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Close up of car door panel that has ResoNix Fiber Mat Black Edition applied to the back of it to be used as an automotive sound absorber material

Car Audio & System Design

Speakers, amplifiers, DSPs, wiring, and system planning.

General Car Audio Questions

Contact us for vehicle-specific recommendations.

For driver-specific questions, contact tech support.

Contact us for vehicle-specific recommendations.

Contact us for vehicle-specific recommendations.

Helix Product Questions

Contact us for vehicle-specific recommendations.

The best DSP depends on your vehicle, factory audio system, speaker configuration, and overall system goals. Contact the ResoNix team for a vehicle-specific recommendation before placing your order.

HELIX products purchased through ResoNix include a one-year warranty through us. Please contact us if you experience an issue with your product or need assistance with a warranty claim.

Yes. We offer educational resources for customers who would like to learn how to tune their own DSP. For those who prefer professional assistance, ResoNix also offers remote tuning services to help properly configure and optimize the system.

The correct connection method depends on your vehicle, head unit, and factory audio system. Contact the ResoNix technical support team for a vehicle-specific integration recommendation.

The correct version depends on whether your HELIX DSP uses an SCP (Smart Control Port) or a Control Input connection. Please refer to the official HELIX CONDUCTOR compatibility chart to identify the correct version for your processor.

The Control Input version can also be connected to newer devices with an SCP input using the optional SCP-to-Control Input adapter.

Functionality is the same; the Conductor Pro is a cosmetic and durability upgrade. Some older Helix DSPs will need the original Conductor with the control input cables.

The output channels on HELIX V Series and P Series DSP amplifiers cannot be bridged. However, the output channels on the HELIX AMPLIFY 206 DSP can be configured for bridged operation.

A Windows laptop, somewhere to park the car with internet, and a measurement microphone, such as our tuning kit.

Yes. A calibrated measurement microphone is required to complete the remote tuning process accurately. ResoNix offers a complete Measurement and DSP Tuning Kit with the equipment needed for your remote tuning session.

Additional Car Audio FAQs coming soon — contact us if you have any specific questions about products not yet listed here.

Your questions answered.

Every vehicle and goal set is different. Start with our sound deadening buyer’s guide to understand what each material does and where to use it. If you want a tailored plan, book our sound system design and installation consultation.


To help offset the cost, up to 40% of the consultation fee can be credited toward ResoNix product purchases made within 30 days.

Most people ask this because they are not sure what physically fits. Fitment varies by vehicle, trim, and where you plan to install it. Check available depth carefully and avoid interfering with moving parts, window tracks, airbags, and service access. As a general rule, choose the thickest that comfortably fits the space. See the product page for details.

We are building an ongoing fitment sheet from customer confirmations. If you can share what fit in your vehicle, please let us know to help others.

If an item is on backorder, the estimated restock date appears on its product page and is updated as we get new information.

Domestic orders that include a backordered item will ship in two parts: in‑stock items ship immediately, and the backordered items ship as soon as they arrive. For international orders, we currently ship when all items are in stock.

You will receive an order confirmation by email, then a tracking email once your order ships. If you need an update or anything looks off contact us with your order number.

We recommend high‑quality, proven DSPs matched to your system design and goals. If you want a custom recommendation, book our sound system design and installation consultation.

To help offset the cost, up to 40% of the consultation fee can be credited toward ResoNix product purchases made within 30 days.

Yes. Start with the sound deadening buyer’s guide for material selection and placement, and the sound deadening reference information & guide for deeper technical detail and best practices.

Please open every box and wrapper fully, since small items are sometimes packed inside larger kits for protection. If something still appears missing, reach out with your order number and what you are not seeing.
We will make it right. Contact us.

Yes, we ship worldwide. Available carrier options and rates are shown at checkout based on destination and weight. Transit times depend on the service you choose and customs processing. Express options are typically faster, while economy services take longer.

Full details are here: Returns and refunds policy.

If you need to cancel an order before it ships, contact us as soon as possible. If a return is needed, follow the instructions on that page so we can process it quickly.

Get in touch!

Need further guidance or have questions? See below for more ways to get in contact and view resources.

Contact

Email us (845) 737-6649 Chat with us

Resources

Sound deadening information guide Sound deadening buyers guide