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CONTENTS

Safety Instructions ................................................................................................. 5

Scope of Supply .........................................................................................................................................6

Transportation and Cleaning .......................................................................................................................6

Selecting the Power Voltage .......................................................................................................................7

Connecting and Starting ..............................................................................................................................7

Wiring Up.....................................................................................................................................................8

Technical descriptions ............................................................................................................................... .9

THE FINAL MEASUREMENTS.............................................................................................................. .20

Warranty...................................................................................................................................................... 27

Support.........................................................................................................................................................28

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Summary of Contents for SILVER REFERENCE

Page 1: ...SILVER REFERENCE LINE PHONO PREAMP MANUAL ...

Page 2: ...ets new standards so that discerning music aficionados can finally enjoy their most beautiful recordings as if it were the true to life original The PHONO PREAMP supports RIAA FFRR COLUMBIA and EMI equalization Enjoy pure sound reproduction with our product Sincerely Yours TRINITY Team ...

Page 3: ......

Page 4: ...Safety Instructions 5 Scope of Supply 6 Transportation and Cleaning 6 Selecting the Power Voltage 7 Connecting and Starting 7 Wiring Up 8 Technical descriptions 9 THE FINAL MEASUREMENTS 20 Warranty 27 Support 28 ...

Page 5: ...the product comes in contact with liquids immediately disconnect it from the power source 5 To exclude the risk of an electric shock please never expose the product to the rain or other source of liquid 6 In thunderstorms do not install the product or put it into operation 7 Never attempt to open the appliance or repair it yourself If you open or remove the enclosure you may expose parts that are ...

Page 6: ...ANSPORTATION AND CLEANING Please only transport the parts listed in the scope of supply in the supplied flight case and use the supplied cotton gloves when unpacking and installing the appliances to avoid scratching the enclosures Clean the surfaces using the supplied microfiber cloth immerse the cloth in lukewarm water containing no detergents and then carefully wipe the surface when the cloth is...

Page 7: ...ter CONNECTING AND STARTING To install the PHONO PREAMP select a stable level surface directly next to the turn table so that the connecting cable to the tone arm is as short as possible Avoid placing the appliance in direct sunlight and never place the modules directly next to radiators or fan heaters Protect all supplied parts from humidity and moisture Only wire up the components when the devic...

Page 8: ...nnect the PHONO PREAMP to the tone arm 3 Connect the PHONO PREAMP to the LINE PREAMP 4 Connect the PHONO Load Connectors to the load connector XLR inputs 5 The precision rotary switch can be operated by a coin 6 Select the matching load for the used MC pick up 7 Additional connectors with any values can be ordered as an option ...

Page 9: ...rent or not there is a noise generator with an output voltage noise spectral density of 4kTBR We can reduce the noise by reducing the resistance R this may increase current and or power consumption but reducing the temperature k is not usually practicable if we cool a resistor from room temperature 298K to liquid nitrogen temperature 77K its noise voltage is still more than half its room temperatu...

Page 10: ...ick up manufacturer there is only one way left to optimize the overall noise performance of a phono preamplifier The amplifier has to be designed in that way that it matches with these source resistances of the MC pick ups or at least come close to this value After solving some partial differential equations it can be shown that the optimum source resistance is n n e R i That means for a given amp...

Page 11: ...lution but all transformers are limited in the band width since they cannot transfer DC voltage Depending on the construction and the transfer ratio of the transformer the lower cut off frequency can be in the range of 20Hz That means a transformer acts always like a high pass filter A 1st order high pass with 20Hz cut off frequency has the following amplitude and phase response ...

Page 12: ...ation is reached with a 20Hz high pass at 250Hz From there on the system is time coherent for the ears A few millisecond group delay variation is therefore not time coherent and the reason why the DC servo in the TRINITY PHONO PREAMP starts at 0 5Hz To avoid such a step up transformer the TRINITY PHONO PREAMP uses 12 gain stages in parallel to reduce the input noise voltage and thereby the optimum...

Page 13: ...of the RIAA equalization the worst case frequency is the lower audio band at 20Hz Even at this extreme low level of 16µV at 20Hz the noise level of the TRINITY PHONO is below 80dB And the linearity is ideal since no harmonics are measurable The noise level is further attenuated by the equalizing network which is placed after the first gain stages and works like a low pass filter That is the B band...

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Page 15: ...e accuracy of the equalizing network That means each channel consist of 48 low noise amplifier plus 8 additional extreme low noise voltage regulators which are arrange in a point of load regulation architecture THE EQUALIZATION The very high accurate equalization curves are calculated with the help of the Laplace operator and the results are transferred as a look up table to the audio analyser to ...

Page 16: ...RIAA Frequencies 50 05Hz 500 5Hz 2122Hz Time Constants 3179 9us 317 99us 75 002us Laplace Operator 1 3180µs 1 75µs 1 318µs Frequency Hertz 20 50 100 200 500 1k 2k 5k 10k 20k Inverse RIAA dB 15 10 5 0 5 10 15 20 ...

Page 17: ...R Frequencies 100 Hz 500Hz 3000Hz Time Constants 1591 5us 318us 53us Laplace Operator 1 µs 1 53µs 1 1591 5 318µs Frequency Hertz 20 50 100 200 500 1k 2k 5k 10k 20k Inverse FFRR London Decca dB 15 10 5 0 5 10 15 20 ...

Page 18: ... COLUMBIA Frequencies 100Hz 500Hz 1590Hz Time Constants 1591 5us 318us 100us Laplace Operator 1 1591 5µs 1 100µs 1 318µs Frequency Hertz 20 50 100 200 500 1k 2k 5k 10k Inverse COLUMBIA dB 15 10 5 0 5 10 15 20 ...

Page 19: ...erse EMI Frequencies 70Hz 500Hz 2500Hz Time Constants 2273 6us 318us 63 6us Laplace Operator 2273 6 63 6 1 µs 1 µs 1 318µs Frequency Hertz 20 50 100 200 500 1k 2k 5k 10k Inverse EMI dB 15 10 5 0 5 10 15 20 ...

Page 20: ...plete measurement protocol and not with some typical value published on the web page or in the data sheet What you see in the measurement results is what you get The measurements are done after a burn in of 48hours and with a calibrated input voltage of 350µV at 1kHz ...

Page 21: ...gress Any further claims in particular compensation damage of any nature are excluded The warranty period is not extended by any work performed during the warranty period neither for replaced nor repaired components Any improper handling or interventions by persons not authorized by TRINIT Electronic Design GmbH will render the warranty claim null and void This also applies to damage arising from ...

Page 22: ...s relating to installation operation or options we will be pleased to answer them TRINITY Electronic Design GmbH Johann Wieser Ring 11 8609 Aschheim Germany Tel 49 0 89 20186577 E mail db trinity ed de Internet http www trinity ed de ...

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