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Summary of Contents for Trilogy 931
- Page 1 U SER M A N U AL USER MANUAL 931.21102014.V1...
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Page 2: Thank You
Welcome Firstly, thank you for purchasing your Trilogy Audio Systems 931 Headphone Amplifier, we value your custom. We strive to design and build world class products that stand the test of time. By reading this manual you can gain clear understanding of its operation and learn to care for it correctly. -
Page 3: Table Of Contents
GETTING STARTED GLOSSARY & SPECIFICATIONS Introduction Glossary Unpacking Specifications Environment RETURNS & ACKNOWLEDGEMENTS Power Supply Warning! Listening with Headphones Returns Connections Disposal & Recycling Operation Acknowledgements CARE & SERVICE Cleaning Servicing Declarations USER MANUAL 931.21102014.V1... -
Page 4: Introduction
Should any part of this manual or the operation of the 931 not be clear to you, please do not hesitate to contact your Trilogy dealer. If they are not available please contact ourselves directly. -
Page 5: Power Supply
Warning! The 931 must be earthed. Do not disconnect the AC earth at any time. If in doubt about any aspect of power supply, consult your Trilogy dealer or a qualified electrician. -
Page 6: Listening With Headphones
Listening with Headphones IMPORTANT! The 931 is capable of delivering high sound pressure levels. Listening at high sound pressure levels may result in permanent hearing damage. The following table is intended as an approximate guide to recommended exposure levels. Example Source... - Page 7 Trilogy 931 | Rear View USER MANUAL 931.21102014.V1...
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Page 8: Connections
The amplifier has two single ended inputs on RCA “Phono” connectors. The output is via a standard 6.35mm (¼”) type A jack socket. Most dynamic headphones are suitable for connection; if you are in doubt about the suitability of your headphones seek advice from your Trilogy dealer. - Page 9 Trilogy 931 | Front View USER MANUAL 931.21102014.V1...
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Page 10: Operation
Optimal performance will be achieved in about 20 minutes once the headphone amplifier has become quite warm to the touch. The high mass heatsink for the output devices is at the heart of the 931’s design. Normal extruded finned heatsinks resonate quite badly, this has a negative effect on the small signal performance of the output stage. -
Page 11: Cleaning
Servicing Your 931 has been designed to provide a lifetime of reliable service and should not need servicing if operating normally. There are no user serviceable parts inside. Do not open or attempt to repair the unit. Refer to your authorised Trilogy dealer for servicing. -
Page 12: Glossary
Sensitivity The efficiency of the headphone in Single Ended The circuit topology used by the 931 which turning electrical energy into acoustic Class A amplifies the music waveform using a single energy. -
Page 13: Returns
Returns Should it be necessary for your 931 to be serviced, please send it in the original packaging to your dealer. If this is not possible please contact us directly and request a Return Authorisation Number. Please mark this number in the space provided on the outer packaging. Please do not send products back to us without this number as we will not accept liability for the product.
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