Speaker Horn with Amplifier These can be used for indoor and outdoor PA outside car audio marine applications and phone systems. Speaker Horn specs: Indoor / Outdoor Use UV Protected Power Handling: 50W RMS - 100W Max Frequency Response: 350Hz - 9Khz Output: 110dB Nominal Impedance: 8 Ohms Magnet Weight: 11.6 Oz. Dispersion: 90° x 20° (2Khz) Dimensions: 11 x 6.5 Amplifier specs: USB SD card input FM Stereo radio Bluetooth MP3 audio format play External audio input GH-Power BTL output DC 12V input FM frequency range: 87.5MHz-108. OMHz Frequency response: 20Hz-20kHz Output power: RMS 20W+20W 1KHz Harmonic distortion: <0. 05% 4W 1KHz SNR: 85dB High control: 12dB ± 10KHz Bass control: 12dB ± 100H The signal level: 220MV 47K Two main channel output. Use it in your car your boat your RV your golf cart your home — anywhere you need a great amplifier with low distortion and acoustically accurate reproduction of sound.