Krell Evolution One Owners Reference

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Evolution One Monaural Power Amplifier Owners Reference, v 05.0 Kr ell Industries, Inc. 45 Connair Road Orange, CT 064773650 USA TEL 203 799 9954 FAX 203 8912028 EMAIL krell@krellonline.com WEBSITE http://www.krellonline.com This product complies with the EMC directive (89/336/EEC) and the lowvoltage directive (73/ 23/EEC). WARNINGS The amplifier must be placed on a firm, level surface where it is not exposed to dripping or splash ing. The ventilation grids on the top of the amplifier and the space underneath the amplifier must be unobstructed at all times during operation. Do not place flammablematerial above or beneath the amplifier. Before making connections to the amplifier, ensure that the back panel power switch is down. Make sure all cable terminations are of the highest quality, free from frayed ends, short circuits, or cold solder joints. The differential circuitry employed with an Evolution One Monaural Power Amplifier requires special attention when connecting speakers. Do not connect the negative speaker terminals together. Do not connect the negative speaker terminals to ground. Do not connect an Evolution One Monaural Power Amplifier to a loudspeaker selector device that employs a common ground scheme, as it may shortcircuit the amplifier output. THERE ARE NO USER SERVICEABLE PARTS INSIDE AN EVOLUTION ONE MONAURAL POWER AMPLIFIER. Please contact Krell if you have questions not addressed in this guide. This product is manufactured in the United States of America. Krell ®is a registered trademark of Krell Industries, Inc., and is restricted for use by Krell Industries, Inc., its subsidiaries, and authorized agents. Evolution Bias -„¢ is a trademark of Krell Industries, Inc. and is a Krell technology based on U.S. Patent No. 5,331,291. CAST -„¢, Evolution CAST -„¢, and Krell Current Mode -„¢ are trademarks of Krell Industries, Inc. All other trademarks are registered to their respective companies. © 2005 by Krell Industries, Inc. All rights reserved P/N 307772 Specifications Frequency response 20 Hz to 20 kHz ±0.05 dB 0.6 Hz to 220 kHz +0, -“3 dB Signaltonoise ratio 118 dB, Aweighted Gain 25.8 dB Total harmonic distortion <0.01% at 1 kHz, at 450 W, 8 Ohms <0.1% at 20 kHz, at 450 W, 8 Ohms Input impedance Balanced: 100 kHz CAST: 50 Hz Input sensitivity Balanced: 3.08 V RMS CAST: 3.08 mA RMS Output power 450 W RMS at 8 Ohms 900 W RMS at 4 Ohms 1800 W RMS at 2 Ohms Output voltage 170 V peaktopeak 60 V RMS Output current 57 A peak Slew rate 100 V/us Power consumption Standby: 225 W Idle: 300 W Maximum: 3600 W 31 Inputs 1 balanced via XLR connector 1 CAST via 4pin bayonet connector Outputs 1 pair Krell binding posts Dimensions Amplifier chassis: 15.8 in. W x 6.2 in. H x 21.5 in. D 40 cm W x 15.8 cm H x 54.7 cm D Power supply chassis: 15.8 in. W x 6.4 in. H x 20.5 in. D 40 cm W x 16.1 cm H x 52.2 cm D Amplifier channel: 15.8 in. W x 12.5 in. H x 21.5 in. D 40 cm W x 31.6 cm H x 54.7 cm D Weight Amplifier chassis: Shipped: 70 lbs., 31.7 kg Unit Only: 55 lbs., 24.9 kg Power supply chassis: Shipped: 110 lbs., 49.8 kg Unit Only: 95 lbs., 43 kg

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iii Contents List of Illustrations, page iv A Letter from Dan DAgostino, page 1 SECTION ONE: About Krell, page 3The Krell Legacy, Revolutionary Krell CAST Technology, Ensuring Maximum Perfor mance, and Definition of Terms SECTION TWO: Unpacking and Placement, page 12 Opening the Evolution One Shipping Cartons SECTION THREE: Anatomy of an Amplifier, page 15 Features and Benefits of the Evolution One Design SECTION FOUR: Connecting an Evolution One Amplifier to Your System, page 19 CAST and Voltage Connections, Connection Steps, DC Protection Circuitr y, and Remote Control Options SECTION FIVE: Amplifier Operation, page 22 Powering Up, Adjusting Power Meter Modes, Switching between CAST and Voltage Connections, Amplifier Car e SECTION SIX: Amplifier Troubleshooting, page 26 W ARRANTY, page 28 RETURN AUTHORIZATION PROCEDURE, page 30 SPECIFICATIONS, page 31 Return Authorization Procedure If you believe there is a problem with your component, please contact yo\ ur dealer, distributor, or the Krell factory to discuss the problem before you return the comp\ onent for repair. To expedite service, you may wish to complete and email the Service Request Form in the Service Section of our website at: http://www.krellonline.com To return a product to Krell, please follow this procedure so that we may serve you better: 1. Obtain a Return Authorization Number (R/Anumber) and shipping address from the Krell Service Department. 2. Insure and accept all liability for loss or damage to the product during\ shipment to the Krell factory and ensure all freight (shipping) charges are pre\ paid. The product may also be hand delivered if arrangements with the Service \ Department have been made in advance. Proof of purchase will be required for warran\ ty validation at the time of hand delivery . IMPORTANT Use the original packaging to ensure the safe transit of the product to the factory, dealer, or distributor . Krell may, at its discretion, return a product in new packaging and bill the owner for such packaging if the product received by Krell was boxed in nonstandard pack aging or if the original packaging was so damaged that it was unusable. If Kr ell deter mines that new packaging is required, the owner will be notified before the product is r etur ned. To purchase additional packaging, please contact your authorized Krell dealer, distributor, or the Krell Service Department for assistance. To contact the Krell Service Department TEL 2037999954, MondayFriday 9:00 AM to 5:00 PM EST F AX 2037999796 EMAIL service@krellonline.com WEBSITE http://www.krellonline.com Evolution One PRODUCT MODEL NUMBER SERIAL NUMBER 30