Description
DS18 PRO-SM69.4
The DS18 PRO-SM69 series speakers are high-performance 6×9-inch midrange loudspeakers designed for car audio enthusiasts who demand loud, clear, and aggressive sound output. Engineered with a durable steel basket, high-temperature voice coil, and rigid lightweight cone, these speakers deliver powerful midrange projection with excellent efficiency and minimal distortion at high volumes. Ideal for door panels, rear decks, or custom pro-audio builds, the PRO-SM69 series is perfect for daily driver upgrades and SPL-focused systems. Built to handle demanding audio environments, they provide strong vocal clarity and punchy mid frequencies for a dynamic in-car listening experience.
Specifications
| Parameter | Value |
|---|---|
| Nominal Diameter | 6×9″ / 152 × 228 mm |
| Nominal Impedance | 4 Ohms |
| RMS Power Handling | 250 W |
| MAX Power Handling | 500 W |
| Sensitivity (1w/1m) | 96 dB |
| Frequency Response | 60 Hz – 5 kHz |
| Recommended Hi-Pass Crossover | 120 Hz |
| Sold | Single |
| Grill Included | No |
| Voice Coil Water Protection | No |
| Water-Resistant Rating | N/A |
Motor & Construction
| Component | Specification |
|---|---|
| Voice Coil Diameter | 1.5″ / 38.1 mm |
| Voice Coil Former Material | Kapton |
| Winding Material | CCAW |
| Cone Material | Water-Resistant Paper |
| Surround Material | Coated Cloth |
| Basket Material | Steel |
| Basket Color / Finish | Gloss Red |
| Magnet Material | Ferrite |
| Magnet Weight | 33 Oz |
Thiele & Small Parameters
| Parameter | Value |
|---|---|
| Equivalent Volume (Vas) | 10.87 L / 0.383 ft³ |
| Excursion (Xmax, one way) | 1.3 mm |
| Free Air Resonance (Fs) | 110 Hz |
| Mechanical Q (Qms) | 7.186 |
| Electrical Q (Qes) | 0.947 |
| Total Q (Qts) | 0.832 |
| Mechanical Mass (Mms) | 13.102 g |
| Mechanical Mass (w/o Air) | 11.85 g |
| Mechanical Compliance (Cms) | 156.274 mm/N |
| BL Factor | 4.46 |
| Voice Coil Inductance (Le) | 0.36 mH |
| Cone Area (Sd) | 212.6 cm² |
| DC Resistance (Re) | 3.2 Ohms |
Measurements
| Measurement | Value |
|---|---|
| Overall Diameter | 6.45 × 9.2″ / 164 × 234 mm |
| Overall Depth | 3″ / 78 mm |
| Front Mount Baffle Cutout | 5.7 × 8.6″ / 145 × 218 mm |
| Mounting Depth | 2.83″ / 72 mm |
| Motor Diameter | 4.72″ / 120 mm |
Product Overview
6×9” Shallow Water-Resistant Midrange Loudspeaker
Our PRO-SM69.4 is tuned to cut through all noise in motorcycle and off-road applications: where volume, clarity, and durability matter most.
All-Weather Midrange Muscle
Rated at 250W RMS and 500W MAX with an ultra-efficient 96dB sensitivity, the PRO-SM69.4 delivers full-range midbass and sharp vocals. Its wide 60Hz–5KHz frequency response ensures everything from low punch to clean midrange comes through accurately.
Durable by Design
Built with a water-resistant paper cone, coated dust cap, and cloth edge surround, the PRO-SM69.4 is made to handle the abuse of the road.
Fits Just Right
With a shallow 2.83” mounting depth and 5.7” x 8.6” cutout diameter, the PRO-SM69.4 drops easily into most fairings, doors, or custom pods.
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