M2TECH JOPLIN MKII User Manual Download Page 9

Page: 9 / 72

JOPLIN M

384

/32bit ANALOG-TO-DIGITAL CONVERTER

REVISION P

A – FEBRUARY 2015

M2Tech

www.m2tech.biz

9.2.18. MGM 78rpm (MGM7)............................................................................. 63

9.2.19. Victor 1938-47 and Victor 1947-52 (VIC3 and VIC4) ............................. 63

9.3. Equalizing tapes: why and when .................................................................... 64

9.3.1. CCIR/IEC for 9.5cm/s and 19cm/s (3¾ ips and 7½ ips) and CCIR/IEC for
38cm/s (15 ips) (IEC1 and IEC3) ....................................................................... 65

9.3.2. NAB for 9.5cm/s (3¾ ips) and NAB for 19cm/s (7½ ips).......................... 65

9.4. Acquiring with equalization ............................................................................. 65

9.5. Interfacing a cartridge or a tape head............................................................. 66

9.6. Recording programs....................................................................................... 66

10. Using a power supply different from the standard one........................................ 69

11. Cleaning the unit ................................................................................................. 69

12. Technical Specifications ..................................................................................... 71

Summary of Contents for JOPLIN MKII

Page 1: ...M2TECH JOPLIN MKII 384KHZ 32BIT ANALOG TO DIGITAL CONVERTER USER MANUAL REV PrA 2 2015...

Page 2: ......

Page 3: ...unauthorized modifications or to misuse or to malfunction of a unit which has been subject to unauthorized modifications This unit is compliant with the following CE regulations when an USB cable les...

Page 4: ...nic Equipment By making sure that this unit is correctly recycled you will help preventing potential damages to environment and human health which could be caused by a wrong treatment of this product...

Page 5: ...ace TWO technology which uses proprietary drivers and asynchronous data transfer along with a sophisticated electronic design JOPLIN MKII features a comprehensive set of output connections which suit...

Page 7: ...uter to use the JOPLIN MKII 35 7 1 Configuring a PC with Windows XP 35 7 1 1 Configuring for Direct Sound with Windows XP 35 7 1 2 Configuring for ASIO with Windows XP 38 7 2 Configuring a PC with Win...

Page 8: ...zation 53 9 1 Why is equalization needed for records 53 9 2 List of phono equalization curves available on the JOPLIN MKII and notes on their usage 58 9 2 1 RIAA 58 9 2 2 AES 59 9 2 3 Angel ANG 59 9 2...

Page 9: ...3 Equalizing tapes why and when 64 9 3 1 CCIR IEC for 9 5cm s and 19cm s 3 ips and 7 ips and CCIR IEC for 38cm s 15 ips IEC1 and IEC3 65 9 3 2 NAB for 9 5cm s 3 ips and NAB for 19cm s 7 ips 65 9 4 Ac...

Page 11: ...dealer Remove the JOPLIN MKII from the foam enclosure and place it onto a stable base far from heat sources Avoid full sunlight on the unit Allow for ample room around the unit for venting The JOPLIN...

Page 13: ...tton is pressed When the unit is operative and the menu is not being accessed press this button to put the unit in standby When accessing the menu press this button to exit the menu without changing t...

Page 14: ...ampling frequency When accessing the menu it indicates the menu item and current value When clipping is reached on the analog input it indicates the status by displaying CLIP When in standby a single...

Page 15: ...TOSLINK OUT USB 2 0 AES EBU OUT S PDIF OUT S PDIF IN MADE IN ITALY S N LEFT IN RIGHT IN 5 6 7 8 9 10 11 GND 12 Figure 2 4 Right channel analog input Connect to right channel of the analog source outpu...

Page 16: ...al digital output Optical output for ToslinkTM cables ToslinkTM connector 10 USB 2 0 output Connect to a PC with Windows or Linux or MacIntosh with an USB 2 0 compliant A B cable USB 2 0 B female conn...

Page 17: ...3 4 1 Standby Push this button to put the unit in standby and to activate it 4 Menu Esc Push this button to access the menu and to exit the menu without changing the current item 4 Menu navigation arr...

Page 18: ...4kHz 32bit ANALOG TO DIGITAL CONVERTER REVISION PRA FEBRUARY 2015 Copyright 2015 M2Tech Srl 18 M2Tech www m2tech biz 4 OK When accessing the menu push this button to update the current item with the d...

Page 19: ...to section 3 Back Panel Description Connect the B plug of a 2 0 USB A B cable to the USB connector Figure 2 10 of the JOPLIN MKII Connect the A plug of the cable to a 2 0 USB port of your computer Co...

Page 20: ...ITAL CONVERTER REVISION PRA FEBRUARY 2015 Copyright 2015 M2Tech Srl 20 M2Tech www m2tech biz Connect the wall adaptor provided with the JOPLIN MKII or any other 15V 500mA power supply to the supply co...

Page 21: ...no native support is available In this case M2Tech provides a driver which needs to be installed prior to access the JOPLIN MKII via USB 6 1 Obtaining the driver The Windows driver for the JOPLIN MKI...

Page 22: ...CONVERTER REVISION PRA FEBRUARY 2015 Copyright 2015 M2Tech Srl 22 M2Tech www m2tech biz Figure 4 Amongst the files extracted is setup exe Double click on its icon to launch it and follow the indicati...

Page 23: ...ht 2015 M2Tech Srl 23 M2Tech www m2tech biz Figure 5 In Windows 7 the installation wizard will ask for authorization to start installation Accept Then the wizard will check for system features At a ce...

Page 24: ...VISION PRA FEBRUARY 2015 Copyright 2015 M2Tech Srl 24 M2Tech www m2tech biz Figure 6 Follow the indications and plug the device in one port then click on Next You ll be asked to choose the installatio...

Page 25: ...PLIN MKII 384kHz 32bit ANALOG TO DIGITAL CONVERTER REVISION PRA FEBRUARY 2015 Copyright 2015 M2Tech Srl 25 M2Tech www m2tech biz Figure 7 The installation process continues showing the progress Figure...

Page 26: ...O DIGITAL CONVERTER REVISION PRA FEBRUARY 2015 Copyright 2015 M2Tech Srl 26 M2Tech www m2tech biz Figure 8 At the end of the installation process the wizard notify the completion Figure 9 Click on Fin...

Page 27: ...PRA FEBRUARY 2015 Copyright 2015 M2Tech Srl 27 M2Tech www m2tech biz Figure 9 To ensure that installation has correctly completed the Device Manager should be checked The JOPLIN MKII will be listed u...

Page 29: ...right 2015 M2Tech Srl 29 M2Tech www m2tech biz 6 3 USB Control Panel A control panel is installed together with the driver which can be used to optimize JOPLIN MKII s USB port performance Figure 11 Mo...

Page 30: ...4 Uninstalling the driver Sometimes it is necessary to uninstall the driver to roll back to a previous version Uninstall is a quite simple procedure Go to the control panel and launch the Application...

Page 31: ...opyright 2015 M2Tech Srl 31 M2Tech www m2tech biz The installation wizard which also handles uninstalling will show up Figure 13 on next page Click on Uninstall to start uninstalling Figure 13 At this...

Page 32: ...BRUARY 2015 Copyright 2015 M2Tech Srl 32 M2Tech www m2tech biz Figure 14 After the uninstalling of all files related to the driver is complete the Next button will be enabled Click on it The final mes...

Page 33: ...Y 2015 Copyright 2015 M2Tech Srl 33 M2Tech www m2tech biz Figure 15 6 5 True plug n play operation with Mac Mac computers with OSX 10 6 4 and later have a native support for audio devices compliant wi...

Page 34: ...OS and ready to use Macs with older OS need update to use the JOPLIN MKII 6 6 True plug n play operation with Linux Linux has a native support for audio devices compliant with USB 2 0 Audio class base...

Page 35: ...ASIO The former is suitable for recorders which can t operate in ASIO mode while the latter can be chosen for better performance with players which can operate in ASIO mode Please consider that bit p...

Page 37: ...IGITAL CONVERTER REVISION PRA FEBRUARY 2015 Copyright 2015 M2Tech Srl 37 M2Tech www m2tech biz Then select the Voice Tab Figure 17 Again select M2Tech Audio 2 0 Input in the drop down menu of the Reco...

Page 38: ...our different ways Direct Sound DS Kernel Streaming KS ASIO and WASAPI DS is suitable for recorders which can t operate in Kernel Streaming mode nor with WASAPI KS can be chosen for better performance...

Page 40: ...2 3 Configuring for ASIO with Windows Vista or Windows 7 As it happens with Kernel Streaming ASIO cannot be directly accessed ASIO must be selected in the specific recorder you choose to use 7 2 4 Co...

Page 43: ...e front panel controls and the remote The menu has a simple one level structure in which all the parameters are accessed sequentially The following parameters can be set Input gain Input choice Sampli...

Page 44: ...ystem resets to the idle state after some seconds from the last operation on the knob 8 2 Navigating the menu by the IR remote The menu is accessed by pressing the Menu Exit button on the remote once...

Page 45: ...uire a gain of 5 1 that is 14dB to achieve the full ADC dynamic As well a phono cartridge with 5mV output level would need 32dB gain value obtained by subtracting the numeric gain of the phono equaliz...

Page 46: ...An asynchronous sample rate converter performs the sampling rate conversion between input and output When such an operation is not desired user needs to set the output sampling frequency to the same v...

Page 47: ...one set by the computer audio control panel or by the recorder program The value set via the menu is restored as soon as the computer is disconnected from the JOPLIN MKII JOPLIN MKII JOPLIN MKII JOPL...

Page 48: ...uld also be considered that the S PDIF AES EBU and Toslink outputs can only transfer 24 bits per channel Thus the 24D value should be chosen to obtain the best audio performance out of the digital out...

Page 49: ...e warped records or the output of a mike preamp or a mixer when recording live in a windy setup Two high pass cut off frequencies are available 16Hz for microgroove LP s and also for modern era stereo...

Page 51: ...to recreate the 38kHz frequency necessary to demodulate the difference information to be blended with the sum information to get the two stereo channels in fact L R L R 2L while L R L R 2R The 19kHz...

Page 53: ...tones have generally low amplitude thus they are likely to be covered by surface noise To solve the above problems an equalization is applied to the signal before sending it to the cutting lathe low f...

Page 54: ...0 6 3 8 0 1 0 0 1 2 5 1 6 0 2 0 0 2 5 0 3 1 5 4 0 0 5 0 0 6 3 0 8 0 0 1 0 0 0 1 2 5 0 1 6 0 0 2 0 0 0 2 5 0 0 3 1 2 5 4 0 0 0 5 0 0 0 6 3 0 0 8 0 0 0 1 0 0 0 0 1 2 5 0 0 1 6 0 0 0 2 0 0 0 0 Hz dB Figu...

Page 55: ...room acoustics but to adapt the one and only phono curve provided with the amp to the different curves of the various LP s Not only LP s are equalized equalization was used for 78rpm too as well with...

Page 56: ...ves were thought for playback systems in which the low frequency limit was relatively high 50 80Hz and for recordings with poor low frequency content setups in which the turntable rumble was not a pro...

Page 57: ...on of the signal of a Decca FFRR record being amplified by a RIAA phono stage 3 2 1 0 1 2 3 4 5 6 7 1 0 1 2 5 1 6 2 0 2 5 3 1 5 4 0 5 0 6 3 8 0 1 0 0 1 2 5 1 6 0 2 0 0 2 5 0 3 1 5 4 0 0 5 0 0 6 3 0 8...

Page 58: ...k search on the Internet will allow you to find that the old record labels were more than the figures above and that sometimes the same record label used different curves during the years Actually it...

Page 59: ...tell whether or not it s been adopted for a certain pressing as the curve is always indicated as RIAA The JOPLIN MKII has not a specific RIAA IEC curve but it can be obtained by selecting RIAA and th...

Page 60: ...rpm microgroove standard 9 2 7 HMV HMV His Master s Voice after the painting with the dog Nipper listening to a gramophone formerly The Gramophone Company is one of the oldest record labels ever It la...

Page 61: ...was founded by commercial radio companies to address many aspects of their activity Amongst these the technical issue related to broadcasting NAB proposed a phono curve to be used for the records whi...

Page 62: ...loped its eq curve 9 2 14 RCA RCA1 RCA2 and RCAO RCA developed many equalization curves to be used with her 45rpm s and later for the microgroove LP s after losing the format war against Columbia so i...

Page 63: ...nglish branch Columbia England developed her own curve for 78rpm s cut in Great Britain 9 2 17 Decca FFRR 78rpm DEC This is the equalization curve for 78rpm used by Decca from which the LP FFRR was la...

Page 64: ...seem to be useless Not always Reel to reel recorders lovers know that most of the machines around built between 60 and the beginning of 80 have generally great transports and heads but barely adequate...

Page 65: ...nds on the standard used to record the tape For the record all commercial pre recorded tapes available on eBay or other auction sites are made using NAB 9 3 2 NAB for 9 5cm s 3 ips and NAB for 19cm s...

Page 66: ...9 different values which cover most MM and MC pick ups requirements Nevertheless certain MC pickups and even tape recorders heads may need different loading Due to the JOPLIN MKII rear panel small siz...

Page 67: ...as automatic tracks cut to divide the acquisition of an LP side into the single tracks and de clicking A much more professional package Cubase is sold by Steinberg http www steinberg net en products...

Page 69: ...with the JOPLIN MKII called VAN DER GRAAF www m2tech biz vandergraaf html It is the best choice to push the JOPLIN MKII performance to the highest level possible We advice users that using a differen...

Page 71: ...input sensitivity 2 55Vrms 0dBFS gain 0dB 1 14mVrms 0dBFS gain 65dB Analog input impedance 47k 47k 100pF 47 k 220pF 16k 1k 500 200 50 10 Analog input gain 0 10 65dB 1dB steps Equalization numeric gain...

Page 72: ...right 2015 M2Tech Srl 72 M2Tech www m2tech biz Supply voltage 15VDC Power consumption 290mA Size 200x50x200mm w x h x d cabinet 200x55x210mm w x h x d with connectors and feet 360x120x260mm w x h x d...

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