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INTRODUCTION 1
DEFINITION OF TERMS 1
REVOLUTIONARY KRELL CAST and CAST II TECHNOLOGY 3
UNPACKING 4
PLACEMENT 4
AC Power Guidelines 5
FRONT PANEL DESCRIPTION 8
700cx, 400cx, and 300cx Stereo Power Amplifiers 8
750Mcx, 450Mcx, and 350Mcx Monaural Power Amplifiers 8
BACK PANEL DESCRIPTION 11
700cx, 400cx, and 300cx Stereo Power Amplifiers 11
750Mcx, 450Mcx, and 350Mcx Monaural Power Amplifiers 12
CONNECTING THE FULL POWER BALANCED AMPLIFIER
TO YOUR SYSTEM 13
Input and Output Connections 13
Krell Link Connections 13
DC Protection Circuitry 14
Using a Tube Preamplifier 14
AMPLIFIER OPERATION 15
On/Off and Stand-by Operation 15
Krell Link Operation 15
REMOTE CONTROL OPERATION 16
How to Turn Off the Amplifier LEDs 16
How to Turn On the Amplifier LEDs 16
How to Switch between Krell CAST and XLR Inputs 16
Using a Dedicated Wall Outlet and Switch 16
AMPLIFIER TROUBLESHOOTING 17
How to Troubleshoot System Noise 17
How to Evaluate Amplifier Operation 17
QUESTIONS AND ANSWERS 19
WARRANTY 20
RETURN AUTHORIZATION PROCEDURE 21
SPECIFICATIONS 22
Krell Full Power Balanced X Series Power Amplifiers iii
Contents