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Maximo Ultra 603

6-1/2" 3-way component speaker system

Item # 210MAXIU63

No matter how many car audio installations I do, listening to really nice car speakers brings a certain thrill that...

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No matter how many car audio installations I do, listening to really nice car speakers brings a certain thrill that...

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Item # 210MAXIU63

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About the Maximo Ultra 603

Rediscover your favorite songs

No matter how many car audio installations I do, listening to really nice car speakers brings a certain thrill that never goes away — it's all about that moment when I hear something totally new in an old favorite song. You can count on Morel to deliver the thrills, and their Maximo Ultra Series gives you every bit of Morel's excellence and passion for sound.

Rediscover your favorite songs

No matter how many car audio installations I do, listening to really nice car speakers brings a certain thrill that never goes away — it's all about that moment when I hear something totally new in an old favorite song. You can count on Morel to deliver the thrills, and their Maximo Ultra Series gives you every bit of Morel's excellence and passion for sound.

3-way Maximo sound

This Morel Maximo Ultra 603 component speaker system uses a 6-1/2" treated paper composite woofer, a separate 2-1/2" midrange driver, and a separate 1" soft dome tweeter to deliver impressive full-range sound. The true champ of the system is the 2-1/2" driver which takes on the dynamic sound of the midrange with gusto, so that the woofer can rumble and the tweeter can soar.

Handles up to 100 watts RMS

This system can handle up to 100 watts RMS, so you'll get the best performance powering these component speakers with an aftermarket amplifier. The external crossover delivers an ideal blend of the highs, mids, and lows for an incredible stereo image. Morel also includes mounting solutions for ideal tweeter placement. You'll have to custom-mount the midrange drivers in most vehicles.

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Product highlights:

  • component speaker system includes 2 woofers, 2 midrange drivers, 2 tweeters, and 2 crossovers
  • 6-1/2" treated paper composite woofer cone with butyl rubber surround
  • 2-1/2 treated paper midrange driver
  • 1" soft dome textile tweeter
  • external Morel Crossover Resolution (MXR) crossover
  • handles up to 100 watts RMS (180 watts peak power)
  • frequency response: 50-20,000 Hz
  • sensitivity: 90.5 dB at 2.83 V
  • woofer mounting depth: 2-5/16"
  • grilles included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # 350173-200

What's in the box:

  • Two Woofers
  • Two Midrange
  • Two Tweeters (with attached 38" length of speaker wire)
  • 2 Crossovers
  • 2 Woofer grilles
  • 2 Woofer grille frames
  • 2 Midrange grilles
  • 2 Midrange grille frames
  • Grille putty
  • 2 Mesh tweeter grilles (installed)
  • 2 Oval flush mount tweeter housings (with tweeters installed)
  • 2 Flush mount brackets
  • 2 Large angled surface mount tweeter housings
  • 2 Small angled surface mount tweeter housings
  • Twelve 1" Screws
  • Eight 3/4" Screws
  • 8 Large speed clips
  • 8 Small speed clips
  • Two 0.187" Crimp-on female quick slides
  • Six 0.110" Crimp-on female quick slides
  • Two 0.187" Quick slide insulating covers
  • Six 0.110" Quick slide insulating covers
  • Installation guide
  • Morel window sticker

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2013 Toyota Tundra Crewmax

Richard from Bozeman, MT on 5/27/2019

2013 Toyota Tundra

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I have a 2013 Tundra CrewMax without the JBL option. With a little bit of work these speakers installed perfectly well. Very clean install that sounds equally as clean. At this point I imagine that the factory head unit is my weak link. These speakers sound extremely good and I am really looking forward to breaking them in. Mounted the Tweeters in the A Pillars. Modified the OEM tweeter frames to drop the midranges into the dash corner tweeter holes. Put the woofers in the factory door location with foam baffles and some polyfill, I used the 142 SAT69 adapter ring. The woofers cleared the window track just fine.

Pros: Good Build Quality Attractive Design Excellent Sound Quality

Cons: The included crimp connectors needed a bit of squishing to get them to grab firmly enough for my preference.

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8 of 8 found this helpful

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More details on the Maximo Ultra 603

Pat M.

Features & specs

General
Speaker Size 6 1/2
Design 3-way
Tweeter Design 1" Dome
Impedance (Ohms) 4
Tweeter Composition Textile
Woofer Composition Treated Paper Composite
Woofer Surround Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 90.5
Frequency Response 50 - 20k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 100
Peak Power Handling (Watts) 180
Top-mount Depth (Inches) 2 5/16
Bottom-mount Depth (Inches) 2 1/2
Cutout Diameter or Length (inches) 5 11/16

Product Research

Features

Woofer Size Classification Note: Some manufacturers, including Morel, call this size woofer a 6½". Because it requires a larger cutout than a standard 6½" speaker, Crutchfield has traditionally referred to this size woofer as a 6¾". Please enter your vehicle information to confirm fit.

Midrange Size: The midrange drivers are not a standard size, approximately 2½" diameter. They are top mounted and have these dimensions:

  • Depth: 1.38"
  • Mounting height:
    • With Grille: 0.425"
    • Without Grille: 0.18"
  • Flange height: 0.1"
  • Cutout diameter: 2.156"
  • Frame diameter: 2.561"
  • Terminal Width: 0.11"

Tweeter Mounting Options: The tweeter can be surface or flush mounted using the included adapters. The large surface mount housing also uses the oval flush mount housing and angles the tweeters at approximately 45°. The small surface mounting housing angles the tweeters at approximately 20°.

Tweeter Dimensions:

  Oval Flush Mount Large Surface Mount Small Surface Mount
Mounting Height 0.60" 1.962" 1.330"
Mounting Depth 0.875" screw depth screw depth
Cutout Diameter 1.94" N/A N/A
Frame Width 2.20" 2.332" 1.912"
Frame Depth 2.70" 2.618" 1.940"

Crossover: The outboard crossovers have screw terminal inputs and outputs (0.315" wide). A jumper on each crossover allows you to adjust the tweeter output level to 0 dB or +3 dB.

Crossover Dimensions:

  • Width: 3.90"
  • Height: 1.23"
  • Depth: 3.28"

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