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Eighteen Sound 18NLW9400 18-Inch Subwoofer
Features:
Description
The 18NLW9400 is a 18" extended low frequency loudspeaker, designed for use as a low bass or subwoofer component, in vented or bandpass configuration. The loudspeaker design provides clean and undistorted LF reproduction at a very high SPL and enables the transducer to withstand high power levels without damage. For optimum results we recommend amplifiers able to deliver 2400 Watt program power. The high grade neodymium magnet assembly is able to resist to the most demanding environmental operative conditions.
18NLW9400 features include a large displacement suspension system which, in conjunction with a fiberglass reinforced, straight ribbed cone and the Eighteen Sound proprietary Double Silicon Spider (DSS) technology, allows an ultra-linear piston action and provides full mechanical control across the entire working range. The 4 in copper round wire state-of-the-art voice coil, based on Interleaved Sandwich Voice coil (ISV) technology, provides high levels of thermal stability and durability. The ISV technology achieves a balanced linear motor unit exerting an exceptionally high force factor. This is realised through a high strength fiberglas former with half the coil wound half on the outside and half on the inside and bonded together using unique high-temperature resin adhesives.
18NLW9400 is able to perform properly under inclement weather conditions: the exclusive cone treatment improves pulp strength and gives water repellent properties to both sides of the cone. In addition, the special treatment applied to top and back plates of the magnetic structure is far more resistant to the corrosive effects of salts and oxidization.
General Specifications
| Nominal Diameter | 18 in |
| Rated Impedance | 8 Ohm |
| AES Power | 1200W |
| Program Power | 2400W |
| Peak Power | 7000W |
| Sensitivity | 98 dB |
| Frequency Range | 30 - 2500 Hz |
| Power Compression at -10dB | 0.7 dB |
| Power Compression at -3dB | 1.5 dB |
| Power Compression at Full Power | 2.2 dB |
| Max Recomm. Frequency | 500 Hz |
| Recomm. Enclosure Volume | 3.9 - 12.36 cuft |
| Minimum Impedance | 6.1 Ohm at 25°C |
| Max Peak To Peak Excursion | 2 in |
| Voice Coil Diameter | 4 in |
| Voice Coil winding material | Copper round wire |
| Suspension | Triple roll, Treated Polycotton |
| Cone | Straight ribbed, Fiberglass reinforced cellulose |
Thiele Small Parameters
| Fs | 33 Hz |
| Re | 5 Ohm |
| Sd | 189.88 sq.in. |
| Qms | 6.1 |
| Qes | 0.28 |
| Qts | 0.26 |
| Vas | 9.47 cuft |
| Mms | 0.40 lb |
| BL | 26 Tm |
| Linear Mathematical Xmax | ±0,37 in |
| Le | (1kHz) 1.90 m |
| HRef. Efficiency 1W at 1m (half space) | 97.4 dB |
Mounting information
| Overall diameter | 18.19 in |
| N. of mounting holes and bolt | 8 |
| Mounting holes diameter | 0.33 in |
| Bolt circle diameter | 17.24-17.32 in |
| Front mount baffle cutout ø | 16.38 in |
| Rear mount baffle cutout ø | 16.61 in |
| Total depth | 8.8 in |
| Flange and gasket thickness | 1.02 in |
| Net weight | 19.2 lb |
| Shipping weight | 22.92 lb |
| Packaging Dimensions | 22.92 lb |
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at sales@sweetheartdeals.com. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at sales@sweetheartdeals.com.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants), custom products (such as special orders or personalized items), and personal care goods (such as beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.
Free shipping within the continental United States
Additional charges may apply when shipping to AK, HI and Puerto Rico. Most orders ship within 1-3 business days.
Free 30-day Returns
Not satisfied with your purchase? Return within 30 days for a full refund. We pay the shipping back!
Superior Support
Have a question about your purchase or need technical assistance? Call us at 1-888-507-1180 and we will assist!
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