Eminence Alpha-6C 6" Midrange 4 Ohm

Brand:|Model: Alpha-6C
The Alpha-6C boasts a 4-ohm impedance, increased body weight, and stiffer, more aggressive water proofing treatment on the cone making it ideal for car audio use.
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List Price$49.99
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Part # 290-399
  • Kapton coil former
  • Polyamide-imide coated copper voice coil
  • Pressed steel basket
  • Paper cone with cloth cone edge
  • Solid composition paper dust cap

Product Details

Eminence Alpha-6C 6" Midrange 4 Ohm

Recommended for professional audio midrange applications in a sealed cabinet, or as a mid-bass in a vented satellite enclosure. The Alpha-6C boasts a 4-ohm impedance, increased body weight, and stiffer, more aggressive water proofing treatment on the cone making it ideal for car audio use.

Product Specifications
  • Nominal Diameter6"
  • Power Handling (RMS)100 Watts
  • Power Handling (max)200 Watts
  • Impedance4 ohms
  • Frequency Response95 to 5,500 Hz
  • Sensitivity93.3 dB 1W/1m
  • Voice Coil Diameter1.5"
  • Magnet Weight20 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)107 Hz
  • DC Resistance (Re)3.20 ohms
  • Voice Coil Inductance (Le)0.28 mH
  • Mechanical Q (Qms)6.12
  • Electromagnetic Q (Qes)0.49
  • Total Q (Qts)0.45
  • Compliance Equivalent Volume (Vas)0.20 ft.³
  • Mechanical Compliance of Suspension (Cms)0.24 mm/N
  • BL Product (BL)6.40 Tm
  • Diaphragm Mass Inc. Airload (Mms)9.3g
  • Maximum Linear Excursion (Xmax)3.5 mm
  • Surface Area of Cone (Sd)129.9 cm²
Materials of Construction
  • Cone MaterialPaper
  • Surround MaterialCloth
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerKapton® / Polyimide
  • Basket / Frame MaterialSteel
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter6.59"
  • Baffle Cutout Diameter5.69"
  • Depth2.80"
  • # Mounting Holes4
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.09 ft.³
  • Sealed F3188 Hz
  • Vented Volume0.24 ft.³
  • Vented F394 Hz
Eminence Alpha-6C 6" Midrange 4 Ohm
  • BrandEminence Speaker
  • ModelAlpha-6C
  • Part Number290-399
  • UPC876358000845
  • Product CategoryPro Woofers, Subwoofers & Midrange Speakers
  • Unit of MeasureEA
  • Product Rating
    (8 Reviews)
  • Weight5.2 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.

View similar products to the Eminence Alpha-6C 6" Midrange 4 Ohm
in the Pro Woofers, Subwoofers & Midrange Speakers product category.


Eminence Alpha-6C 6" Midrange 4 Ohm
Eminence Alpha-6C 6" Midrange 4 Ohm is rated 4.375 out of 5 by 8.
Rated 5 out of 5 by from 6c6-4wow! smooth, dimensional. vocals/guitars clear. put in 300-7064 heavily braced reduced to .40 ft/cube ported cabs. per E's specs. pages 7,8. damped with 80/20 cotton/Dacron high density quilter's mat. use with home stereo, stage monitors, point/source mix down or live sound PA.. I will use in home and keyboards live.
Date published: 2014-07-28
Rated 5 out of 5 by from 4 Ohm Eminence Mid-Range SpeakerMost speakers by Eminence are 8 Ohm and not 4 Ohm like these. Installed 4, or 2 per side wired in parallel, for a 2 Ohm resistance with a 4-way active crossover system in a boat. Band passed at 250 Hz - 3000 Hz and they blend in extremely well with all the other speakers. Guitar and vocal reproduction sounds great.
Date published: 2013-10-04
Rated 3 out of 5 by from Improved My Old SpeakersThese two speakers made my old Speakerlab 7C's sound better than they ever did before. The midrange is now clearer and crisper, not muddied like these speakers originally sounded. Also, these drivers appear very-well made.
Date published: 2009-09-26
Rated 5 out of 5 by from very solidgreat mid woofer for a loud car system but i had to send mine back ..the magnets where too big for my doors..am sad now
Date published: 2009-06-27
Rated 4 out of 5 by from Works great in a guitar ampFew speakers fit a 6 1/2 inch cabinet. This one does and it sounds terrific.
Date published: 2008-10-13
Rated 4 out of 5 by from Works great in a guitar ampPut one in a Songworls amp and got a real improvement. Only complaints are I wish the bottom end were a big bigger but that's sort of unreasonable considering the size and target application! Didn't get a dust cover listed in the add but no biggie. Highly recommended for small guitar amps. Its just about impossible to find a 6 1/2 specifically voiced for guitar these days. This one come darn close!
Date published: 2008-10-01
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Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Eminence Alpha-6C 6" Midrange 4 Ohm

closed cab. states; 0.09 feet/cube. Is this correct? I doubt the speaker will physically fit into a cab. that small. I am considering it in a 3-way with twin ring tweeters (270-252) and gw 1058. Both I use and love in other projects.

Asked by: fisherchuck
As a midrange the cabinet volume will have minimal effect on performance, especially if crossed above 250 Hz.
Answered by: MattP
Date published: 2014-07-06

I am replacing a Samson studio monitor (Resolv 65) woofer, is this one close to what I need? According to the options at the left of the product selection, It is the only one.

Asked by: Dave2015
I would not recommend this woofer as a replacement for that monitor. Generally studio monitors use proprietary drivers so finding after market replacements can be very difficult. I would recommend contacting our tech support for more help with this, 800-338-0531 x1 or tech@parts-express.com.
Answered by: MattP
Date published: 2014-05-27

What crossover would i need with this speaker,high pass/high pass & low pass/2 way/3 way ?

I am putting these speakers in my van and powering them with an old (but good) Rockford Fosgate ,Punch 150 amp.,it has treble and base knobs on it but I do not know if these will pass as a crossover.
Asked by: Nomad
The type of crossover you will want to use is determined by the intended application and what they will be paired with. I would recommend a high pass filter regardless, probably something around 80 Hz.
Answered by: MattP
Date published: 2013-04-29

Is there a way I can get a tweeter to fit across the top of this speaker?

I'm fitting it into a Dawn speaker System, but need the highs too. This will fit into the satellite housing that fires the sound up and into a cone.
Asked by: ModEmotions
Maybe...I have used metal grilles to give a little extra depth above a speaker and a fairly stiff frame to attach a tweeter. It usually requires some "backwoods metalwork" to get the tweeter mounted, but any unfortunate details on your build would not only be covered by the tweeter (as mine have been), but might not be easily visible at all.I could not find an exact-fit grille, but the 6 and 1/2" grille I added below would work. If you center everything and eliminate any buzz or rattle problems (from grille parts or unsecured tweeter wires) you will get what you want.I will be watching to see if someone offers a mor elegant solution, but this one will work.
Answered by: Bushman
Date published: 2012-07-13
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