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Eminence 820H Patriot Series 8" 20-Watt Replacement Guitar Speaker 4 Ohm

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Eminence Replacement Speaker

NOTE: Speakers are non-returnable.

The Eminence Cannabis Rex guitar speaker lets your laid-back style come through. Clean and full, with lots of body and sparkle. Smokey smooth with high-end definition. Country, Jazz or Classical guitarists take notice.

The 820H is a 20-watt, 4 ohm hemp cone speaker with rich, warm, full bodied tone with fat, punchy lows, smooth, but defined highs, and a nice break up. Prominent mids, but with a warm, smooth texture.

Eminence Cannabis Rex Replacement Speaker Specifications:
  • Nominal Basket Diameter - 8", 203.2mm
  • Nominal Impedance - 4 ohms
  • Watts - 20W
  • Music Program - N/A
  • Resonance - 143.55Hz
  • Usable Frequency Range - 80Hz - 4.6kHz
  • Sensitivity - 96.1dB
  • Magnet Weight - 15 oz.
  • Gap Height - 0.25", 6.35mm
  • Voice Coil Diameter - 1", 25.4mm


Thiele and small parameters
  • Resonant Frequency (fs) - 143.55Hz
  • DC Resistance (Re) - 3.64
  • Coil Inductance (Le) - 0.33mH
  • Mechanical Q (Qms) - 18.78
  • Electromagnetic Q (Qes) - 0.92
  • Total Q (Qts) - 0.88
  • Compliance Equivalent Volume (Vas) - 9.62 liters / 0.34 cu.ft.
  • Peak Diaphragm Displacement Volume (Vd) - 36.7cc
  • Mechanical Compliance of Suspension (Cms) - 0.13mm/N
  • BL Product (BL) - 5.74 T-M
  • Diaphragm Mass Inc. Airload (MMs) - 9.25 grams
  • Efficiency Bandwidth Product (EBP) - 155.7
  • Maximum Linear Excursion (Xmax) - 1.59mm
  • Surface Area of Cone (Sd) - 230.9 cm2
  • Maximum Mechanical Limit (Xlim) - 0mm


Mounting information
  • Recommended Enclosure Volume
  • Sealed - N/a
  • Vented - N/a
  • Driver Volume Displaced - 31.12 cu.in. / 0.51 liters
  • Overall Diameter - 8.24", 209.3mm
  • Baffle Hole Diameter - 7.13", 181.1mm
  • Front Sealing Gasket - Fitted as standard
  • Rear Sealing Gasket - N/A
  • Mounting Holes Diameter - 0.22", 5.58mm
  • Mounting Holes B.C.D. - 7.75", 193.85mm
  • Depth - 3.06", 77.72mm
  • Net Weight - 3.1 lbs, 1.41 kg
  • Shipping Weight - 3.9 lbs, 1.77 kgs


Materials of construction
  • Coil Construction - Copper voice coil
  • Coil Former - Polyimide former
  • Magnet Composition - Ferrite magnet
  • Core Details - None-vented core
  • Basket Materials - Pressed steel basket
  • Cone Composition - Paper cone
  • Cone Edge Composition - Full paper cone
  • Dust Cap Composition - Zurette dust cap


Eminence 820H Patriot Series 8" 20-Watt Replacement Guitar Speaker 4 Ohm Specs:
Application Guitar
Size 8"
Impedance 4 ohms
Power Handling 20W
Magnet Type Ferrite
Frequency Range 80Hz-4.6kHz
Magnet Weight 15 oz.
Unit Weight 3.9 lbs.

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See Also: Eminence , Eminence Guitar Amp Replacement Speakers

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