FET PHONO PREAMPLIFIER 06x OPERATION MANUAL T E C H N O L O G I E S I N C .
WARNING 2 CAUTION WARNING ! CAUTION: TO PREVENT ELECTRIC SHOCK, DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. THIS SYMBOL IS TO ALERT YOU OF THE PRESENCE OF UNINSULATED DANGEROUS VOLTAGE WITHIN THE UNIT'S ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. ! THIS SYMBOL IS INTENDED TO ALERT YOU OF THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE UNIT.
INTRODUCTION 3 Thank you for selecting Coda Technologies and our precison line of of high definition, high value audio components. The Phono Preamplifier 06x is a precision device, designed in an effort to provide the listener with unmatched sound quality, design, and construction which will provide you with many years of listening enjoyment.
INSTALLATION 4 The first section of the installation instructions for the 06x covers basic configuration of the preamplifier. These brief steps will bring the 06x into operation. Make sure during installation that the preamplifier and all other components of your audio system are unpowered. The diagram below shows the basic configuration, but we recommend you read the whole manual in detail to ensure the best performance out of your Coda equipment.
INSTALLATION 5 I. Chassis Warning: Never operate this unit with the top cover removed. Never make any internal adjustments while this unit is connected to an AC power source. 1. Prior to installing the unit some configuration can be made internally, including input selection and per-channel gain and loading. With the unit unplugged, remove the cover using the supplied Allen key. There are six gain switches split into two sections and two input selector switches.
INSTALLATION 6 2. In order to set the input loading you must toggle the DIP switches which are located on the main board of the preamplifier. Each one of these switches connects a resistor or capacitor in parallel with the input and so adjusts the load value. The default values are 47kΩ and 50pF. Refer to the diagram below, which is repeated inside the unit, to determine the values which need to be switched in for your cartridge. Replace the cover after setting the switches.
DESIGN PHILOSOPHY 7 II. Source, Output and Power Connections The input and output connections are marked on the rear lip of the top cover of the preamplifier. Remember when connecting input and output cables to avoid inadvertently swapping left / right channel connections. The connections are as follows: 1. Ground Post 2. Unbalanced Input 3. Balanced Input 4. Unbalanced Output 5. Balanced Output 6.
DESIGN PHILOSOPHY 8 The circuitry utilized in your phono preamplifier is the result of an advanced and complete design process combining innovation and proven fundamentals. This process avoids both the limitations of total adherence to convention and the flaws resulting from inappropriate application of clever circuit gimmicks. Our approach demands painstaking consideration of ever facet of each design choice regardless of how small.
DESIGN PHILOSOPHY 9 diodes. The resulting voltage is heavily filtered and delivered to each stage through independant class-A followers which completely decouples the stages. The resulting non-reactive low impedance over an extremely wide bandwidth yields a perfect power source for the individual circuits. The simplicity and absolute stability of the supplies removes the chance of unpredictable interactions which may occur with the more elaborate, high-feedback circuitry often used in similar equipment.
TECHNICAL DATA 10 Circuit Specifications Frequency Response: +/- .2dB of RIAA with subsonic roll off @ 14Hz Distortion: < .01% from 20Hz to 20kHz @ 3V peak into 600Ω or higher shunted by 100pf or less.
CARE AND HANDLING 11 The interior of the preamplifier requires no special care. If exterior cleaning beyond simple dusting is required, any dilute ammonia-based product is recommended. Do not use any abrasive rags, cleaners or chemical solvents on the amplifier. When handling the preamplifier, take care not to mar the faceplate. Aluminum is a medium hardness metal and can be scratched by harder tool steels, and the grained surface can be easily marred if the amplifier is set face-down on a hard surface.
WARRANT Y 12 I.Warranty - Any failure of the Phono Preamplifier 06x, hereafter known as the product or original product, to operate or to meet specifications, applicable at time of manufacture, due to a manufacturing defect or component failure, will be corrected by Coda Technologies without charge for parts or labor, for a period of ten years from date of original purchase.
Warranty Registration 13 Fill in this registration sheet and fax or mail it to Coda Technologies to ensure you are in our warranty system. This will facilitate warranty service should it become necessary. It is recommended that you retain a copy of this form for your own records. Coda Technologies’ address and fax number are located on the back of this manual.
7850 CUCAMONGA AVENUE #34 SACRAMENTO, CA 95826 USA T E C H N O L O G I E S I N C . phone +01 916.383.3653 fax +01 916.455.3653 on the web at CODA.CC email us at info@coda.
