EMB ESM1 400W Max Power Compression Tweeter WORKS FOR JBL, Peavey, Cerwin Vega, Gemini, etc EMB ESM1 400W Max Power Compression Tweeter WORKS FOR JBL, Peavey, Cerwin Vega, Gemini, EMB, BMB, Pyle-Pro, Mr.DJ & MANY BRANDS! Max Power: 400 Watts Single Voice Coil 1-3/8" Mounting Screw Impedance: 8 Ohm. Frequency: 1.5k-20kHz