Haut parleur guitare Eminence PRIVATE JACK™
[PRIVATE JACK-8] Avis/Critiques Namesake of the famous British canine and one of the most recognized British
tones for guitar.
Coloration: Thick and smooth, with lots of
mids and extended highs. Very will balanced speaker. Classic British
flavor.
Genre: Classic British tone for Blues, Indie,
Jazz.
SPECIFICATION
Nominal Basket Diameter 12", 304.8mm
Nominal Impedance* 8
ohms
Power Rating
Watts 50W
Music
Program
Resonance 96Hz
Usable Frequency Range
70Hz-5kHz
Sensitivity*** 101
Magnet Weight 38 oz.
Gap
Height 0.312", 7.92mm
Voice Coil Diameter 1.75", 44.5mm
THIELE & SMALL
PARAMETERS
Resonant Frequency (fs) 96Hz
DC Resistance (Re) 7.01
Coil Inductance (Le) 0.49mH
Mechanical Q (Qms) 18.19
Electromagnetic Q (Qes) 0.72
Total Q (Qts) 0.69
Compliance Equivalent Volume (Vas) 33.7
liters / 1.2 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 64cc
Mechanical Compliance of Suspension (Cms) 0.09mm/N
BL
Product (BL) 13.5 T-M
Diaphram Mass inc. Airload
(Mms) 31 grams
Efficiency Bandwidth Product (EBP)
134
Maximum Linear Excursion (Xmax) 1.2mm
Surface Area of Cone (Sd) 519.5 cm2
Maximum Mechanical
Limit (Xlim)
MOUNTING
INFORMATION
Recommended
Enclosure
Sealed Acceptable
Vented Acceptable
Overall Diameter 12.02",
305.3mm
Baffle Hole Diameter 10.97", 278.6mm
Front Sealing Gasket fitted as standard
Rear Sealing
Gasket fitted as standard
Mounting Holes Diameter
0.25", 6.4mm
Mounting Holes B.C. D. 11.63",
295.4mm
Depth 5.1", 130mm
Net Weight 8
lbs., 3.6 kg
Shipping Weight 9.8 lbs., 4.5 kg
MATERIALS OF
CONSTRUCTION
Coil Construction
Copper voice coil
Coil Former Paper former
Magnet Composition Ferrite magnet
Core Details
Non-vented core
Basket Materials Pressed steel
basket
Cone Composition Paper Cone
Cone Edge Composition Paper cone edge
Dustcap
Composition Zurette 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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