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Morel CAW 638 6" Cast Frame Woofer

Brand:|Model: CAW 638|Part # 297-084
The Classic Advanced line of woofers is based on Morel’s classic line - the renowned MW series. This woofer features an aerodynamic Uniflow™ open chassis, large diameter spider, reinforced ferrite magnets resulting in higher power handling, and low resonance frequency and Qts points.
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List Price$173.99
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Part # 297-084
  • Uniflow™ aluminum diecast chassis
  • Large 3" Hexatech™ aluminum voice coil
  • High flux ferrite double magnet system
  • Shallow profile DPC cone
  • High power handling

Product Details

Morel CAW 638 6" Cast Frame Woofer

The Classic Advanced line of woofers is based on Morel’s classic line - the renowned MW series. These products have high power handling due to the aerodynamic Uniflow™ open chassis and large diameter spiders. This woofer has reinforced ferrite magnets for the double magnet system delivering higher magnetic flux motor, resulting in a low resonance frequency and Qts points. Latest evolution of Morel's MW-164, MW-166, and MW-168 woofers.

Product Specifications
  • Nominal Diameter6"
  • Power Handling (RMS)150 Watts
  • Power Handling (max)1000 Watts
  • Impedance8 ohms
  • Frequency Response30 to 5,000 Hz
  • Sensitivity86 dB 2.83V/1m
  • Voice Coil Diameter3"
Thiele-Small Parameters
  • Resonant Frequency (Fs)43 Hz
  • DC Resistance (Re)6.4 ohms
  • Voice Coil Inductance (Le)0.63 mH
  • Mechanical Q (Qms)2.2
  • Electromagnetic Q (Qes)0.58
  • Total Q (Qts)0.46
  • Compliance Equivalent Volume (Vas)0.55 ft.³
  • Mechanical Compliance of Suspension (Cms)0.79 mm/N
  • BL Product (BL)7.3 Tm
  • Diaphragm Mass Inc. Airload (Mms)16g
  • Maximum Linear Excursion (Xmax)4.25 mm
  • Surface Area of Cone (Sd)119 cm²
Materials of Construction
  • Cone MaterialPoly Composite
  • Voice Coil Wire MaterialAluminum
  • Voice Coil FormerAluminum
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter6.3"
  • Baffle Cutout Diameter5.512"
  • Depth2.72"
  • # Mounting Holes6
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.26 ft.³
  • Sealed F374 Hz
  • Vented Volume0.7 ft.³
  • Vented F337 Hz
Morel CAW 638 6" Cast Frame Woofer
  • BrandMorel
  • ModelCAW 638
  • Part Number297-084
  • UPC844632066016
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (4 Reviews)
  • Weight3.8 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Morel CAW 638 6" Cast Frame Woofer
Morel CAW 638 6" Cast Frame Woofer is rated 4.75 out of 5 by 4.
Rated 5 out of 5 by from Morel, TC Sounds, JL Audio, Pioneer SystemThis review applies to the Morel CAT 308 - Morel CAM 558 - Morel Caw 638 - TC Sounds EPIC 10 Purchased from Parts Express.Back in the 80s I had a Morel/Zapco/Emilar 12" woofers system in a 1986 Jetta and a few years later in a 1987 VW Scirocco then 1990 VW Fox.Twenty year have passed since I did anything to one of my cars but I got the itch again and after I purchased a 2012 VW Jetta (yes another VW) decided to do it again. Doing Morels again (paying retail prices) was a no-brainer even though I work for a car audio retailer and could have bought a brand that we sold at or below cost.Which subwoofers to use was my dilemma but after months of research I chose to go with TC Sounds Epic 10 trusting the reviews on this site. I painstakingly installed the tweeters in the dash under the air vent that faces up at the windshield. The dome mid-range installed behind the left and right vents facing forward removing the vent louvers and making a plate covered with fabric...believe it or not using woman's spandex leotards which is VERY transparent. I tried nylons but the were too transparent and snagged. This is a front stage setup with no rear fill.The 6" mid-bass was installed the the factory location in a small sealed 1/2" cylinder MDF enclosure that I made.The EPIC 10s are mounted in a .5cu ft per side 1/4 round totally MDF enclosure (1" thick) mounted and firing into the car behind the rear seats.A hand made a "SOLEN components" 12db passive crossover is used between the Dome Mids and Tweeters @ 2500hzDriving the system is a Pioneer DEH-80 CD Deck into 2 JL Audio XD 700/5s (1 per channel) setup as a 3way system 150 watts to each 6"(80 - 500 bandpass), 150 watts to each Mid/Tweeter (500 and up highpass) and 180 watts to each Epic 10. I was worried about the sound quality using the JL Audio because I used to be a hardcore Zapco fan but WOW the JLs work well noticing no sonic difference vs the Zapcos I've used in the past. I'm thinking that the Morels probably are the main reason for the great sound.The Epic 10s sound GREAT as well with tight deep bass. I tuned the system by ear using the 16 band equalizer built into the Pioneer.I do plan to use a spectrum analyzer to fine tune it even more to correct any dips or peaks there may be but as it stands this setup sounds AMAZING. I've never heard a home audio system sound as good let alone a car audio and the imaging is KILLER ! ! ! I was concerned about the decision to aim the tweeters reflecting off of the windshield...not anymore.
Date published: 2013-04-10
Rated 5 out of 5 by from Accurate replacement driverThese Morel 6-1/2" drivers are the perfect replacement for the Peerless OEM in my Sonab OA14 speakers.....In a word sweet!
Date published: 2012-07-07
Rated 5 out of 5 by from Excellent woofersI used these to replace the woofers in my NHT 1.1 speakers. NHT does not supply a replacement speaker for them. The Morel CAW 638 sounds better than the original ones. There was no problem using the original crossover. Also they fit almost perfectly in the enclosure (the outside flange dia. is slightly smaller), which is difficult to find with the NHT 1.1 because of the angled front face. I'm extremely happy with these speakers.
Date published: 2010-02-23
Rated 4 out of 5 by from Outstanding WooferI had originally purchased a Dayton RS150S-8 woofer for use in a 2.1 speaker system. Although it was a nice, very well-built unit, I wasn't quite getting the sound out of the Dayton woofer that I was hoping for. I decided to spend a little extra and give the Morel CAW638 a shot.I was immediately impressed with this woofer out of the box. The build quality is excellent, with a solid cast aluminum frame, 3" voice coil, and a vented pole piece with a little filter to prevent unwanted particulates from entering and causing damage. When I mounted the woofer in the test box, I was wowed again. With a full-spectrum signal and no equalization, the CAW638 sounded very natural and balanced. With just a touch of loudness correction on my amplifier, I was impressed with the depth of bass I could get out of this woofer in a sealed box--strong output down to about 60 or 70 Hz. My only complaint with this unit is the price--it's pretty expensive, but it was money well-spent for good sound.I am using this woofer in a 0.25 cu. ft. sealed box with a Morel CAT308 tweeter crossed over at 2.5 kHz with a slope of 12 dB/octave.
Date published: 2009-07-02
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Product Q&A

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Morel CAW 638 6" Cast Frame Woofer

What type of in-room experience will I get with this driver? My room has 9 foot ceilings, and the listening area is about 300 square ft. If I have two of these (one each in tower enclosures) driven with about 160 WPC, will I feel the bass or just hear it?

Asked by: btucker
I highly doubt you will feel the bass with these drivers. In in a properly sized and tuned enclosure they will reach surprisingly low, but will not handle full power without a lot of excursion problems. If you want these to handle their RMS power potential you will have to have them high passed around 100 Hz to a subwoofer.
Answered by: MattP
Date published: 2014-08-20

I am considering using this driver in a two-way set-up crossed at 1000 hz. I have no doubts to the clarity of the mid range, but I am skeptical about the bass response. In a ported enclosure will I get bass into the 30's as is advertised? Thanks

Asked by: Btuck80
Yes this driver will extend into the 30's in about 0.75 cubic feet total. With a 2" diameter, 8" long port, your tuning frequency will be 37 Hz.
Answered by: MattP
Date published: 2014-08-20
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