Description
DS18 PRO-INS6.4
The DS18 PRO-INS6.4 is a high-quality 6.5-inch dual 4-ohm high-excursion subwoofer designed for car audio enthusiasts seeking deep, punchy, and accurate low-frequency performance. Rated at 400 W RMS and 800 W peak power handling, this subwoofer delivers strong, controlled bass with excellent efficiency. Its durable construction ensures reliability for daily driver systems, custom SPL builds, or high-performance audio setups. Ideal for both sealed and ported enclosures, the PRO-INS6.4 provides clean, powerful low-end response down to approximately 40 Hz, making it perfect for compact car audio systems that demand maximum impact in a small package.
Specifications
| Specification | Value |
|---|---|
| Nominal Diameter | 6.5 Inch / 167 mm |
| Nominal Impedance | 4 Ohms |
| RMS Power Handling | 120 W |
| Max Power Handling | 240 W |
| Sensitivity (1W/1M) | 95 dB |
| Frequency Response | 80 Hz – 6 kHz |
| Recommended Hi-Pass Crossover | 120 Hz |
| Sold As | Single |
| Grill Included | Yes, with Cloth Protection |
MOTOR & CONE SPECIFICATIONS
| Specification | Value |
|---|---|
| Voice Coil Diameter | 1.5 Inch / 38.6 mm |
| Voice Coil Former Material | KSV |
| Winding Material | CCAW |
| Cone Material | Paper |
| Surround Material | Cloth |
| Basket Material | Steel |
| Basket Finish | Matte Black |
| Magnet Material | Neodymium |
| Magnet Weight | 1.89 Oz |
THIELE & SMALL PARAMETERS
| Parameter | Value |
|---|---|
| Equivalent Volume (Vas) | 7.961 L / 0.281 ft³ |
| Excursion (Xmax, one way) | 2 mm |
| Free Air Resonance (Fs) | 140 Hz |
| Mechanical Factor (Qms) | 5.336 |
| Electrical Factor (Qes) | 1.408 |
| Total Factor (Qts) | 1.114 |
| Mechanical Mass (Mms) | 8.868 g |
| Mechanical Compliance (Cms) | 0.312 mm/N |
| BL Factor (BL) | 3 |
| Voice Coil Inductance (Le) | 0.119 mH |
| Cone Area (Sd) | 132.73 cm² |
| DC Resistance (Re) | 3.5 Ohms |
| Mechanical Mass w/o Air | 7.988 g |
MEASUREMENTS
| Specification | Value |
|---|---|
| Overall Diameter | 6.89 Inch / 175 mm |
| Overall Depth | 1.94 Inch / 49 mm |
| Front Mount Baffle Cutout | 5.65 Inch / 144 mm |
| Mounting Depth | 1.16 Inch / 29 mm |
| Motor Diameter | 4.31 Inch / 110 mm |
Product Overview
DS18’s PRO-INS6.4 was built for one thing: fitting where nothing else can. With just 1.16” mounting depth, this neodymium-powered 6.5″ midrange loudspeaker delivers pro-grade output in the tightest installs possible.
Designed to Fit
At just 1.16 inches deep, the PRO-INS6.4 is perfect for builds with zero clearance—motorcycles, side panels, custom pods, and tight-door installs. It’s the ultimate drop-in solution for adding real volume where standard mids won’t fit.
Plenty of Punch
Push 120W RMS / 240W MAX through this 4-ohm midrange speaker with confidence. The 1.5” KSV voice coil, CCAW windings, and lightweight neodymium magnet create fast, tight response with 95dB sensitivity that stays clean when cranked.
Focused Midrange
The 80Hz–6kHz frequency range makes this speaker perfect for tight, mid-focused setups. For optimal performance, pair it with a 120Hz high-pass crossover to keep it LOUD.
Built to Last
Includes a custom steel mesh grille with cloth backing to block dust and splash. The paper cone, cloth surround, and matte black steel basket are optimized for daily use without faltering in tone or response.
DS18’s PRO-INS6.4 gives you full-size sound in a low-profile package that fits anywhere. Stack them, or fill the gaps your other mids can’t reach
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