S –1500 MULTI-CHANNEL AMPLIFIER Owner’s Reference INSTRUCTIONS FOR USE
S –1500 Multi-channel Amplifier Instructions for Use v 07.0 CONTACT INFORMATION Krell Industries, Inc. 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 This product complies with the EMC directive (89/336/EEC) and the low-voltage directive (73/23/EEC). 1. Read Instructions. 2. Keep these Instructions. 3. Heed all Warnings. 4. Follow all Instructions. 5.
Contents Page Krell S–1500 Multi-channel Amplifier INTRODUCTION 5 DEFINITION OF TERMS 6 UNPACKING 7 PLACEMENT AC Power Guidelines 8 FRONT PANEL DESCRIPTION 10 BACK PANEL DESCRIPTION 11 CONNECTING THE S–1500 AMPLIFIER TO YOUR SYSTEM Input and Output Connections 13 OPERATING THE S–1500 AMPLIFIER On/Off and Operation 15 TROUBLESHOOTING SYSTEM NOISE 16 QUESTIONS AND ANSWERS 17 WARRANTY 18 RETURN AUTHORIZATION PROCEDURE 20 SPECIFICATIONS 21 3
Illustrations Page FIGURE 1 FIGURE 2 4 The S –1500 Multi-channel Amplifier Front Panel 9 The S –1500 Multi-channel Amplifier Back Panel 9 Krell S–1500 Multi-channel Amplifier
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 channels.
Definition of Terms Following are the definitions of key terms used in this owner’s reference. INPUT AND OUTPUT CONNECTIONS Balanced A symmetrical input or output circuit that has equal impedance from both input terminals to a common ground reference point. The industry standard for professional and sound recording installations, balanced connections have 6 dB more gain than singleended connections, and allow the use of long interconnect cables.
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 1 1 1 1 IMPORTANT AC power cord 12 VDC output (12 V trigger) cable 12A 1/4-inch slow-blow fuse for 100 –120 VAC 6A 1/4-inch slow-blow fuse for 220 –240 VAC Packet containing the owner’s reference manual and the warranty registration card. Two people are needed to remove the amplifier from the shipping box. 2.
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 clearance 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.
Figure 1 The S–1500 Multi-channel Amplifier Front Panel POWER 1 2 Power 1 Power Button 2 Stand-by and Power LED Figure 2 The S–1500 Multi-channel Amplifier Back Panel 3 4 INPUT 1 6 7 INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6 INPUT 7 12VDC IN OUT 30mA MAX. 50/60 Hz OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5 OUTPUT 6 OUTPUT 7 KRELL INDUSTRIES, INC.
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 illuminates in red, indicating that the component is in the stand-by mode.
Back Panel Description See Figure 2 on page 9 The S–1500 Multi-channel Amplifier back panel provides connections for all inputs and outputs, remote connection input and output 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 INPUTS 4 Inputs 1-7 The S–1500 amplifier has seven channel inputs for output devices with single-ended RCA connectors.
Back Panel Description, continued BACK PANEL REMOTE CONNECTIONS, continued 7 12 VDC Remote Power In The S–1500 amplifier is equipped with an input that receives 12 VDC power on/off (12 V trigger) signals from other Krell components 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.
Connecting the S –1500 Amplifier to Your System INPUT AND OUTPUT CONNECTIONS The S–1500 Multi-channel Amplifier is equipped with balanced 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 singleended connections. When level matching is critical, please keep this gain value in mind.
Connecting the S –1500 Amplifier, continued INPUT AND OUTPUT CONNECTIONS, continued 4. Connect the loudspeaker cables to the S –1500 amplifier channel output binding posts (5) located on the back panel. 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.
Operating the S –1500 Amplifier ON/OFF AND OPERATION When powering up your system, turn the amplifiers on last. When powering down your system, turn amplifiers off first. The procedures 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.
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.
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 loudspeakers.
Warranty To register your product for warranty benefits, please complete and return the Warranty Registration Card enclosed in the shipping box within 15 days of purchase. Thank you. Krell products have a limited warranty. Amplifiers, preamplifiers, preamp/ processors, and receivers carry a limited warranty of five years for parts and labor on circuitry. Loudspeakers carry a limited warranty of five years for parts and labor.
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 forwarder of your choice.
Return Authorization Procedure HOW TO EXPEDITE SERVICE If you believe there is a problem with your component, please contact your dealer, distributor, or the Krell factory to discuss the problem 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 SERVICE REQUEST FORM Simply click on the Service Request Form in the navigation tier on the Krell home page at http://www.krellonline.
Specifications S–1500 / 7 S–1500 / 6 S–1500 / 5 20 Hz to 20 kHz +0, -0.2 dB 20 Hz to 20 kHz +0, -0.2 dB 20 Hz to 20 kHz +0, -0.2 dB <0.2 Hz to 95 kHz +0 dB, -3 dB <0.2 Hz to 95 kHz +0 dB, -3 dB <0.2 Hz to 95 kHz +0 dB, -3 dB WIDEBAND, UNWEIGHTED REFERRED TO FULL POWER >104 dB OUTPUT “A” WEIGHTED >115 dB >104 dB >115 dB >104 dB >115 dB GAIN 26.2 dB 26.2 dB 26.2 dB TOTAL HARMONIC DISTORTION (THD) < 0.03%@1kHz, at 150 W, 8 Ohms < 0.03%@1kHz, at 150 W, 8 Ohms < 0.
Specifications, continued S–1500 / 7 S–1500 / 6 S–1500 / 5 90 W 170 W 1800 W 80 W 150 W 1550 W 70 W 130 W 1300 W STAND-BY IDLE MAXIMUM 310 BTU/hr. 580 BTU/hr. 2600 BTU/hr. 280 BTU/hr. 520 BTU/hr. 2200 BTU/hr. 240 BTU/hr. 450 BTU/hr. 1900 BTU/hr.
Krell Industries, Inc. 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 S–1500 Multi-channel Amplifier v 07.
