Description
DS18 8PRO400MR-4
The DS18 8PRO400MR‑4 is an 8″ high‑sensitivity professional mid‑range loudspeaker engineered for loud, clear mid‑frequency performance in car audio systems and custom builds. With a 4 ohm impedance, 200 W RMS continuous power handling and 400 W peak power capacity, this speaker delivers dynamic mid‑range output with minimal distortion and strong projection.
Specifications
| Parameter | Value |
|---|---|
| SKU | 8PRO400MR-4 |
| Nominal Diameter | 8″ / 203 mm |
| Nominal Impedance | 4 Ω |
| RMS Power Handling | 200 W |
| Max Power Handling | 400 W |
| Sensitivity (1w/1m) | 104 dB |
| Frequency Response | 100 Hz – 12.5 kHz |
| Recommended High-Pass Crossover | 160 Hz |
| Sold As | Single |
| Grill Included | No |
Features
| Feature | Details |
|---|---|
| Interleaved Sandwich Voice Coil (ISV) | No |
| Demodulating Rings | Copper Ring |
| Improved Heat Dissipation | No |
| Cone Shape | Curvilinear |
| Speaker Terminals | Push 8ga |
Motor Specifications
| Parameter | Value |
|---|---|
| Voice Coil Diameter | 1.5″ / 38.6 mm |
| Voice Coil Former Material | Til |
| Winding Material | CCAW |
| Cone Material | Paper |
| Dust Cap Material | Paper |
| Bullet Material | N/A |
| Bullet Color/Finish | N/A |
| Surround Material | Cloth |
| Spider Diameter | 4″ / 102 mm |
| Leads Connection Type | Spider Crossed |
| Basket Material | Steel |
| Basket Finish | Black |
| Magnet Material | Ferrite |
| Magnet Weight | 40 Oz |
| Displacement Volume | 0.56 L / 0.02 ft³ |
Thiele & Small Parameters
| Parameter | Value |
|---|---|
| Equivalent Volume (Vas) | 37.3 L / 1.31 ft³ |
| Excursion (Xmax) | 0.75 mm |
| Free Air Resonance (Fs) | 70 Hz |
| Mechanical Factor (Qms) | 4.31 |
| Electrical Factor (Qes) | 0.34 |
| Total Factor (Qts) | 0.32 |
| Mechanical Mass (Mms) | 12.72 g |
| Mechanical Compliance (Cms) | 0.43 mm/N |
| BL Factor | 7.44 |
| Voice Coil Inductance (Le) | 0.03 mH |
| Cone Area (Sd) | 246.06 cm² |
| DC Resistance (Re) | 3.5 Ω |
| Mechanical Mass w/o Air (Mmd) | 12.5 g |
Measurements
| Parameter | Value |
|---|---|
| Overall Diameter | 8.19″ / 208 mm |
| Overall Depth | 3.72″ / 94.6 mm |
| Front Mount Baffle Cutout | 7.36″ / 187 mm |
| Mounting Depth | 3.48″ / 88.5 mm |
| Motor Diameter | 5.1″ / 130 mm |
Product Overview
DS18 8PRO400MR-4!
Get superior sound with DS18’s 8PRO400MR-4!
With its 8″ nominal diameter and 4 OHMS nominal impedance, the 8PRO400MR-4 delivers exceptional performance and clarity. The RMS power handling of 200W and MAX power handling of 400W, guarantee powerful sound reproduction.
One standout feature of DS18’s 8PRO400MR-4 is its high sensitivity rating of 104 dB, allowing it to effortlessly fill any space with rich, immersive sound. The frequency response range of 100Hz-12.5KHz ensures that every beat is reproduced accurately.
What sets the 8PRO400MR-4 apart is its demodulating rings made of copper. These rings play a crucial role in substantially reducing harmonic and intermodulation distortion associated with voice coil displacement. They also minimize the modulation of magnetic flux during the movement of the voice coil, ensuring a more linear variation of system inductances as input current varies. This results in a cleaner sound output, providing an enhanced audio experience.
The curvilinear cone shape enhances overall dispersion while maintaining optimal performance. The push speaker terminals make installation hassle-free, allowing for secure connections without compromising on sound quality.
DS18’s 8PRO400MR-4 has one of the most impressive motor configurations in our catalog. Its 1.5″ voice coil diameter, made of Til material, ensures excellent heat dissipation for extended playtime without any compromise in performance.
Experience audio excellence with DS18’s 8PRO400MR-4!
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