Ashly SRA-Series manual SRA Series, Protection

Page - 4 Operator Manual – SRA Series Amplifiers

Important Safety

Instructions – 2

Introduction - 3

The SRA Series - 4

Protection

Physical Description - 5

Installation - 6

Operation - 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 11

Warranty - 12

The SRA Series

SRA-Series amplifiers are high-efficiency, lightweight amplifiers incorporating the latest amplifier technologies.

The series provides a power range of 75 to 150 watts per channel at 4 ohms (20Hz-20kHz, 1% THD). The SRA series is available in 2 and 4 channel versions at two power points. All models will drive 4 or 8 ohm loads. All models are 1RU, with the two and four channel versions weighing 9 pounds and 10 pounds respectively. All SRA amplifiers utilize a state- of-the-art, efficient, high speed switched mode power supply and offer remote power on/off among the many standard features.

SRA-Series Power Ratings (per channel)

	Stereo		Mono Bridged
Model	8	4	8
SRA-2075	40 W	75 W	150 W
SRA-4075	40 W	75 W	150 W
SRA-2150	80 W	150 W	300 W
SRA-4150	80 W	150 W	300 W

•Input connections are via 3-pin Euroblock connectors.

•Output connectors are screw terminal strips.

•Rear panel switches include: selectable High Pass Filters, Gain and Operation Mode.

Protection

SRA-Series Amplifiers come standard with several protection circuits:

Output over-current protection - The output current is limited to safe levels regardless of load.

DC output protection - The amplifier is switched off if more than 2 volts of dc is present on the output. The amplifier will automatically restart after 5 seconds (if no fault remains). The protect LED is lit as well as the clip LED of the affected channel(s).

Main supply rail overvoltage protection - The amplifier is switched off if the main supply rails have too high of a voltage. The amplifier will automatically restart after 5 seconds (if no fault remains). The protect LED is lit as well as the clip LED of the affected channel(s).

Chassis internal temperature monitoring - The amplifier is switched off when the internal ambient temp reaches 70º C. The amplifier will again switch on when the internal ambient temp reaches 55º C. The protect LED is lit as well as the clip LED of ALL channels.

Inrush limiting - The turn-on current is limited. This is active during initial startup as well as when exiting standby mode.

Mains fuse - There is a 5 amp time delay fuse.

Copyright© 2006 – Ashly Audio Inc.