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This is A Short List Of Our Most Frequently Asked Questions

Feel free to contact us via email at or by calling (305) 928-8734, or fill out the form using the link below: Contact Form Here

Our team will only contact you for the following reasons:

In order to protect you from fraudulent activity, we might contact you to request a copy of your ID – this is done when either a PO Box is supplied or the information we obtained for your address was insufficient.

If we discover that a strange combination of items has been added to your order, we will contact you personally to make sure the order is accurate before sending it out for delivery.

Sometimes items go out of stock before we get a chance to update their status on our websites and online storefronts, so if an item has sold out or been returned we will contact you to inform you of the circumstances.

DS18 will NEVER contact you to ask for your payment information!

Contact us via E-mail at, or by calling us at (305) 928-8734 to receive information of the dealers nearest your location.

We take pride in providing our customers with the highest quality audio equipment at their lowest possible prices; as a result, we are unable to change prices or packages in order to appease particular customers.

Sadly, there are currently no opportunities for full sponsorship from DS18: however, we do have a DS18 team and do provide partial sponsorships for builds we would love to be a part of. Send any pictures, projects, or details you believe will assist you in making the team to our email. Please email

We provide numerous financing options through Affirm.

For more details, click here or contact Affirm directly at or call (855) 423-3729

After shipping your order, we automatically send an email with your order’s tracking number to the email address you supplied us with for your order.

Follow this link and enter the tracking number to receive all information regarding your order’s delivery.

We take every precaution to ensure your order is packed and shipped to you correctly.

If you do happen to end up with an incorrect order, contact us immediately. We will ask for your order information, as well as photo confirmation of the items you received to determine how to correct the problem as soon as possible.

If your order is ever placed incorrectly contact us as soon as it comes to your attention. We do our best to make sure orders are placed and shipped swiftly, but we will make any necessary changes before shipping your order to you.

We have full confidence in the quality of our products and are delighted to provide a TWO-YEAR LIMITED WARRANTY on all new devices purchased from DS18’s official website.

Accidental Damage, Misuse, Inappropriate Impedance Operation, Neglect, and Faulty Installation are not covered by the guarantee. The Warranty will also be invalidated if you damage your product and have it repaired by anyone other than DS18. If your amplifier is bought from a third party DS18 seller then your warranty will be made void.

DS18 is not liable for any damages incurred to the product while it is being used. When using any DS18 product you accept full responsibility for their use. In addition to the issues listed in our Warranty Policy (linked below), DS18 is also not liable for hearing loss; damage to anyone’s property; or damage to any vehicle.

At DS18, we do the best we can to make the warranty procedure as easy as possible. Clicking the link below begins the warranty procedure for consumers who purchased their products directly from the official DS18 website.

Customers who purchased though an approved retailer’s site (such as Amazon, eBay, or Walmart) can begin the warranty procedure by providing a brief description of the problem being faced and proof of your purchase to or by following the link below

Customers who purchased their products from one of DS18’s brick and mortar dealer partners in their area are advised to the return their product to the dealer and start their warranty claim there. We support all of our dealer partners in the troubleshooting of any issues with our products. If needed, they are able to start a warranty claim on the customer’s behalf.

If an item has been turned in for warranty evaluation, DS18 requests a turnaround time of 5 to 7 business days for testing and determining warranty coverage from the moment the item arrives at our facilities.

Although we request 5 to 7 business days, products are frequently evaluated in our warehouse and a coverage determination can be reached within 2 business days of receipt at our facilities.

If one of DS18’s audio specialists find that your DS18 product must be replaced because it is faulty, DS18 maintains the right to replace any unit that has passed the original 30-day return/exchange period with a certified refurbished item.

Faulty items covered under warranty and returned within 3 days of purchase are eligible for a replacement unit or a refund.

If you received your products directly from DS18 and it is more than 3 days old, the customer is responsible for mailing the merchandise back to DS18.

If your products are still within the 30 days of being purchased directly from DS18, some restrictions may apply.

If you purchased your items from an authorized DS18 dealer, the customer is responsible for any warranty claims shipping into DS18.

Although DS18 does not specify a carrier to use when customers return their products, we do advise using a carrier that offers tracking information that details when your product will arrive: however, UPS, FedEx, and USPS are used most by customers when returning their products.

After shipping your order, we automatically send an email with your order’s tracking number to the email address you supplied us with for your order.

Follow this link and enter the tracking number to receive all information regarding your order’s delivery.

DS18 provides a return mailing label for certain products within 30 days of their purchase. Products MUST be returned to our facility WITHIN 30 DAYS of being purchased to be eligible for a refund. DS18 reserves the right to REFUSE refunds for products received AFTER 30 DAYS from the date of purchase.

For purchases made outside of DS18’s official website are subject to the individual retailer’s policies. Please contact the approved merchant you made your initial purchase from for additional information on their return policies.

We do everything possible to handle all returns as soon as the merchandise arrives at our facility: but, we ask for at least two business days to complete your return. We also ask for an additional 3 to 5 business days to allow your banking institution to restore your money once your refund has been processed.

Returning the original packaging is not necessary: however, we ask that any and all of the original packaging for your items be returned with the product.

Package your products safely and securely so that they arrive to us in good condition.

Although DS18 does not specify a carrier to use when customers return their products, we do advise using a carrier that offers tracking information that details when your product will arrive: however, UPS, FedEx, and USPS are used most by customers when returning their products.

DS18 utilize a variety of shipping services; including USPS, UPS, and FedEx due to varied pricing and transit periods. Most of our packages are shipped through FedEx, but it is not uncommon for items to be delivered from another carrier if it is the better option for fulfilling our customers needs.

DS18 provides free delivery to retail customers in the continental United States who shop directly from DS18’s official website – Customers in Hawaii and Alaska are currently ineligible for free delivery.

International shipments will be subject to shipping costs estimated at the time of purchase, as well as any additional fees or taxes applied by the carrier. Please keep in mind that these tariffs and taxes are not included in the shipping cost at the time of purchase.

Additional delivery choices may be available if you purchase from another approved retailers platform, such as Amazon or eBay. Please contact these merchants directly to inquire on the alternatives they may have for you.

DS18 reaches a majority of the United States in 3 business days. We make every attempt to send orders the same days that they are placed. Order placed on the weekend or after business hours will be sent the next business day.

DS18 does everything we can to keep products from going out of stock; but, unexpected trends in sales may lead to product shortages. When this happens, we always post an expected return date of the product on it’s detail page. Once the item is back in stock, we ship all backorders immediately.

We recommend having the gain tuned with a multimeter to ensure the correct power output and DD1 or O Scope to ensure that the amplifier is not outputting any distortion or clipping to the subwoofers. We recommend between 80-125hz LPF for most of our subwoofers and a subsonic filter set to 25-35hz while Bass EQ is set to 0dB.

Clipping is a waveform distortion that occurs when an amplifier is overdriven and attempts to deliver a current beyond its maximum capability.

In sound waves, the sides of clipped signals are vertical.That means that the signal will try to move the subwoofers cone from front to back as fast as possible. Nothing can move that fast: so, the subwoofer will either tear itself apart trying, or the flapping cone wobbles just enough to jam the coil in the magnet’s voice coil gap.

Both positive terminals connect to one positive terminal on the board within the amplifier.

Both negative terminals connect to one negative terminal on the board within the amplifier.

This design function allows for the addition of more subwoofers to a single amplifier.

Choose an amplifier that is able to output the correct RMS rating for the speakers you have.

All amplifiers have a max power output, but RMS signifies the constant power supplied to the speaker.

DS18 amplifiers are not stable below 1 ohm. Running your amplifier below 1 ohm is against manufacturer specifications and can result in the voiding of your warranty.

Yes, we look to take care of all of our customer’s repair needs. DS18 services and repairs its own amplifiers at our facility whenever possible. If outside of the warranty period, DS18 will quote you for your repair, so please feel free to reach out to us if you are in need of service.

To begin you will want to make sure that the settings on your radio are flat or at zero. You should never have to use “bass boost” or “loudness” with a properly tuned system. You can use the subwoofer level on your radio for fine tuning. You’ll want to get your system tuned to a level that is loud without distortion or popping. Take your time. Listen carefully to the sound being produced by the subwoofer(s). Once you have found your ideal level, drop your settings (gain) to half of that. For instance, if you are at half gain, drop it down to a quarter gain.

This is your “break in” setting. You will want to keep these settings for the first 24 to 36 hours of actual play time on the new subwoofer(s). We find that it is usually about a week of regular music listening in a daily driven vehicle. After those initial 24 to 36 hours; you can retune your system back up to the original setting. Your subwoofer(s) is now broken in and ready.

NOTE this is the absolute simplest explanation of only one method to break in your new DS18 subwoofer(s). There are much more involved methods that require specialized tools but, this method is a basic suggestion. Let us know if you have any other questions.

Neither voice coil is superior to the other. Simply put, the difference in the coil configuration helps determine the impedance (or resistance) an amplifier will see when the subwoofers are wired to the amplifier. You will want to consider the capabilities of your amplifier and the number of subwoofers you will be connecting per amplifier in choosing which coil configuration will work best for your set up.

Currently, DS18 does not design custom enclosures. This includes making any recommendations on 4th and 6th order bandpass enclosures. We do however have some detailed cut lists for generic enclosures that are built to spec for multiple combinations of our subwoofers. We would be happy to assist in sending these free of charge to any customer: however, we are not able to make any modifications to them.

It is important when reviewing enclosures for fit with your subwoofer(s) to consider a few basic specifications:

DS18 knows the importance of finding/building a great enclosure to unleash the power of your subwoofer, so we proudly display all our recommendations for our subwoofers and their enclosure specifications on each product’s page.

DS18 is proud to offer a variety of prefabricated enclosures for those individuals who are looking for an enclosure for their subwoofers.

Use this text to answer questions in as much detail as possible for your customers.

WARNING: Cancer and Reproductive Harm –

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