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Summary of Contents for Trafomatic Audio GLENN
- Page 1 GLENN PARALLEL SINGLE-ENDED MONO POWER AMPLIFIER WITH EXTREME FLEXIBILITY www.trafomaticaudio.com...
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Page 3: Table Of Contents
Table of Contents Section Page No. Safety Precautions Getting Started About Your Amplifier Packaging / Preparation for use Controls and Their Functions Front Panel Rear Panel Servicing Technical Specifications 14... -
Page 4: Safety Precautions
Retain the User’s Manual. The safety and operating instructions should be retained for future reference. Follow Instructions. All operating and instructions for use should be closely followed. Power Sources. This product should be operated using only the type of power source indicated on the marking label. If you are not sure of the type of power supply in your home, consult your product dealer or local power company. Grounding. This product is equipped with a three prong IEC connector. Always use power cord with ad- equate wire cross section and an electrical outlet that is grounded. If you do not know whether the outlet is grounded, consult your electrician or local power company. Power Cord Protection. Power supply cords should be routed so that they are not likely to be walked on or pinched. Pay particular attention to cords at plugs, convenience receptacles and where they exit from the product. Always use power cords with adequate current ratings and safety certifications (UL, CE, TÜV, CSA, etc.) 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. If in doubt what fuses to use, contact factory or authorized distributor. Tubes. During operation, the vacuum tubes get very hot. Allow at least 60 minutes after removing power for tubes to cool down. Only after 60 minutes you can remove the protective tube cover, if tube replace- ment is required. Cooling. To ensure proper ventilation, there should be nothing placed on top of the unit. Ventilation holes should be unobstructed with at least 12” (300mm) of empty space above and around the unit. Turn-off when not using for prolonged periods of time. The amplifier should be turned off when not attended. That extends tube life, saves power and prevents any potential hazardous conditions. GLENN - Parallel Single-Ended Mono Power Amplifier with extreme flexibility... - Page 6 PLACEMENT Accessibility. It is normal for an audio device to run warm if used for prolonged periods. Always place your device away from children and pets to prevent burns. Ventilation. Proper ventilation is critical for safe and reliable operation of all vacuum tube based equipment. This product should not be placed in a built-in installation or rack unless proper ven- tilation is provided or the manufacturer’s instructions have been followed. Never place anything on top of your unit that could obstruct airflow and cause vacuum tubes to overheat and damage the unit. Do not place your unit in a closed bookcase; overheating could occur. Ensure that there is at least 12” (300 mm) of open space above and around the unit. Surface. Place the unit on a flat level surface. Care should be taken to prevent objects from falling and liquids from spilling into the unit. Do not subject the unit to excessive smoke, dust, vibration or shock. MAINTENANCE 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, scouring powder or solvent such as alcohol or benzene. Tube replacement. Vacuum tubes have life in the 10,000 hours range. We recommend replac- ing the tubes after 36 months, if necessary, depending on your listening habits. That will ensure that the unit always performs at its best and tube failure will not overstress other parts of the unit. Biasing the amplifier. The GLENN amplifiers have automatic tube biasing. No user action required. SERVICE Replacement Parts. When replacement parts are required, be sure that the service technician uses replacement parts specified by the manufacturer or parts with the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock or other hazards. Tube replacement. Should it become necessary to replace the vacuum tubes, remove the AC power plug from the wall and allow sixty minutes (60 min) for the tubes to cool down and high voltage capacitors to discharge. Follow instructions outlined below in the section “Handling vac- uum tubes”. The protective tube cover with glass panels should only be removed after the 60 minutes period. Modifications. Modifications to the amplifier are strongly discouraged. The unit was designed by experienced engineers and tested for safe and reliable operation. Any modification may pose a safety risk and result in reduced lifetime of the product. Opening the amplifier will void warranty. GLENN - Parallel Single-Ended Mono Power Amplifier with extreme flexibility...
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Page 7: Getting Started
The design is based on parallel-connected 300B direct-heated triodes (DHT) operating in pure Class A. The 300B tubes are paired with a professional E182CC tube. Rectifier tube is the highly-acclaimed 5U4G. This combination of tubes and matching transformers offers 12-26W of unrestrained output power with all the sonic benefits of single-ended amplifier con- figurations. The GLENN offers unmatched flexibility to fine tube sound quality for best match to different speakers and listening tastes. Fit and finish of the GLENN are complementing its impressive sound quality and make it a cen- ter of attention in any audio setup. The GLENN has one balanced (XLR) and one unbalanced (RCA) input. There are outputs for four (4) and eight (8) ohm speakers. -
Page 8: Packaging / Preparation For Use
Save the original packaging in a dry place. The packaging has been designed to protect your device from stresses incurred during shipping. Using packaging different from the original increases risks of shipping damages. PREPARATION FOR USE Place your unit on a flat, stable surface. Power switch, located on the rear side of the unit should be in the OFF (0) position. Plug in the power cord. Connect audio source to one of the amplifier’s inputs. Make sure that volume control on your audio source is set to minimum position. Turn on the GLENN by using ON/OFF power switch located on the rear side of the unit. Allow 30 seconds for the tubes to warm up. Slowly increase volume, to make sure there are no unusual noises coming out of the speakers. CONGRATULATIONS! You are all set and ready to enjoy high sound quality of the GLENN Mono Power Amplifier. GLENN - Parallel Single-Ended Mono Power Amplifier with extreme flexibility... -
Page 10: Controls And Their Functions
CONTROLS AND THEIR FUNCTIONS FRONT PANEL A quick look at the front panel uncovers many possibilities for customizing the GLENN to fit many speakers and listening tastes. A large multi-purpose back-lit instrument occupies central position on GLENN’s front panel. In conjunction with the Instrument switch it can be used to monitor bias of the output tubes, as a VU or power meter or it can simply be turned off. In normal operation, with properly biased good tubes, the needle on the instrument should be somewhere in the range of -1 to +1 on the top scale, or even slightly higher if the higher tube dissipation setting is selected. Standby switch: when this switch is in the stby position high voltage is turned off and only filament power is on. That makes it possible for GLENN to start quickly, after the standby switch is moved to the ON position. Recommended use of the Standby mode is when turning... -
Page 12: Rear Panel
CONTROLS AND THEIR FUNCTIONS REAR PANEL The rear panel hosts: AC Inlet with integrated input fuse Power switch marked 0/I One balanced (XLR) input One unbalanced (RCA) input GND LIFT switch which can be used to break system ground loop when in the GND LIFT position. GND terminal: this terminal can be used as part of the “star” grounding scheme, where both amplifiers are connected to the grounding terminal of a matching preamplifier. Speaker terminals, in form of five-way binding posts. There are three terminals, marked 0, 4 and 8 ohm. Speaker wire going to the negative speaker terminal should be connected to the binding post marked with 0, while the positive terminal should be connected to the binding post with marking that corresponds to the nominal impedance of the speaker. GLENN - Parallel Single-Ended Mono Power Amplifier with extreme flexibility... -
Page 14: Servicing
SERVICING High quality parts and careful design of the GLENN 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. CAUTION Lethal voltages are present inside the amplifier. Do not remove the amplifier’s covers. Servicing of the unit should be performed only by authorized service personnel. -
Page 15: Technical Specifications
TECHNICAL SPECIFICATIONS: GLENN | PARALLEL SINGLE-ENDED MONO POWER AMPLIFIER Class of operation: Parallel Single-Ended (class A), Direct Heated Triode (DHT) Tube complement: 2x300B, 1x E182CC, 1x 5U4G Input impedance: 47K Inputs: 1x XLR, 1x RCA Input sensitivity: 3Vpp Outputs: 4 and 8 ohm Output power: 12-26W, depending on the tube and selected plate dissipation setting THD: 4% at maximum power and with 1kHz signal S/N ratio: 90 dB Frequency bandwidth: 8Hz (-2dB) – 60kHz (-3dB) Input voltage: 230V/50Hz (100-120-220-240V, 50-60Hz available on request) Power consumption: 250VA Size: 480x340x270mm (18.9” x 13.4” x 10.6”) Weight: 26 kg per unit (57.3 lbs) GLENN - Parallel Single-Ended Mono Power Amplifier with extreme flexibility... - Page 16 GLENN PARALLEL SINGLE-ENDED MONO POWER AMPLIFIER WITH EXTREME FLEXIBILITY www.trafomaticaudio.com...
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