Bandwidth Audio Aurora One Owner'S Manual Download Page 2

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Aurora One Rev 1.0

WARNING

FAILURE TO READ OWNER’S MANUAL BEFORE FIRST USE CAN

VOID YOUR WARRANTY

CONTAINS LETHAL VOLTAGES

High voltage can be lethal. Do not remove cover while preamplifier is connected to the
Mains power source. For service, contact Bandwidth Audio.

HIGH VACUUM TUBE TEMPERATURES

Vacuum tubes can get extremely hot with bulb temperatures capable of reaching 200

C. Do

not touch or attempt to remove the tubes while they are hot.

DO NOT ENCLOSE

This preamplifier will get warm from use. Make sure to place the equipment in a non-
enclosed area with good ventilation and air flow.

Summary of Contents for Aurora One

Page 1: ...Aurora One Line Preamplifier Buffer Owner s Manual www bandwidthaudio com sales bandwidthaudio com...

Page 2: ...onnected to the Mains power source For service contact Bandwidth Audio HIGH VACUUM TUBE TEMPERATURES Vacuum tubes can get extremely hot with bulb temperatures capable of reaching 200 C Do not touch or...

Page 3: ...Selection 6 2 1 Manual Controlled Gain 7 2 2 Pre Programmed Gain 10 2 1 1 Setting the DIP Switches 11 2 1 2 Gain Setting Examples 13 3 0 Controls and Layout 14 3 1 Front Features 14 3 2 Back Features...

Page 4: ...speakers if this equipment if placed too close to the preamp It is best to have this equipment located far away 1 2 Mains AC Grounding Always share the same AC mains ground circuit with all other aud...

Page 5: ...e with their status After a delay of approximately 25 seconds the Active indicator will illuminate indicating that the preamp is ready for use and music will play 1 4 Input Connections Input connectio...

Page 6: ...2 1 Using the Gain and Bypass toggle switches located on the front to override the pre programmed gain When starting out it is recommended to use the manual controlled gain front toggle switches to he...

Page 7: ...mmed control is selected Up High Gain Mode forced Bypass Toggle Switch Down Bypass Off forced Gain mode always selected Middle Pre programmed control is selected Up Bypass On forced Bypass always on r...

Page 8: ...ver was selected will turn off This is to remind the user that Bypass mode takes priority over the gain setting when Bypass is on The Aurora One will never enter High or Low gain mode Bypass Off When...

Page 9: ...if the Bypass toggle is forced Off or if the Bypass in the pre programmed setup is also off bypass has priority Low Gain When the Gain mode is set to Low Gain the Low Gain LED will illuminate and the...

Page 10: ...rogrammed settings to take effect the Gain and Bypass toggle switches must be in the middle positions selecting pre programmed control Otherwise they will force the preamp into a different mode The go...

Page 11: ...through 6 to the desired position Each switch corresponds to the audio inputs 1 through 6 The left most switch controls input 1 The right most switch controls input 6 There are 2 banks of switches By...

Page 12: ...et to Low Gain the Aurora One will automatically go into Bypass mode regardless of the gain setting whenever input 2 is selected Bypass switches set Off The input programmed to this mode will automati...

Page 13: ...show various pre programmed gain settings for the Aurora One Final Gain Setting Based on Switch Positions Input Mode 1 Low Gain 2 Bypass 3 Bypass 4 Low Gain 5 High Gain 6 Bypass 1 2 3 4 5 6 Bypass On...

Page 14: ...me delay removes the chance of pop or noise on power on During the warmup period the LED is off indicating the unit is held in an automatic mute Approximately 25 seconds after power on the LED will il...

Page 15: ...ypass On Bypass Off or pre programmed bypass selection middle 7 Mute 1 Used to mute the Output 1 of the preamp The switch is active in the up position LED indication will show when mute is active 8 Mu...

Page 16: ...Fuse For 230 240VAC Use only 0 75 Amp Slow Blow Fuse Check serial number tag for correct mains voltage and Fuse type Fuse size is 5x20mm glass cartridge The Maines Fuse in series with the mains input...

Page 17: ...GH for each input 1 through 6 This setting takes effect if Bypass is set OFF for the input of interest 5 Inputs 6 Left Right pairs of RCA inputs 6 Output 2 Left Right pairs of RCA Outputs Outputs are...

Page 18: ...0 2dB Bypass THD N 1V RMS output 0 03 High Gain 0 06 Low Gain 0 01 Bypass THD N 2V RMS output 0 05 High Gain 0 08 Low Gain 0 01 Bypass Frequency Response 3dB down Less than 10Hz and above 175KHz Input...

Page 19: ...d and Matched in House 2x 6H30PI 2x E88CC 6922 Voltage Available for 115 120VAC or 230 240VAC Power Consumption 70 Watts Dimensions Includes faceplate and feet 17 5 x 14 25 x 4 5 Due to the open loop...

Page 20: ...___________________________________________________________ Gain Settings Input 1 _____________ 2 _____________ 3 _____________ 4 _____________ 5 _____________ 6 _____________ Note ___________________...