Key Features
- Extremely Versatile
- Full Range, Midbass or Midrange
- 8 Ohm Nominal Impedance
- 110 Watt Max Power Rating
- 105 Hz - 12 kHz Frequency Range
Description
Pair of 4" Full-Range, 8 Ohm Speaker Drivers
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.
Features:
- Perfect driver for high output line array use
- Flat response from 105 to 12,000 Hz
- Cosmetic mounting flange for a clean look without flush mounting
- Naturally damped paper cone minimizes resonances
- Midbass | Midrange Line Array | Pro Audio | Car Audio
- Box Type: Sealed | Vented
Specifications:
- SPECIFICATION
- Nominal Basket Diameter: 4", 102 mm
- Nominal Impedance*: 8 ohms
- Power Rating*
- Program Power: 110 W
- Watts: 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 ohms
- 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
- MOUNTING INFORMATION
- 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