Why replace your car's original speakers?

The speakers that originally came in your car were made from inexpensive materials, designed to create acceptable sound at the lowest possible cost to the manufacturer. If you love music, you deserve better. Name-brand aftermarket speakers deliver fuller, richer sound with considerably more detail and nuance, and they're capable of playing louder and cleaner than factory speakers. Connect new speakers to your factory radio and you'll get the best possible sound from your dealer-equipped system. Pair them up with a new car stereo for a level of enjoyment that can rival a high-fidelity home audio experience.

Our take on the Infinity Reference X REF-9603ix

by John Pollard

Designed for more clarity
Do you want to hear the details you've been missing in your car's sound system? You'll enjoy exceptional clarity from Infinity's Reference X Series REF-9603ix 6"x9" speakers. Infinity uses textile tweeters and PEI super tweeters to give you amazing levels of detail without sounding harsh, and a level control switch allows you to boost the brightness to your taste.

Larger woofer for more bass
The REF-9603ix appeals to bassheads too, with tough polypropylene woofers and durable hi-roll rubber surrounds that deliver strong low-frequency performance. Each Plus One+ woofer sports a significantly larger cone than speakers of similar size, adding plenty of punch to the speaker's smooth and accurate highs.

Great for any power supply
You can power these speakers with up to 100 watts of RMS power — they'll work great with an external amplifier, but they're also sensitive enough to be a good match for a factory or aftermarket stereo. Plus, Infinity comes up with a safe way to get a little more power out of your system — these 3-ohm speakers combine with the speaker wire in your car so your car stereo sees actual 4-ohm impedance. Grilles are included along with Infinity logo badges that can be attached to your factory grilles.

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Highlights:

6"x9" 3-way speakers (pair)
Plus One+ polypropylene woofer cone with hi-roll rubber surround
edge-driven textile dome tweeter PEI and super tweeter
True Four Ohm Impedance technology: speaker's 3-ohm impedance combines with speaker wire impedance for a 4-ohm load
compatible with virtually all factory or aftermarket car stereos
power range: 5-100 watts RMS (300 watts peak power)
frequency response: 46-21,000 Hz
sensitivity: 94 dB
top-mount depth: 3-1/16"
warranty: 1 year
Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and specs chart | What’s in the box? | In-depth notes

Features and Specs

General
Design Loading...	3-way
Tweeter Design Loading...	Edge-Driven Dome
Tweeter Composition Loading...	Textile
Woofer Composition Loading...	Polypropylene
Woofer Surround Loading...	Rubber
Parts Warranty Loading...	1 Year
Labor Warranty Loading...	1 Year
Specifications
Sensitivity Loading...	94 dB at 2.83 volts
Frequency Response Loading...	46 - 21k Hz
RMS Power Range (Watts) Loading...	5-100
Peak Power Handling (Watts) Loading...	300
Impedance (Ohms) Loading...	3
Top-mount Depth (Inches) Loading...	3 1/16
Bottom-mount Depth (Inches) Loading...	3 5/8

Product Research

What's in the box?

Download owner's manual

Two 3-way speakers
2 Grilles
2 Grille frames
2 Bottom mount rings
Eight 2" Self-tapping screws
8 Speed clips
2 Adhesive backed foam gaskets
2 Infinity logos
Template on box
Owner's manual (English/ Danish/ German/ Spanish/ Finnish/ French/ Italian/ Dutch/ Polish/ Portuguese/ Russian/ Swedish/ Turkish/ Chinese)

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features

Plus One+ Woofer Cones: Each speaker uses a cone significantly larger than other speakers of the same size. This is accomplished by using a unique basket design and hi-roll surround. The Plus One+ design offers greater bass output and increased efficiency.

Hi-roll Rubber Surrounds: The hi-roll rubber surrounds allow the woofers a greater range of movement, resulting in longer X-max and more bass output.

Tweeters: Each speaker uses an edge-driven textile dome tweeter and a super-tweeter for smooth, accurate highs. A switch on the front of the tweeter housing allows you to boost the tweeter output 3dB, useful if the speakers are mounted in a location where high frequencies are easily absorbed.

True Four Ohm Impedance Technology: The speaker's 3-ohm impedance combined with the impedance of your speaker wire provides a true 4-ohm load to your connected head unit or amplifier.

Power Handling: Although Infinity rates the 9603ix speakers at 100 watts RMS (continuous average), they also recommend amplifiers with a power rating from 5 to 200 watts RMS.

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Reviews for the Infinity Reference X REF-9603ix

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5 out of 5

Infinity Reference X Ref-9603ix

Written By Awesome, Chesapeake Va on Friday, June 14, 2013

Installed in a 1998 Chevrolet Cavalier

Crutchfield Customer Review (What's this?)

I installed these in a 1998 Chevy Cavalier with an Alpine Head unit. These are the best sspeakers I have ever owned. They are clean and crisp and have plenty of bass. I love them..Just bought another pair for my blazer. Can't wait to put them in. Don't wait, these are great speakers.

Pros:

arrived quick, easy to install, sound great at all levels.

Cons:

NONE

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5 out of 5

Great Speakers

Written By Charles S, Richlands,NC on Friday, March 29, 2013

Crutchfield Customer Review (What's this?)

Just what I was looking for. Really did the trick in my 95 Toyota Tacoma.

Pros:

Great sound

Cons:

none

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5 out of 5

Excellent speakers

Written By Arun. S, India on Monday, December 10, 2012

Excellent sound quality good bass, voice is clear and clarity(sharpness) is good. I have installed it for Pioneer 2013 model avh-x2590bt. Value more than money.

Pros:

bass is good, voice is so clear, and treble too(extra tweeters dont require).

Cons:

nothing.

3 out of 3 people found this helpful

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5 out of 5

UNMATCHED QUALITY

Written By Eddie P, Pittsburgh, PA on Wednesday, November 21, 2012

Crutchfield Customer Review (What's this?)

I ordered the Infinity Reference 9603ix three way speakers for my 2003 Mitsubishi Eclipse, and they blew my mind. I previously had the Infinity factory speakers located in the rear panel of my car, which began to deteriorate, as they were made out of treated paper. Although they still seemed to match up to most car systems, the tweeters were not doing their job, often making shrill and distorted noises that I could notice as I drove, and the woofers were kind of beat up after ten years of use. So I decided to invest in the same brand, and I am so GLAD I did. These speakers are made EXTREMELY well. The tweeter on these things is one of the clearest i have ever heard on any 2 or 3 way speaker, despite the fact that the high-quality rubber can produce large quantities of bass. If you want to hear all of your highs, I suggest buying these, as the super tweeter also adds significant difference to what you can hear, adding approximately 4 dBs of high frequency to your music. The bass fills my car's small cabin with immensely low tones, and SHAKES EVERYTHING. I LOVE IT! There is no doubt in my mind that these speakers are easily one of the highest quality, yet reasonably priced 6X9 speakers you will find. If you like bass more so than highs, buy the two ways. But if you want bass, but hate to sacrifice crystal clear highs, BUY THESE. They have everything someone could want, AND MORE! Thank you Infinity and Crutchfield, once again with outstanding service.

Pros:

Easy Installation Tweeters are unmatched Bass is very full, due to rubber Very high quality, well manufactured Priced well for what you get NO DISTORTION.

Cons:

ABSOLUTELY NONE.

13 out of 14 people found this helpful

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