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Infinity Kappa Perfect 300m Kappa Perfect Series 3-1/2" midrange speakers

Item # 108PERF300

Turn your Infinity Kappa Perfect 2-way component system into a 3-way system with the addition of these Kappa...

Find what Fits your vehicle

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Turn your Infinity Kappa Perfect 2-way component system into a 3-way system with the addition of these Kappa...

Item # 108PERF300

Shop all Infinity Midrange Speakers

About the Infinity Kappa Perfect 300m

Alexander H.

The Perfect companion

Turn your Infinity Kappa Perfect 2-way component system into a 3-way system with the addition of these Kappa Perfect 300m 3-1/2" midrange speakers. Infinity uses a carbon fibre cone that weighs less than traditional materials, so you don't need a ton of power to drive this speaker, but the oversized voice coil certainly allows for awesome power-handling if you're driving this system with an amp. Infinity's Plus One+ woofer technology extends the cone right up to the edge of the basket, giving you more surface area than with most comparable speakers. A bigger cone allows this speaker to cover effectively down to 150 Hz. 

The Perfect companion

Turn your Infinity Kappa Perfect 2-way component system into a 3-way system with the addition of these Kappa Perfect 300m 3-1/2" midrange speakers. Infinity uses a carbon fibre cone that weighs less than traditional materials, so you don't need a ton of power to drive this speaker, but the oversized voice coil certainly allows for awesome power-handling if you're driving this system with an amp. Infinity's Plus One+ woofer technology extends the cone right up to the edge of the basket, giving you more surface area than with most comparable speakers. A bigger cone allows this speaker to cover effectively down to 150 Hz. 

Uber-Infinity

Infinity's flagship Kappa Perfect Series speakers look so good and feel so solidly built that it's a shame you probably won't lay your eyes on them again after they're installed, but it's a small price to pay to experience unrivaled audio in your vehicle. This speaker is a heart-and-soul Infinity creation, utilizing the very best technology and materials available to their engineers.

Grilles are not included; the factory grilles should be suitable for most applications.

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Product highlights:

  • 3-1/2" Plus One+ carbon fiber midrange speakers
  • no crossovers included
  • 3.5-ohm impedance
  • handles up to 75 watts RMS (300 watts peak power)
  • frequency response: 150-10,000 Hz
  • sensitivity: 88 dB at 2.83 volts
  • woofer top-mount depth: 1-3/4"
  • grilles not included
  • warranty: 3 years
  • MFR # Perfect 300m

What's in the box:

  • 2 Midrange speakers
  • Eight 1" Screws
  • 8 Speed clips
  • 2 Adhesive backed foam gaskets
  • Installation instructions

Customer reviews for Infinity Kappa Perfect 300m

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4.5 out of 5 stars
78 reviews

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More details on the Infinity Kappa Perfect 300m

Pat M.

Features & specs

General
Speaker Size 3 1/2
Design 1-way
Tweeter Design ---
Impedance (Ohms) 3.5
Tweeter Composition ---
Woofer Composition ---
Woofer Surround Rubber
Parts Warranty 3 Years
Labor Warranty 3 Years
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 88
Frequency Response 150 - 10k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 75
Peak Power Handling (Watts) 300
Top-mount Depth (Inches) 1 3/4
Bottom-mount Depth (Inches) 1 7/8
Cutout Diameter or Length (inches) 3 1/8
Mounting Height (Inches) 0.239
Frame Width 3.782
Frame Length 3.782

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Features

Midrange: These drivers are midrange, designed for use with the Kappa Perfect 500, 600, or 900 2-way component sets (all sold separately). The crossovers included with the component sets can be set to 3-way for use with these Kappa Perfect 300M midrange.

Note: These midrange speakers should not be used without a crossover.

Mounting: Unlike typical 3½" speakers, the 300M has four mounting tabs. (Most 3½s have two.) When mounting in many factory speaker locations, two of the tabs will need to be removed. The tabs are not scored for easy removal, so specialized tools may be necessary (rotary tool, saw, etc.).

Plus One Cones: The Plus One midrange cones offer more surface area than other speakers that fit in the same size opening. This is accomplished by using a new basket design and hi-roll surround. The result is greater bass output and a significant increase in efficiency.

Terminals: The wire terminals are set screws that will accept up to 14 gauge bare wire.

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Customer Q&A

15 questions already asked

Q
Do they work with the Kappa 603CF in three way configuration?
victor daniel  Apr 25, 2023
1 answer
A
Greetings Victor, and thank you for your question. No sir. These are for the older Kappa Perfect 2 way components. For the 603CF, you would be needing the 303S midrange. The 303S comes with a midrange crossover, the 300's do not. This is what you need. https://www.crutchfield.com/p_108K303S/Infinity-Kappa-303S.html
hogan  Apr 25, 2023 (Staff)
Q
What high and low frequencies (bandpass) should be used with this speaker? It's in the front dash and I have a set 693Cs in the front doors.
chastine  Sep 05, 2022
1 answer
A
Greetings Chastine, and thank you for your question. The Kappa Perfect 300M are to be used with older Kappa component sets, like the Perfect 900. The crossover point was handled by the older Kappa Perfect crossover. The new midrange is the 303S. That comes with the midrange crossovers needed for the 693C crossovers, then switch to 3 way.
hogan  Sep 06, 2022 (Staff)
Q
Can I use these kappa perfect 300 / 3.5 inches straight to the amp without a cross over ???
rick  Feb 14, 2022
1 answer
A
Yes you can, but you need to make sure that you still set the high pass filter properly. If you have a DSP in your system you can safely dial your speakers in.
robert  Feb 14, 2022
Q
Is the listed RMS output for 1 speaker or the pair?
david  Feb 01, 2021
1 answer
A
The RMS and other specifications are for each speaker. Each one can handle up to 75 watts RMS
jason  Feb 18, 2021 (Staff)
Q
If I am running jl c5 components in door with 900/5 amp, can I just connect these to the crossover if its a 3-way xover?
ty  Jan 27, 2021
1 answer
A
The ones I got, I put them in the dash, of my Ram 2019, they have awesome sound.
randal martin  Jan 28, 2021
Q
How do you add this to the 60csx set to get a 3 way crossover system?
grant  Jun 05, 2020
1 answer
A
There are an extra set of inputs and outputs on the crossover for adding the mid-range speakers.
casey  Jun 24, 2020 (Staff)
Q
mazda cx-5 2016 bose system- will these Kappa speakers fit in my front dash on the sides?
john  Apr 07, 2020
1 answer
A
You can check to see if this will fit your vehicle by using our Outfit My Car tool: http://www.crutchfield.com/car/carselector.aspx 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.
kristina  Apr 21, 2020 (Staff)
Q
Would these be plug and play for my 2012 buick lacrosse with the harmon-kardon sound system?
chris  Sep 29, 2019
1 answer
A
if you have the same size speaker, then yes wire it & play it...great sound from these mid-range speakers!
robert  Sep 29, 2019
Q
what the depth is for this speakers?
ioan  Apr 14, 2018
2 answers
A
I purchased this for my grandson...He put them in his pickup truck and they have been there ever since, so I imagine that he is satisfied with the speakers. And, he is very particular about anything...hope this somewhat answers the question....
catherine  Apr 14, 2018
A
1 7/8 inch
kyle  Apr 14, 2018
Q
Would this speaker improve mid range over OEM Infinity system in a 2007 Dodge Ram Megacab?
eddie  Feb 12, 2018
4 answers
A
While I, of course, do not have your specific car, I am confident to answer yes they would. They are solid and very capable speakers with great clarity. They've been the best part of my six-speaker upgrade thus far. Stock systems, despite being Infinity, Bose or JBL, always seem to have their limitations. Hope this helps.
jim  Feb 13, 2018
A
they scream with the right amplifier
paul  Feb 12, 2018
A
Not sure about vehicle fitment but i installed these in the dash openings of my 13 ram 1500 & it was the biggest improvement compared to replacing all the door speakers, these are the ones that really made the system come to life!
michael  Feb 12, 2018
A
This is not a bad speaker, but in my opinion not worth the price. Yes, it will be better than stock, but unless your ram has a very poor stereo system, then the difference wont be huge. If yours is already OK, to Pretty good, these won't help $150 bucks worth.
james  Feb 12, 2018
Q
Infinity Kappa Perfect 300m , do they come with a speaker cover for top mounting ?
hemi ceaz  Feb 01, 2018
3 answers
A
No they do not.
conor  Feb 05, 2018
A
Unfortunately they do not
kyle  Feb 02, 2018
A
Nothing else comes with these speakers but screws, instructions and some decals.
eliasar  Feb 02, 2018
Q
can i purchase only one since this is for a center speaker on my tundra?
ben  Dec 21, 2017
2 answers
A
I dont think you can purchase just one. They come in a pair in the box. I only needed one as well for my F150 Harley Davidson. Now i have an extra if it goes bad.
eliasar  Jan 12, 2018
A
Sorry, no. They are only packaged in pairs.
ryan  Dec 27, 2017 (Staff)
Q
I have a 2015 Jeep Cherokee and looking first to replace the two 3 1/2" dash speakers. Stock speakers are rated at 8 ohms, but after-market are typically 4. My questions: 1) for speakers rated for 80 Hz, would bass blockers be needed? 2) would the Cherokee factory head unit not appreciate the 4 ohm impedance?
lee  Nov 04, 2016
1 answer
A
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with the factory system in your 2015 Jeep Cherokee. They can go over all the options for integrating with the stock system and explore other avenues if you discover this won't work for your application. I hope that helps!
david  Nov 09, 2016 (Staff)
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