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Related Manuals for Boulder 812
Summary of Contents for Boulder 812
- Page 1 255 South Taylor Avenue Louisville, Co 80027 U.S.A Tel: 303-495-2267 E-mail: sales@boulderamp.com Web: www.boulderamp.com 812 DAC Preampli er Boulder Ampli ers, Inc. 255 S. Taylor Avenue Louisville, CO 80027 (303) 495-2267 www.boulderamp.com BoulderAmpli ersInc @boulderampli ers @BoulderAmps...
- Page 2 About Boulder Ampli ers, Inc. Boulder was founded in 1984 and is the last high-performance audio manufacturer operating in North America to still perform all of its own design, engineering and manufacturing in- house. While this form of production may be more costly than outsourcing, the resulting quality control and reliability of the nished products are never compromised.
- Page 3 Congratulations and thank you for selecting the Boulder 812 DAC Pre-Ampli er for your high- performance sound system. We are certain it will provide you with many years of listening pleasure. e 812 represents the concerted e orts of numerous Boulder designers, engineers, and technicians working to bring you the best audio playback components in the world.
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Page 4: Table Of Contents
....5-14 Connecting the 812 to Home Network Via Ethernet ..5-16 Connecting the 812's Internal WiFi to a Home Network (Wireless) . . 5-17... - Page 5 What is Roon? ....6-25 Connecting to Roon on 812 ....6-25 Setup .
- Page 6 ... . . 8-38 Technical Speci cations 812 DAC Preampli er Dimensions ... . . 8-40 Troubleshooting ....8-41...
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Page 7: Analog Features
812 embodies years of development and is one of the most advanced audio components available. Here are some of the features that set the 812 apart from the competition: Analog Features: • Boulder rotary volume control. (100 dB range) •... -
Page 8: Unpacking And Care
Unpacking and Care e 812 is somewhat heavy and features nely nished casework. Please use care when unpacking, li ing, and installing the 812 to avoid personal injury or damage to the casework and furniture. e 812 weighs 18 lbs. (8.16 kg). -
Page 9: How To Clean The Casework
Be sure to leave access to the AC mains and interconnect cables when installing the 812. Depending on how easy it is to access the back panel of the 812, it may be wise to pre-install the power and interconnect cables before placement. -
Page 10: Connecting The Digital Inputs
Connect each digital source to one of the digital inputs provided on the rear panel of the 812. Later, you will be able to program each input with the source’s name and photo (please see Input Settings on page 28), so you may want to make a list of each source as you connect them. -
Page 11: Connecting The Analog Inputs (Back Panel)
Connecting the Analog Inputs (Back Panel) To get started listening, you only need to connect sources to the 812 as you would any other preampli er. Please take note of the following: e 812 can be connected to many di erent types of analog sources and will provide excellent sound quality for each. -
Page 12: Connecting Headphone Outputs (Front Panel)
Connecting Headphone Outputs (Front Panel) On the front of the 812 there is 4 outputs for di erent types of headphones. Le is the 4 pin XLR headphone output. Top middle Sony Pentaconn headphone output. Bottom middle is the 1/8 inch jack. On the right is the 1/4 inch headphone jack. You can use up to all 4 headphone outputs simultaneously with no fear of harming the ampli er or headphones. -
Page 13: Output Connections On The Back
Output Connections on the back ere is one set of XLR analog output connections on the back of the 812 to go to an ampli er. When used as a preampli er, these outputs can also serve as a xed level output in "DAC Mode."... -
Page 14: Connecting To An Unbalanced Analog Source
Another option for connecting unbalanced sources is the Boulder ABL2 input adapter. It converts a balanced input into an RCA phono input at the rear of the 812. Like the above cable, the negative input of the 812 is connected to the ground of the RCA phono. However, this negative side will then share the shield wire with the chassis ground and will not have the best hum rejection. -
Page 15: Connection To Ac Mains
Connection to AC Mains Your 812 is supplied with an AC mains power cord appropriate for the location where it was purchased. Connect the AC power cord to the Master AC Power Switch connection on the rear panel of the 812 as shown and plug the other end into AC mains. - Page 16 When connecting various sources, make a list of what component is connected to each input so you do not forget the order in which they are connected. You will then be able to name the inputs on the within the Boulder control app. is list will be very helpful at that time.
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Page 17: Connecting The 812 To Home Network Via Ethernet
Standby. You should automatically be connected to your home network. If the unit is ON, when ethernet is connected the 812 will place itself in standby. Once you take it out of standby your 812 should automatically be connected to your home network. -
Page 18: Connecting The 812'S Internal Wifi To A Home Network (Wireless)
812 must be connected in a system connected to speakers or headphones. Turn on the 812 and allow it to boot up. It will go into Standby when boot-up is complete. Turn the 812 ON from the front panel or from the Boulder Controller app. -
Page 19: Connecting An Apple Or Android Mobile Device To The 812
Connecting an Apple or Android Mobile Device to the 812 e 812 can easily be controlled via a mobile device as long as the 812 and the mobile device are on the same network and you have the Boulder Controller app. -
Page 20: Using The App On The 812 Without Wifi Or Ethernet (812 In Wifi Direct)
812 losing Wi-Fi connection/Failover State If the 812 loses connection to a provisioned WiFi a er a period of time it will go into a failover state. e mute LED will be blinking. If you press any button, the unit will continue into "Wi Direct"... -
Page 21: Front Panel Controls
Front Panel Controls e 812 has four buttons on the front panel, they are (L to R) Input Select, Pre Amp / Headphone Output select, Mute, and Standby. e the front panel also has a volume knob with (100) 1 dB steps. -
Page 22: Volume
100 equal steps. To adjust volume use the volume knob on the front panel. Or adjust volume using the Boulder Controller app or an RF remote. (Sold separately. Ask your Boulder dealer for more information) -
Page 23: Mute
Mute It is possible to Mute the 812’s outputs so that they are reduced by a preprogrammed level. e Mute feature allows for temporary volume reduction without losing the original volume setting. For example, engaging the Mute function will attenuate the output to a level suitable for conversation. -
Page 24: Standby
NOTE: Because the 812 greatly reduces power consumption when in Standby mode, it is only necessary to place the unit in Standby when not in use. You do not need to turn the 812 o via the Master AC Switch on the rear panel of the unit. -
Page 25: Bluetooth
To access the Air-Play functionality if you have an Apple product, access Air-Play on your mobile device and select the 812. Once you see the 812 is selected you should be able to play audio to the 812. Once audio is being sent to the 812 it will automatically switch to the "Stream"... -
Page 26: What Is Roon
In the bottom right section of the screen, check the playback bar and make sure the “Zone” (the device Roon will play through) is the 812. If it is unnamed it will show the 812’s serial number. Once the Zone is selected for the 812, select the music you want to listen to, press Play, and enjoy. -
Page 27: Setup
Volume Type: Show in decibels and Show 0 to 100. Show in decibels will show the actual output of the 812 in 100 steps of decibel attenuation from -100 (100 dB of attenuation from maximum output) to 0 (no attenuation from maximum output).Volume readings will be indicated by a negative number, for example -47. -
Page 28: Max Volume
Max Volume adjustment is set. e factory default Max Volume setting for the 812 is 100. Default Volume Setting the default volume means the volume will be set to the number you choose when coming out of standby or turning on the unit. -
Page 29: Mute Level
812 can be temporarily reduced when pressing the mute button. Level setting allows you to set the level of attenuation when the 812 is placed in Mute mode, from a minimum of 6 dB of attenuation to a maximum of 80 dB of attenuation. For example, you... -
Page 30: Balance
Balance e balance slider is in the Settings under the volume drop down. It is to make the audio quieter into the le or right channel. Sliding the slider to the right decreases the audio into the le speaker or headphone. Sliding the slider to the le decreases the audio into the right speaker or headphone. -
Page 31: Input Settings
Input Image. Input Trim Any of the 812’s inputs can be programmed to unity gain. Input Trim allows you to reduce the volume of a selected input relative to all others so that they can be matched to the same level. -
Page 32: Eater Mode/Dac Mode
Mode. e purpose of eater Mode is to allow the 812 to be used in home cinema systems where the master volume control will be in the surround sound processor. When an input has been programmed for eater Mode, the volume controls will be disabled and the volume level must be controlled by the surround sound processor. -
Page 33: Output Settings
DAC Mode DAC mode allows the use of the 812 purely as a DAC that goes directly to a preampli er. In this mode the output is xed line level output on the XLR jacks on the rear of the unit. -
Page 34: System Settings
System Settings e System Settings drop-down menu for the 812 can be accessed by selecting the settings within the Boulder controller app. e System Settings are used to adjust or monitor all of the internal functions of the 812. e following settings can be checked or adjusted from the System... -
Page 35: Restore Wifi Defaults
WiFi. When WiFi connection is lost, the 812 will go into a fail-over state, the Mute LED will be blinking. -
Page 36: Factory Defaults
When the Factory Defaults button is pressed, a pop-up window will appear on the 812’s front panel display that will ask, “Are you sure you wish to set Factory Defaults (the unit will reset)?”... -
Page 37: Input Defaults
“Are you sure you wish to set the Input Defaults?” To reset the 812’s inputs to their original factory settings, press the Yes button. If you do not wish to restore the Input Defaults, press the No button. -
Page 38: Html Programming
Once the page is accessed, the various programming functions can be viewed, changed, and saved. To access the 812’s HTML page, you will need a computer that is connected to the same network as the 812 to enter the 812’s network address into a web browser. -
Page 39: Technical Speci Cations
echnical Speci cations Balanced Inputs 2 x 3-pin XLR Balanced Outputs 1 x 3-pin XLR Maximum Input Level 6.0 Vrms Maximum Output Level 14.0 Vrms THD+N, 2V Output, 2khz 0.0017% (-95.5 dB) Maximum Voltage Gain 19.4 dB Volume Range 100 dB Volume Steps 1.0 dB Frequency Response, 20 Hz to 5kHz... - Page 40 Weights and Dimensions 812 Integrated Chassis: 12” W x 12” D x 3.25” H (12.5 lbs) 30.5 cm W x 30.5 cm D x 8.3 cm H (5.67 kg) Shipping: 24” W x 23” D x 14” H (18 lbs) 61 cm W x 59 cm H x 36 cm H (8.2 kg)
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Page 41: 812 Dac Preampli Er Dimensions
812 DAC Preampli er Dimensions 12.000 12.868 .563 12.000 .910 2.000 8.000 3.630 .505 1.625 8.900 1.475 8-40... -
Page 42: Troubleshooting
Mobile device is on a di erent Connect 812 and mobile No Response to App network than 812 device to the same network 812 is unable to receive WiFi Move to a better location or signals use wired network connection 8-41... -
Page 43: Notes
Notes: 8-42...
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