MB Quart F.A.Q.


How do I get my product serviced?

We suggest that you contact the company where you purchased your Maxxsonics product to take care of your warranty claim and/or to help you arrange for service on products that are outside of the warranty period.


What if I am unable to contact the Dealer where I originally purchased my product?

If you are not able to contact an authorized dealer, call our Customer Service department at 847-540-7700 or Contact Warranty Support. We’ll need a copy of your receipt showing the place and date of purchase. Once approved, you will receive a Return Authorization number and shipping details and instructions.


Who is responsible for the shipping charges if I need to send in a product for service?

Once you receive a Return Authorization number, you will be responsible for the shipping/insurance charges for your shipment sent in for service. Maxxsonics will pay the shipping charges on the product shipment that is sent back to you.


How do I know if my product is under warranty?

The date of purchase indicated on your receipt is the date in which your warranty starts. Most Maxxsonics products, with the exception of a few MB Quart products, are covered by a One-Year Limited Warranty with repair and/or replacement at the discretion of Maxxsonics. Remember, you must be able to provide a copy of a receipt that contains the name and address of the authorized Maxxsonics reseller for your warranty to be valid and the warranty is limited to manufacturing defects only.


What defines a Maxxsonics Authorized Dealer?

Authorized Dealers purchase product directly from/through Maxxsonics.


Why would my warranty not be valid?

1) Product was not purchased from an authorized Maxxsonics Dealer.

2) Product was damaged as a result of misuse, abuse, accident, incorrect wiring, improper installation, alteration of date code or bar code labels, revolution, natural disaster, any sneaky stuff because someone messed up, a repair or alteration outside of our factory or authorized service centers occurred or anything else that should not have done to the product.

3) Do not have a valid purchase receipt.

4) You are not the original consumer purchaser.


What if I can’t find my valid purchase receipt?

We suggest that you contact the company where you purchased your product and request a copy of your original receipt. Your product cannot be warranted without a valid purchase receipt.


What does the warranty cover?

Maxxsonics USA warrants to the original consumer purchaser your product to be free from defects in material and workmanship for one (1) year from date of purchase. Refer to your product manual for complete details.


What if I bought the product 3 years ago, but didn’t install it until recently and when it was installed, I couldn’t get it to work?

Your warranty starts the day the product was purchased – not the date installed. Depending on the warranty period (most Maxxsonics products are one year), your product would be warranted for example one year, starting from the date of purchase, which is the date that appears on your receipt.


I know that my amplifier is out of warranty. Do you know a place where I can get it repaired?

Maxxsonics has a list of independent authorized repair services within the Continental US that we can provide. Please contact our Customer Service Department at 847-540-7700 or email us at Contact Customer Support to help you locate a repair shop.


What is the on line Product Registration?

Registration Center registers your product and can provide you with product updates and notices. On-line product registration does not constitute warranty. You must be able to provide your original sales receipt for all warranty claims. Please retain your sales receipt.




Can I purchase products directly from Maxxsonics?

Maxxsonics sells only to Authorized Consumer Electronic Equipment Distributors and Dealers. To find a Dealer in your area, please contact our Customer Service Representatives at 847-540-7700 or Contact Customer Support.


I can’t find my product manual. Where can I get another one?

Most product manuals, current and archived copies, can be downloaded (pdf format) on each of the corresponding Maxxsonics websites. Refer to the Manual and document archive located under the Support tab.



Maxxsonics brand t-shirts are available for purchase on-line at Maxxsonics T-shirts




Is there anything I need to know about before dropping in my new audio equipment?

Back to Basics, is a must read guide written by SPL world record holder and Maxxsonics Product Development Specialist, Mike Stiers that helps answer questions about a vehicle’s current factory system and focuses on the areas that need to be reviewed before installing new equipment. As Mike explains, “As you increase demand, you need to look at upgrading your battery, alternator and most importantly your “Big 3.”


My amp keeps going into protect mode.

Do you have any information to help me wire my speakers and / or subwoofers? First check your amplifiers product manual for the impedance at which it was measured and the product manual provided with your speaker and /or sub. The most common wiring configurations can be viewed at:

DVC 4-Ohm Subwoofer and Speaker Wiring

SVC 4-Ohm Subwoofer and Speaker Wiring

DVC 2-Ohm Subwoofer and Speaker Wiring


Do you have a list of what all these terms like “Vas” mean?
Do you have an installation manual to help me install my amplifier?
How can I be sure that I am getting the best performance out of my amplifier?
What could be causing the problem I am having with my sound system?
Where can I get additional information on car audio?

Team Maxxsonics is one of the most organized and well-assembled teams in car stereo and audio competition. Visit Team Maxxsonics Forum to post questions and share information with some of the most knowledgeable people in the car audio industry today.




I need to locate a Dealer in my area. Where can I find this information?

Because our Dealer list changes regularly, the best way for us to provide you with the most up to date information is at Contact Dealer Locator or call 847-540-7700 for a prompt response.


Do you have any Authorized Dealers that sell MB Quart, Hifonics, Autotek or Crunch product on the Internet?

Internet shopping is a buyers’ beware market. To ensure that your purchase is from a Maxxsonics Authorized Dealer, please contact our Customer Service Department at 847-540-7700 or Contact Customer Support prior to purchase.




How do I get photos of your products for my catalog/website/in store promotion/literature?

You can either click then copy the photos that appear on our websites or for higher quality images, please email us your request at Contact Customer Support.


Do you have merchandising banners available for in-store use?

Yes. Please contact your distributor for more information.


I am having trouble getting your products from my distributor?

Call our Customer Service Department at 847-540-7700 or email Contact Customer Support.