Ashly SRA-4150 - Manual

SRA-Series, 4-Channel Amplifiers

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

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

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

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

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

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

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

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

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

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

shall be convection cooled.

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

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

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

(20Hz to 20KHz unweighted).

Each amplifier channel shall be supplied with an attenuator locat-

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

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.

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

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

nal present and clip.

The amplifier shall have built in protection for Output Over-

Current, DC Output, Main Supply Rail Overvoltage, Chassis

Internal Temperature, Inrush Limiting and Mains Fuse.

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

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

Additionally, the amplifier shall have user selectable Delay

Switches to provide incremental turn-on delay when the Standby

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

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

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

compliance with FCC, CE and RoHS regulations.

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

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

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

New York.

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

Technical Notes & Specifications

SRA-Series 4075 and 4150 Four-Channel Amplifiers

Architects Specifications