Tavish Design Minotaur Quick-Start Manual And Owner'S Manual Download | Manualshive

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T

AVISH

D

ESIGN

,

LLC

Made in U.S.A.

Minotaur

Direct-Coupled Hybrid Vacuum Tube Amplifier

Quick-Start Guide and Owner’s Manual

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Summary of Contents for Minotaur

Page 1: ...TAVISH DESIGN LLC Made in U S A Minotaur Direct Coupled Hybrid Vacuum Tube Amplifier Quick Start Guide and Owner s Manual ...

Page 2: ...e 8 4 4 System Status Indication Fault Modes 9 4 5 Wireless Remote Control 9 4 6 Toroidal Transformer 10 4 7 Troubleshooting Grounding Noise Issues 10 5 Maintenance and Vacuum Tube Replacement 11 6 Warranty and Service 13 7 Copyright Trademark and Disclaimers 14 Please take time to read the Quick Start and Safety Considerations and also Section 4 1 otherwise you ll never know about High Bias Mode ...

Page 3: ...d metal equipment rack the antenna may have trouble receiving signals and the remote control range may be limited See section 4 5 if you have this problem 3 Connect signal sources to the rear inputs The Minotaur accepts line level analog signals such as the output of an audio DAC or disk player The standard version has 5 pairs of unbalanced RCA input connectors The balanced version has 2 pairs of ...

Page 4: ...ls 7 About 60 seconds after the ON OFF button is pushed the yellow warmup LED will turn green ready and the output relay will close indicating that the amplifier is ready to use Adjust the volume control after the green ready LED is glowing since the Minotaur won t pass any signal until then The MUTE button is useful for temporarily muting the output without adjusting the volume control 8 The remo...

Page 5: ...o enter the amplifier by placing the unit next to an open window for instance 4 A broken or improperly seated vacuum tube can cause electric shock Do not operate the amplifier if any vacuum tubes have broken glass shells Align the tubes if any are leaning or not fully seated prior to operating the amplifier Vacuum tubes get hot so allow them to cool before handling 5 To avoid electric shock do not...

Page 6: ...ability of vacuum tubes and the high current delivery capability of transistors allowing the tubes and transistors to do what each does best And the Minotaur is direct coupled from the input stage to the output avoiding the use of coupling capacitors at high signal levels where they can cause slow recovery from overload transients 1 The Minotaur is one of very few hybrids on the market to directly...

Page 7: ...full rated power Input Impedance 50 kΩ Output Impedance Damping Factor 40 mΩ at 1 kHz equivalent to a damping factor of 250 Bandwidth 3 Hz 150 kHz 3 dB ref 1 W 1 kHz unbalanced inputs 3 Hz 80 kHz 3dB ref 1W 1 kHz balanced inputs Size 17 2 wide 17 deep 6 high Weight 34 lbs 42 lbs shipping weight Power Consumption 120 V 60 Hz 70 160 W typical 600 W maximum 1 W standby Tube Complement 5751 or 12AX7 x...

Page 8: ...hen it is operated in high bias mode You may notice the cooling fan come on if ambient temperatures are high or ventilation is suboptimal The bias point in normal mode has been selected carefully in both listening tests and measurements as a good compromise between performance and heat production there is minimal improvement with increased bias and most listeners do not notice any difference with ...

Page 9: ...ittle air can circulate the amplifier will get quite warm and may overheat Bias Mode Expected Temperature Rise Above Ambient With Adequate Ventilation Expected Maximum External Cabinet Temperature Assuming 80 F 27 C Ambient Normal 30 35 F 16 19 C 115 F 46 C High 35 40 F 19 22 C 120 F 49 C In high bias mode with adequate ventilation and an 80 F 27 C ambient the external cabinet may reach 120 F 49 C...

Page 10: ...dicates that automatic power off mode has been disabled See Section 4 2 Flashes four times quickly on turn on Off Indicates that automatic power off mode has just been enabled See Section 4 2 Flashes once every second for a minute Off then On after SLEEP occurs In automatic power off mode an indication that the amplifier is about to go to SLEEP because no input signal is detected Apply a signal or...

Page 11: ...p as the core magnetizes This may or may not happen depending on which phase of the AC cycle it starts on The vibration will subside by the end of the warmup sequence 4 7 TROUBLESHOOTING GROUNDING AND NOISE HUM ISSUES The Minotaur produces exceptionally low noise and if hum can be heard from the speaker there is probably ground current induced noise sometimes called a ground loop With the volume c...

Page 12: ...ing 5 2 VACUUM TUBE REPLACEMENT Although the lifetime of any particular tube is impossible to predict vacuum tubes last much longer than most people think Hopefully it will be many years before you have to replace a tube in the Minotaur as long as the amplifier is not left on continuously The system microcontroller monitors output offset voltage which will probably be the first sign that a tube ne...

Page 13: ...ect a voltmeter set to the 1V range or higher to the output turn on the amplifier and wait for it to warm up Adjust the offset trimmer until the voltmeter reads zero then move to a more sensitive scale You should be able to adjust the offset to 0 02V or less although it is normal for the offset to drift within a 0 05V range Allow the amplifier to operate for at least 30 minutes before making the f...

Page 14: ...power surges or acts of God Use of parts not obtained from Tavish Design may void this warranty This warranty is limited to the replacement or repair of this product and not to damage to equipment of other manufacturers Any applicable implied warranties including warranty of merchantability are limited in duration to a period of the express warranty as provided herein beginning with the original d...

Page 15: ...DEMARK AND DISCLAIMERS Copyright Tavish Design LLC 2014 2015 All rights reserved No part of this document may be reproduced by any means or translated to other languages without prior written consent of Tavish Design LLC Tavish Design is a registered trademark of Tavish Design LLC Tavish Design is continuously improving its products and reserves the right to make changes to its products without in...

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