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Table of Contents
Summary of Contents for BlueTube Audio BT-4
- Page 1 BlueTube Audio Vacuum Tube Amplifier Owner’s & Operator’s Manual BT-4 BT-6...
- Page 2 SAFETY PRECAUTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO A QUALIFIED SERVICE PERSONNEL. The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage”...
- Page 3 IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openings. 8.
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Page 4: Notes On Use
NOTES ON USE WARNINGS • Avoid high temperatures. • Allow for sufficient heat dispersion when installed enclosed in a rack. • Handle the power cord carefully. • Hold the plug when unplugging the cord. • Keep the unit free from moisture, water, and dust. •... -
Page 5: Installation
INSTALLATION Wall For proper heat dispersion, do not install this unit in a confined space, such as a bookcase or similar enclosure. • A minimum of 24 in. (0.6m) is recommended above the unit. • Do not place any other equipment on this unit. DANGER •... -
Page 6: Table Of Contents
Table of Contents SAFETY PRECAUTIONS NOTES ON USE INSTALLATION Table of Contents Getting Started What’s In the Box Difference Between BT-4 and BT-6 Features First Setup Installing Tubes Cautions on Handling Controls Front Panel Turning Unit On Changing the Volume... - Page 7 Troubleshooting Limited Warranty © 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.
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Page 8: Getting Started
4x 6005W and 2x 5670W Vacuum Tubes (BT-6) Difference Between BT-4 and BT-6 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 combination style tube where the single tube contains the pentode and triode. -
Page 9: Features
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®... -
Page 10: First Setup
First Setup 1. Unbox and verify contents. 2. Switch the voltage on the back to your appropriate voltage (BT-6 only) if unsure about your voltage consult a licensed electrician. 3. Plug in power cable. 4. Connect input devices. 5. Connect speakers. (Do not operate without speakers connected) 6. -
Page 11: Cautions On Handling
Cautions on Handling Before turning the power on Check once again that all connections are correct and that there are no problems with the connection cables. Power is supplied to some of the circuitry even when the unit is set to the OFF mode. -
Page 12: Controls
Controls Front Panel 1. Power Switch - ON/OFF Positions. Blue LED ring indicates power is on. 2. Volume Knob - Controls 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. -
Page 13: Turning Unit On
Turning Unit On Press power button until you hear a click, release. Power button will now be flush and is in the ON position. To turn unit off press power button until you hear a click and release. The power button will be slightly protruding in the OFF position. -
Page 14: Connections
Connections Note: • Do not plug in the power cord until all connections have been completed. • When making connections, also refer to the operating instructions of the other devices being connected. • Be sure to connect the left and right channels properly (left with left, right with right). -
Page 15: Connecting An Audio Device (Rca Cables)
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: Connecting An Audio Device (1/8" Headphone Jack)
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. 11 - Connecting an Audio Device (1/8” Phone Jack) -
Page 17: Connecting A Phono Player Using An External 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 input of Aux 1 or Aux 2 of the BlueTube Audio Amplifier. -
Page 18: Connecting To Bluetooth
Enable this setting. 3. Turn the input selector switch to Bluetooth®. 4. Follow the voice commands. 5. The BlueTube Audio Amplifier will show up as “BT-1A” on your devices menu. 6. You are now ready to listen to audio from your device via Bluetooth®. -
Page 19: Connecting To The Usb Charging Port
Connecting to the USB Charging Port The USB port on the back of the amplifier is for charging devices only and has no ability to transmit data. To use, simply connect your USB cable to the USB port. The smart charging circuitry will take care of feeding the proper current to your device. -
Page 20: Connecting The Speakers
Connecting the Speakers 1. Strip back about 1/2” of the insulation on each of the speaker wires on both ends. 2. Connect the wire with the white stripe to the red binding post on right speaker output. 3. Connect the wire with no stripe to the black binding post on the right speaker output on the back of the amplifier. -
Page 21: For Optimum Speaker Performance
For Optimum Speaker Performance • Use only quality speaker cable. • Speakers should have input impedance of 4-16Ω, DO NOT connect speakers of less than 4Ω. • The higher the db rating of your speakers, the louder the volume will be. NOTE: Higher wattage does not automatically translate to louder volume. -
Page 22: Sub-Woofer Inputs And Controls (Optional)
Sub-woofer Inputs and Controls (optional) INPUT/OUTPUT CONNECTIONS 1. Low-Level Inputs (Left/Right) - RCA style jacks that will accept standard line level inputs from a pre-amp level source. They will accept a stereo signal and internally combine it into mono. (Note: Both left and right input jacks must be connected to the source in order to drive the amplifier to full output). - Page 23 The impedance “seen” by the full-range source amplifier will be that of the connected speakers only. 4. Power input - This unit features a hardwired AC power cable and externally-accessible fuse. It is supplied with an 0.75 A, 250V fuse and USA type polarized 2-pin plug.
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Page 24: Connecting Sub-Woofer To Bluetube Amplifier
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 cable to the Low Level Input on the back of the sub-woofer. 3. -
Page 25: Connecting Headphones
Connecting Headphones To connect your headphones to the BlueTube 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: Audio
Audio Vacuum Tube Break-in Vacuum tubes require a break-in period of approximately 100 hours to reach their optimal performance. After 20 hours you will begin to notice a large difference in the quality of sound over the brand new tubes. Also every single time you turn your BlueTube amplifier on you will notice the sound will gradually improve over the first 20 minutes until the tubes have reached their normal operating temperature. -
Page 27: Care Of Bluetube Products
For warranty see Page 25. Cleaning To keep your BlueTube Audio Products looking like new some periodical cleaning is necessary. For a majority of the time just use a soft clean cotton towel or even better a microfiber dust cloth and simply wipe the wood down to remove any dust. -
Page 28: Additional Information
Sub-woofer 1. Sub-woofer is being overdriven, reduce the sounds distorted gain. On the BlueTube Audio Sub-woofer the recommended position for the gain is between 11:00 and 1:00. Bluetooth® has 1. Due to the nature of Bluetooth® this is an “noise”... - Page 29 Symptom Solution Unit will not 1. Check power cable plug is firmly plugged into power up the back of the amplifier. 2. Check that power cable is firmly plugged into wall outlet. 3. Check the unit on another wall outlet in another room.
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Page 30: Limited Warranty
BlueTube Audio warrants this product and its parts against defects in materials or workmanship for three years labor and one year parts from the original ship date. During this period, BlueTube Audio will repair or replace defective parts with new or reconditioned parts at BlueTube Audio’s option, without charge to you. - Page 31 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 current price.
- Page 32 BlueTube Audio 2001 N Morton Street Franklin IN 46131...
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