HP 30cm acoustic Eminence ACOUSTINATOR™ NH2008
[ACOU NH2008-8] Avis/Critiques Recommended for acoustic Instrument applications in both sealed and vented
enclosures. Hemp™ cone lends a very “woody” tone.
SPECIFICATION
Nominal Basket
Diameter 8", 203.2mm
Nominal Impedance* 8 ohms
Power
Rating
Watts 150W
Music Program
Resonance 47Hz
Usable Frequency Range 60Hz-3.3kHz
Sensitivity*** 94.5
Magnet Weight 4 oz.
Gap Height
0.28", 7.2mm
Voice Coil Diameter 2", 50.8mm
THIELE & SMALL
PARAMETERS
Resonant Frequency (fs) 47Hz
DC Resistance (Re) 5.4
Coil Inductance (Le) 0.44mH
Mechanical Q (Qms) 6.5
Electromagnetic Q (Qes) 0.29
Total Q (Qts) 0.28
Compliance Equivalent Volume (Vas) 34
liters / 1.19 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 76cc
Mechanical Compliance of Suspension (Cms) 0.50mm/N
BL
Product (BL) 11.2 T-M
Diaphram Mass inc. Airload
(Mms) 23 grams
Efficiency Bandwidth Product (EBP)
162
Maximum Linear Excursion (Xmax) 3.5mm
Surface Area of Cone (Sd) 218.2 cm2
Maximum Mechanical
Limit (Xlim) 8.0mm
MOUNTING INFORMATION
Recommended Enclosure
Sealed 8-9.3 liters/
0.28-0.33 cu.ft.
Vented 12-25.5 liters/ 0.41-0.9
cu.ft.
Overall Diameter 8.24", 209.2mm
Baffle Hole Diameter 7.13", 181mm
Front Sealing
Gasket fitted as standard
Rear Sealing
Gasket
Mounting Holes Diameter 0.22",
5.5mm
Mounting Holes B.C. D. 7.75", 196.9mm
Depth 3.6", 92mm
Net Weight 3.2 lbs., 1.5
kg
Shipping Weight 3.9 lbs., 1.8 kg
MATERIALS OF
CONSTRUCTION
Coil Construction
Copper voice coil
Coil Former Polyimide former
Magnet Composition Neodymium magnet
Core Details
Non-vented core
Basket Materials Pressed steel
basket
Cone Composition Hemp Cone ™
Cone
Edge Composition Santoprene cone edge
Dustcap Composition
Solid composition felt dust cap
FOOTNOTES
* Please consult
eminence.com for specifications of models with alternative impedances.
**
Multiple units exceed published rating evaluated under EIA 426A noise source and
test standard while in a free-air, non-temperature controlled environment.
*** The average output across the usable frequency range when applying 1W/1M
into the nominal impedance. Ie: 2.83V/8ohms, 4V/16ohms. Eminence response curves
are measured under the following conditions: All speakers are tested at 1w/1m
using a variety of test set-ups for the appropriate impedance | LMS using 0.25”
supplied microphone (software calibrated) mounted 1m from wall/baffle | 2ft. X
2ft. baffle is built into the wall with the speaker mounted flush against a
steel ring for minimum diffraction | Hafler P1500 Trans-Nova amplifier | 2700
cu.ft. chamber with fiberglass on all six surfaces (three with custom-made
wedges).
**** BETA 8CX, 10CX, 12CX and ACOUSTINATOR™ CX2008 are coaxial
speakers with tweeter sold separately. Published Usable Frequency response
contingent upon use of APT 50 HF Driver.
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