Цена: 3 474 руб.
Eminence ALPHA 4-8 ШП-динамик 4", 55W(RMS),110W(PROG), 8 Ohm., 105 Hz-12 kHz, 88 dB(1W/1m), катушка 1".
ALPHA 4-8 (PAIR)
Perfectly suited for line arrays, car doors and side panels, and other tight fitting applications, the Alpha 4 is a very versatile 110 watt driver that can be used full range, as a midbass, or as a midrange. They can be stacked by themselves in a column for vocal applications, or in conjunction with a tweeter and a sub for compact, high performance PA or MI applications.
Nominal Basket Diameter 4", 102 mm
Nominal Impedance* 8 Ohm;
Program Power 110 W
Nominal Power 55 W
Resonance 123 Hz
Usable Frequency Range 105 Hz - 12 kHz
Sensitivity* 88 dB
Magnet Weight 10 oz.
Gap Height 0.14", 3.7 mm
Voice Coil Diameter 1", 25 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 123 Hz
DC Resistance (Re) 6.73 Ohm;
Coil Inductance (Le) 0.28m H
Mechanical Q (Qms) 6.83
Electromagnetic Q (Qes) 0.84
Total Q (Qts) 0.75
Compliance Equivalent Volume (Vas) 1.94 liters / 0.07 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 15 cc
Mechanical Compliance of Suspension (Cms) 0.42 mm/N
BL Product (BL) 4.94 T-M
Diaphragm Mass Inc. Airload (MMs) 4 grams
Efficiency Bandwidth Product (EBP) 146
Maximum Linear Excursion (Xmax) 2.6 mm
Surface Area of Cone (Sd) 57.7 cm2
Maximum Mechanical Limit (Xlim) 4.5 mm
Recommended Enclosure Volume
Sealed 1.87-8.5 liters / 0.07-0.3 cu.ft.
Vented 2.27-4.25 liters / 0.08-0.15 cu.ft.
Driver Volume Displaced 0.012 cu.ft. / 0.33 liters
Overall Diameter 4.57", 116.1 mm
Baffle Hole Diameter 3.77", 95.8 mm
Front Sealing Gasket Yes
Rear Sealing Gasket Yes
Mounting Holes Diameter 0.15", 3.8mm
Mounting Holes B.C.D. 4.25", 108mm
Depth 2.31", 58.7 mm
Net Weight 1.5 lbs, 0.68 kg
Shipping Weight 1.9 lbs, 0.86 kgs
MATERIALS OF CONSTRUCTION
Coil Construction Copper voice coil
Coil Former Polyimide former
Magnet Composition Ferrite magnet
Core Details Non-Vented core
Basket Materials Pressed steel basket
Cone Composition Paper cone
Cone Edge Composition Cloth cone edge
Dust Cap Composition Solid composition paper dust cap
Multiple units exceed published ratings evaluated under EIA 426A specification while tested in a free-air, non-temperature-controlled environment. Multiple compression drivers exceeded published ratings evaluated under EIA-426A or AES specification while mounted on Eminence’s H290, H290S, or H2EA horn in a non-temperature-controlled environment.
The average output across the usable frequency range when applying 1W/1m into the nominal impedance. i.e: 2.83V/8 Ohm;, 4V/16 Ohm;. 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 | 2 ft. x 2 ft. baffle is built into the wall with the speaker mounted flush against a steel ring for minimum diffraction | Yamaha P3500S amplifier | 2700 cu. ft. chamber with fiberglass on all six surfaces (three with custom-made wedges). Compression drivers were tested using a 2ft x 2ft baffle built into the wall with horn front mounted.
Цена Eminence ALPHA 4-8 указана за пару.