Thrax Audio Heros Operating Manual Download Page 1 | Manualshive

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Summary of Contents for Heros

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Page 2: ... IN A SECURE LOCATION FROM WHICH IT CAN NOT FALL OR TIP OVER WARNING Do not allow anything to touch the tubes in normal operation they become very hot Take care to keep everyone especially children and pets from being able to reach and touch the tubes which become extremely hot and may cause serious injury Never touch a tube if the glass is broken The internal structures carry high voltage and cou...

Page 3: ...ns 3 2 Introduction 4 3 Specification 4 4 Unpacking and Installation Unpacking 5 Installation 5 6 Front Panel 6 7 Back Panel Inputs 6 Speaker outputs 7 AC Fuse 7 8 Operation 8 9 Tips Impedance Matching Tube replacement 9 CONTENTS 2 ...

Page 4: ...y purpose of the grounding type plug A grounding type plug has two blades and a third grounding prong The third prong is provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet POWER CORD PROTECTION Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point wher...

Page 5: ...nside you get Separate constant current PSU for the input tube 5687 double triode and separate PSU for the output stage The input driver stage is a differential triode stage with grounded cathodes The output stage is a pair of Power J FET transistors operating in a push pull output transformer The case is made of plates machined solid aircraft grade aluminium INTRODUCTION Inputs 1 unbalanced RCA c...

Page 6: ...able selector card located behind the fuse in the power connectors Remove the cards and reinstall so that the desired voltage may be read be certain to change the fuse to the correct value Connect the power supply to the power source indicated on the rear panel Avoid power conditioners that float the ground pin ALWAYS connect power cord to component before plugging it into an AC outlet and make su...

Page 7: ...for balanced connection to a pre amplifier The INPUT SELECT switch should be set to the XLR left position RCA single ended connection normally is made to the RCA jack The INPUT SELECT switch is set to RCA right position NOTE Do not remove and connect input cables or speaker cables while is amplifier is running Doing so risks damage to your loudspeakers or the amplifier Do not operate the amplifier...

Page 8: ... short circuit The Common or Ground lead connects to the black jack The Hot lead goes to red jacks Bare wires and spade plugs must be tighten by rotating the ratchet screw clockwise A C Fuses and Mains switch There are fuses located in the IEC power connector on the back panel For 220 volt operation 4 amperes slow blow fuses are used For 110 volt operation the fuses should be 8 amperes If power do...

Page 9: ...sources first than preamplifiers processors and last the power amplifier When switching off go backwards start with the power amp and go further to the sources As with all high fidelity products the sound characteristic changes somewhat as it warms up Best sound will be achieved after about 15 minutes of operation Any time that the Heros power amplifier has not been used for a few weeks the sound ...

Page 10: ...Heros comes with the tube pre installed Tube s working time is approximately 2 000 hours When tubes replacement is due we strongly advise you to order replacement tubes from your Thrax Audio dealers before the sound quality starts to deteriorate Before replacing the tube all power must be turned off Unplug the power cord from the wall and remove all audio interconnect cables Wait 15 minutes before...

Page 11: ...NOTES ...

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