

Description
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Overview
The 18 SOUND 21NLW9601-4 is a refined 21-inch neodymium subwoofer, marking a noteworthy evolution from the 21NLW9600 speaker. This high-performance transducer is crafted for high loading, making it ideal for ultra-low frequency horn-loaded and bandpass subwoofer designs. With a recommended amplifier delivering 3600 Watts of program power without clipping, optimal performance is ensured even in demanding scenarios.
At its core is the Triple Silicon Spider (TSS) technology which grants exceptional control over the moving mass, promising excellent linearity and long-term mechanical stability. This feature ensures improved cone control even at high levels of Sound Pressure Level (SPL) matching, positioning the 21NLW9601 as a low distortion, highly dynamic transducer.
Key Features & Specifications
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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!
Secure Payments
All transactions are certified Level 1 PCI DSS compliant, which means peace of mind at checkout!