Boulder-amplifiers 1012 DAC Preamplifier User Manual

CONNECTING A DIGITAL SOURCEThere are four digital inputs to the DSP and D/A Converter section of the 1012. Three inputs are the AES/EBU style. Because

POLARITYPlease note that the 1012 DAC Preamplifier conforms to the standard of pin 2 as the high or hot pin for all analog balanced inputs and outputs

CONNECTING AN UNBALANCED ANALOG SOURCEAlthough the inputs are all of the 3 pin type, an unbalanced source is easily accommodated by using a special ca

CONNECTING A TURNTABLEBalanced inputs are provided for connecting a turntable to the 1012. To avoid hum pickup in the cabling, it is importan

1-8PHONO CABLESCARTRIDGE 1012 PHONO INPUTTURNTABLE CHASSIS3-POS INPUT2-POS INPUT1-POS INPUTCHASSISCARTRIDGE 1012 PHONO INPUTTURNTABLE CHASSIS3-POS INP

CONNECTING TO A BALANCED INPUT AMPLIFIERWith your 1012 DAC Preamplifier’s balanced output driving a balanced input power amplifier, you can ta

CONNECTING TO AN UNBALANCED INPUT AMPLIFIERA special cable is required to make this connection. This cable connects pin 1 to the shield

SETTING THE BOULDERLINK SWITCHSet the Boulderlink MASTER / SLAVE switch to MASTER.For more information on Boulderlink, see the Boulderlink section as

OPERATIONPOWERING UPWith all your connections made, you are ready to listen to your Boulder 1012 DAC Preamplifier.The power LED will cycle

INPUT SELECTIONS To select an analog input, press one of the ANALOG pushbuttons labeled ONE, TWO, THREE or PHONO. The respective input wil

Boulder1012 DAC PreamplifierOwners Manual10/27/03Boulder Amplifiers, Inc.3235 Prairie Ave.Boulder, CO 80301www.boulderamp.comAPPENDIX RECORDINGBOULDER

To select a digital input, press one of the DIGITAL pushbuttons labeled ONE through FOUR. For a few seconds, the input sample rate of the so

VOLUMEBecause the precise feel of the Boulder 1012’s volume control may be different than you are used to, we recommend starting the source device so

BALANCETo change the level balance, press the BALANCE pushbutton. “BALANCE CENTERED” will show in the display. Now, rotating the contr

MUTETo temporarily reduce the volume, press the MUTE pushbutton. “VOLUME MUTED” will show in the display, replacing the volume indica

DISPLAYThe display brightness may be set to any of 4 brightness levels.To change the brightness level, press the DISPLAY pushbutton. “DISPLAY

REMOTE CONTROLBATTERIESA standard small flat blade screwdriver is required to install the three AAA batteries. To install batteries in the remote cont

SOURCE SELECTIONTo select an input (source) press one of the eight buttons on the left side of the remote control in the ANALOG and DIGITAL groups. Yo

POLARITYNOTE: Often polarity is mistakenly called phase. As phase indicates any angle between two channels from 0 to 360 degrees, the correct term of

PROGRAMMINGWhile it is not necessary to ever use any programming functions, you will find they maximize the enjoyment of your Boulder 1012 D

If you chose to assign a name, then “A1 ANALOG INPUT 1” will be shown in the bottom display row with a blinking cursor before the name’s first ch

B o u l d e r 1 0 1 2 D A C P r e a m p l i f i e r R e a r P a n e l

THEATER MODEWhen the 1012 preamplifier is used in a surround sound theater system, it is normally desired to bypass the volume control, thus

INPUT LEVEL CALIBRATIONPressing the same input source number will make “INPUT LEVEL 0.0dB” show in the bottom display row. Rotating the volume control

INPUT BALANCE CALIBRATIONPressing the same input source number will make “INPUT BAL CENTERED” show in the bottom display row. Rotating

PROGRAMMING BY THE DISPLAY BUTTONSeveral special features are programmed by pressing and holding the DISPLAY pushbutton until the display chan

BOULDERLINK IDAgain pressing the DISPLAY pushbutton will make “PROGRAM BOULDER LINK, BOULDER LINK ID 20” show in the display. Rotating the volu

RESET TO FACTORY DEFAULTSShould you wish to have all settings reset to original factory defaults, you may execute a master reset. Normally, this funct

BOULDERLINKBoulderlink is a means of interconnecting most Boulder products so that their microprocessors can talk to each other and pass impor

SETTING BOULDERLINK SWITCHESEvery Boulderlink system must have one “MASTER” component, and only one component can be set to MASTER. Us

POWER UP VIA BOULDERLINKWith each component connected together with a Boulderlink cable, and individually connected to the mains, pressing the

BOULDERLINK MESSAGESEach component in the system can send a message to the 1012 which is then shown on its display. This is particularly helpful in co

TABLE OF CONTENTSGETTING STARTEDIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

“UNIT 1 IS OFFLINE” means that the slave is no longer responding via Boulderlink. Its Boulderlink cable may have become disconnected, or the mains pow

RECORDINGA separated analog output is provided for making recordings or supplying a fixed level output to other system components.CONNECTING

APPENDIX7-11012 AUDIO BLOCK DIAGRAM4DIGITALAUDIORECEIVERMODULEBOULDERCUSTOM DSPDIGITALLOW PASSD/ACONVERTER6 POLEBESSELANALOGLOW PASS100K OHMBALANCEDIN

APPENDIX7-2BOULDER 1012 DAC PREAMPLIFIER SPECIFICATIONSDIGITAL INPUTSDigital Inputs 3 AES/EBU, A

APPENDIX7-3BOULDER 1012 DAC PREAMPLIFIER SPECIFICATIONS (CTD)Maximum Input Level 6.0 VrmsMaximum Output Level

APPENDIX7-4TROUBLESHOOTINGSYMPTOM CAUSE REMEDYNo power indication Preamplifier is not plugged in Connect to an AC outletAnalog source selected, Amber

APPENDIX7-5NOTES

REMOTE CONTROLBatteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RECORDINGConnecting a Recording Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1APPENDIXBlock D

GETTING STARTEDINTRODUCTIONCongratulations on your selection of the Boulder 1012 DAC Preamplifier. We at Boulder Amplifiers are certain it wil

PLACEMENT OF THE 1012 DAC PREAMPLIFIERYour Boulder 1012 DAC Preamplifier is designed to reduce the effects that external magnetic and radio f

CONNECTING TO THE MAINS OUTLETYour 1012 DAC Preamplifier is supplied with a mains cord suitable to the location where it was purchased.A label showi