Five Years Limited Warranty

Five (5) year limited warranty:

Earthquake warrants the original purchaser that all Factory Sealed New Audio Products be free from defects in material and workmanship under normal and proper use for a period of five (5) years from the date of purchase (as shown on the original bill of sale with serial number affixed/written on it). The five (5) year warranty period is valid only if an authorized Earthquake dealer properly installs the product and the warranty registration card is properly filled out and sent to Earthquake Sound Corporation. If a non-authorized party installs the product a ninety (90) day warranty period will be applied.

(A) Five (5) years limited warranty plan coverage guidelines:

•First year: Earthquake pays for labor, parts, and return ground freight (only in US mainland, not including Alaska, Hawaii and Puerto Rico).

•Second year: Earthquake pays for labor and parts only, customer must pay freight both ways.

•Third, fourth & fifth year: Earthquake pays for labor only. Customer must pay for parts and freight both ways.

(B) Warning:

Products (sent for repair) that are tested by Earthquake technicians and deemed to have no problem(s) will not be covered by the five (5) year limited warranty. Customer will be charged a minimum of one (1) hour of labor (ongoing rates) plus shipping charges back to customer.

(C)Earthquake will repair or replace - at our option - all defective products/parts subject to the following provisions:

•Defective products/parts have not been altered or repaired by other than an Earthquake factory approved technician.

•Products/parts are not subjected to negligence, misuse, improper use, or accident, damaged by improper line voltage, used with incompatible products, or have its serial number or any part of it altered, defaced or removed, or have been used in any way that is contrary to Earthquake's written instructions.

(D) Warranty Limitations:

Warranty does not cover products that have been modified or abused. Including but not limited to the following:

•Damages to speaker cabinet and cabinet finish due to misuse, abuse, or use of improper use of cleaning materials/methods.

•Bent speaker frame, broken speaker connectors, holes in speaker cone, surround & dust cap, burnt speaker voice coil.

•Fading, deterioration of speaker components & finish due to improper exposure to elements.

•Bent amplifier casing, damaged finish on the casing due to abuse, misuse, or improper use of cleaning material.

•Burnt traces on PCB.

•Product/part damaged due to poor packaging or abusive shipping conditions.

•Subsequent damage to other products.

A warranty claim will not be valid if the warranty registration card is not properly filled out & returned to Earthquake with a copy of the sales invoice.

(E) Service Request:

To receive product/s service, contact Earthquake's service department at (510) 732-1000 and request an RMA number (Return Material Authorization); items shipped without a valid RMA number will be refused. Make sure you provide us with your complete/correct shipping address, a valid phone number, and a brief description of the problem you are experiencing with the product. In most cases, our technicians might be able to resolve the problem over the phone, thus eliminating the need to ship the product.

(F) Shipping Instructions:

Product/s must be packaged in its original protective box(s) to minimize transport damage. Shipping claims regarding items damaged in transit must be presented to carrier. Earthquake Sound Corporation reserves the right to refuse any products improperly packed. Original bill of sale must accompany product returned for service. We encourage you to include with the package a written description of the problem. Ship product to: Earthquake Sound Corp. 2727 Mc Cone Avenue, Hayward, CA 94545. Ph (510) 732-1000. You are responsible for the cost of shipping the product to Earthquake Sound Corporation.

(G) Disputes Resolution:

All disputes - between clients and Earthquake Sound Corporation - resulting from the five (5) years limited warranty policy must be resolved according to the laws & regulations of the county of Alameda -California.

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Earthquake Sound PN-4521 user manual Five Years Limited Warranty, Five 5 year limited warranty
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PN-4521 specifications

The Earthquake Sound PN-4521 is a powerful subwoofer that stands out in the audio industry thanks to its advanced technologies and impressive features. Tailored for home theater enthusiasts and audiophiles alike, this subwoofer delivers exhilarating low-frequency performance, creating an immersive sound experience.

One of the notable features of the PN-4521 is its robust 15-inch woofer. This larger driver size allows for deeper bass response compared to standard subwoofers. When combined with the subwoofer’s high power handling capabilities, the PN-4521 can produce rumbling lows that not only enhance music listening but also elevate the experience of watching movies, making explosions and rumbles come to life.

The PN-4521 employs Earthquake Sound's unique patented technologies, including the Direct Port Technology. This innovation ensures that the subwoofer can efficiently convert power into sound without any distortion. By engineering the cabinet with precision, the design minimizes turbulence, resulting in clear and articulate bass that tightens the overall sound.

Another significant characteristic of the PN-4521 is its adjustable crossover settings, allowing users to tweak the output to their preference. With a wide frequency response range, the subwoofer can seamlessly integrate with various speaker setups, making it a versatile choice for different audio systems. Whether you want to feel the low end in music or need the bass to support your home theater system, the PN-4521 adapts accordingly.

The subwoofer is built with durability in mind. Its sturdy enclosure not only contributes to the quality of sound by reducing unwanted resonances, but also ensures longevity. The attractive finish and thoughtful design allow for easy integration into any room, complementing both aesthetic and acoustic needs.

In terms of connectivity, the PN-4521 offers multiple input options, including speaker level and line-level inputs, making it compatible with a wide range of audio equipment. The user-friendly layout ensures that installation is straightforward, empowering users to make the most out of their audio experience.

Overall, the Earthquake Sound PN-4521 is an excellent choice for those seeking a powerful, reliable, and versatile subwoofer. With its combination of advanced technology, quality construction, and user-friendly features, it promises to deliver an extraordinary sound that will satisfy even the most demanding audiophile.
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