Specification Sheet

Higher Data = SPL AVG smoothed curve 1/6
Lower Data = Import: LoFreqCorr97.txt
Person:
Company:
Project:
File: 820H_recovered.lib
Oct 31, 2013
Thr 1:59 pm
4.6.0.371
May/29/2007
Notes Map
49: SPLZ Spliced @ 175.0000 1/6
20 Hz 50 100 200 500 1K 2K 5K 10K20K
dBSPL
60
65
70
75
80
85
90
95
100
Ohm
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
SPL vs Freq
Copper voice coil
Polyimide former
Ferrite magnet
None-vented core
Pressed steel basket
Paper cone
Full paper cone
Zurette dust cap
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
8.0”, 203 mm
4 Ω
20 W
144 Hz
80 Hz – 4.6 kHz
96.1 dB
3.64 Ω
15 oz.
.250”, 6.4 mm
1.0”, 25 mm
Patriot Guitar
FREQUENCY RESPONSE
*
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.
Specification MaterialS of conStructionMountinG inforMation
Nominal Basket Diameter
Nominal Impedance*
Power Rating**
Resonance (Fs)
Usable Frequency Range
Sensitivity***
DC Resistance (Re)
Magnet Weight
Gap Height
Voice Coil Diameter
Enclosure Type
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
* See footnotes on page 2 for information regarding nominal impedance, power rating and sensitivity.
8”
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