Krell Industries KSA 150 / 250 manual

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Table of contents for the manual

  • Page 1

    1 KRELL, THE LEADER IN AUDIO ENGINNERING KSA – 150 / 250 OWNER’S MANUAL INTRODUCTION Thank you for your purchase of the new Krell KSA - 150 or KSA - 250 Power amplifier. The KSA - 150 and 250 represent the absolute latest evolution in amplifier technology. They have many innovative design features in addition to Krell refined Class A power and [...]

  • Page 2

    2 A. GENERAL INFORMATION The latest generation of high - resolution source c omponents and speakers places new demands on the power amplifier. The Krell KSA 150 and KSA - 250 meet these challenges with fresh design sophistication and long - term value. Both products can drive any speaker with an effortless quality that makes their powe r seem endle[...]

  • Page 3

    3 protective action exists f or a wide range of problematic conditions. Collectively, the protection circuitry is designed to avoid damage caused by other defective components, faulty wiring, mishandling of the system or amplifier failure. Krell is committed to balanced operation in all products. Balanced systems have long been standard in professi[...]

  • Page 4

    4 D. INSTALLATION 1. CAUTIONS: These are important points of which you should always be aware. • Do not connect the power cord into the AC mains before completing the entire installation. • The unit must always be turned off while making connections. • Krell XLR and custom RCA connectors are made to very exacting standards. Connectors of less[...]

  • Page 5

    5 The input that is not connected to the preamplifier may b e used as an output to a second amplifier for power bi - amp applications. Before proceeding with such an installation, you should consult your dealer or Krell. The KSA - 150 and KSA - 250 are shipped with shorting pins in the XLR inputs. These pins must remain in the XLR inputs if the uni[...]

  • Page 6

    6 closing. At this pint the amplifier’s outputs are not connected to the speakers. After the protection circuits detect that the unit has completely stabilized, the speaker relays will engage. Ano ther click will be heard at this point. The amplifier is now ready to use. The amplifier will be at temperature and sound its best after approximately [...]

  • Page 7

    7 IMPORTANT NOTES REGARDING PROTECTION CIRCUITRY 1. When the Output Protection circuitry has been engaged, allow at least 20 seconds before turning on the amplifier again. Repeated fast cycling of the On/Off switch can damage the amplifier and void the warra nty. 2. If the amplifier does not come on following the procedure above, please contact you[...]