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Product 660065

Eminence Commonwealth 12" 225W Guitar Speaker   

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The Eminence Commonwealth 12" Guitar Speaker delivers warm and rich tone that is very clean and well-defined. This Eminence speaker has a very full a...Click To Read More About This Product

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The Eminence Commonwealth 12" Guitar Speaker delivers warm and rich tone that is very clean and well-defined. This Eminence speaker has a very full and smooth presence. Very little cone break-up, but likes Overdrive. Clean, warm, full, non-distorted, unadulterated guitar tone for all genres.

  • Voice Coil Diameter: 4", 101.6mm
  • Magnet Weight: 109 oz.
  • Power Rating.: 225W
  • Sensitivity: 100

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Commonwealth 12" 225W Guitar Speaker

  • Specification
    Nominal Basket Diameter: 12", 304.8mm
    Nominal Impedance*: 8 ohms
    Power Rating**: 225W
    Resonance: 50Hz
    Usable Frequency Range: 50Hz-4kHz
    Sensitivity***: 100
    Magnet Weight: 109 oz.
    Gap Height: 0.29", 7.2mm
    Voice Coil Diameter: 4", 101.6mm

    Thiele & Small Parameters
    Resonant Frequency (fs): 50Hz
    DC Resistance (Re): 6.34
    Coil Inductance (Le): 0.46mH
    Mechanical Q (Qms): 6.61
    Electromagnetic Q (Qes): 0.35
    Total Q (Qts): 0.33
    Compliance Equivalent Volume (Vas): 90 liters / 3.2 cu. ft.
    Peak Diaphragm Displacement Volume (Vd): 36cc
    Mechanical Compliance of Suspension (Cms): 0.24mm/N
    BL Product (BL): 15.7 T-M
    Diaphragm Mass inc. Airload (Mms): 43 grams
    Efficiency Bandwidth Product (EBP): 143
    Maximum Linear Excursion (Xmax): 0.7mm
    Surface Area of Cone (Sd): 519.5 cm2

    Mounting Information
    Recommended Enclosure Volume:
    Sealed: Acceptable
    Vented: Acceptable
    Overall Diameter: 12.28", 312.0mm
    Baffle Hole Diameter: 11.08", 281.3mm
    Front Sealing Gasket: fitted as standard
    Rear Sealing Gasket:
    Mounting Holes Diameter: 0.27", 6.8mm
    Mounting Holes B.C.D.: 11.69", 297.0mm
    Depth: 5", 127mm
    Net Weight: 21.5 lbs., 9.8 kg
    Shipping Weight: 23.2 lbs., 10.5 kg

    Materials of Construction
    Aluminum voice coil
    Polyimide former
    Ferrite magnet
    Vented core
    Die-cast aluminum basket
    Paper Cone
    Cloth cone edge
    Aluminum dust cap

    *Please inquire about alternative impedances.
    **Multiple units exceed published rating evaluated under EIA 426A noise source and test standard while in a free-air, non-temperature controlled environment.
    ***The average output across the usable frequency range when applying 1W/1M into the nominal impedance. Ie: 2.83V/8ohms, 4V/16ohms.
    Eminence response curves are measured under the following conditions: All speakers are tested at 1w/1m using a variety of test set-ups for the appropriate impedance | LMS using 0.25" supplied microphone (software
    calibrated) mounted 1m from wall/baffle | 2ft. X 2ft. baffle is built into the wall with the speaker mounted flush against a steel ring for minimum diffraction | Hafler P1500 Trans-Nova amplifier | 2700 cu.ft. chamber with
    fiberglass on all six surfaces (three with custom-made wedges)


Review Snapshot

by PowerReviews
EminenceCommonwealth 12" 225W Guitar Speaker

(based on 6 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 6 customers

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(9 of 9 customers found this review helpful)


Excellent Speaker

By Mckyhart

from Miami, FL

See all my reviews

Comments about Eminence Commonwealth 12" 225W Guitar Speaker:

I love it. It's pretty heavy, so anyone considering it for a 2x12 ought to have a young, strong back, and anyone considering it for a 4x12 ought to consider selling the 4x12 cab and buying a couple 2x12s. Unless you have roadies, that is. Even in a 1x12, it's good and heavy. But the sound is worth it; you can't get alnicos to sound like this. It's a magnificent speaker (far better than the Emi Red White and Blue that it replaced -- the RWB sounds like a cheap knock off compared to this), and I recommend it strongly to anyone looking for a well-rounded, versatile tone machine.
Features are everything they should be -- aluminum dustcap for those beautiful, ringing highs, a big ol' ceramic magnet for warmth and a well-designed cone for a well-balanced sound.
Construction quality is solid, the packaging that Eminence speakers come in is plenty protective, the leads felt like they could have been a bit sturdier, but they didn't feel flimsy, either.

The sound, though. That's where this baby really shines. As I wrote in the "Features" section, the warmth in the mids and bass (a warmth that never crosses into unpleasant boominess or lack of clarity), the shining, bell-like ring from the aluminum dustcap, and a pleasant balance of sound are all wonderful. It sounds very nice at low volumes, and it just sings at high volumes. It's at its best when a good deal of air is being moved by it, but it's still a lot better than any other guitar speaker (compared to other vintage JBL or Fender-style speakers) that I've played through even at lower volumes, and that includes the JBLs in an all-original 1967 Fender Super Reverb and an all-original '61 Fender Concert.

If you're thinking of getting a JBL for a Jerry sound or other vintage sound, this is a speaker worth seriously considering. For country players, psychedelic rock players, and anyone who wants a perfectly balanced, beautiful-sounding driver, this is a speaker worth seriously considering. Not gonna tell you what to buy, since it's all subjective, but if I could bring you to my house and let you play through this speaker, I would. It just sounds so good.
Considering that an original or original recone kit JBL will run you around twice this price (and considering that this is a new speaker that, while not as exclusively treble-heavy as the JBL, has all the sparkle and clarity of it and more versatility in its mid and bass reproduction), this easily rates a "10".

(4 of 4 customers found this review helpful)


The Finest Replacement Speaker


from Center Point, AL

See all my reviews

Comments about Eminence Commonwealth 12" 225W Guitar Speaker:

In all my years of playing guitar, I've never been more pleased with a new speaker. Yes, this monster is heavy... but it's worth the load. The tone is deep, firm, and wide. The lows go below 50k, the highs past 5,oook. The highs are clear and pure. This is the IDEAL speaker for a modeling amp like a Line-6 or Vox Valvetronix. This speaker does everything. With its outrageous power rating, I'm not even afraid to plug my bass into it. It's worth the price. I love this speaker.

(2 of 2 customers found this review helpful)



By Spartacus24

from Paul Id.

About Me Experienced

See all my reviews

Ask me a question


  • Easy To Use
  • Good Quality
  • Improves Sound


    Best Uses

    • Backup
    • Concerts
    • Practicing

    Comments about Eminence Commonwealth 12" 225W Guitar Speaker:

    I put one of these in a 2x12 cab and I was not disapointed. I had been shopping for a JBL but I didn't want to pay a lot of money for a used speaker so after doing some research and reading Emminence's website I decided to try the Commonwealth. It sounds so good I forgot all about wanting a JBL. If you've ever heard JBL's this speaker is as close as you'll ever get. If you read Emminence's description of this speaker it is spot on: Loud,great presence,punchy and warm with good clear highs. It weighs a lot but it's worth the sound.

    (2 of 2 customers found this review helpful)


    Looking for JBLD120 , here you go.

    By Anonymous

    from Undisclosed

    Comments about Eminence Commonwealth 12" 225W Guitar Speaker:

    If your looking for a JBLD120 and don't want to spend a fortune, here you go. I love skynyrd and southern rock alike, and wanted the sound of it. I went out and bought a peavey mace and a matching 2x12 cab. I replaced the speakers with these, oh my god! I also play a peavey classic 100 head through them. Oh my god these are great for southern rock/rock. Buy them now before something bad happens and you can't get them again. Thanks.

    (2 of 2 customers found this review helpful)


    Absolutely INSANE

    By IbanezRGuy

    from New Kensington, PA

    Comments about Eminence Commonwealth 12" 225W Guitar Speaker:

    I've always been disappointed with guitar speakers, small voice coils, small magnets, and low power handling...UNTIL NOW!!These things are absolutely ridiculous. 4" Voice Coils, HUGE magnet, 225w RMS Power Handling. Almost a subwoofer but with sweet midrange and so-so highs. I loaded two of these in my 4x12 Mesa Cab with 2 stock speakers. INSANE bottom end! I wouldn't want only these speakers, just because the tone isn't all there from what I can hear, but the bottom is. The way I run my setup anyway is I have these on the bottom of my cab, and on one channel of my power amp, and the other two on the top and another channel.

    (1 of 1 customers found this review helpful)


    Fantastic speaker

    By Kynyrd

    from Manteca, CA

    About Me Professional Musician

    See all my reviews

    Comments about Eminence Commonwealth 12" 225W Guitar Speaker:

    After reading the other positive reviews I bought one and put it in a 67 deluxe reverb.Outstanding tone and clarity.I took it to a gig to start the break in and everyone noticed it.Very warm and efficient.It is the best sounding speaker I have and I have many different brands.Huge thumbs up here.

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