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Boulder 860 150 W att Ster eo Power Amplifier Instruction Manual 6/13/07 Boulder Amplifiers, Inc. 3235 Prairie A ve. Boulder , CO 80301 www .boulderamp.com APPENDIX BOULDER LINK REMOTE CONTROL OPERA TION GETTING ST ARTED[...]
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APPENDIX BOULDER LINK REMOTE CONTROL OPERA TION GETTING ST ARTED Boulder 860 Stereo Power Amplifier Rear Panel[...]
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T ABLE OF CONTENTS GETTING ST AR TED Placement of the 860 Ster eo Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Connecting to the Mains Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Connecting a Balanced Source . . . . . . . . . . . . . . . . . . . [...]
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APPENDIX Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 T r oubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Notes . . . . . . . . . . . . . . . . . . . . . . . . . [...]
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1-1 GETTING ST ARTED 1-1 GETTING ST AR TED PLACEMENT OF THE 860 STEREO POWER AMPLIFIER Y our Boulder 860 Stereo Power Amplifier is designed to r educe interference from external magnetic and radio fields (RF). While placement is not critical, known magnetic fields should be avoided. Because the amplifier is heavy , a solid, stable surface should be[...]
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1-2 GETTING ST ARTED CONNECTING TO THE MAINS OUTLET Y our 860 Ster eo Power Amplifier is supplied with a mains cor d suitable for the location where it was purchased. It is constructed of a large enough wire gauge and a cable plug appropriate for the voltage you intend to use. Do not substitute another power cable. The voltage appears on the rear p[...]
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1-3 CONNECTING A BALANCED SOURCE T o fully realize the sonic potential of your 860 Stereo Power Amplifier , use balanced connections whenever possible. Balanced cables r educe interference from magnetic and RF sources to an absolute minimum. Connect your preamplifier or sour ce outputs to the inputs provided. GETTING ST ARTED[...]
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1-4 GETTING ST ARTED CONNECTING AN UNBALANCED SOURCE Although the input connectors are of the three-pin XLR type, an unbalanced sour ce is easily accommodated by using a special cable. This cable has an RCA phono type connector on the source end and a three- pin XLR connector to go to the input of the 860 Stereo Power Amplifier . The negative input[...]
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1-5 GETTING ST ARTED POLARITY Please note that the 860 Ster eo Power Amplifier conforms to the standard of Pin 2 as the high or ”hot” for the balanced inputs. The polarity of the 860 Stereo Power Amplifier is such that a positive- going transition at Pin 2 will produce a positive-going transition at the “+” output terminal. CONNECTING YOUR [...]
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2-1 OPERA TION POWERING UP W ith all your connections made, you are ready to listen to your Boulder 860 Stereo Power Amplifier . T o turn the amplifier on, pr ess the ST ANDBY button on the front panel. The amplifier will perform a warm up cycle and the indicator will alternate between red and amber for 45 seconds. This power up sequence can be ski[...]
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2-2 CLIP DETECTION Clipping of the waveform r esults when any amplifier is driven at too high a level. A clip detection circuit is included in the 860 Stereo Power Amplifier . The indicator will indicate clipping by momentarily turning from amber to red. Both voltage and current modes of clipping will be detected, although generally it is only volt[...]
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2-3 SHOR TED OUTPUT DETECTION If the output of the amplifier becomes shorted, the fr ont panel indicator will turn red and the amplifier will turn off the output stage for about three seconds, then very briefly try to turn on again. If the short still exists, this cycle will repeat until the short circuit is removed. THERMAL PROTECTION A thermal pr[...]
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3-1 REMOTE CONTROL OPERA TION Operation of the Boulder 860 Stereo Power Amplifier by r emote control is possible when connected by a Boulderlink cable to other Boulder pr eamplifiers or CD players. When so connected, the 860 Stereo Power Amplifier will be turned on and off with the other component. 12 VOL T TRIGGER The 860 Stereo Power Amplifier al[...]
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4-1 BOULDERLINK "DAISY CHAIN" TO ALL OTHER SLAVE UNITS BOULDER PRE- AMPLIFIER BOULDER POWER AMPLIFIER BOULDER POWER AMPLIFIER MASTER SLAVE SLAVE BOULDERLINK Boulderlink is a means of interconnecting most Boulder products so that their micropr ocessors can talk to each other and pass important information. Among the key features, Boulderli[...]
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4-2 SETTING BOULDERLINK SWITCHES Every Boulderlink system must have one “MASTER” component, and only one component can be set to MASTER. This is usually the preamplifier . Power amplifiers and other products not having a MASTER/SLA VE switch ar e not eligible to be “MASTER.” SETTING BOULDERLINK ID NUMBERS Every component is requir ed to hav[...]
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4-3 POWER UP VIA BOULDERLINK W ith each component connected together by a Boulderlink cable, and individually connected to the mains, pressing the master ’s ST ANDBY pushbutton will initiate the turn on sequence of all components. The first time a master is powered up, it will search for any “slave” units connected to it. As the master finds [...]
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4-4 BOULDERLINK MESSAGES Each component in the system can send a message to the preamplifier which is then shown on its display . This is particularly helpful in confirming the operating status of each power amplifier in a multiple amplifier system. T ypical messages on an 810 Preamplifier , 1010 Pr eamplifier or 1012 DAC Pr eamplifier ar e as foll[...]
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APPENDIX 5-1 BOULDER 860 STEREO POWER AMPLIFIER SPECIFICA TIONS THD at Continuous Power , 20 to 2KHz 0.0035% THD at Continuous Power , at 20KHz 0.018% Continuous Power , 8 Ω 150W Continuous Power , 4 Ω 150W Peak Power , 8 Ω 150 W Peak Power , 4 Ω 300 W Magnitude Response, 20 to 20KHz +0.00, -0.04 dB Magnitude Response, -3 dB at 0.015Hz, 150kHz [...]
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APPENDIX 5-2 TROUBLESHOOTING SYMPTOM CAUSE REMEDY No power indication Power switch is not on T urn on rear panel power switch Power amplifier is not plugged in Connect to an AC outlet Home circuit breaker is tripped Reset circuit breaker Fuse on rear panel blown Replace fuse Red power indication Low line voltage Have line voltage checked Power supp[...]
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APPENDIX 5-3 NOTES[...]