ONGAKU Kensei ! ! STEREO POWER AMPLIFIER OWNER’S INFORMATION ! !
CONTENTS ! 1) IMPORTANT SAFETY INFORMATION 2) CE DECLARATION OF CONFORMITY DISPOSAL POWER REQUIREMENTS 3) INTRODUCTION 4) OVERVIEW 5) UNPACKING AND INSTALLATION 6) VALVE INSTALLATION 9) CONNECTION 10) OPERATION 11) TECHNICAL SPECIFICATIONS 12) WARRANTY 13) CONTACT INFORMATION
! IMPORTANT SAFETY INFORMATION ! RISK OF SHOCK OR ELECTROCUTION! INTERNAL OPERATING VOLTAGES ARE LETHAL! Do not remove top cover, unless specifically instructed to do so in the user manual. This unit contains fuses and other safety components in accordance with BS60065 requirements. In the event of failure, replacement fuse or safety component must be of the same part type and value. ! SUCH REPLACEMENT MUST ONLY BE CARRIED OUT BY A QUALIFIED SERVICE TECHNICIAN.
CE DECLARATION OF CONFORMITY We declare under our sole responsibility that this product is in conformity with the following standards or standardized documents: BS EN 60065 in accordance with the regulations 73/23/EEC, 89/336/EEC (from 1 January 1997) CE 94 Peter Qvortrup, Director Audio Note (UK) Limited 25 Montefiore Road Hove East Sussex BN3 1RD United Kingdom Tel: Fax: +44 (0)1273 220 511 +44 (0)1273 731 498 ! DISPOSAL This product must not be disposed of as normal household waste.
INTRODUCTION Thank you for purchasing this Audio Note (UK) product. With the correct care it should give you many years of pleasure and enjoyment. Please take the time to read all of the information in this manual before connecting your new component to an electrical supply or your system, to ensure both your safety and satisfaction. Please note that due to our desire to continually improve products, specifications are subject to change without notice.
ONGAKU KENSEI Congratulations on your purchase of the Audio Note (UK) ONGAKU Kensei stereo power amplifier. The ONGAKU integrated has rightly earned a place in history; its name is synonymous with the finest possible audio reproduction, and for once the reality is equal to the legend! The ONGAKU Kensei shares the same circuit as its integrated sibling, but instead is equipped with a single pair of Balanced / XLR inputs.
UNPACKING AND INSTALLATION Please take care when unpacking your ONGAKU Kensei stereo power amplifier. Choose a clean, clear location to unpack your unit. Be aware that the amplifier is very heavy; before attempting to unpack or lift the unit, check the weight and if necessary use more than one person so that it can be moved safely and easily. We recommend that you retain and carefully store all of the original packing materials, in case transportation / shipping is required at a later date.
VALVE INSTALLATION The amplifier is shipped without the valves installed. It is necessary to install the valves before the amplifier can be operated. It is essential that the valves are installed correctly or serious damage that is not covered by the warranty will result. We recommend that your dealer perform this procedure for you if you are in any way unsure. FIRSTLY, ENSURE THAT THE AMPLIFIER IS NOT CONNECTED TO A MAINS ELECTRICAL SUPPLY, AND THAT THE POWER CORD IS NOT CONNECTED TO THE AMPLIFIER.
VALVE INSTALLATION continued… Inspect a VT-4C valve and you will notice that there is a small ‘pin’ protruding from one side of the valve base; this locating pin ensures that the valve can only be correctly inserted into the amplifier in one way. Also examine the two large apertures in the top plate of the amplifier, located between the two small valve sockets at the front of the amplifier and the black rectangular transformer covers. These are the insertion points for the VT-4C valves.
VALVE INSTALLATION continued… Looking from the back of the amplifier, insert the 5R4WGB valves into the two empty sockets located on the left, situated between the black rectangular transformer covers and the loudspeaker connection binding posts. Locate the rib on the central pin of the valve and align with the valve base (it can only be inserted one way due to this locating rib) and with gentle but firm pressure insert the valve. Finally, insert the two 6V6 signal valves into the front two sockets.
CONNECTION Line inputs Being a stereo power amplifier, the ONGAKU Kensei is fitted with a pair of XLR / Balanced input sockets. Looking from the front of the amplifier, they are located towards the front of the left hand side panel. Connect the outputs from your preamplifier to these inputs. Ground Post A ground post is provided for connection to those source components that also use a separate ground terminal.
CONNECTION continued… CABLE CONFIGURATION OPTIONS KENSEI INPUT PREAMP OUTPUT 2 1 3 2 XLR FEMALE 3 SCREEN 1 XLR MALE CONVENTIONAL: SCREEN CONNECTED AT BOTH ENDS KENSEI INPUT PREAMP OUTPUT 2 1 2 1 3 XLR FEMALE 3 SCREEN XLR MALE SCREEN CONNECTED AT PREAMP END ONLY, TO ELIMINATE GROUND LOOPS KENSEI INPUT PREAMP OUTPUT 2 1 3 SCREEN RCA MALE XLR MALE CABLE CONFIGURATION FOR RCA SINGLE ENDED PREAMP OUTPUT TO XLR BALANCED AMPLIFIER INPUT
OPERATION Once all the connections are completed and checked, ensure that the volume control of your preamplifier / source is at the minimum setting. Turn on all components in the signal chain before the ONGAKU Kensei; the power amplifier should always be the LAST component to be switched ON, and the FIRST to be switched OFF. Turn on the amplifier by using the rocker switch located at the top right of the rear panel, just above mains inlet socket (viewing the amplifier form the rear).
TECHNICAL SPECIFICATIONS INPUT IMPEDANCE 600 Ohm, line level INPUT SENSITIVITY 1.4V for full output MAXIMUM OUTPUT 20 watts (approximate) per channel into 4 or 8 Ohm loads CHANNEL BALANCE +/- 0.3dB VALVE COMPLIMENT 2 x 5R4WGB 2 x GE VT4-C 2 x 6V6 UNIT WEIGHT 48KG SHIPPING WEIGHT (ORIGINAL PACKAGING) 58.5KG UNIT DIMENSIONS 305mm (h) x 305mm (w) x 640mm (d) SHIPPING DIMENSIONS (ORIGINAL PACKAGING) 420mm (h) x 420mm (w) x 760mm (d) MAINS INPUT AC 100-120V/220-240V 50/60 Hz MAINS FUSE 3.
WARRANTY INFORMATION Audio Note (UK) warrants this product to be free from defects in materials and workmanship for two years from the original date of purchase from an appointed Audio Note (UK) dealer, and agrees to cover the cost of parts and associated labour required to correct such defects, subject to terms & conditions. This Warranty is offered to the first purchaser only. Any valves supplied with the unit are warranted for three months from the original date of purchase.
CONTACT INFORMATION If in the future your Audio Note (UK) product requires servicing, or if you require technical support or have any questions regarding this or any of our other products, please contact your local Audio Note (UK) dealer. Alternatively, please feel free to contact us directly: -! Audio Note (UK) Limited 25 Montefiore Road Hove East Sussex BN3 1RD United Kingdom Tel: +44 (0)1273 220 511 Fax: +44 (0)1273 731 498 e-mail: info@audionote.co.
