BMC Phono MCCI, Owner'S Manual

Page 1: ...Phono MCCI Owner s Manual B M C audio GmbH http www bmc audio com 1403 EN ...

Page 2: ...onearm with 5 Pin Tiffany Jack Turntable Tonearm with RCA Jack Turntable Tonearm with XLR Jack Settings Inside Phono MCCI Detailed Jumper Settings Troubleshooting Maintainance Service Important Safety Information General Safety Precautions CE FCC declaration Recycling Technical Specifications Quick Start 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 B M C AUDIO GmbH WWW BMC AUDIO COM INFO BMC AUD...

Page 3: ...cartridges The outstanding signal to noise ratio allows the match with very low output cartridges without the need of a transformer Due to the mandatory earth free operation mode there could be some incompatibilities with unbalanced interconnections Take care of a truly earth free interconnection as described within this manual You may ask your retailer for help in case of any question Due to the ...

Page 4: ...R Power on the units by turning right the wheel Power off the unit by turning left the wheel DIM Reduce the illumination intensity MUTE Press the knob for muting the output This function is recommended when using the tonearm lift ...

Page 5: ...d the tonearm The shield must NOT be connected to any of the four signal lines OUTPUT XLR RCA Balanced XLR unbalanced RCA Output Balanced and unbalanced line level output terminals for connection to the B M C DAC preamp module an integrated amplifier or a preamplifier XLR interconnection should always be the preference AC LINE AC Line Terminal For connecting the AC power line using the included po...

Page 6: ... values but a trend can be clearly seen as long as both electrical parameters are available The output voltage of a pickup as well as its internal resistance Based on Ohm s law the signal current can be calculated V Rmc Rin I V defined output voltage Rmc internal resistance of the MC cartridge Rin input resistance of the phono amplifier I signal current On the low side some MCs deliver 10μA or les...

Page 7: ...e any noise by interferences Twisted cables are mandatory for this type of connection The CI input is not very sensitive to capacitive noise and also has a high rejection of common mode noise The cable should generally be low inductive for CI connections In case of any trouble you better use the above suggestion In case of making a testing adaptor from RCA to XLR following point should be consider...

Page 8: ... Never connect pin 1 and 2 from the XLR connector Never connect any of the four signal lines to pin 1 Whenever using a coaxial interconnection take care the shields are never connected to the turntable chassis or the tonearm Whenever using a coaxial interconnection take care the shields from left and right channel are never connected to each other Cartridges with common ground do not match for the...

Page 9: ...elding a more open sound may arise In many cases an existing internally balanced tonearmcable with RCA connectors can be easily converted to balanced circuit with XLR connectors according to the pattern shown here The shield should be connected only to pin 1 if there is not any connection to any of the inner conductors Warning Rega tonearms with no separate ground cables usually have a connection ...

Page 10: ... be noted particularly that the tonearm ground is connected from the middle pin of the Tiffany plug only to ONE channel XLR pin 1 otherwise risking hum noise due to a ground loop The shield if any should however be separately connected to pin 1 of the XLR connector for each channel ...

Page 11: ...as a shield is in place it can be connected to pin 1 of the XLR connector but not to thr RCA plug Since the ground contact and the metal case of the RCA plug leads the inverted signal it is sensitive to touch It is therefore recommended isolating the RCA plugs with shrinking tube Reminder RCA in this case has no ground Pin and outside connector are signal connections A 2 pin RCA connection is bala...

Page 12: ...anced connection it does not need any ground connection just non inverting and inverting signals As far as a shield is in place it may be connected to pin 1 of the XLR connection at one end only The PHONO MCCI end If there is need for a ground connection from tonearm to PHONO MCCI only connect it to XLR pin 1 of ONE channel Thus avoiding hum noise due to ground loops No connection of any of the 4 ...

Page 13: ... your qualified service personell for reference The following instruction is addressed to professionals only Attention Power OFF the unit and unplug the power cable prior to any change of jumper settings Please use the enclosed jumpers In case of loss Jumpers from a computer shop will be fine Exclusively the jumper combinations according to the following description must be used ...

Page 14: ...auses a soft roll off of the top end frequencies RIAA with Neumann Option Jumper on JP9 JP10 JP11 JP12 open RIAA without Neumann Option Jumper on JP11 JP12 JP9 JP10 open ORANGE Subsonic Filter Due to the cartridge tonearm resonance in some cases a substancial resonance peak in the infrasonic frequency range may degrade the sound quality and in worst case cause damages to the spekers or amplifiers ...

Page 15: ...problem If you suspect a malfunction of the unit please check the following chart before calling your dealer No power Check the connection at both ends of the AC power cord Make sure there is power at the wall outlet Check the power switch position Check if the fuse is not broken No sound Check the connection to the turntable Check the connection to the amplifier Check the function input selection...

Page 16: ...hock do not remove the cover or rear panel It does not contain any user serviceable parts Refer servicing to qualified service personnel Any Fuse within the phono MCCI should just be replaced by qualified service personell Refer servicing to qualified service personnel only WARNING TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE Power Cord The units is equipped wit...

Page 17: ...CI s casing 11 Only use attachments accessories specified by the manufacturer 12 Only use the unit with a cart stand tripod bracket or table specified by the manufacturer or sold with the unit If using a cart exercise caution when moving the cart unit combination to avoid injury from it tipping over 13 Unplug the unit during lightning storms or when leaving it unused for extended periods of time 1...

Page 18: ...ces according to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause interference to radio communications There is no guarantee that interference will not occur in ...

Page 19: ...19 Technical Specifications 2 A 4 6 49 0 0 4 9 0 4 9 F F 4 B C 4 5 8 4 D D 6 6 6 6 6 B4 6 D E F G 0 H 2 0 2 2 2 I 0 2 2 J K H 2 4 6 ...

Page 20: ... of the Phono MCCI is technically different to standard phono preamps A wrong connection may damage the MC cartridge or the Phono MCCI itself Damages which origin from such mishandling are excluded from warranty Take care that there is no connection from any cartridge pin neither to the tonearm nor to the chassis nor in between the 4 signal lines Find a detailed description and illustration inside...