Related Manuals for Trafomatic Audio LARA
Summary of Contents for Trafomatic Audio LARA
- Page 1 LARA Line Level Preamplifier www.trafomaticaudio.com Rev. 1 www.trafomaticaudio.com Rev. 1...
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Page 3: Table Of Contents
Table of Contents Table of Contents Section Page No. Section Page No. Safety Precautions Safety Precautions Getting Started Getting Started About Your Line Preamplifier About Your Line Preamplifier Packaging / Preparation for use Packaging / Preparation for use Controls and Their Functions Controls and Their Functions Front Panel Front Panel Rear Panel... -
Page 4: Safety Precautions
7) Fuses - For continued protection against fire hazard, replace fuses with the same type and rating of the fuses specified. When changing fuses, completely unplug the AC cord from the wall outlet. 8) Turn-off when not using - Turn off the unit as soon as you stop actively using it. Unplug the power supply from the wall during a lightning storm or when the product is to be left unattend- ed and unused for longer periods of time. LARA - LINE LEVEL Preamplifier - User Manual... - Page 6 MAINTENANCE 1) Cleaning. Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a dry cloth for cleaning. Do not use any type of abrasive pad, scour- ing powder or solvent such as alcohol or benzene. 2) Tube replacement. Vacuum tubes have life in the 5000 hour range. We recommend replac- ing the tubes after 24-36 months, depending on your listening habits. That will ensure that the preamplifier always performs at its best and tube failure will not overstress other parts of the unit. 3) Biasing the amplifier. Biasing of the LARA preamplifier is not required. SERVICE 1) Replacement Parts. When replacement parts are required, be sure that the service techni- cian uses replacement parts specified by the manufacturer or parts with the same character- istics as the original part. Unauthorized substitutions may result in fire, electric shock or other hazards. 2) Tube replacement. Should it become necessary to replace the vacuum tubes, remove the AC power plug from the wall and allow thirty minutes (30 min) for the high voltage capacitors to discharge.
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Page 7: Getting Started
GETTING STARTED - ABOUT YOUR LINE PREAMPLIFIER Your LARA Line Level Preamplifier was designed to provide high value based on its high performance, which is a result of a carefully designed circuit and optimized component selec- tion. The design utilizes minimum number of active parts and top quality passive elements. The LARA was conceived as a preamplifier with recognized Trafomatic Audio sound quality while occupying more affordable price level. The design is based on a very linear 6N30P vacuum tube and features maximum gain of 20dB. -
Page 8: Packaging / Preparation For Use
Connect your audio sources to the preamplifier’s inputs (L1 through L3 and XLR1, XLR2). If some of your sources require signal grounding (turntable tonearm, for example), connect the wire to the grounding lug (GND) on the rear panel of the preamplifier. By using the front panel input selector switch, select the appropriate audio source (L1 through L3 and XLR1, XLR2). Make sure that volume control is set to minimum position. Turn on the LARA by using power switch located on the left side of the power supply unit. Turn on your power amplifier. Slowly increase volume, to make sure there are no unusual noises coming out of the speak- ers. CONGRATULATIONS! You are all set and ready to enjoy high sound quality of the LARA Line Level preamplifier. LARA - LINE LEVEL Preamplifier - User Manual... -
Page 10: Controls And Their Functions
LEFT SIDE OF THE UNIT Power ON/OFF switch: The switch turns the preamplifier ON and OFF When turning on the preamplifier, make sure that the volume control is at its minimum. The preamplifier will be fully functional after only 30 seconds. However, as it warms up over the first 15 minutes of operation, you may notice subtle improvements in the sound quality. At the end of your listening session, make sure to turn the amplifier off. Leaving it turned on does not improve sound quality and it reduces life of the vacuum tubes. The preamplifier should always be turned on and off via its own power switch. The left side also has the power on light LARA - LINE LEVEL Preamplifier - User Manual... -
Page 12: Rear Panel
NOTE: never use the so called “cheater plugs” to remove ground from the system, as it cre- Two switches for reversing phase of the output sig- nal (PHASE) ates potentially hazardous conditions. Single-ended RCA outputs (LINE) Power supply connector LARA - LINE LEVEL Preamplifier - User Manual... -
Page 13: Servicing
SERVICING High quality parts and careful design of the LARA ensure long and reliable operation without need for any maintenance other than that listed in the MAINTENANCE section. In an unlikely case that the unit does not operate as intended, please contact factory or your local distributor for assistance. -
Page 14: Technical Specifications
REMOTE CONTROL LARA comes with its own dedicated remote control circuit. For the sake of simplic- ity, reliability and long battery life, basic functionality is provided via two buttons: volume up and down. TECHNICAL SPECIFICATIONS: LARA - LINE LEVEL PREAMPLIFIER Class of operation: Fully balanced Class A with line output transformers S/N: –... - Page 15 www.trafomaticaudio.com...
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