! P4 Balanced ! ! MONO POWER AMPLIFIERS 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 8) CONNECTION 10) OPERATION 11) TECHNICAL SPECIFICATIONS 12) WARRANTY INFORMATION 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.
P4 BALANCED MONO POWER AMPLIFIERS Congratulations on your purchase of the Audio Note (UK) P4 Balanced mono power amplifiers. They are Pure Class A Parallel Singled Ended valve amplifiers that use a pair of the highly regarded 300B triode valves per channel, producing a level of performance that is radically superior to the vast majority of current designs.
UNPACKING AND INSTALLATION Please take care when unpacking your P4 Balanced amplifiers. Choose a clean, clear location to unpack them, and be aware that the amplifiers are very heavy; before attempting to unpack or lift the units, check the weight and if necessary use more than one person so that they 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 amplifiers are shipped without their valve compliment installed. It is necessary to install the valves before operation. 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 AMPLIFIERS ARE NOT CONNECTED TO A MAINS ELECTRICAL SUPPLY, AND THAT THE POWER CORDS ARE NOT CONNECTED TO THE AMPLIFIER.
VALVE INSTALLATION continued… You should find the following valves: 2 x 5687 input stage valves 4 x 300B output valves 2 x 5U4GB rectifier valves Once again, please understand that it is absolutely vital these valves are fitted correctly. Looking from the front of the amplifier install the 300B valves first. Inspect a 300B and you will notice that two of the metal pins located at the bottom of the valve are larger than the other two; this is to help ensure that the valve can only be inserted one way.
CONNECTION Line inputs Being mono power amplifiers, each P4 Balanced is fitted with a single XLR / Balanced input. Looking from behind the amplifiers, they are located at the top / right hand side of the rear panels. Connect the outputs from your preamplifier to these inputs. If your preamplifier is equipped with RCA / Single Ended outputs only, please refer to the ‘Cable Configuration Options’ information on the following page.
CONNECTION continued… CABLE CONFIGURATION OPTIONS P4 INPUT PREAMP OUTPUT 2 1 3 2 XLR FEMALE 3 SCREEN 1 XLR MALE CONVENTIONAL: SCREEN CONNECTED AT BOTH ENDS P4 INPUT PREAMP OUTPUT 2 1 2 1 3 XLR FEMALE 3 SCREEN XLR MALE SCREEN CONNECTED AT PREAMP END ONLY, TO ELIMINATE GROUND LOOPS P4 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 P4 Balanced; they should always be the LAST components to be switched ON, and the FIRST to be switched OFF. Turn on the amplifiers by using the rocker switch located on the rear top left of the back panels, just above mains inlet socket.
TECHNICAL SPECIFICATIONS INPUT IMPEDANCE 600 Ohm INPUT SENSITIVITY 1.6V for full output MAXIMUM OUTPUT 18 watts RMS per channel into 4 or 8 Ohm loads CHANNEL BALANCE +/- 0.
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.
