Rockford Fosgate R165X3 Review

It’s not every day that you'll get a speaker with mounting hardware and grilles included, right? Well, you get all this plus a durable construction as well as an outstanding performance with the Rockford Fosgate R165X3.

Anyone who’s got a vehicle would be willing to have every audio component within it working perfectly, right? When it comes to getting the best, however, not everyone would be as willing to go that extra mile and do what it takes.

Getting the best speaker requires you to invest quite a lot of time and effort not to mention you'll need the part with some of your cash depending on what you like. By putting a lot of hours of research, we’ve arrived at one of the best 6.5-inch car speakers in the market- the Rockford Fosgate R165X3 review.

Comin in a build quality that’s way better than what you’ll be getting in most speakers and a performance that’s above average, the Rockford Fosgate R165X3 might just be what you’re looking for.

Today, we’ll be taking a look at both the design and build quality as well as the performance of this set of speakers. Without further ado, let’s get started and find out whether or not it’s really the best for you, shall we?

Out of the box, you’ll be getting a pair of these speakers each of which is black in color. Each of them will come along with grilles, mounting hardware to set each up in place without much of a fuss as well as a high pass crossover.

The speakers are black in color and from the looks of it, it's a 3-way speaker as it's got the mid-range, the woofer, and the tweeter all being handled by one driver. The overall build quality seems sturdy but we are yet to find out about that shortly.

Rockford Fosgate R165X3- an in-Depth Review

Being a 6.5-inch speaker, it will definitely be a perfect replacement for your stock installed speakers, right? Even so, it’s everyone’s desire to get a kick for their buck if they are going for an upgrade. Let’s have a look at the key things that make this speaker a worthy upgrade.

Product Dimensions

If you’re doing your upgrade for the first time, then you should really pay close attention to this. Being a 6.5-inch speaker, it’s neither too large nor too small and it’s probably going to be the same size as your factory installed speakers.


The nominal diameter of the midrange is 6.5 inches whereas the mounting depth of the same is 2.15 inches. The tweeters on the other hand measure only 0.5 inches in diameter.


As for the overall dimensions of the Rockford Fosgate R165X3, it’s 8.3 inches x 16 inches x 4 inches and it weighs only 4.6 lbs.

The Design and Build Quality

Whereas each of these speakers will be easy to have in place, they won’t be any good if they can’t keep up a consistent outstanding performance over a long time. In order to ensure that it gives you both quality sound and at the same time last long, the woofer, the mid-range and the tweeter are of an ideal build quality.


A silk dome pole mounted piezo tweeter and midrange

For the tweeter and the mid-range, you’ll be getting silk on either. For the production of high frequencies, it is always best to have a softer material on the tweeters and silk just so happens to be quite the thing. With silk, the production of the high frequencies will be clear and loud enough

A vacuum polypropylene cone

Whereas the tweeter and the midrange tend to take care of the higher frequencies, the woofer, on the other hand, handles the lower frequencies which is where you have the bass.

To pump out a good bass, you’ll need the cone to be both lightweight and rigid. With vacuum polypropylene for the cone, bass production will be at its best since it is reputed for being one of the best materials you could use on a cone for both the component and coaxial speakers.

Besides just pumping out an outstanding bass, polypropylene is synthetic which renders it one of the most durable cone materials there are in the market.

A rubber surround.

In order to back up the outstanding performance of the cone, this sub has a surround that’s made of rubber. As far as flexibility and durability are concerned, rubber tends to be perfect when either is taken into consideration.

The rule of thumb in the selection of the surround material is that the more flexible it is, the better the bass dissipation. In addition to being flexible, having rubber for the surround means that your speaker will last longer since rubber will not be affected by extreme temperatures or moisture.

quality speaker

Easy installation

The complexity involved in the installation process goes hand in hand with whether or not a speaker is of the perfect size.


Since the Rockford Fosgate R165X3 is a coaxial speaker with the tweeter, the midrange and the woofer being handled by the same driver, the installation will be pretty simple. As a matter of fact, it will be quite straightforward since you most probably will just have to replace the ones you have installed in your vehicle with a pair of these.

Most people would choose to do the installation in their doors which should be quite simple and you'll also have a better soundstage. You could install it in your dash but you'll have plenty more to do.


An added advantage you get with this set is that it will come with mounting hardware that includes screws and the wires to set it up. You won't have to go around looking for screws that fit or a wire gauge that is of the required size.

Power Handling

This is probably one of the most important things when it comes to picking out a speaker that will give you a good performance.


For a component speaker, I'd say that 45 watts for the RMS and 90 watts for the peak are quite outstanding. The RMS is basically the continuous power with which the speaker runs and it is recommended that you observe this range. Using anything above the recommended RMS rating to play music with your speaker may result in you getting sound distortions or even worse, damaging the voice coil completely.

Besides the power rating, there are other features that greatly determine how good a sound you’ll be getting from your speakers such as the sensitivity and the impedance rating.

91dB for the Sensitivity

The sensitivity is yet another thing you need to pay close attention to if you want a speaker that’s going to give you a sound that’sabove average.


Basically, anything that’s above 88dB is what you ought to go for. Considering this speaker comes with 91dB sensitivity, you’ll be using less power to get a loud and clear sound. Taking into account the power handling capability of this speaker, you’ll pretty much be getting the best of the highs and the lows.

Comes with an Integrated Tweeter Crossover

One of the reasons as to why most people tend to prefer component speakers to coaxial speakers is that component speakers isolate the high frequencies and the lows.


Though coaxial speakers are easy to install, not most of them will be ideal for delivering the highs and the lows. What if I told you that this subwoofer has got what it takes to deliver just the right sound quality? Well, hard as it may seem to believe, the high pass tweeter crossover will work just fine.


What the tweeter crossover does is that it directs the higher frequencies to the tweeter. Being a 6dB high pass filter, you'll have the perfect soundstage and music experience regardless of where you'll have the speakers installed.


Since you’ll be working with a 3-way coaxial speaker, the sound quality will be way better as compared to what a 2-way crossover will give you. Adding a high pass crossover to all this, the Rockford Fosgate R165X3 will be unmatched by any other coaxial speaker in its class.

Grilles and Mounting Hardware Included

Yet another thing that makes this speaker worth every penny is that it comes with grilles included in the package. Setting up a speaker without grilles to cover it up can be quite dangerous since the surround and the cone can be easily damaged.


With the grilles present, the Rockford Fosgate R165X3 is basically protected from any physical damage which could easily occur if you install it in the doors. Besides just protecting it from damage, grilles also add on to the aesthetics of the speaker hence you get a better looking and long-lasting speaker.


Besides the grilles, you'll also be getting mounting hardware. This package includes screws as well as a 16AWG speaker wire that is 30 feet long. With the two of these at your disposal, setting things up should not be much easier.


Even with the mounting hardware included, it is not always guaranteed that setting up your speaker will be easy. It’s highly recommended that you seek professional assistance if anything proves difficult to avoid going wrong, damage the speaker and at the same time, save yourself the time and trouble of installation.

super strong HARDWARE

The Frequency Response        

The frequency response is basically the range of frequencies within which the speaker can output sound effectively. Since this speaker has got both the high frequencies and the low frequencies being handled by the same driver, you need to keep on the frequency response.


Unlike component speakers, coaxial speaker systems do not handle the bass at a very low frequency. With the Rockford Fosgate R165X3having the lowest frequency as 52Hz, the low-frequency bass will be handled reasonably well and you will, without doubt, have an outstanding midbass frequency.


As for the higher frequencies, this speaker can be able to attain a maximum of 20kHz which is also the maximum possible frequency of sound that the human ear can make out.


Considering that this is a3-way component speaker and not a two-way component speaker, I’d say that the frequency response will pretty much work well with this speaker.

The Nominal impedance

Besides the power handling, the sensitivity and the build quality of the different speaker components, the nominal impedance is yet another aspect that needs to be paid close attention to.


The rule of thumb when it comes to the impedance is basically the lower it is, the better of the performance will be. Impedance and power go hand in hand in the sense that with a low impedance, your speaker will be able to utilize the amount of power that's supplied to it.


With the nominal impedance being 4 ohms on the Rockford Fosgate R165X3, it should be enough to utilize as much as the RMS as possible to give out an outstanding bass.

Final Verdict

We’ve already had a look at all there is to know about the Rockford Fosgate R165X3 and I think that we can both agree it’s one of the best coaxial speakers in the market today.

The build quality is outstanding and unmatched by most speakers in its class. At the same time, Rockford has ensured that the performance is also the best you could get for your money. As far as durability is concerned, the components are definitely built to last; with the rubber surround and a polypropylene cone, there’s no way this speaker will get damaged easily.


As for the overall design, it's an easy to install the coaxial speaker. Considering it’s got the mounting hardware coming along with it as well as a speaker grille, you can easily replace your factory speakers with it easily.

All in all, as much as it’s an outstanding speaker, just ensure you pay close attention to the measurements before spending your cash on it.

Rockford Fosgate R165X3 Review
5 (100%) 1 vote
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