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.

Eminence Commonwealth 12" 225W Guitar Speaker Features:

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

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Eminence Commonwealth 12" 225W Guitar Speaker Specifications:

• 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)