Speaker - Eminence® Patriot, 8", 820H, 20W, 4Ω

Speaker - Eminence® Patriot, 8", 820H, 20W, 4Ω

Speaker - Eminence® Patriot, 8", 820H, 20W, 4Ω image 1
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Lead/Rhythm 8" guitar speaker. A rich, warm, full bodied tone that emulates a larger cone, with fat, punchy lows, smooth, but defined highs, and a nice break up. The mids are prominent, but with a warm, smooth texture

Item ID:
Eminence Part Number:
Magnet Type:
RoHS Compliant
Product Measurements by Type
Baffle Hole Diameter7.13 in
Basket MaterialPressed Sheet Steel
Coil Constructioncopper voice coil
Coil FormerPolyimide former
Coil Inductance (le)0.33 mH
Cone CompositionPaper cone
Cone Edge CompositionFull paper cone
Core DetailsNone-vented core
D.C. Resistance (Re) 3.64 Ω
Depth3.06 in.
Diameter8 in.
Driver Volume Displaced0.51 liters
Dust Cap CompositionZurette dust cap
Efficiency Bandwidth Product (ebp)156
Electrical Q Factor (Qes)0.92
Equivalent Acoustic Volume (VAS)9.62 liters
Force Factor (BxL)5.74 Wb/m
Front Sealing GasketYes
Gap Height6.4 mm
Linear Displacement, maximum (XMAX)1.59 mm
Magnet CompositionFerrite
Magnet Weight15 oz.
Mechanical Compliance (CMS)0.13 mm/N
Mechanical Moving Mass (MMS)9 g
Mechanical Q Factor (QMS)18.78
Mounting Hole Bolt Circle Diameter196.9 mm
Mounting Hole Diameter5.6mm
Nominal Basket Diameter8 in.
Nominal Impedance4 Ω
Overall Diameter209.3 mm
Peak Diaphragm Displacement Volume (vd)36.7 cm3
Power Rating20 W
Program Power Rating40 W
Recommended Enclosure Volume, sealedAcceptable
Recommended Enclosure Volume, ventedAcceptable
Resonance144 Hz
Resonance Frequency (ƒS)144 Hz
Sensitivity96.1 dB
Surface Area Of Cone (sd)230.9 cm2
Total Q Factor (QTS)0.88
Usable Frequency Range80 Hz - 4.6 kHz
Voice Coil Diameter1 in.
Packaging Information
Packaging Dimensions9.25 in. × 9.25 in. × 4.125 in.
Weight (Packaging)3.9 lbs.

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Specifications, Files, and Documents

Sound Samples:

PDF: Specification Sheet Specification Sheet239.45 KB

Questions and Answers

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Asked by Anonymous on November 6th, 2017.
Matt H.
November 9th, 2017
Staff Member
This speaker has a diameter of 8" and a depth of 3.06”. You will want to measure your speaker/cab to insure a proper fit.

Product Reviews

5.00 out of 5 based on 1 reviews
- February 15th, 2017
5 out of 5

I have never had a hemp-cone speaker before so I don't know if my experience is typical. This speaker took a long time to break in for an 8", about 20 hours, but it sounds fantastic when done. The difference between NEW sound and broken in sound is bigger than paper cones. Very organic, wide sound. It does sound like a bigger speaker.