The 4'' ST400 tweeter from JBL stands out for its clear and precise reproduction of high frequencies and instruments. Offering you power up to 150W RMS, the ST400 features extremely high sensitivity and low distortion making it an ideal choice for installation in a professional PA system. It can be networked for coverage and SPL in higher power systems. Its base and diffuser are made of aluminum which contributes to improved heat dissipation of the movements of the coil.

Features:

• Nominal Impedance: 8 Ohms
• Minimum impedance @ 9.400 Hz: 7.8 Ohms
• RMS power: 150W RMS
• RMS power with filter: AES (HPF 1,5KHz – 12dB / oit): Active 20W – AES (HPF 2,0KHz – 12dB / oit): Active 20W
• Musical program with filter: (HPF 5,000 Hz – 12dB / oit): Active 20W, Passive 200 W – (HPF 8,000 Hz – 12dB / oit) Active 20W, Passive 300 W
• Sensitivity (2.83V@1m) averaged from 6 to 15 kHz: 111 dB SPL
• Frequency response @ -10 dB: 4,000 to 20,000 Hz
• Acoustic dispersion (H x V): 40 x 40 degrees
• Diaphragm Material: Phenolic
• Coil diameter: 42mm (1.6'')
• Re: 6.2 Ohms
• Flux density: 1.70T