SRA-Series 4075 and 4150 Four-Channel Amplifiers

Technical Notes & Specifications

 

 

Architects Specifications

SRA-Series, 4-Channel Amplifiers

The amplifiers shall have front panel indicators for power, stand-

 

by and protect. Each channel shall have signal indicators for sig-

The power amplifiers shall consist of two separate models (4075,

nal present and clip.

4150), being of four channels, and shall deliver a minimum

 

power of 40 or 80 watts RMS per channel into 8 ohm loads and

The amplifier shall have built in protection for Output Over-

75 or 150 watts RMS per channel into 4 ohms depending on the

Current, DC Output, Main Supply Rail Overvoltage, Chassis

model being used. When switched into Bridged-Mono mode, the

Internal Temperature, Inrush Limiting and Mains Fuse.

amplifier in use shall deliver 150 or 300 watts RMS into 8 ohms.

The amplifer shall have a 2-pin Standby Connector to provide

 

Dimensions of the amplifiers shall be 19”W x 1.75”H x 11.0”D,

for remote standby switching with a 0.5 second turn-on delay.

with a weight of 10 pounds. The amplifiers shall utilize a state-of-

Additionally, the amplifier shall have user selectable Delay

the-art, efficient, switched mode power supply. The power supply

Switches to provide incremental turn-on delay when the Standby

shall operate at either 120 or 240VAC, 50/60Hz. The amplifier

connector is used. The switches shall be additive, providing as

shall be convection cooled.

much as 7.5 seconds of delay to the 0.5 second Standby delay.

The amplifier shall have a selectable input gain of 26dB or 36dB.

The amplifier shall have a cTUVus safety listing and shall be in

Frequency response shall be 20 Hz - 20 kHz, +/- 1.0 dB. Hum

compliance with FCC, CE and RoHS regulations.

and noise shall be greater than 98dB or 105dB below full output

 

(20Hz to 20KHz unweighted).

The amplifier shall be covered under a full limited warranty of not

 

less than five years. The amplifier shall be an SRA-Series two-

Each amplifier channel shall be supplied with an attenuator locat-

channel model, manufactured by Ashly Audio, Inc. of Rochester,

ed on the front panel. Each input pair shall have a selectable,

New York.

bypassable high pass filter of 12dB/octave at 80Hz, a switch to

 

select stereo or mono mode and a switch to select dual or bridge

 

mode.

 

The inputs shall be active balanced design, with an impedance

 

of 20K ohm with a maximum input level of +21dBu. Input con-

 

nections shall be 3-pin Euroblock. Output connectors shall be a

 

screw terminal strip with safety cover.

 

 

 

Features

1RU Chassis

High Efficiency Switched Mode Power Supply

Class-D Output Circuitry

4 Independent Channels

Input Attenuators

Input Sensitivity 26dB or 36db

Remote Power Turn-On/Off

Adjustable Turn-on Delay

Convection Cooled

80Hz Switchable High Pass Filter

Signal Present and Clip LEDs

Safety/Compliance: cTUVus/FCC, CE, RoHS

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Ashly SRA-4150, SRA-4075 specifications Technical Notes & Specifications, Architects Specifications

SRA-4075, SRA-4150 specifications

The Ashly SRA-4150 and SRA-4075 are cutting-edge power amplifiers designed for high-performance audio applications. Renowned for their robust construction and exceptional sound quality, these amplifiers are widely used in various settings, from concert venues to corporate events, and even home audio systems.

The SRA-4150 delivers a powerful output of 150 watts per channel into 8 ohms, providing ample power for driving large loudspeakers. Meanwhile, the SRA-4075 offers slightly less power, with 75 watts per channel into 8 ohms. Both models are equipped with advanced amplifier technologies that enhance audio performance and reliability.

A key feature of these amplifiers is their class D amplifier design. This technology contributes to greater efficiency, enabling the amplifiers to produce high output levels while minimizing heat generation. The result is a more stable performance over long periods without the risk of thermal overload. Class D amplifiers are celebrated for their lightweight design, making them easier to transport and install compared to traditional class A/B models.

Both the SRA-4150 and SRA-4075 are built with high-quality components, ensuring long-lasting durability under demanding usage conditions. The rugged chassis provides excellent protection against environmental factors, and their compact size allows for versatile mounting options, whether in rack systems or standalone setups.

Another notable characteristic is the amplifiers' comprehensive connectivity options. Each model features balanced XLR and 1/4" inputs, allowing for compatibility with a wide range of audio sources. Additionally, the outputs are designed with binding posts and speakON connectors, ensuring secure connections to various loudspeakers.

The SRA series also includes built-in protection circuitry, which safeguards the amplifiers from damage due to short circuits, overheating, and overloading. This feature not only prolongs the lifespan of the equipment but also ensures reliable performance during critical audio applications.

In summary, the Ashly SRA-4150 and SRA-4075 amplifiers stand out for their powerful output, lightweight efficiency, and robust construction. Designed for versatility and reliability, these amplifiers are ideal for professionals seeking high-quality audio solutions across a range of environments. With their advanced technologies, these models represent a blend of innovation and practicality in today's competitive audio market.