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CROWN 135MA  เพาเวอร์มิกเซอร์ เครื่องขยายเสียง ระบบเครื่องเสียง ประกาศ สาธารณะ Mixer Amplifier Commercial Audio 4 Input 35W 8Ohm & 70V/100V

The Crown® 135MA and 160MA are high value mixer-amplifiers for commercial audio.

They provide 8-ohm and constant-voltage outputs (70V and 100V).

Typical uses are paging, background music, and music-on-hold.

The 135MA provides 3 inputs (each with a volume control) and a 35W amplifier output.

Other features include priority muting, voice activated muting, phantom power, and Bass and Treble controls.

Features :

• 3 inputs (each with a volume control), and one 35W amplifier output channel in 135MA
• Ideal for paging, background music, and music-on-hold
• Balanced Phoenix-type mic/line input, telephone output, dual RCA stereo music inputs, screw-terminal speaker outputs
• Priority muting by VOX or external switch
• Bass and Treble controls on master output
• Three-Year, No-Fault, Fully Transferable Warranty completely protects your investment and guarantees its specifications

Specifications :

Performance

Frequency Response (at 1 watt from line out) : 

• 50 Hz to 20 kHz ± 1 dB.
• 19 Hz to 34 kHz +0, –3 dB.

Signal to Noise Ratio (ref. to rated power, master volume at minimum) : 

• Mic: > 58 dB.
• Line: > 60 dB.
• Telephone: > 60 dB.
• Inputs 2 or 3 (and 4 in 160MA): > 78 dB.
• THD + N: < 0.5% at rated power at 1 kHz. 
• < 0.1% at 5W at 1 kHz.

Input Sensitivity (for full output at maximum gain) :

• Input 1: Mic 3mV, Line 800mV.
• Input 2: 400mV.
• Input 3: 400mV.

Input Impedance (nominal) : 

• Mic: 2.2 kilohms.
• Line: 10 kilohms.
• RCA: 10 kilohms.

Crosstalk : 

• 82 dB at 1kHz (Ch. 1 line input 0.8V, Ch. 1 volume at minimum, other channel volumes at maximum).

Line Output Level (nominal) :

• 1V into 10 kilohms.

Phantom Power :

• 15 VDC.

AC Line Voltages Available : 

• Universal Power Supply. Line voltage tolerance +15%, –20%.

Operating Temperature/Humidity :

• 0° C to 40° C at 95% relative humidity (non-condensing). 

Storage Temperature :

• –20° C to 85° C.