User Guide - SCV Distribution
Contents
1. 1 with a gentler slope and the passband at 19kHz e Filter 4 Same as 1 with a gentler slope and the passband at 18 5kHz e Filter 5 Same as 1 with a gentler slope and the passband at 18kHz e Filter 6 A halfband type filter with 6dB attenuation at Nyquist frequency e Filter 7 Similar to 0 with a slightly gentler slope filter at 19k e Filter 8 Steepest slope highest bandwidth with low ripple and high attenuation Filter Tables Table of filter characteristics at 48khz 48khz Passband Stopband Passband ripple Stopband attenuation delay Filter 0 20kHz 24kHz 001dB 111dB 73ms Filter 1 20kHz 24kHz 005dB 102dB 63ms Filter 2 19 5kHz 24kHz 004dB 103dB 56ms Filter 3 19kHz 24kHz 005dB 102dB 5 lms Filter 4 18 5kHz 24kHz 003dB 106db 5Oms Filter 5 18kHz 24kHz 001dB 114dB 5Oms Filter 6 21 8kHz 26 3kHz 0002dB 110db 72ms Filter 7 20kHz 24kHz 001dB 110dB 7ms Filter 8 20kHz 24kHz 001dB 110dB 7ms Table of filter characteristics at 44 1khz 44 1khz Passband Stopband Passband ripple Stopband attenuation delay Filter 0 20kHz 22 05kHz 001dB 110dB 1 43ms Filter 1 20kHz 22 05kHz 161dB 71dB 72ms Filter 2 19 5kHz 22 05kHz 046dB 82dB 72ms Filter 3 19kHz 22 05kHz 014dB 92dB 72ms Filter 4 18 5kHz 22 05kHz 005dB 102db 72ms Filter 5 18kHz 22 05kHz 001dB 112dB 72ms Filter 6 20kHz 24kHz 0002dB 111db 78ms Filter 7 19kHz 22kHz 001dB 110dB lms Filter 8 20kHz 22kHz 001dB 110dB 1 5ms Technical Specificatio2. packing materials for any signs of damage in shipment Report any damage to the carrier at once Precautions The Bricasti Design Ml is a rugged device with extensive electrical protection However reasonable precautions applicable to any piece of audio equipment should be observed Always use the correct AC line voltage as set by the manufacturer Refer to the power requirements section of the manual and adhere to any power indications on the rear or bottom of the chassis Using the incorrect AC line voltage can cause damage to your M1 so please check this carefully before applying power e Do not install the M1 in an unventilated rack or directly above any heat producing equipment like power amps tube preamps etc Maximum ambient operating temperature is 40 C Exceeding the maximum ambient temperature may cause the M1 to enter thermal shutdown and stop processing sound as a safety precaution and may cause damage to the internal processors and components To prevent fire or shock hazard do not expose the M1 to rain or moisture Notices In the interest of continued product development Bricasti Design reserves the right to make improvements to this manual and the product it describes at any time and without notice Copyright 2011 Bricasti Design LTD 123 Fells Ave Medford MA 01255 USA 781 306 0420 bricasti com All Rights Reserved This publication is protected by copyright and all rights are reserved Important Safet
3. theory of design and setup and use In the future you can always find the latest version available at our web site www bricasti com Congratulations on the purchase of your new M1 Dual Mono Digital to Analog Converter We at Bricasti Design have set out to design the world s best digital processors and to offer the finest products made for the professional and consumer audio markets Product Overview The Mldigtal to analog converter is a dual mono design there are 2 completely isolated channels a left and right each with its own dedicated linear power supply D A converter DDS clocking and analog circuitry This design insures that analog cross talk is virtually non existent that the necessary power requirements for each channel are well met and isolated from each other and the digital processing is isolated having its own power supply With our twin DAC design the dynamic range for each channel is optimized by using the stereo ADI 1955 D A converter in a mono configuration plus clocking is for each channel done directly at each DAC with a technique called DDS direct digital synthesis which takes clock induced jitter to immeasurable levels Build Quality The M1 is robustly constructed of milled and CNC machined aluminum sections There is no typical bent metal chassis and top cover found on most products All sections of the construction the front and rear panels the sides and even the bottom and top plates start out as solid bloc
4. 4k stop band so there is less attenuation of the noise a gentler one so a compromise filter that might allow some noise to pass Filter 2 This filter starts at 28k pass band and ends for full attenuation or stop band at 48k so good attenuation of noise takes place Technically this is a very good filter for bandwidth and noise removal which is why it was chosen for the V1 15 first release of DSD playback A great source for DSD downloads is www channelclassics com Specs and Performance Audio Performance The typical audio performance spec of the M1 is outstanding Total Harmonic Distortion is an impressive 0 0006 at all frequencies Funct Ch1 Sean 0 loft Frequency Hz Digital Oversampling Filters There are 9 Linear Phase filters and 6 Minimum Phase Filters that can be selected for use in the M1 and they are selected via the filter menu on the front panel These are labeled Linear 0 8 and Minimum 0 5 in the user interface Since the M1 converters use over sampling techniques these filters are calculated at a very high rate for very high precision filter construction Note The the M1 uses delta sigma 8 x oversampling conversion so it is not recommended to up sample the digital audio that is being sent to the M1 Defeat all up sampling features in your media player or CD transport Up sampling the data before the M1 will yield poor results and always use the original source audio bit and sample rates so for exa
5. ashing water and ensure that no objects such as vases are placed on the equipment This apparatus must be earthed This equipment requires the correct AC line voltage as set by the manufacture and is not auto sensing or scaling Use a three wire grounding type line cord like the one supplied with this product Be aware that different operating voltages require the use of different types of line cords and attachment plugs Check the voltage in your area and use the correct type See table below Voltage Line plug standard 110 125V_ UL817 and CSA C22 2 no 42 220 230V CEE 7 page VII SR section 107 2 D1 TEC 83 pg C4 240V BS 1363 of 1984 Specification for 13A fused plugs and switched and unswitched outlet plugs This equipment should be installed near the socket outlet and disconnection of the device should be easily accessible To completely disconnect from AC mains disconnect the power supply cord from the AC receptacle Do not install in a confined space Do not open the unit risk of electrical shock inside Caution You are cautioned that any change or modification not expressly approved in this manual could void your authority to operate this equipment Design Overview There are 4 basic sections to the M1 the digital input section and the left and right analog sections and the front panel Digital Input Section This is located in the center of the unit provides 5 transformer isol
6. ated digital inputs are selectable from the front panel and has its own linear power supply This means that the digital processing section is isolated from the analog sections providing excellent low noise performance and eliminates digital noise from entering the analog chain via the power supplies and ground plane This section features an Analog Devices Sharc DSP that is used to run the front panel and general operations of the M1 to control and synchronize the DDS clocking on each channel and to provide a selection of our own over sampled anti aliasing filters Analog Output Sections Left and Right These are identical and are laid out as mirror images of each other to fit with the over all symmetrical industrial design of the M1 Both are independently powered by their own linear power supply insuring clean double regulated low ripple power and isolation from any digital switching noise from the digital supply Each section has its own Analog Devices 1955 DAC coupled with a dedicated DDS clocking circuit located millimeters away from the DAC assuring extremely low jitter and minimal trace length for the clock signal As both boards have their own clock precise clock synchronization of the left and right boards is handled by the Sharc DSP on the main digital processing board The next stage at the analog out of the converter for the gain and filter sections there is a fully differential analog design with fast high slew rate analog o
7. hat it is actually DSD and unpack the data in our digital signal processor as the original DSD data and send it out to the DAC for conversion to analog To use it all you need is DFF files set the media player to play the files as DoP and the M1 will play them When DSD is received for playback the status and filter displays will read DSD and when it next plays a PCM file it will revert to your last used PCM or DSD filter and display will update accordingly Playback is seamless as any other PCM sample rate change The current version supports both DSD 64 one bit at 64 times 44 1k sample rate and DSD 128 or double that rate DSD 64 is the SACD standard and 99 of all content is released an mastered at this rate There is some content appearing that is DSD 128 or 2x the rate but for the most part you will find DSD 64 as the standard We also implemented the ability to have DSD post noise filtering An artifact of DSD processing is the buildup of ultrasonic noise and with DSD 64 this noise starts at 24khz and rises to peak level at 50k and beyond Ideally this should be removed in the digital domain before any analog stages and we offer a few options Filter 0 This filter has no post filter and allows any ultrasonic noise to pass thru There is a belief that the noise would be filtered by other things in the chain and is in effect benign so we created this option to let the user decide Filter 1 This filter starts at 32k pass band and ends at 6
8. he M1 is set at manufacture Note that the main AC power switch is at the rear and the front panel switch is a low power consumption stand by switch For complete power on of you must cut power with the rear panel switch or from an external AC power on off switch that may be used to power other devices in your setup Quick Connecting the M1 and power up When you first power up the M1 it will come up in AUTO mode for the input select This means that all you need to do is connect the digital output from the source device to one of the appropriate M1 digital inputs The M1 will sense the digital carrier signal and automatically select 1t Note if multiple sources are connected then you will have to manually select inputs per below as Auto will not detect what source is playing audio Operating the M1 There are 6 front panel keys input filter status level display and enter Input select When the M1 first powers on it will default to the STATUS page display on the front panel This will show what input is selected and the sample rate Pressing the INPUT key will take you to input select mode If you turn the knob you will scroll though all inputs The display will flash if the input type displayed is not active If you want to select it press enter Inputs are e 1AES Selects the XLR connector e 2 SPDIF Selects the RCA connector e 3 EIAJ Selects the Toslink connector e 4USB Selects the USB connector e 5 SPDIF Selects the BNC connec
9. ks of aluminum which are precision machined to shape with exact tolerances for a perfect fit These parts are then anodized and the text and markings are laser etched for a clean and enduring look The Sound The intention of the M1 is to provide a state of the art Digital to Analog converter utilizing the best designs and materials that can be found today The D A converter is a very critical part of the digital audio chain after all you have to convert it to analog to hear it and we feel this should be a true as possible in its reconstruction of the original signal The sound of the M1 is intended to be transparent and revealing and fully dynamic This in part is made possible by the lowering the jitter to extremely low levels providing a pure digital signal chain with sample rate converters superior digital filter design coupled to a fast transparent analog signal path with a discreet analog output section and plenty of good clean linear power for optimum analog performance Many hours of listening were done to tune the M1 to an exacting sound with all types of music and with extensive testing done in the studio and in the home We hope you find the M1 to be pleasing and enjoyable to hear and use in the home or as a precision tool for high level reference monitoring for the professional Unpacking and Inspection After unpacking the M1 save all packing materials in the event you ever need to ship the unit Thoroughly inspect the M1 and
10. m SS Design l M1 Dual Mono D A Converter USB User Guide V1 22 release 9 14 Conformity EMC EMI This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference in residential installations Canadian Customers This Class B digital apparatus complies with Canadian ICES 003 Cet appareil numerous de la classe B est conforme a la norme NMB 003 du Canada Certificate Of Conformity Bricasti Design 123 Fells Ave Medford MA USA hereby declares on its own responsibility the following products M1 Dual Channel A D Converter that is covered by this certificate and marked with the CE label conforms to the following standards EN 60065 Safety requirements for mains operated electronic and related apparatus for household and general use EN 55103 1 Product family standard for audio video audiovisual and entertainment lighting control apparatus for professional use Part 1 Emission EN 55103 2 Product family standard for audio video audiovisual and entertainment lighting control apparatus for professional use Part 2 Immunity With reference to the regulations in the following directives 73 23 EEC 89 336 EEC January 2012 Brian S Zolner President Introduction This is a preliminary edition of the M1 user guide covering
11. mple if the source is 44 1k then send this data unprocessed to the Mland let the M1 reconstruct the data correctly You will find despite the close numbers of the specs that they all have very unique and different sound characteristics and you may find one more suitable for different kinds of music than others as well Here is a brief description of them Note that since both types have the identical characteristics that there is one table of characteristics for both filer types Filter Descriptions For filters 0 5 this chart is accurate for both Linear Phase and Minimum Phase filters The 6 Minimum phase filters have the same characteristics as the linear phase filters of the same number allowing easy comparison between filter types As an example Linear 2 has the same basic frequency response characteristics as Minimum 2 but they are based on a different filter construction techniques and yield different results Filter types 6 8 are only available as linear phase For simplicity and as a general guide to their characteristics the list below lists filter but in the M1 menu they are called out as Minimum and Linear e Filter 0 20kHz bandwidth Stop band at Nyquist frequency with low ripple and high attenuation e Filter 1 Low delay filter with full attenuation at Nyquist Frequency e Filter 2 Same as 1 with a gentler slope and the passband at 19 5kHz e Filter 3 Same as
12. nd by switch that will set the M1 in to low power mode and mute the outputs AA FEEESEEEEEE EERE FAA Rear Panel Overview Looking at the rear you will find on the left and right side the analog output sections each with its own balanced and unbalanced outputs and level adjustment set screw In the center input section are the 4 digital audio inputs AES SPDIF 1 and 2 Toslink and USB There is a small jack below the fuse and this is for a trigger input to remotely place the M1 in standby from a pre amp or other system controller The main power on off switch and AC fuse are at the rear note that the front panel and the trigger in are used to set the M1 to stand by Full power on off is done from the rear panel VAA PRA NS in te Setup and Operation AC power and the M1 The AC power is connected at the rear of the unit the filtered AC inlet also has the main power on off switch This filtered inlet helps provide clean AC power to the M1 s power supplies and as well will prevent any digital noise from the M1s digital processing section from going back out the AC inlet to contaminate the mains Take note that because the M1 utilizes linear power supplies care should be taken to use only the power range indicated on the unit other wise damage can occur to the power supplies and other circuits in the M1 Please note and adhere to any voltage indications on the outer box rear panel or chassis all of which will indicate how t
13. ns Digital Inputs Connectors Sample Rates AES SPDIF AUX in Sample Rates USB Jitter Balanced Analog Outputs Connectors Impedance Output Level Range D A Conversion Frequency Response 44 1k Dynamic Range THD N 1k Unbalanced Analog Outputs Connectors Impedance Output level D A Conversion Frequency Response 44 1k Dynamic Range THD N Ik General Specifications EMC Complies with RoHS Complies with Safety Certified to Environment Operating Temperature Storage Temperature General Finish Dimensions Weight Shipping Weight Shipping Dimensions Mains Voltage AC inlet fuse Trigger In Power consumption Warranty parts and labor XLR AES EBU 24 bit Single Wire BNC SPDIF RCA SPDIF USB USB2 44 1 kHz 48 kHz 88 2 kHz 96 kHz 176 4 kHz 192khz 44 1 kHz 48 kHz 88 2 kHz 96 kHz 176 4 kHz 192khz 352 8kHz 384kHz DSD 64fs 128Fs as DoP 8 psec 48k 6psec 96k XLR balanced pin 2 hot 40 ohm 8 dbm to 22 dbm 24 bit delta sigma 8x oversampling 10 hz 20 kHz 0dB 2 dB gt 120dB A Weighted 0006 Odbfs 0004 30dbfs RCA 40 ohm 8 dbm 2V RMS 24 bit delta sigma 8x oversampling 10 hz 20 kHz 2 dB gt 120dB A Weighted 0006 Odbfs 0004 30dbfs EN 55103 1 and EN 55103 2 FCC part 15 Class B EU RoHS Directive 2002 95 EC IEC 60065 EN 55103 2 32 F to 105 F 0 C to 40 C 22 f to 167 F 30 C to 70 C An
14. odized Aluminum 17 x 12 x 2 5 12 lbs 15 lbs 22 x 17 x 7 100 120 220 240 VAC 50 Hz 60 Hz TIA 250V slow blow for all voltages frequencies TRS connector for 5V external trigger 28 Watts 6W standby 2 years 9 Copyright 09 2014 Bricasti Design Ltd 123 Fells Ave Medford MA 01255 USA
15. or off mode Press DISPAY and use the knob to select the brightness of the display press ENTER to set it Selecting OFF will shut the display off after a 20 sec time out leaving one LED dimly lit Pressing any front panel key will wake up the display so you can make adjustments to the M1 and then after a short period of no use it will go to off mode again Filter Pressing FILTER will take you to the filters select mode Here you can select 9 different types of linear phase digital over sampling filters labeled Linear 0 8 and 6 minimum phase filters labeled Minimum 0 5 Press FILTER turn the knob to change press ENTER to select These are loaded immediately with very little delay so the change is very fast allowing for quick comparisons of their effect on the sound 5 e Level The M1 USB includes a digital level control For many applications this feature will allow the M1 to be used directly to the power amp eliminating the need for an analog line pre amp providing perfect level adjustment control for the outputs of the M1 Itis a digital adjustment so it will affect both the balanced and unbalanced outputs exactly the same and insures perfect channel balance at all gain settings Operation is simple press Level and it will display the level in db normally this will be set a Odb Turn the knob and you can cut the level in one db steps Pressing the Level key a second time will set the output to MUTE pressing again will un mute Upon power u
16. p if the M1 was left in any level state other than Odb it will power back at the last setting If you do not use the level adjustment and leave the setting a Odb the unit will power on to the Status page e Enter This sets or selects values in the other menus USB Features On the rear panel you will find the USB 2 type interface and it is based on the latest generation of asynchronous design and supports sample rates up to 384k 24 bit For superior noise performance the interface is electrically isolated from the host computer eliminating any grounding or power induced noise issues that could be transmitted to the M1 from the computer No driver is needed for Macs or Linux but for PC use a driver is necessary and the latest version for Win 8 support can be acquired from our web site and or supplied with the M1 DSD playback and the M1 DSD playback with the M1 is quite simple it is done with DoP and as such can be read with any input but in most common is the USB as there are few disk players that play out DSD as DoP via the AES or SPDIF from the SACD layer DoP or DSD over PCM is the DSD data embedded in a 176 4k 16 bit PCM data stream with the extra 8 bits out of the 24 bits used for identifying that itis DSD not PCM This is true DSD and not PCM conversion When using a computer audio setup the media player will send out the DSD as DoP the M1 will see that as 176 4k pem for DSD 64fs or 352 8k for DSD 128fs read the data header and see t
17. pamps This is followed by 2 transistor designed output buffer sections one balanced and one unbalanced each separately buffered and isolated The balanced output gain is precision adjustable via a back light illuminated set screw near the XLR connector at the rear panel This gain is adjustable from 8 to 23 dbm and can be reference level set to a fraction of a db to match any setup As a default this is set in our test lab at 16 dbm The unbalanced is set to normal hi fi levels of 2V RMS 8dbm by precision resistor values on the board Typical circuit boards in most products are made from FR4 fiber glass But the M1s analog boards are made from a substrate called Arlon This material has excellent very high frequency impedance characteristics and was chosen for use in the M1 to yield an open and clear sound and to allow its very high slew rate audio circuit design to perform at optimal levels Trigger In On the rear panel the M1 has a stereo connector Tip Ring Sleeve for triggering the M1 into standby mode from an external device like a preamp and for optional external remote control with the M1 remote Sleeve is connected to chassis ground Tip Ring is the input The M1 will go into standby when it has a positive 5V or 12V DC voltage between tip ring Front Panel Overview The front panel has a large simple easy to read display an encoder for adjusting and selecting settings 6 keys that are labeled for their use and a power sta
18. tor e AUTO Selects the M1 to auto mode for automatic selection of the input Status The status display key has 5 levels in the menu On first press or on power up it will display input type selected and the running sample rate For PCM this will range from 44 1k to 384K and DSD will simply display DSD for DSD 64fs or DSD 2 for 128fs Pressing the status key from any other state will take you to the input and sample rate display page Pressing STATUS a second time will take you to a display of the actual output sample rate In most cases this will be 352 8k as this is 8 x 44 1k of the CD sample rate If the source is DSD then 2 822 or 5 644 Mhz will be displayed Pressing STATUS a third time will toggle to the digital over tracking display This shows the left and right channel digital overs that have occurred since entering this display page leaving the error counter page by pressing any other key will erase the counters and reset them to 0 Pressing a fourth time will show an internal temperature monitor there are no adjustments as this is just a monitor of internal temps Pressing a fifth time will bring you to the Phase Invert control The M1 is absolute phase meaning that it does not invert the phase With this adjustment you can invert the phase of the signal as some recordings may benefit by this change or correction Normal setting is NON inverted Display This allows you to set the display intensity in 3 levels and set it to a sleep
19. y Instructions Notice Read these instructions Keep these instructions Heed all warnings Follow these instructions Do not use this apparatus near water Clean only with dry cloth Do not block ventilation openings install in accordance with manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers pre amps that produce heat Do not defeat the safety purpose of the polarized or grounded type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade and prong are for your safety If the provided plug does not fit in your outlet consult an electrician for replacement of the obsolete outlet Protect power cord from being walked on or pinched Use only attachments accessories specified by the manufacturer Unplug this apparatus during lightning storms or when unused for long periods of time Refer all servicing to qualified service personnel Service is required when the apparatus has been damaged in any way such as by being dropped exposed to rain liquid being spilled on it or otherwise does not operate normally Service There are no user serviceable parts inside All service must be performed by qualified personnel Warning To reduce the risk of fire or electrical shock do not expose this equipment to dripping or spl
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