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DS18 PRO-ZT6SL
6.5” Ultra Slim 2-Way Mid-Range with Built-In Bullet Tweeter | 400W Max | 4 Ohm
The PRO-ZT6SL gives you full-size output in a super shallow 2.15” profile, built to fit tight spaces without sacrificing volume or clarity.
Shallow Build
At just 2.15” mounting depth, the PRO-ZT6SL is made for motorcycles, doors, pods, and custom panels where space is limited.
2-Way Power
A built-in bullet tweeter with neodymium magnet delivers crystal-clear highs. Combined with a 6.5” mid-range cone, the PRO-ZT6SL plays strong from 85Hz–20kHz, giving you clean vocals and sharp detail in one drop-in speaker.
Engineered for Real-World Use
The water-resistant cone and treated cloth surround are made to withstand moisture and the pressure of daily use.
Let It Rip
With 200W RMS / 400W MAX, 4-ohm impedance, and 96.5dB sensitivity, this speaker gets loud fast, even on lower power. It’s the perfect blend of output and efficiency in a frame that fits anywhere.
Get full-range clarity without giving up space using DS18’s PRO-ZT6SL.
| Nominal Diameter | 6.5" / 165.1mm |
|---|---|
| Nominal Impedance | 4 ohms |
| RMS Power Handling | 200W |
| MAX Power Handling | 400W |
| Sensitivity (1w/1m) | 95 dB |
| Frequency Response | 80Hz-20kHz |
| Recommended HI Pass Crossover | 120Hz |
| Pair or Single | Single |
| Grill Included | No |
| Voice Coil Water Protection | No |
| Water-Resistant Rating | IP32 |
| Sold as | Single Unit |
| Voice Coil Diameter | 1.5" / 38.1mm / 1" / 25.4mm |
| Voice Coil Former Material | Kapton |
| Winding Material | CCAW |
| Cone Material | Water-Resistant Paper |
| Surround Material | Treated Cloth |
| Basket Material | Steel |
| Basket Color / Finish | Glossy Black |
| Magnet Material | Ferrite / Neodymium (N35H) |
| Magnet Weight | 21 Oz / 0.44 Oz |
| Diaphragm Material | Aluminum Alloy |
| Equivalent Volume | 2.97L / 0.785ft3 |
| Excursion (one way) | 1.5mm |
| Free Air Resonance | 150Hz |
| Mechanical Factor | 7.186 |
| Electrical Factor | 0.681 |
| Total Factor | 0.622 |
| Mechanical Mass | 8.809g |
| Mechanical Compliance | 0.119mm/N |
| BL Factor | 6.521 |
| Voice Coil Inductance | 0.129mH |
| Cone Area | 132.73cm2 |
| DC Resistance | 3.2 ohms |
| Mechanical Mass w/o air | 7.081g |
| Overall Diameter (Without Grill) | 6.57" / 167mm |
| Overall Depth (Without Grill) | 3" / 78mm |
| Front Mount Baffle Cutout | 5.7" / 145mm |
| Mounting Depth | 2.15" / 55mm |
| 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.








