Eminence 820H: 8 inch Hemp Cone 4 ohm Guitar Speaker

Price: $74.99 $64.99

Great fit for vintage Fender Champs!
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.
20 watts / 80-4.6kHz / 1″ voice coil
Available in 4 ohms only.

SKU: 820H Categories: , ,


Eminence 820H: 8 inch Hemp Cone 4 ohm Guitar Speaker

Click Here to Download 4 ohm PDF Spec Sheet

Featuring a hemp cone, 1” voice coil and lightweight 15 oz. ceramic magnet, the 4 ohm 820H offers 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 820H also offers prominent mids, but with a warm, smooth texture.


Nominal Basket Diameter 8″, 203.2mm

Nominal Impedance* 4 ohms

Power Rating** 20 Watts

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 & 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 / 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

“There are a lot of 8” amplifiers on the market, but very few have a speaker capable of delivering quality tone.” said Anthony Lucas, Eminence tech support specialist. “The 820H sounds nearly like a 10” speaker and doesn’t break up too early or fall apart like other 8” speakers I’ve heard. It could enhance the tone in any suitable amplifier on the market, and is actually the first 8” speaker I’ve ever heard that I consider worthy of putting in something like a vintage Fender Champ.”