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Rockford Fosgate R1675X2 (OPEN BOX COMPLETE)

6-3/4" 2-Way PRIME Series Coaxial Car Speakers

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Rockford Fosgate R1675X2 (OPEN BOX COMPLETE)

6-3/4" 2-Way PRIME Series Coaxial Car Speakers


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This is an Open Box Item

We have checked, tested, and confirmed this item to function properly. It contains all the same parts as a new unit, but shows some visible signs of use.
This open box product has a 30-day return policy and a 90-day warranty

A PRIME Way to Listen

If you’re looking for sound quality at a fantastic value, the Rockford Fosgate PRIME series speakers are your calling card. Available in multiple sizes, the PRIME speakers are the perfect factory door speaker replacement if you’re not looking to spend a ton of money. They are designed with a polypropylene cone in order to provide a punchy sound with quick transitions from note to note. Rubber speaker surround assist with the linear movement of the cone while simultaneously allowing for a great excursion than many other speakers. The PRIME series speakers are designed with a shallow mounting depth and a wide frequency response for an easy fitment with maximum performance in almost any vehicle on the market. If you’re looking for the next big upgrade for your vehicles audio system, check out the PRIME speakers by Rockford Fosgate!

Item Condition: Open Box Incomplete

  • Item has been installed, used,and box damaged
    • 6-3/4" 2-Way PRIME Series Coaxial Speakers
    • Power Handling:
      • Peak: 180 watts per pair / 90 watts each
      • RMS: 90 watts per pair / 45 watts each
    • Polypropylene mid-woofer cone material
    • Rubber speaker surround
    • CEA-2031 compliant speakers
    • 1/2" Silk balanced dome tweeter
    • Stamped steel basket
    • 4 ohms impedance
    • Integrated crossover system for tweeter protection
    • Protective grilles and mounting hardware are included
    • Klippel verification optimized components for best possible performance
    • Frequency Response: 52-20,000 Hz
    • Top-mount Depth: 2-3/16"
    • Sensitivity: 91dB
    • 1-year Sonic Electronix Warranty

    Priced Per Pair

    Speaker Specifications

    This is the manufacturer product line of speakers.
    Prime (Rockford Fosgate)
    Priced Per
    Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
    Speaker Size
    Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
    6-3/4" (Oversized 6-1/2")
    The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
    Tweeter Design
    Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
    Tweeter Size
    Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
    Tweeter Composition
    Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

    PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

    Woofer Composition
    Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
    Woofer Surround
    A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
    Peak Power Handling
    Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
    90 watts
    RMS Power Handling
    The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
    45 watts
    An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
    Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
    91 dB
    Frequency Response
    The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
    52 - 20000 Hz
    Impedance (Per Voice Coil)
    The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
    4 ohms
    Shallow Mount Installation
    This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

    Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

    Top-Mount Depth
    The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
    Bottom-Mount Depth
    The depth when installed from the bottom of the mounting surface. Measured from the bottom of the speaker's magnet to the top of the mounting holes on the rim of the speaker.
    Cutout Dimensions
    Refers to the dimensions of the hole, measured in inches or millimeters, required to contain the speaker.
    5-5/8" x 5-5/8" 
    Hi-Res Audio Compatible
    This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.
    Speaker Grilles
    A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
    Number of Speakers
    This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

    Please refer to the product image and description for further details about the speaker.

    Warranty and Return Policy

    Parts Warranty Duration
    90 days
    Labor Warranty Duration
    90 days
    Warranty Provider
    Sonic Electronix

    Summary of Customer Ratings & Reviews

    Rating Distribution

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    Average Attribution Rating

    Accessory Tools and Products

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    Streetwires 50 ft. of True Spec 16 Gauge Speaker Wire

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    Your Price $24.99

    Belva 23 ft. of True Spec 16 Gauge Speaker Wire

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    Your Price $20.99

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    NVX SDSK2 Speaker Kit

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    Stinger Roadkill Speaker Kit

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    Browse 6 questions and 62 answers
    Hide answersShow all answers | Sort by
    Why did you choose this?
    Sonic Electronix Store
    Name, and performance as factory replacement is excellent.
    Tad C on Mar 22, 2017
    My buddy has it
    Brandon C on Mar 5, 2017
    needed to replace the stock speakers in my suburban and these are a reputable brand company with a very good product at a very good price
    Robert F on Mar 7, 2017
    should be a good fit for my 2004 Chevy Truck
    Jeff H on Mar 3, 2017
    Will these speakers fit inside the existing hole and hole pattern in the door panels?
    A shopper on Nov 10, 2014
    Best Answer: Hello,

    You did not provide any vehicle information, so it will be impossible to establish that. However, you can check with the two fit guides below, to see if your vehicle calls for any special adapters/brackets. Also, like all things car audio, a bit of homework on similar installs will go a LONG way.
    Reply · Report · Customer SStaff on Nov 11, 2014
    · Add Answer · I Have This Question Too (3)
    My current speakers for my car are busted. I want to buy these to replace my current speakers. Do these speakers come with wires in the box?
    Taylor b on Sep 19, 2014
    Best Answer: Hello Taylor,

    Yes, they do come with a patch cable w/ Quick Connects. Of which may not be used at all, it depends on the length of wiring available. Nevertheless, what you see pictured is what you will receive.
    Reply · Report · Customer SStaff on Sep 20, 2014
    · Add Answer · I Have This Question Too (0)
    im replacing my speaker in my nissan sentra they have great reviews but how about the bass quality?
    A shopper on Sep 2, 2015
    Best Answer: There okay, All depends. they dont give off alot of deep bass which i like. then again, i like my music extra loud. but when i had them put it in, I found out that there actually the cheap Rockfords pretty much. if you just want a lil bass for when inside your car, theyll work. if you like it loud like myself, i wouldnt buy.
    Reply · Report · Marcus W on Sep 2, 2015
    · Add Answer · I Have This Question Too (0)
    is a wire harness included with the speakers?
    mark w on Nov 6, 2015
    Best Answer: Speaker wires with the proper terminals were included. They were pretty long and worked great for my install.
    Reply · Report · Michael C on Nov 6, 2015
    · Add Answer · I Have This Question Too (0)
    would I have to use any type of booster if I hook up after market speakers to a stock radio?
    A shopper on Aug 23, 2014
    Best Answer: Hello,

    Absolutely not; especially for Prime Series Rockford Fosgate speakers. Ideally, you want to eventually add an amplifier to get the full experience of the speakers. This is because OEM Headunit rarely give you anything beyond ~10w-15w RMS to each location [assuming non amplified]. Nevertheless, no 'booster' needed if you don't want it.
    Reply · Report · Customer SStaff on Aug 23, 2014
    · Add Answer · I Have This Question Too (0)

    Product Summary


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    Sonic Electronix Wiring Guide

    Wiring Diagram Legend

    Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

    Product Name: Rockford Fosgate R1675X2 (OPEN BOX COMPLETE)