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| During the focused R&D period of perfecting the PRO-X line, DS18 identified the opportunity to spawn off another line since there was a division amongst competition audiophiles and concert/"voceteo" audiophiles.
Therefore, DS18 created the PRO-X audio line, which features a wide variety of midranges that produce concert-like sounds that will knock the wind out of you! Highlights
Great For
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| Model: | PRO-X6.4BMSL |
| Type: | Midrange Loudspeaker |
| Size: | 6.5" |
| RMS Power: | 250W |
| MAX Power: | 500W |
| Frequency Response: | 125Hz - 8KHz |
| Impedance: | 4 Ohms |
| Sensitivity: | 93dB |
| Materials | |
| Surround: | Cloth Edge |
| Frame: | Red Steel Basket |
| Cone: | Non-Pressed Paper Cone |
| Magnet: | Ferrite |
| Voice Coil Wire: | KCCAW |
|
Measurements |
|
| Voice Coil Size: | 1.5" |
| Magnet Size: | 21 oz. |
| Mounting Depth: | 2.15" (54.5mm) |
| Cut-Out Dimension: | 5.63" (143mm) |


| SKU | PRO-X6.4BMSL |
|---|---|
| Nominal Diameter | 6.5" / 165mm |
| Nominal Impedance | 4 ohms |
| RMS Power Handling | 200W |
| MAX Power Handling | 400W |
| Sensitivity (1w/1m) | 93db |
| Frequency Response | 80Hz - 5KHz |
| Recommended HI Pass Crossover | 130Hz |
| Sold as | Single Unit |
| Grill Included | No |
| Voice Coil Diameter | 1.5" / 38.1mm |
| Voice Coil Former Material | Kapton |
| Winding Material | CCAW |
| Cone Material | Non-Pressed Paper |
| Bullet Material | Aluminum |
| Bullet Color/Finish | Glossy Red |
| Surround Material | Cloth |
| Basket Material | Steel |
| Basket Finish / Color | Glossy Red |
| Magnet Material | Ferrite |
| Magnet Weight | 21 Oz |
| Equivalent Volume Vas | 4.51L / 0.159ft3 |
| Excursion (one way) Xmax | 6.4mm |
| Free Air Resonance Fs | 140Hz |
| Mechanical Factor Qms | 6.59 |
| Electrical Factor Qes | 0.81 |
| Total Factor Qts | 0.72 |
| Mechanical Mass Mms | 6.92g |
| Mechanical Compliance Cms | 0.19mm/N |
| BL Factor BL | 4.99 |
| Voice Coil Inductance Le | 0.03mH |
| Cone Area Sd | 130.7Cm2 |
| DC Resistance Re | 3.3ohms |
| Overall Diameter | 6.65" / 169mm |
| Overall Depth | 2.36" / 60mm |
| Front Mount Baffle Cutout | 5.63" / 143mm |
| Mounting Depth | 2.15" / 54.5mm |
| Motor Diameter | 4.3" / 110mm |
Most products ship directly from our vendor warehouses or distributor network. Shipping times can vary depending on the brand, product size, availability, and destination.
Large or oversized items such as lift kits, wheels, tires, bumpers, exhaust systems, and audio enclosures may require additional handling time or freight shipping.
If there is ever an issue with availability, shipping cost, or delivery timing, we will contact you before moving forward with the order.
Returns may be accepted on most new, unused, unopened items within 30 days of delivery. Items must be in original packaging and in resellable condition.
Installed, used, damaged, missing-parts, electrical, special-order, clearance, or custom-built items may not be eligible for return.
Return shipping is normally the customer’s responsibility unless the return is due to our mistake, such as the wrong item being shipped.
Before sending anything back, please contact Kaos Offroad so we can review the order and provide return instructions. Returns sent without approval may be refused.
Some products are vehicle-specific. Please verify fitment before ordering. If you are unsure, contact us with your year, make, model, sub-model, and any relevant details before purchasing.
Original shipping charges, freight charges, and vendor restocking fees may be non-refundable depending on the item and supplier policy.


















