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MULTI-CHANNEL
S–1500
AMPLIFIER
Owner’s Reference
INSTRUCTIONS FOR USE
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S–1500 Multi-channel Amplifier Instructions for Use v 07.0 CONTACT Krell Industries, Inc. INFORMATION 45 Connair Road Orange, CT 06477-3650 USA TEL 203-298-4000 FAX 203-891-2028 E-MAIL krell@krellonline.com WEBSITE http://www.krellonline.com IMPORTANT SAFETY INSTRUCTIONS 1. Read Instructions. This product complies with the 2. Keep these Instructions. EMC directive (89/336/EEC) 3. Heed all Warnings. and the low-voltage directive 4. Follow all Instructions. (73/23/EEC). 5. Do not use this a
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Contents Page INTRODUCTION 5 DEFINITION OF TERMS 6 UNPACKING 7 PLACEMENT 8 AC Power Guidelines FRONT PANEL DESCRIPTION 10 BACK PANEL DESCRIPTION 11 CONNECTING THE S–1500 AMPLIFIER TO YOUR SYSTEM 13 Input and Output Connections OPERATING THE S–1500 AMPLIFIER 15 On/Off and Operation TROUBLESHOOTING SYSTEM NOISE 16 QUESTIONS AND ANSWERS 17 WARRANTY 18 RETURN AUTHORIZATION PROCEDURE 20 SPECIFICATIONS 21 Krell S–1500 Multi-channel Amplifier 3
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Illustrations Page FIGURE 1 The S–1500 Multi-channel Amplifier Front Panel 9 FIGURE 2 The S–1500 Multi-channel Amplifier Back Panel 9 4 Krell S–1500 Multi-channel Amplifier
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Introduction Thank you for your purchase of a Krell S–1500 Multi-channel Amplifier. The S–1500 amplifier is a flexible design that delivers five, six, or seven channels of amplification. All three configurations include input and output connections for all seven channels. The amplifiers differ only by how many channels are housed within the amplifier. The S–1500 / 5 includes five amplifier channels, the S–1500 / 6 includes six amplifier channels, and the S–1500 / 7 includes seven amplifier cha
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Definition of Terms Following are the definitions of key terms used in this owner’s ref- erence. Balanced INPUT AND OUTPUT A symmetrical input or output circuit that has equal impedance CONNECTIONS from both input terminals to a common ground reference point. The industry standard for professional and sound recording instal- lations, balanced connections have 6 dB more gain than single- ended connections, and allow the use of long interconnect cables. Balanced connections are less susceptible th
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Unpacking 1. Open the shipping box, and remove the top layer of foam. The following items are visible: 1 S–1500 Multi-channel Amplifier 1 Accessory Kit containing: 1 AC power cord 1 12 VDC output (12 V trigger) cable 1 12A 1/4-inch slow-blow fuse for 100–120 VAC 1 6A 1/4-inch slow-blow fuse for 220–240 VAC 1 Packet containing the owner’s reference manual and the warranty registration card. IMPORTANT Two people are needed to remove the amplifier from the shipping box. 2. Grasp the underside of
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Placement Before you integrate the S–1500 Multi-channel Amplifier into your system, review the following guidelines to choose the location for the component. This will facilitate a clean, trouble-free installation. The S–1500 amplifier requires at least two inches (5 cm) of clear- ance on each side, and at least two inches (5 cm) of clearance above and below the component to provide adequate ventilation. The S–1500 amplifier does not require any type of special rack or cabinet for installation.
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Figure 1 The S–1500 Multi-channel Amplifier Front Panel POWER 12 Power 1 Power Button 2 Stand-by and Power LED Figure 2 The S–1500 Multi-channel Amplifier Back Panel 3 4 6 7 INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6 INPUT 7 12VDC OUT IN 30mA MAX. 50/60 Hz KRELL INDUSTRIES, INC. OUTPUT 1 OUTPUT 2 OUTPUT3OUTPUT 4 OUTPUT 5 OUTPUT 6 OUTPUT 7 45 CONNAIR ROAD ORANGE, CT 06477-3650 USA NO USER SERVICEABLE PARTS INSIDE MADE IN USA 5 89 Remote Connections Balanced Inputs 6 12 VDC Remote Power Out 3
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Front Panel Description See Figure 1 on page 9 The S–1500 Multi-channel Amplifier front panel provides power on and indicates operating status. 1 Power Button Use this button to switch the S–1500 amplifier power between the stand-by and the operational modes and also to switch the 12 VDC output (12 V trigger) on and off. 2 Stand-by and Power LED When the AC power cord is plugged into the wall, the LED illumi- nates in red, indicating that the component is in the stand-by mode. When the power but
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Back Panel Description See Figure 2 on page 9 The S–1500 Multi-channel Amplifier back panel provides connec- tions for all inputs and outputs, remote connection input and out- put links, and the AC power supply. BALANCED INPUTS 3 Inputs 1-7 The S–1500 amplifier has seven channel inputs for output devices with balanced XLR connectors. SINGLE-ENDED 4 Inputs 1-7 INPUTS The S–1500 amplifier has seven channel inputs for output devices with single-ended RCA connectors. Use only one input to each ampl
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Back Panel Description, continued BACK PANEL REMOTE 7 12 VDC Remote Power In CONNECTIONS, The S–1500 amplifier is equipped with an input that receives continued 12 VDC power on/off (12 V trigger) signals from other Krell compo- nents and other devices that incorporate a 12 V trigger. This allows you to turn the S–1500 on and off using a Krell or other component in a custom installation. Note Consult the owner’s manual of each component used in a custom instal- lation to take full advantage of th
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Connecting the S–1500 Amplifier to Your System INPUT AND OUTPUT The S–1500 Multi-channel Amplifier is equipped with balanced CONNECTIONS and single-ended inputs. Krell recommends using balanced interconnect cables. Balanced interconnect cables not only minimize sonic loss, but are also immune to induced noise, especially with installations using long cables. Balanced connections have 6 dB more gain than single- ended connections. When level matching is critical, please keep this gain value in m
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Connecting the S–1500 Amplifier, continued INPUT AND OUTPUT 4. Connect the loudspeaker cables to the S–1500 amplifier chan- CONNECTIONS, nel output binding posts (5) located on the back panel. continued The S–1500 / 5 uses only outputs 1-5, and has caps on the loudspeaker binding posts of channels 6 and 7. The S–1500 / 6 uses outputs 1-6, and has caps on the loudspeaker binding posts of channel 7. The binding post terminals accept spade lugs, bare wire, or pins. Use the red terminal for the p
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Operating the S–1500 Amplifier ON/OFF AND When powering up your system, turn the amplifiers on last. When OPERATION powering down your system, turn amplifiers off first. The proce- dures for operating the S–1500 Multi-channel Amplifier follow. 1. Plug the AC power cord into the amplifier’s IEC connector (8). 2. Plug the other end of the AC power cord into the AC wall outlet. 3. The LED (2) illuminates red to indicate it is in stand-by mode. When the amplifier is first plugged in, there is a
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Troubleshooting System Noise When you mix and match high-performance audio components, each with its own ground potential, a low frequency hum may occur in one or all loudspeakers. If this happens when you place the S–1500 Multi-channel Amplifier into your system, follow these simple troubleshooting steps: 1. Check that all input and output connections are of sound construction. 2. With the amplifier off, remove all the interconnect cables, then turn the amplifier on. If the hum disappears, tu
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Questions and Answers Q. Should I turn the S–1500 amplifier off (unplug the amplifier) when not playing music? A. No. Leave the S–1500 amplifier in the stand-by mode when not playing music. The stand-by mode avoids cold starts as well as minimizes heat output and power consumption. Turn the amplifier off if you plan to be away for a period of time, for example, on vacation. See Operating the S–1500 Amplifier, on page 15. Q. When I turn the amplifier on there is a loud hum through the loudspeaker
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Warranty Krell products have a limited warranty. Amplifiers, preamplifiers, preamp/ To register your product for processors, and receivers carry a limited warranty of five years for parts warranty benefits, please and labor on circuitry. Loudspeakers carry a limited warranty of five complete and return the years for parts and labor. CD and DVD players carry a limited warranty Warranty Registration Card of five years for parts and labor on circuitry, and three years for parts enclosed in the ship
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Warranty, continued Freight to the factory is your responsibility. Return freight within the United States (U.S.A.) is included in the warranty. If you have purchased your Krell product outside the U.S.A. and wish to have it serviced at the factory, all freight and associated charges to the factory are your responsibility. Krell will pay return freight to the U.S.A.-based freight for- warder of your choice. Freight and other charges to ship the product from the freight forwarder to you are also
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Return Authorization Procedure HOW TO EXPEDITE If you believe there is a problem with your component, please con- SERVICE tact your dealer, distributor, or the Krell factory to discuss the prob- lem before you return the component for repair. To expedite service, you may wish to complete and e-mail the Service Request Form in the Service section of our website. ACCESSING THE Simply click on the Service Request Form in the navigation tier on SERVICE REQUEST the Krell home page at http://www.krel
