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Summary of Contents for Herron Audio VTSP-3A
- Page 1 Owner’s Manual VTSP-3A Vacuum Tube Stereo Preamplifier...
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Page 2: Table Of Contents
Front Panel Features Rear Panel Features Remote Control Installation and Operation Changing Tubes Technical Specifications FCC Notice Re-cycling RoHS Compliance ©2013 Herron Audio Division of Herron Engineering, Inc. 12685 Dorsett Road # 138 Maryland Heights, MO 63043 (St. Louis area) 314.434.5416 www.herronaudio.com... -
Page 3: General Safety, Installation
VTSP-3A Owner’s Manual General Safety, Installation, and Operation Instructions It is important to read this document before attempting to use this product. Pay close attention to safety instructions. Appears on the component to indicate the presence of uninsulated, dangerous voltages inside the enclosure – volt- ages that may be sufficient to constitute a risk of shock. - Page 4 VTSP-3A Owner’s Manual Important Safety Instructions Read these instructions Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with a dry cloth. Great care and attention has gone into the materials chosen to produce the product. A gentle wipe with a dry, clean cloth is all that is required to remove any dust.
- Page 5 VTSP-3A Owner’s Manual Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer or sold with the apparatus. When a cart is used, use caution when moving the cart/ apparatus combination to avoid injury or tip over.
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Page 6: Important Safety Instructions
VTSP-3A Owner’s Manual Warning • TO PREVENT FIRE OR SHOCK HAZARD, DO NOT USE THIS PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE • TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE •... -
Page 7: Important (Uk Only) Instructions
If connecting to a BS1363 plug, a 13 amp fuse must be used. WARNING: ANY MODIFICATIONS TO THIS PRODUCT NOT EXPRESSLY APPROVED BY HERRON AUDIO WHO IS THE PARTY RESPON- SIBLE FOR STANDARDS COMPLIANCE COULD VOID THE USER'S AUTHORITY TO OPERATE THIS EQUIPMENT. -
Page 8: Introduction
VTSP-3A Owner’s Manual Welcome! Thank you for your investment in the Herron Audio VTSP-3A Vacuum Tube Stereo Preamplifier, a milestone in high-precision audio playback equipment. The VTSP-3A is a new design, benefiting from insights gained during con- tinuous refinement of the highly-praised and award-winning VTSP-2. The care in engineering and manufacturing of this product anticipates a lifetime of musical enjoyment. -
Page 9: Features
VTSP-1A/166, and VTSP-2. The The VTSP-3A incorporates circuitry to VTSP-3A has a total of 100 vol- switch the phase of the audio signal ume steps, and the precise volume by 180 degrees for absolute polarity level is shown as three digits in the control. -
Page 10: Remote Control
The VTSP-3A has a power-polarity Note: When the invert mode of switch on the back panel for revers- the VTSP-3A is switched, the unit ing the power line polarity connec- automatically mutes before chang- tion to the primary of the power ing modes in order to prevent any transformer. - Page 11 VTSP-3A Owner’s Manual The VTSP-3A has an instant shut- full start-up sequence when power is down circuit that mutes the output restored. If the power outage is brief, upon loss of full line voltage (power the unit will mute and wait 10 to 15 loss).
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Page 12: Design Considerations
VTSP-3A Owner’s Manual Design Considerations • Multifunction remote control • Volume level display (0 - 100) • Unity gain pass-through function-initiated by holding video button • Two gain modes—selected by holding the phono button on the front panel • Class A operation •... -
Page 13: Front Panel Features
• Video control after the unit has gone through the start-up sequence. The VTSP-3A has two gain modes for The balance control provides a system matching. The VTSP-3A gain modes can be switched by holding full range of adjustment for rela- the phono button in for 2 seconds. - Page 14 VTSP-3A Owner’s Manual control in the clockwise direction (to are the result of a D.C. voltage at the the right) decreases the volume in input of the unit causing instanta- the left channel relative to the right neous D.C. level shifts as the volume channel.
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Page 15: Rear Panel Features
VTSP-3A Owner’s Manual or disengaged from the front panel The amber “Tape” light indicates or the remote control. that the tape input has been select- ed. The tape input allows the user The blue “Display” light indicates to loop the selected input (source) display mode. - Page 16 Repeat the process, There are two types of outputs in listening to the same source. the VTSP-3A. The main outputs are intended for connection to high- • Place the AC polarity switch in quality power amplifiers or a multi- the position that sounds best.
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Page 17: Remote Control
• Aux trol the unit if the top of the remote • CD is pointed toward the display • Tuner window of the VTSP-3A. The remote • Video control uses two CR2025 3-volt The volume is controlled with the lithium batteries. -
Page 18: Installation And Operation
6. Power up the source lated area on a firm, stable surface, components. away from equipment that gener- 7. Power up the VTSP-3A by ates alternating magnetic fields switching on the power switch. such as motors, transformers, etc. 8. Once the VTSP-3A is powered... -
Page 19: Power Requirements
VTSP-3A Owner’s Manual Power Requirements yield significant benefits. There may It is recommended that the VTSP-3A also be considerable gains from the stereo preamplifier be connected to upgrade of existing electronics. the same power source (dedicated We recommend the use of high-... -
Page 20: Changing Tubes
Front panel CAUTION When changing tubes, the VTSP-3A should be unplugged and left off for a minimum of 30 minutes prior to opening the unit to insure that hazardous voltages in the power supply have time to discharge before entering the unit. -
Page 21: Technical Specifications
VTSP-3A Owner’s Manual Technical Specifications Frequency response: 1 Hz to beyond 100 kHz, 20 Hz to 20 kHz 1/2 0.1 dB volume at 30 Output impedance: 100 ohms nominal at 1 kHz Input impedance: 100,000 Ohms Gain: 14 dB in Hdb mode, 8 dB in Ldb mode... -
Page 22: Fcc Notice
VTSP-3A Owner’s Manual FCC Notice This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. -
Page 23: Re-Cycling
VTSP-3A Owner’s Manual Re-cycling Correct Disposal of Waste Electrical and Electronic Equipment (WEEE) by User in Private Households in the EU. This symbol on the product or accessories indicates that they must not be disposed of with your household wastes throughout the EU. To prevent pos-...
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