8 inch Eminence Lead / Rhythm Guitar Replacement Speaker - Hemp Eminence Speaker Basket
820H 8" Lead / Rhythm Guitar Speaker - Hemp
8 inch Eminence Lead / Rhythm Guitar Replacement Speaker - Hemp Eminence Speaker Side
8 inch Eminence Lead / Rhythm Guitar Replacement Speaker - Hemp Eminence Speaker Frequency Response
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820H 8" Lead / Rhythm Guitar Speaker - Hemp

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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.

Characteristics 

 

Series Patriots
Model 820H
Application 8" Open or Closed Back
Configuration 1, 2, or 4 X 8"
Low End Response Aggressive
Low End Shape Fat
Mid-Range Response Moderate
Mid-Range Shape Warm
High-End Response Moderate
Volume/Power Loudest
Overall Coloration* 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.
Break-up Modes Medium
Power Range Up to 20 watts
Instrument* Lead/Rhythm Guitar, Harmonica
Genre of Music* Jazz, Rock, Country, and Blues

Specifications

Download Spec Sheet

SPECIFICATION
Nominal Basket Diameter 8", 203 mm
Nominal Impedance* 4 Ω
Power Rating*
Program Power 40 W
Watts 20 W
Resonance 144 Hz
Usable Frequency Range 80 Hz - 4.6 kHz
Sensitivity* 96.1 dB
Magnet Weight 15 oz.
Gap Height 0.25", 6.4 mm
Voice Coil Diameter 1", 25 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 144 Hz
DC Resistance (Re) 3.64 Ω
Coil Inductance (Le) 0.33m H
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) 36.7 cc
Mechanical Compliance of Suspension (Cms) 0.13 mm/N
BL Product (BL) 5.74 T-M
Diaphragm Mass Inc. Airload (MMs) 9 grams
Efficiency Bandwidth Product (EBP) 156
Maximum Linear Excursion (Xmax) 1.59 mm
Surface Area of Cone (Sd) 230.9 cm2
Maximum Mechanical Limit (Xlim) N/A
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed Acceptable
Vented Acceptable
Driver Volume Displaced 0.018 cu.ft. / 0.51 liters
Overall Diameter 8.24", 209.3 mm
Baffle Hole Diameter 7.13", 181.1 mm
Front Sealing Gasket Yes
Rear Sealing Gasket N/A
Mounting Holes Diameter 0.22", 5.6mm
Mounting Holes B.C.D. 7.75", 196.9mm
Depth 3.06", 77.7 mm
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 Non-vented core
   
Basket Materials Pressed steel basket
Cone Composition Hemp paper cone
Cone Edge Composition Full paper cone
Dust Cap Composition Zurette dust cap


Frequency Response

response graph