Haut parleur Eminence KAPPA-12A
[KAPPA-12A-8] Avis/Critiques SPECIFICATION
Nominal Basket
Diameter 12", 304.8mm
Nominal Impedance* 8 ohms
Power
Rating
Watts 450W
Music Program 900W
Resonance 45Hz
Usable Frequency Range 62Hz-4.2kHz
Sensitivity*** 99.3
Magnet Weight 80 oz.
Gap Height
0.375", 9.53mm
Voice Coil Diameter 3", 76.2mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 45Hz
DC Resistance (Re) 5.41
Coil Inductance (Le) 0.77mH
Mechanical Q (Qms) 7.76
Electromagnetic Q (Qes) 0.28
Total Q (Qts) 0.27
Compliance Equivalent Volume (Vas) 112.1 liters / 4.0 cu.ft.
Peak
Diaphragm Displacement Volume (Vd) 166cc
Mechanical Compliance of
Suspension (Cms) 0.30mm/N
BL Product (BL) 15.2 T-M
Diaphram
Mass inc. Airload (Mms) 42 grams
Efficiency Bandwidth Product
(EBP) 161
Maximum Linear Excursion (Xmax) 3.2mm
Surface Area
of Cone (Sd) 519.5 cm2
Maximum Mechanical Limit
(Xlim) 11.5mm
MOUNTING INFORMATION
Recommended Enclosure
Sealed
Vented 34-62 liters/1.2-2.2 cu.ft.
Overall Diameter 12.26", 311.4mm
Baffle Hole
Diameter 11.0", 279.5mm
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", 297.5mm
Depth 5.63",
143mm
Net Weight 14.9 lbs., 6.8 kg
Shipping Weight 17.9 lbs., 8.2 kg
MATERIALS OF
CONSTRUCTION
Coil Construction
Aluminum voice coil
Coil Former Polyimide former
Magnet Composition Ferrite magnet
Core Details
Vented core
Basket Materials Pressed steel
basket
Cone Composition Paper Cone
Cone Edge Composition Cloth cone edge
Dustcap
Composition Solid composition paper dust cap
Recommended for professional audio as a mid/hi or full range in a vented
enclosure.
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 on axis output across the usable frequency range when applying 1W/1m
into the nominal impedance, i.e. 2.83V/8Ω, 4V/16Ω. 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 speaker mounted flush
against a steel ring for minimum diffraction | Carver PM-120 amplifier | 2700ft3
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
obtained with APT50 high frequency driver attached.
|
