Instruction/ maintenance manual of the product KRC-HR Krell Industries
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Leader in Audio Engineering KRC-HR PREAMPLIFIER OWNER’S REFERENCE.
TABLE OF CONTENTS 2 3 4 5 6 7 8 9 10 11 12 14 15 INTRODUCTION UNPACKING THEATER-THROUGHPUT SETUP BASIC INSTALLATION INPUT/OUTPUT CONNECTIONS REAR PANEL DESCRIPTION BASIC PREAMPLIFIER OPERATION FRONT P.
INTRODUCTION Thank you for your purchase of the KRELL KRC-HR remote control preamplifier. The KRC-HR combines refinements of the original KRC with a radical approach to volume control circuitry.
UNPACKING i. Open the box and remove the top layer of foam. 2. Remove the KRC-HR and the foam tray surrounding it. The following items will now be visible: 1 KRC-HR power supply 1 KRC-HR remote control 1 8 ft.
THEATER-THROUGHPUT SETUP NOTE: If the KRC-HR must be handled after the top cover has been removed, the unit must be held only on the sides of the chassis. Never move the KRC-HR while the top cover is off by holding the front panel. When reinstalling the top cover, insert the four screws into the chassis sides first and lightly tighten them.
BASIC INSTALLATION 1. Place the unit on a firm level surface free from excessive dirt or moisture. The KRC-HR is not particularly hum sensitive, allowing other components to be placed on or around it.
INPUT AND OUTPUT CONNECTIONS CAUTIONS: When making connections to this component or any other, make sure that the power amplifier is OFF. Make sure all cable terminations are of the highest quality, free from frayed ends, shorts or cold solder joints.
REAR PANEL DESCRIPTION INPUTS Four single-ended inputs via standard RCA connectors PH (Line level input if phono board is not installed) S-2 S-3 S-4 Two balanced inputs via standard XLR connectors B-1.
BASIC PREAMPLIFIER OPERATION The KRC-HR has the flexibility of a remote controlled device but does not require special attention in order to perform simple functions. The KRC-HR will function much like. other KRELL preamplifiers. The unit can be operated from the front panel controls or via the remote control.
FRONT PANEL DESCRIPTION INPUT SELECTION PH S-2 S-3 S-4 B-1 B-2 Selects phono input (line level input when phono board not installed) Selects S-2 input Selects S-3 input Selects S-4 input Selects B- 1 .
REMOTE CONTROL 1. When a function button on the remote control is pressed and held, the blue pilot LED will flash on the KRC-HR. When the button is released, the flashing stops. This indicates that the KRC-HR has received a command. 2. The functions of the remote control are identical to the front panel functions.
PROTECTION CIRCUITRY The KRC-HR is the first high-end preamplifier to have protection circuitry at the input and output. The indicators on the KRC-HR, which are described below, will give you a general location of a problem in your audio system.
QUESTIONS AND ANSWERS Q. When I turn up the volume on the KRC-HR, a loud hum is present from the loudspeakers. What could this be? Ao Hum can be caused by several different disturbances. Check to make sure that all of the cables, (in and out of the KRC-HR) are sound and making proper contact.
Q. Why do I have to turn up the volume so high to get music at a normal listening level? Ao If your system does not seem to have enough gain, you are probably not using the balanced input and output capabilities of the KRC-HR. Each balanced termination has 6dB more gain than a single-ended termination.
SPECIFICATIONS GAIN: 6dB or 12dB SIGNAL TO NOISE: 96dB unweighted THD: 1KHz less than .01% 20KHz less than .01% INPUT IMPEDANCE: 47,000 Ohms (47K Ohm) OUTPUT IMPEDANCE: 5 Ohms OUTPUT VOLTAGE: 14 volts R.M.S. DIMENSIONS: Unit: 19.0" Wide 14.5" Deep 2.
WARRANTY AND SERVICE THERE ARE NO USER-SERVICEABLE PARTS INSIDE ANY KRELL PRODUCT. The KRELL KRC-HR has a limited and transferable warranty of five years for parts and labor.
WARRANTY AND SERVICE KRELL is not responsible for any damage to units incurred in transit. If any shipping damages are incurred during transit of your units to the factory, you must initiate filing of the insurance claim. Likewise, KRELL will file claims for shipping damages incurred during transit of your units from the factory to you.
KRELL 45 Connair Road ¯ Orange, CT 06477-3650 USA 203-799-9954 ¯ Fax: 203-799-9796 ©1997 by Krell ® Industries, Inc. All rights reserved. P/N 1960602000023.
An important point after buying a device Krell Industries KRC-HR (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Krell Industries KRC-HR 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 Krell Industries KRC-HR - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Krell Industries KRC-HR you will learn all the available features of the product, as well as information on its operation. The information that you get Krell Industries KRC-HR will certainly help you make a decision on the purchase.
If you already are a holder of Krell Industries KRC-HR, 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 Krell Industries KRC-HR.
However, one of the most important roles played by the user manual is to help in solving problems with Krell Industries KRC-HR. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Krell Industries KRC-HR 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
