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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 warranty. 

2.  If the amplifier does not come on following the procedure above, 

please contact your dealer. 

3. 

There is a circuit breaker on the amplifier real panel. This breaker 
protects the amplifier in the event of catastrophic failure. If the 
circuit breaker engages, contact your dealer or the Krell Service 
Department. Do not attempt to reset the circuit breaker.

 

 
 
 

G.  WARRANTY AND SERVICE INFORMATION 

 

There are no fuses or user-serviceable parts in the KSA-150 or KSA-250. Both 
amplifiers have a limited warranty of five years from the date of purchase for 
parts and labor. Return freight is included in the warranty. Please return the 
warranty car immediately after successful installation and operation are 
completed. 
 
The warranty for Krell products is valid only in the country to which they were 
shipped and at the Krell factory in Orange, Connecticut, USA. If there are 
problems with any of your Krell products, please contact your authorized Krell 
dealer or the Krell Service Department. 
 
Please do not return any unit to Krell without first having contacted the Krell 
Service Department and receiving a Return Authorization Number. Units should 
be shipped in Krell packing. Packing materials may be purchased through the 
Krell Service Department. Freight charges to the factory or distributor are the 
responsibility of the customer. Krell or the dealer/distributor will pay return freight 
charges on warranty repairs.  
 
 
 
 
 

 

 

Summary of Contents for Power Amplifier KSA 150 / 250

Page 1: ...d installation are crucial Your thorough understanding of the operation and interrelation of your new amplifier with your audio system will ensure its maximum performance and long life ABOUT THE OWNER S MANUAL The Owner s Manual is divided into various groups of information The purpose of the manual is to familiarize you with the product and guide you through its set up installation and operation ...

Page 2: ...ated at 150 and 250 watts per channel into 8 ohms respectively The 150 will actually generate 220 watts into 8 ohms and the 250 will generate 320 watts into 8 ohms The 8 ohm power ratings do not account for the amplifiers superb sonic performance nor describe their maximum power The Krell definition of power and the ability to drive low impedances is that the output must double into successively l...

Page 3: ...ment that relates to amplifiers is that every unit be capable of doubling its output into successively lower impedances The KSA 150 will deliver 300 watts per channel into 4 ohms 600 watts per channel into 2 ohms and 1 200 watts per channel into 1 ohm The KSA 150 is fully capable of driving impedances below 1 ohm The KSA 250 will deliver 500 watts per channel into 4 ohms 1 000 watts per channel in...

Page 4: ...ed on shelving or in a cabinet extra ventilation is necessary This can be accomplished with the use of whisper type fans in a variety of ways Consult your dealer for assistance Generally with the front and rear of the installation shelving or cabinetry open 8 inches of clearance on the sides and top of the amplifies should provide adequate ventilation The dimensions of the KSA 150 are 19 wide X 16...

Page 5: ...g the cable thereby reducing the maximum power that can be delivered to the speakers The feet on the KSA 150 or KSA 250 can be used three different ways They are made from machined Delrin and are supplied with separate rubber bottoms and mounting screws The rubber bottom can be screwed into the Delrin for the protection of fragile surfaces such as hardwood floors or furniture For use on rugs or ca...

Page 6: ...he speakers to their limit Always turn the volume level down at the first sign of distortion When turning off the system the amplifier should always be first This avoids the possibility of a turn off transient occurrence from some other component to the speakers F PROTECTION CIRCUITRY The KSA 150 and KSA 250 have a sophisticated series of circuits that protect them from dangerous input signals or ...

Page 7: ...fiers have a limited warranty of five years from the date of purchase for parts and labor Return freight is included in the warranty Please return the warranty car immediately after successful installation and operation are completed The warranty for Krell products is valid only in the country to which they were shipped and at the Krell factory in Orange Connecticut USA If there are problems with ...

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