820H
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.
Patriot Guitar
8”
SPECIFICATION MATERIALS OF CONSTRUCTIONMOUNTING INFORMATION
Nominal Basket Diameter
8.0”, 203 mm
Nominal Impedance*
Power Rating**
Resonance (Fs)
Usable Frequency Range
Sensitivity***
DC Resistance (Re)
Magnet Weight
Gap Height
Voice Coil Diameter
FREQUENCY RESPONSE
dBSPL
100
95
90
85
80
75
70
65
60
20 Hz 50 100 200 500 1K 2K 5K 10K 20K
49: SPLZ Spliced @ 175.0000 1/6
Higher Data = SPL AVG smoothed curve 1/6
Lower Data = Import: LoFreqCorr97.txt
Notes Map
4.6.0.371
May/29/2007
Person:
Company:
LE AR N MO RE AT EM IN EN CE .C OM
*
Project:
File: 820H_recovered.lib
144 Hz
80 Hz – 4.6 kHz
96.1 dB
3.64 Ω
15 oz.
.250”, 6.4 mm
1.0”, 25 mm
Oct 31, 2013
Thr 1:59 pm
20 W
Enclosure Type
4 Ω
Closed Back
Open Back
Overall Diameter
Baffle Hole Diameter
Depth
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Mounting Holes B.C.D.
Net Weight
Shipping Weight
Ohm
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
* See footnotes on page 2 for information regarding nominal impedance, power rating and sensitivity.
Acceptable
Acceptable
8.24’’, 209.3 mm
7.13’’, 181.1 mm
3.06”, 77.7 mm
Yes
N/A
0.22’’, 5.6 mm
7.75’’, 196.9 mm
3.10 lbs , 1.41 kg
3.90 lbs , 1.77 kg
Copper voice coil
Polyimide former
Ferrite magnet
None-vented core
Pressed steel basket
Paper cone
Full paper cone
Zurette dust cap