4" 30W Coaxial Speaker with Shallow Mount 70V Transformer and Grille

The Lowell Model WB4-4A30-T870S is a high-performance coaxial speaker designed for efficient sound distribution in large areas. With a 4-inch driver and a 70V transformer, this speaker is engineered to deliver wide-angle sound coverage, ensuring that audio is evenly distributed across a space. The speaker's design allows for a uniform frequency response, making it ideal for various applications where clear audibility is essential.

This speaker features a coaxial configuration that includes both high and low frequency transducers, providing a rich sound experience. The built-in crossover network effectively divides frequencies between the drivers, allowing for a seamless audio experience. With a dispersion angle of 135 degrees at 2kHz, the WB4-4A30-T870S is capable of covering large areas with minimal units, making it a cost-effective solution for sound reinforcement.

Key Features:

• 4" coaxial driver with 135-degree dispersion
• Rated power handling: 30W (EIA 426B)
• Frequency response: 70Hz-20kHz (+6dB), 50Hz-20kHz (+8.8dB)
• Average sensitivity: 88.0dB (SPL at 1W/1M)
• Transformer with primary taps at 1W, 2W, 4W, 8W
• Built-in crossover frequency: 5kHz
• Low frequency voice coil: 1" dia. with ferrite magnet (10oz)
• High frequency voice coil: 0.53" dia. with Neodymium magnet (0.06oz)
• Frame made of 20-ga. steel with 5" overall diameter
• Grille diameter: 7.25" with white powder epoxy finish

Technical Specifications:

Driver Diameter: 4"
Power Handling: 30W
Frequency Response: 70Hz-20kHz (+6dB), 50Hz-20kHz (+8.8dB)
Dispersion Angle: 135 degrees @ 2000Hz (-6dB)
Average Sensitivity: 88.0dB (SPL at 1W/1M)
Voice Coil Impedance: 8 ohms
Transformer Frequency Response: 50Hz-15kHz (+1dB)

Package Contents:

• 1 x 4" Coaxial Driver
• 1 x 70V Transformer
• 1 x Punched Steel Grille