Instruction/ maintenance manual of the product SRA-120 Ashly
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ASHL Y AUDIO INC. 847 Holt Road W ebster , NY 14580-9103 Phone: (716) 872-0010 T oll-Free: (800) 828-6308 Fax: (716) 872-0739 Internet: http://www .ashly .com/ SRA-120 Power Amplifier Operating Manual SRA-120 SRA-120 Si g. Cli p SRA-12 0 Stereo Power Amplifier Prot ect Si g.
Operating Manual - SRA-120 Power Amplifier 2 T abl e Of Contents 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 UNP ACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Operating Manual - SRA-120 Power Amplifier 9 DESIGN THEOR Y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 10 TROUBLESHOOTING TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Manual - SRA-120 Power Amplifier 4 1. INTRODUCTION Congratulations on your purchase of the Ashly SRA-120 professional stereo power amplifier .
5 Operating Manual - SRA-120 Power Amplifier 4.2 Output Cables The wire gauge used for speaker cables is impor- tant, in that inadequate wire gauge adds significant re- sistance to the speaker ’ s own impedance, reducing the power which is actually delivered to the speaker .
Operating Manual - SRA-120 Power Amplifier 6 Sig. C li p Prot ect Sig. C li p Stere o Hea dph ones Channe l 1 (Mono) Ch ann el 2 Level (dB) Level (dB) - 0 -1 -3 -6 -10 -20 - 0 -1 -3 -6 -10 -20 SRA-120 St ereo Po wer Am p l ifier 6.
7 Operating Manual - SRA-120 Power Amplifier SRA-1 20 Po w er Channel 2 Prot ect 7. REAR P ANEL FEA TURES 7. 1 Inputs The input of the SRA-120 amplifier is equipped with balanced 1/4" tip-ring-sleeve (TRS) phone jacks and balanced screw-terminal inputs.
Operating Manual - SRA-120 Power Amplifier 8 In situations where the power amp and its signal source are separated by great distances, a ground voltage dif ference may exist between the amp’ s chassis ground and the input cable’ s ground.
9 Operating Manual - SRA-120 Power Amplifier 8.2 Stereo Playback Monitoring System Here the SRA-120 is fed from a low line-level (-10dBu) stereo tape machine or CD player .
Operating Manual - SRA-120 Power Amplifier 10 9 . DESIGN THEOR Y Ashly engineers set out to design a single rack space stereo power amplifier delivering a minimum of 120 watts total with the sonic excellence, mechanical rug- gedness and unsurpassed reliability Ashly amps are known for .
11 Operating Manual - SRA-120 Power Amplifier • Signal present indicators active but clip LED is not: Applied input signal is distorted befor e it gets to the amp. Check to see if a piece of equipment in the signal chain befor e the amp is clipping.
Operating Manual - SRA-120 Power Amplifier 12 12. SPECIFICA TIONS 12.1 Output Power: Maximum A verage Power , 0.1% THD, 1KHz RMS W atts Per Channel, Both Channels Driven 8 ohms: 40 W 4 ohms: 60W Bridged Mono Mode: 8 ohms: 120W FTC Continuous Power , 0.
13 Operating Manual - SRA-120 Power Amplifier 14. SCHEMA TICS: Figur e 15.1: SRA-120 Block Diagram and Wiring Diagram..
Operating Manual - SRA-120 Power Amplifier 14 Figur e 15.2: SRA-120 Channel One Schematic Diagram..
15 Operating Manual - SRA-120 Power Amplifier Figur e 15.3: SRA-120 Channel T wo Schematic Diagram..
Printed in USA 4/97 SRA Rev 3 Operating Manual - SRA-120 Power Amplifier ASHL Y AUDIO INC. 847 Holt Road W ebster , NY 14580-9103 Phone: (716) 872-0010 Fax: (716) 872-0739 T oll Free (800) 828-6308 Internet: http://www .ashly .com 1997 by Ashly Audio Corporation.
An important point after buying a device Ashly SRA-120 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Ashly SRA-120 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Ashly SRA-120 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Ashly SRA-120 you will learn all the available features of the product, as well as information on its operation. The information that you get Ashly SRA-120 will certainly help you make a decision on the purchase.
If you already are a holder of Ashly SRA-120, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Ashly SRA-120.
However, one of the most important roles played by the user manual is to help in solving problems with Ashly SRA-120. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Ashly SRA-120 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center