CROWN / 135MA High Impedance Power Amplifier

This is a high-impedance power amplifier from CROWN. It's easy to operate and offers excellent value for money.

■ High-Impedance Power Amplifier

■ 35W

■ 3.7kg

■ Features

Equipped with most of the functions necessary for a small-scale commercial space broadcasting system. High-quality in-store broadcasting can be achieved simply by connecting input devices and speakers. Furthermore, its ease of operation and excellent cost performance make it easy to introduce the superior sound quality of CROWN power amplifiers.

■ Equipped with most of the functions necessary for a small-scale commercial space broadcasting system

・The 135MA has a 3-channel mixer, and the 160MA has a 4-channel mixer. Channel 1 offers 15V phantom power supply in addition to microphone/line level switching, and is compatible with condenser microphones. The other channels are line inputs, convenient for inputting CD players, etc.

・Features a ducking function that reduces the volume of other channels when a signal is input to channel 1, and smoothly returns to the original volume when the signal ends. Signals other than channel 1 can also be muted manually using external contacts such as switches.

・The 135MA has a 35W amplifier output, and the 160MA has a 60W amplifier output. The speaker connection supports both low and high impedance, allowing for efficient driving of multiple speakers with a single unit. It also features tone control for adjusting the output signal quality and a preamplifier output terminal for connecting to other power amplifiers or recording equipment.

■ Easy Operation Even for Staff Unfamiliar with Audio Equipment

? Only functions used in actual operation, such as input/output level control knobs and the power switch, are placed on the front panel to prevent accidental operation. The knobs are click-type, making it easy to revert settings after changes.

? Each channel has an indicator to detect the input signal, and the amplifier output has both an input signal indicator and a clipping detection indicator, allowing for quick confirmation of the signal status even in dark environments.

■ Excellent Installation Options

? Employs a natural air-cooling system with extremely low operating noise. Suitable for use in quiet spaces.

? Its compact body allows for installation in small spaces under the cash register, and with optional rack-mount brackets, one or two 135MA or 160MA units can be mounted in an EIA 2U space.




■Input

Number of Channels: 3

Terminal Type:

ch1: Euroblock (Balanced)

ch2-3: RCA (Unbalanced)

Impedance: Euroblock (Microphone): 2.2kΩ, Euroblock (Line): 10kΩ, RCA: 10kΩ

Input Sensitivity

ch1 Microphone: 3mV

ch1 Line: 800mV

ch2-ch3: 400mV

Phantom Power: 15V (ch1 only)

■Power Amplifier Output

Number of Channels: 1

Channel Output:

8Ω: 35W

70/100V: 35W

Terminal: Screw-type

■Frequency Response (50Hz-20kHz, 8Ω): ±1dB

■S/N Ratio

ch1 Microphone: 58dB or higher,

ch1 Line: 60dB or higher,

Channels 2-3: 78dB or higher

■THD+N: 0.5% or less (@1kHz)

■Indicators: Signal (Input/Output), Clip (Output), Power

■Power Supply: AC100V, 50/60Hz

■Power Consumption (1/8 Output, Pink Noise, 8Ω): 36W

■Dimensions (W×H×D): 210×90×277mm (excluding protrusions)

■Weight: 3.7kg

■Accessories

3-pin Euroblock connector (for preamp output terminal) ×1,

4-pin Euroblock connector (for telephone output terminal) ×1,

5-pin Euroblock connector (for microphone/line input terminal) ×1,

Power cord, Japanese instruction manual