Eminence Commonwealth 15" Guitar Speaker  

Product #660066

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Item Note:

This product has been discontinued but may be available as a Open Box item.

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High power rating and a big, clean sound.

The Eminence Commonwealth 15" Guitar Speaker delivers warm and rich tone, very clean and well defined. Great presence! Very full and smooth. Very little cone break-up, but likes overdrive.

  • Good for all genres

Put this replacement speaker in the cart and make your amp sound like new.


Commonwealth 15" Guitar Speaker Specifications:

  • Specification
  • Nominal Basket Diameter: 15", 381mm
  • Nominal Impedance*: 4 ohms
  • Power Rating**: 225W
  • Resonance: 52Hz
  • Usable Frequency Range: 50Hz-4kHz
  • Sensitivity***: 100.8
  • Magnet Weight: 109 oz.
  • Gap Height: 0.29", 7.2mm
  • Voice Coil Diameter: 4", 101.6mm
  • Thiele & Small Parameters
  • Resonant Frequency (fs): 52Hz
  • DC Resistance (Re): 3.72
  • Coil Inductance (Le): 0.22mH
  • Mechanical Q (Qms): 6.75
  • Electromagnetic Q (Qes): 0.57
  • Total Q (Qts): 0.53
  • Compliance Equivalent Volume (Vas): 163 liters / 5.8 cu. ft.
  • Peak Diaphragm Displacement Volume (Vd): 29cc
  • Mechanical Compliance of Suspension (Cms): 0.15mm/N
  • BL Product (BL): 11.8 T-M
  • Diaphragm Mass inc. Airload (Mms): 65 grams
  • Efficiency Bandwidth Product (EBP): 91
  • Maximum Linear Excursion (Xmax): 0.3mm
  • Surface Area of Cone (Sd): 889.6 cm2
  • Mounting Information
  • Recommended Enclosure Volume:
  • Sealed: Acceptable
  • Vented: Acceptable
  • Overall Diameter: 15.28", 388.0mm
  • Baffle Hole Diameter: 14.06", 357.0mm
  • Front Sealing Gasket: fitted as standard
  • Rear Sealing Gasket:
  • Mounting Holes Diameter: 0.26", 6.5mm
  • Mounting Holes B.C.D.: 14.57", 370.0mm
  • Depth: 6", 152mm
  • Net Weight: 22.6 lbs., 10.3 kg
  • Shipping Weight: 24.8 lbs., 11.3 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)
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