Haut parleur 30cm Eminence BLACK MOUNTAIN™
[BLACK MOUN-8] Avis/Critiques SPECIFICATION
Nominal Basket
Diameter 12", 304.8mm
Nominal Impedance* 8 ohms
Power
Rating
Watts 30W
Music Program
Resonance 69Hz
Usable Frequency Range 70Hz-5.5kHz
Sensitivity*** 101.3
Magnet Weight 35 oz.
Gap Height
0.312", 7.94mm
Voice Coil Diameter 1.75", 44.45mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 68.58Hz
DC Resistance (Re) 6.44
Coil Inductance (Le) .62 mH
Mechanical Q (Qms) 8.13
Electromagnetic Q (Qes) 0.53
Total Q (Qts) 0.50
Compliance Equivalent Volume (Vas) 69.64 liters / 2.46 cu.ft.
Peak
Diaphragm Displacement Volume (Vd) 40cc
Mechanical Compliance of
Suspension (Cms) 0.19 mm/N BL Product (BL) 12.07
T-M
Diaphram Mass inc. Airload (Mms) 27.8
grams
Efficiency Bandwidth Product (EBP) 129.2
Maximum Linear Excursion (Xmax) 0.8mm
Surface Area of
Cone (Sd) 506.7 cm2
Maximum Mechanical Limit (Xlim)
cm2
Maximum Mechanical Limit
(Xlim)
MOUNTING INFORMATION
Recommended
Enclosure
Sealed Acceptable
Vented
Overall Diameter 12.26",
311.4mm
Baffle Hole Diameter 11.06", 280.9mm
Front Sealing Gasket fitted as standard
Rear Sealing
Gasket fitted as standard
Mounting Holes Diameter
0.25", 6.4mm
Mounting Holes B.C. D. 11.71",
297.4mm
Depth 5.95", 151.1mm
Net Weight
8.9 lbs, 4.04 kg
Shipping Weight 11.1 lbs, 5
kg
MATERIALS OF
CONSTRUCTION
Coil Construction
Copper Voice Coil
Coil Former Paper former
Magnet Composition Alnico magnet
Core
Details
Basket Materials Pressed steel
basket
Cone Composition Seamed Paper Cone
Cone Edge Composition Paper cone edge
Dustcap
Composition Treated paper 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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