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Infinity Reference REF-9633ix Reference Series 6"x9" 3-way car speakers

Item # 108R9633IM

One thing's for sure — our customers love Infinity's Reference Series speakers.

Find what Fits your vehicle

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One thing's for sure — our customers love Infinity's Reference Series speakers.

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8 questions - 10 answers

Item # 108R9633IM

About the Infinity Reference REF-9633ix

Alexander H.

A modern classic

One thing's for sure — our customers love Infinity's Reference Series speakers. Year after year, car after car, options like these Reference Series REF-9633ix 6"x9" 3-way car speakers remain a popular choice for replacing factory speakers because of their competitive pricing and superb sound.

A modern classic

One thing's for sure — our customers love Infinity's Reference Series speakers. Year after year, car after car, options like these Reference Series REF-9633ix 6"x9" 3-way car speakers remain a popular choice for replacing factory speakers because of their competitive pricing and superb sound.

Enhanced highs

Step up to a 1" edge-driven dome tweeter for smoother highs with minimal breakup. Plus, a supertweeter gives the high frequencies a bolder presence, and push-button tweeter attenuation lets you tweak any "brightness" you might hear.

Plus One+ woofer cone

The Reference Series polypropylene woofer with its durable hi-roll rubber surround ensures you'll enjoy powerful sound every mile you drive. Its oversized cone moves more air than other speakers of similar size, adding plenty of punch to the speaker's impressive performance.

Excellent power-handling

These speakers will really blossom when powered by 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.

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Product highlights:

  • 6"x9" 3-way speakers (pair)
  • Plus One+ polypropylene woofer cone with hi-roll rubber surround
  • 1" edge-driven, textile dome tweeter; textile semi-dome supertweeter
  • 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
  • handles up to 100 watts RMS (300 watts peak power)
  • frequency response: 46-30,000 Hz
  • sensitivity: 94 dB at 2.83 volts
  • top-mount depth: 3-1/8"
  • grilles included
  • warranty: 1 year
  • MFR # REF9633IXAM

What's in the box:

  • Two 3-way speakers
  • 2 Grilles
  • 2 Grille frames
  • 2 Bottom mount rings
  • Eight 2" Screws
  • 8 Speed clips
  • 2 Adhesive backed foam gaskets
  • Instruction manual
  • Template on box

Customer reviews for Infinity Reference REF-9633ix

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4.5 out of 5 stars
215 reviews

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More details on the Infinity Reference REF-9633ix

Pat M.

Features & specs

General
Speaker Size 6X9
Design 3-way
Tweeter Design Edge-Driven Dome
Impedance (Ohms) 3
Tweeter Composition Textile
Woofer Composition Polypropylene
Woofer Surround Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 94
Frequency Response 46 - 30k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 100
Peak Power Handling (Watts) 300
Top-mount Depth (Inches) 3 1/8
Bottom-mount Depth (Inches) 3 11/16
Cutout Diameter or Length (inches) 0
Mounting Height (Inches) 0.551
Frame Width 6.412
Frame Length 9.32
The Infinity Reference REF-9633ix replaces these items:

Product Research

Features

Plus One+ Woofer Cones: Each speaker uses a cone 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 an increase in efficiency.

Angled Tweeter: The tweeters and super-tweeters are mounted at an angle (fixed), so they can be directed toward the listeners to improve imaging.

Tweeter Level Control: A switch on the front of the tweeter structure allows you to boost the tweeter output to +3dB, useful if the speakers are mounted low in a door where high frequencies are easily absorbed.

High-Output Design: The 3Ω voice coil design compensates for the high in-line resistance of small gauge factory wiring, extracting more power from factory (or aftermarket) receivers.

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Customer Q&A

8 questions already asked

Q
will these speakers fit 2019 ram crew truck?
anthony j  Nov 23, 2023
1 answer
A
They can physically fit but they are not a good match for stock power as they cause less watts to be sent out to the speakers when connected to the stock radio or stock amp. They would need aftermarket power to improve the audio. We have advisors that can be reached by calling 1-800-324-9695 who are able to recommend a solution to run them.
jason  Nov 24, 2023 (Staff)
Q
Amp?
mike  Jul 28, 2023
1 answer
A
Greetings Mike, and thank you for your question. I assume you are wanting to know what amp to run on these. Please contact an advisor at 800-324-9695 for help choosing the right amp.
hogan  Jul 28, 2023 (Staff)
Q
which are the pos and neg posts on a 9633 6x9 speaker ?
rick confused  Jan 09, 2022
2 answers
A
Should have a small pos and neg symbol on each side. But pos is the right side.
adam  Jan 12, 2022
A
The larger of the two posts is positive.
scott  Jan 11, 2022
Q
Are you absolutely sure these will fit my new 2022 chevy Colorado crew cab pick up? And will it improve the sound to my stock stereo? I owned a 2017 Colorado pick up and the system in that truck was amazing compared to this one.
rick  Oct 28, 2021
1 answer
A
For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
kenneth  Oct 30, 2021 (Staff)
Q
I bought the 9633 and 9622 for my 2020 RAM 1500. Both the speakers will fit into the front or rear doors. Would you recommend I put the 9633 in the front doors and the 9622 in the rear doors? It seems like the 9633 would sound better in the front door right?
eric  Jul 02, 2021
1 answer
A
Yes, you want the better sounding speakers in the front of the vehicle since that is where the main sound stage is coming from. The 9633 would work great in the front doors since those have a wider frequency response.
allison  Jul 14, 2021 (Staff)
Q
What amp is recommended for all 6 speakers in 2011 Challenger se I'm doin infinity reference ref 9633ix front and back and 3 1/2 infinity kappa perfect 300m in dash corner I have a Kenwood 7706s head unit?
deon  Feb 20, 2020
1 answer
A
Thanks for your question. For information on selecting the best amp I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system.
kristina  Mar 11, 2020 (Staff)
Q
I am looking to upgrade my factory speakers for my 2014 Lexus ct200h premium?
randy  May 21, 2019
2 answers
A
the sound is decent but need a high amp head unit or amplifier to get everything out of them. could use a subwoofer to go with them for loud performance
robert  May 22, 2019
A
Excellent quality for the money. They sound great just being powered by my new pioneer headunit but I bet they'd sound amazing powered by a small amp.
nicholas  May 21, 2019
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