BlueTube Audio BT-4 Owner'S/Operator'S Manual Download Page 1 | Manualshive

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BlueTube Audio

Vacuum Tube Amplifier

BT-4

BT-6

Owner’s & Operator’s Manual

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Summary of Contents for BT-4

Page 1: ...BlueTube Audio Vacuum Tube Amplifier BT 4 BT 6 Owner s Operator s Manual ...

Page 2: ...us voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance Hot Surface Mark CAUTION HOT SURFACE DO NOT TOUCH The glass vacuum...

Page 3: ...r A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 11 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 12 O...

Page 4: ...blecloths or curtains Naked flame sources such as lighted candles should not be placed on the unit Do not expose the unit to dripping or splashing fluids Do not place objects filled with liquids such as vases on the unit Do not handle the mains cord with wet hands When the switch is in the OFF position the equipment is not completely switched off from MAINS The equipment shall be installed near th...

Page 5: ...4 in 0 6m is recommended above the unit Do not place any other equipment on this unit DANGER NEVER INSTALL SHELVING ABOVE UNIT UNIT SHOULD NEVER BE INSTALLED IN BOOK CASE OR CONFINED SPACE AT MINIMUM 24 600mm OF EMPTY SPACE IS REQUIRED ABOVE THE UNIT FAILURE TO FOLLOW THESE GUIDELINES COULD RESULT IN FIRE CAUSING BODILY HARM OR DEATH INSTALLATION ...

Page 6: ...ging the Volume 8 Switching Inputs 8 Connections 9 Rear Panel 9 Connecting an Audio Device RCA Cables 10 Connecting an Audio Device 1 8 Headphone Jack 11 Connecting a Phono Player Using an External Preamp 12 Connecting to Bluetooth 13 Connecting to the USB Charging Port 14 Connecting the Speakers 15 For Optimum Speaker Performance 16 Sub woofer Inputs and Controls optional 17 Connecting Sub woofer...

Page 7: ...f Contents 2 2013 BlueTube Audio Inc All rights reserved Reproduction in whole or in part without written permission is prohibited iPod iPhone iPod touch iPod classic iPod nano and iPad are trademarks of Apple Inc Android and Google Play are trademarks of Google Inc Bluetooth is a trademark of Bluetooth SIG Inc All other trademarks are trademarks of their respective owners Features and specificati...

Page 8: ...nel Circuit Class A Push Pull Class A Push Pull Frequency response 20 to 20 000 Hz 20 to 20 000 Hz Total harmonic distortion 1 Watt 1 1 Watt 1 of Tubes 4 6 Voltage 115V 60hz 115 230V 50 60Hz Tubes 4x 10GV8 4x6005W Pentode 2x5670W Triode Min input for full output 5V 5V The only difference between the BT 4 and the BT 6 is the number of tubes and the voltage capabilities The BT 4 takes advantage of a...

Page 9: ... additional audio sources to the BlueTube Audio Amplifier High quality Gold Plated easy connect spring loaded speaker connections Gold Plated spring loaded binding posts allow for a quick and easy connection to a set of BlueTube Audio speakers using the included stranded speaker cable or using banana clips USB charging port to power and charge portable audio players iPhones Android Phones MP3 play...

Page 10: ...e First the old wives tale that you should never touch a vacuum tube is false While you should never touch a hot tube as you may suffer burns touching a cool tube with your bare hands is just fine 1 Take note of the position of the pins on the bottom of the vacuum tube You will notice a section with no pins The pins that are there will correspond with the pin holes on the socket on the amp 2 Using...

Page 11: ...6 hours with the power turned off and wait until the temperature of the amp matches the ambient temperature before using the unit Cautions on using mobile phones Using a mobile phone near this unit may result in noise If that occurs move the mobile phone away from this unit when it is in use Moving the unit Turn off the power and unplug the power cord from the power outlet Next disconnect the conn...

Page 12: ...s volume level turn clockwise to turn the volume up reverse direction to reduce the volume 3 Input Selector Knob Selects which input you want the amp to output Aux 1 and 2 are on the back of the amp The third symbol is for Bluetooth see page 13 for Bluetooth operations 4 Auto switching Headphone Output Jack 1 4 headphone jack When headphones are plugged in amp automatically turns speaker outputs o...

Page 13: ...rge volume knob in the center clockwise to turn the volume up Turn the knob counter clockwise to turn the volume down NOTE You should always have the volume knob in the halfway position when turning the unit on Switching Inputs The input selector knob has 3 stops Turn it to have the arrow pointing at the input you want to use When pointing at the Bluetooth logo the unit will search for connected d...

Page 14: ...g connected Be sure to connect the left and right channels properly left with left right with right Do not bundle power cords together with other cables Doing so can result in noise Rear Panel 1 Sub woofer Output 2 Aux 1 input 3 Aux 2 input 4 USB Charger 5 Right Speaker Output 6 Left Speaker Output 7 115V 230V voltage selector BT 6 only 8 IEC Power connector fuse 9 Cooling vents DO NOT BLOCK ...

Page 15: ... connector to the right output of your device and the white connector to the left output on the your device On the other end of the cable connect the red connector to the right input of Aux 1 or Aux 2 on the BlueTube Audio Amplifier and connect the white connector to the left input of Aux 1 or Aux 2 of the BlueTube Audio Amplifier ...

Page 16: ... on one end and an 1 8 headphone plug on the other connect the headphone plug to your device On the other end of the cable connect the red connector to the right input of Aux 1 or Aux 2 on the BlueTube Audio Amplifier and connect the white connector to the left input of Aux 1 or Aux 2 of the BlueTube Audio Amplifier ...

Page 17: ...Instead follow the directions on connecting an Audio Input Device Using one of the supplied RCA cables connect the red connector to the right output of your pre amp and the white connector to the left output on the your preamp On the other end of the cable connect the red connector to the right input of Aux 1 or Aux 2 on the BlueTube Audio Amplifier and connect the white connector to the left inpu...

Page 18: ...ther As long as your device s Bluetooth is still on it should auto connect to the BlueTube Audio Amplifier After a period of no connection the Bluetooth module will power down Move the selector knob from Bluetooth to Aux 2 then back to Bluetooth to reconnect Bluetooth on any amp especially a vacuum tube amp is a convenience It does not and never will deliver the best audio quality For convenience ...

Page 19: ... smart charging circuitry will take care of feeding the proper current to your device Unit will charge devices up to 1 Amp of current Output will be automatically shut down to protect itself if more than 1 Amp of load is applied When charging a device that is connected to the Amplifier through the device s 1 8 headphone jack some noise could occur at low volumes On most USB cables you will want to...

Page 20: ... right speaker output on the back of the amplifier 4 On the other end of the cable connect the wire with the white stripe to the red binding post on the back of the right speaker 5 Connect the speaker wire with no stripe to the black binding post on the back of the right speaker 6 Repeat on the left side NOTE If speaker connections are reversed black to red and red to black the speakers will still...

Page 21: ...louder the volume will be NOTE Higher wattage does not automatically translate to louder volume Do not touch the speaker cone BlueTube speakers utilize a thin sheet of titanium as the speaker cone and can easily be dented There are no serviceable parts inside the BlueTube Speakers Do not spray polish or cleaner on speakers See care of product section for more information Page 22 Before use remove ...

Page 22: ...ng spring clip type jacks to permit connection with bare wire Allows the user to connect the speaker level output of a full range amplifier to the input of the sub woofer amp using standard speaker wire A mono signal is derived from the stereo input which then feeds the sub woofer amplifier crossover input 3 High Level Outputs Speaker level pass through outputs using spring clip type jacks to perm...

Page 23: ... the control all the way to the left until it clicks 6 Frequency Knob Freq This control is used to establish the highest frequency that the sub woofer will reproduce and has a range between 60 to 180 Hz with a slope of 24 dB per octave If you are using the system for music and your main speakers have good bass capability you could set the control to a fairly low value often between 60 and 100 Hz I...

Page 24: ...uired and may not be included Note Be sure to change the fuse to a 1 5A rating before switching to 230V operation Using a finger or small coin drag the switch down to change to 230V Replace the fuse with the appropriate fuse for your power Connecting Sub woofer to BlueTube Amplifier 1 Using the supplied RCA cables connect the cable to the sub woofer output on the back of the amp 2 Connect the RCA ...

Page 25: ...ueTube Audio Amplifier use headphones with a 1 4 headphone jack or use a 1 8 to 1 4 headphone jack adapter Connect in the port on the front of the amplifier labeled PHONES The unit will automatically switch outputs to the headphones and you will no longer hear sound from the speakers ...

Page 26: ... until the tubes have reached their normal operating temperature Bluetooth technology on a vacuum tube amp is a convenience it does not and never will deliver the best audio quality For convenience use the Bluetooth module for quality use the Aux 1 and Aux 2 inputs Bluetooth compresses the audio for transmission then uncompresses it on the receiving end Depending on the individual you may or may n...

Page 27: ...mply wipe the wood down to remove any dust Occasionally you ll find that you want to use a chemical or cleaner to make the wood shine like new You should consider a furniture polish with a wax base formula such as Original Beeswax Polish This is the only spray polish we recommend Be aware that a spray polish could potentially harm the waxed surface or remove it entirely The reason is that most fur...

Page 28: ...than continue to step 2b 2a Swap speaker connections at the speakers If problem moves to the other speaker then the speaker wire is wired wrong or needs replaced If problem stays with the same speaker then there is a problem with the speaker Contact speaker manufacturer or replace speaker 2b While the amplifier is cold swap the left two tubes three tubes on the BT 6 with the right two tubes three ...

Page 29: ...e the voltage selector switch is displaying the voltage for your country North America should be 115V Most of Europe should be 230V If unsure switch voltage is correct for your country consult a licensed electrician Audio is Distorted Reduce the device supplying the signal or reduce the volume on the BlueTube amplifier Turntable is really quiet 1 Check that you are using a preamp if your turn tabl...

Page 30: ...provided below BlueTube Audio is not liable for any loss cost expense inconvenience or damage that may result from use or inability to use the audio equipment Under no circumstances shall BlueTube Audio be liable for any loss cost expense inconvenience or damage exceeding the purchase price of the audio equipment The warranty and remedies set forth below are exclusive and in lieu of all others ora...

Page 31: ... exchange Parts only You will need to provide a valid credit card number as a deposit guarantee when the RMA number is issued Once approval has been obtained on your credit card the part s will be shipped UPS You will need to ship defective part s back to BlueTube Audio within 15 days to avoid charges to your credit card If such charges are incurred the shipped part s will be billed at the then cu...

Page 32: ...BlueTube Audio 2001 N Morton Street Franklin IN 46131 ...

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