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Home 3ShopCar Speakers6.5 inch SpeakersRockford Fosgate Prime R165X3

Description

Rockford Fosgate Prime R165X3

The Rockford Fosgate Prime R165X3 is a 6.5″ 3-way full-range coaxial speaker pair from the Prime Series, offering a great value upgrade for factory door speakers. With a polypropylene woofer cone and rubber surround, it delivers solid mid-bass performance, while the 1/2″ silk dome tweeter and piezo super-tweeter add crisp highs and extended high-frequency sparkle. Built-in crossovers and included grilles make installation cleaner and more complete.


Features

Feature Value
Woofer Material Polypropylene cone with rubber surround
Tweeter 1/2″ silk dome + piezo super-tweeter
Power Handling 45 W RMS / 90 W Peak per speaker
Sensitivity ~91 dB @ 1W/1m
Frequency Response ~52 Hz – 20,000 Hz
Impedance 4 Ohms
Included Accessories Grilles and mounting hardware

 


Specifications

Specification Details
Speaker Size 6.5″ (165 mm)
Type 3-Way Coaxial
Impedance 4 Ohms
RMS Power Handling 45 Watts per speaker
Peak Power Handling 90 Watts per speaker
Frequency Response 52 Hz – 20,000 Hz
Sensitivity 91 dB @ 1W/1m
Mounting Depth (Top-mount) ~2.15-2.16″ (≈ 54.5 mm)
Cutout Diameter ~5.51-5.56″ (≈ 140-141 mm)
Grilles Included Yes
Warranty 1 Year

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Questions and Answers

Q1: Will these speakers work with my factory stereo without an amplifier?

Yes — with 91 dB sensitivity and 45 W RMS rating, they’ll perform reasonably well under stock head units. However, using an amplifier will unlock better volume, headroom, and cleaner sound.

Q2: What is the purpose of the piezo super-tweeter?

The piezo super-tweeter extends the high-frequency range and adds sparkle (very high treble) that the silk dome tweeter may not cover fully. It improves detail in cymbals, vocals, etc.

Q3: Do they require a lot of mounting depth? Will they fit in tight speaker doors?
They have a top-mount depth of about 2.15-2.16" (~54.5 mm), which is moderate. You’ll need to check that space is available in your door or mounting location.
Q4: Are these weather-resistant?
No, the R165X3 are not specifically weather-resistant or marine certified. They’re intended for indoor car installations.
Q5: What warranty do they come with?
They come with a 1-year manufacturer warranty.

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