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Unpacking

The Heros is shipped with the vacuum tube istalled. Unpack carefully, keep in mind Heros 

weights 30 kg ! All Thrax Audio shipping boxes have been specially designed to protect 

their contents and special care has been taken to prevent damage under normal 

shipping conditions. Mishandling should be evident upon inspection of the shipping 

container. Carefully remove your new component from its packing and examine it closely 

for signs of shipping damage. We strongly recommend saving all original packing to 

protect your component from damage should you wish to store it or ship it at a later date. 

Installation

• 

Provide adequate ventilation. Do not operate on carpet or any other surface that 

might block air flow. The chassis will become warm in normal use! 

• 

Do not allow the chassis to touch any metal parts, such as the frame of an equipment 

rack. This might create a parallel ground path that could degrade the sound of your system. 

• 

Input connection is via single ended RCA jacks or XLR jacks (which can be from 

balanced or unbalanced sources).  

• 

Connect the input and speaker cables.

• 

Connect the power cable from the power supply to the power amplifier. 

• 

Connect the power supply to the power source indicated on the voltage selector card 

(visible by the main fuse), either 115 or 230 volts AC. The voltage may be select by means 

of the removable 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 sure 

that unit's power switch is set to the "OFF" position before making the final connection. For 

best performance, try to route the power cord away from signal cables. 

• 

Power requirements are approximately 230 watts per channel. Pay close attention to 

power quality, and be aware that different power cords can alter the sound. 

• 

Set the output impedance switch to either “4 ohm” or “8 ohm” to suit your loudspeaker. 

Connect the speaker cables: the black lead goes to “-“, the red lead goes to “+”. For 

further information see Tips : Impedance Matching. 

• 

Set the input type switch to XLR or RCA, to match the source and cables. 

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 

could present a serious, possibly lethal shock. If a tube breaks, unplug the amplifier and 

wait 30 minutes, then remove the tube. Keep flammable objects away from the amplifier.

UNPACKING AND INSTALLATION

5

Содержание Heros

Страница 1: ......

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 11: ...NOTES ...

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