1. DL manuals
  2. M2TECH
  3. Media Converter
  4. JOPLIN MKII
  5. User Manual

M2TECH JOPLIN MKII User Manual

Manual is about: 384KHZ/32BIT ANALOG-TO-DIGITAL CONVERTER

Summary of JOPLIN MKII

  • Page 1

    M2tech joplin mkii 384 k h z /32bit analog-to-digital converter user manual rev. P r a – 2/2015.

  • Page 3

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 3 m2tech www.M2tech.Biz warning! Changes or modifications not authorized by the manufacturer can invalidate the compliance to ce regulations and cause the unit to be no more suitabl...

  • Page 4

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 4 m2tech www.M2tech.Biz the label above, printed on the product case, indicates that the product, when no more usable, can’t be treated as generic garbage, but must be disposed of a...

  • Page 5

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 5 m2tech www.M2tech.Biz dear customer, thank you for purchasing joplin mkii. What you have is a first-rate analog-to-digital converter with many unique features conceived to obtain ...

  • Page 6

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 6 m2tech www.M2tech.Biz.

  • Page 7

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 7 m2tech www.M2tech.Biz index 1. Unpacking and placing the unit............................................................................. 11 2. Front panel .........................

  • Page 8

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 8 m2tech www.M2tech.Biz 8.3.2. Input impedance ...................................................................................... 46 8.3.3. Sampling frequency .....................

  • Page 9

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 9 m2tech www.M2tech.Biz 9.2.18. Mgm 78rpm (mgm7)............................................................................. 63 9.2.19. Victor 1938-47 and victor 1947-52 (vic3 and ...

  • Page 10

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 10 m2tech www.M2tech.Biz.

  • Page 11

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 11 m2tech www.M2tech.Biz 1. Unpacking and placing the unit lay the box on a table and open it by separating it from the external paperwork and removing or cutting the adhesive tape ...

  • Page 12

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 12 m2tech www.M2tech.Biz.

  • Page 13

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 13 m2tech www.M2tech.Biz 2. Front panel 1 2 3 4 figure 1 1) standby/exit button. This button has two function. When in standby, the unit is silent and the display is off. Standby en...

  • Page 14

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 14 m2tech www.M2tech.Biz 3) display. Multifunction six digits led matrix display. During normal operation, it indicates the sampling frequency. When accessing the menu, it indicates...

  • Page 15

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 15 m2tech www.M2tech.Biz 3. Back panel 4 m2tech joplin 384 h 32bit analog-to-digital converter k z dc in 15v dc toslink out usb 2.0 aes/ebu out s/pdif out s/pdif in made in italy s/...

  • Page 16

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 16 m2tech www.M2tech.Biz 7) s/pdif digital output. Generate s/pdif data streams. Rca female connector. 8) s/pdif digital input. Accept s/pdif data streams. Rca female connector. 9) ...

  • Page 17

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 17 m2tech www.M2tech.Biz 4. Remote control ok > > > > menu/esc m2tech 1 2 3 4 1) standby. Push this button to put the unit in standby and to activate it. 4) menu/esc. Push this butt...

  • Page 18

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – 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 displayed value..

  • Page 19

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 19 m2tech www.M2tech.Biz 5. Connecting and powering the unit advice: all connections to other equipment in the system must be done when all equipment are off. Failing to comply to t...

  • Page 20

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – 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 connector (figure 2, 11) of the joplin mkii..

  • Page 21

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 21 m2tech www.M2tech.Biz 6. Driver installation the joplin mkii is usb 2.0 audio compliant. This means that no driver is needed with apple computers, nor with linux-based pc’s. The ...

  • Page 22

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – 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 indications provided by the setup program (figure ...

  • Page 23

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 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...

  • Page 24

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – 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 installation directory (figure 7). Afte...

  • Page 25

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 25 m2tech www.M2tech.Biz figure 7 the installation process continues showing the progress (figure 8)..

  • Page 26

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – 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 “finish” to complete the installation..

  • Page 27

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – 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 under “audio, video and g...

  • Page 28

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 28 m2tech www.M2tech.Biz figure 10

  • Page 29

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 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). ...

  • Page 30

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 30 m2tech www.M2tech.Biz 6.4. 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...

  • Page 31

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 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 th...

  • Page 32

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 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 message will appe...

  • Page 33

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 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 with usb 2.0 au...

  • Page 34

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 34 m2tech www.M2tech.Biz the operating system and the user needs not to install anything: just connect the joplin mkii to your mac and it will be immediately recognized by the os an...

  • Page 35

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 35 m2tech www.M2tech.Biz 7. Configuring the computer to use the joplin mkii joplin mkii joplin mkii joplin mkii 7.1. Configuring a pc with windows xp a pc with windows xp can use th...

  • Page 36

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 36 m2tech www.M2tech.Biz figure 16.

  • Page 37

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – 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 record area. Click on ok button. Figure 17.

  • Page 38

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 38 m2tech www.M2tech.Biz from now on, unless the joplin mkii is disconnected or settings are changed again, joplin mkii is the audio peripheral all audio programs will use when oper...

  • Page 39

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 39 m2tech www.M2tech.Biz figure 18.

  • Page 40

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 40 m2tech www.M2tech.Biz 7.2.2. Configuring for kernel streaming with windows vista or windows 7 as for windows xp, kernel streaming has no standard setting in windows vista and win...

  • Page 41

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 41 m2tech www.M2tech.Biz figure 19.

  • Page 42

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 42 m2tech www.M2tech.Biz.

  • Page 43

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 43 m2tech www.M2tech.Biz 8. Configuring the joplin mkii joplin mkii joplin mkii joplin mkii the joplin mkii is a very versatile unit, with plenty of features to tailor its behaviour...

  • Page 44

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 44 m2tech www.M2tech.Biz on the encoder knob without rotating it will allow to access other parameter, in the order listed above. When the desired parameter is displayed, its value ...

  • Page 45

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 45 m2tech www.M2tech.Biz 8.3. Parameters meaning and choices 8.3.1. Input gain the joplin mkii is provided with an analog front-end which gain can be set to 0db or to any value betw...

  • Page 46

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 46 m2tech www.M2tech.Biz 8.3.2. Input choice the joplin mkii has two inputs: one analog (called “line”) and one coaxial digital (called “coax”). The use of the former is straightfor...

  • Page 47

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 47 m2tech www.M2tech.Biz frequency, the larger the files produced when recording the data out of the adc, but also the higher the sound quality. Thus, the choice of the sampling fre...

  • Page 48

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 48 m2tech www.M2tech.Biz for this reason, the three lower resolution settings are available in two flavours: with dithering and without dithering. The dither is a small random noise...

  • Page 49

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 49 m2tech www.M2tech.Biz 8.3.6. Display dimming the joplin mkii display intensity can be set on 5 different levels. In addition, an automatic dim mode allows for keeping the display...

  • Page 50

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 50 m2tech www.M2tech.Biz figure 20

  • Page 51

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 51 m2tech www.M2tech.Biz 8.3.9. Mpx filter stereo is obtained in fm broadcast by carrying the difference (l-r) information modulated on a 38khz carrier, while the sum information (l...

  • Page 52

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 52 m2tech www.M2tech.Biz figure 21.

  • Page 53

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 53 m2tech www.M2tech.Biz 9. Notes on equalization 9.1. Why is equalization needed for records? When cutting a record, two problems must be faced: the dynamic of the media, which is ...

  • Page 54

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 54 m2tech www.M2tech.Biz riaa playback curve 0 10 20 30 40 50 60 70 10 12 ,5 16 20 25 31 ,5 40 50 63 80 10 0 12 5 16 0 20 0 25 0 31 5 40 0 50 0 63 0 80 0 10 00 12 50 16 00 20 00 25 ...

  • Page 55

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 55 m2tech www.M2tech.Biz 2. The roll-off, that is the value of the high frequency amplification at 10khz during recording and attenuation during playback (16db for riaa); 3. The she...

  • Page 56

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 56 m2tech www.M2tech.Biz no shelving is applied to hmv and capitol curves. In fact, shelving is a relatively recent choice to avoid phono preamps excessively amplifying the turntabl...

  • Page 57

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 57 m2tech www.M2tech.Biz to better understand the effect of using the wrong equalization curve to play a record, figure 24 shows the relative level versus frequency of the music whe...

  • Page 58

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 58 m2tech www.M2tech.Biz the sound of this setup would be much heavier and darker than intended by the recording engineer, with booming low frequencies and muffled highs. A good rec...

  • Page 59

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 59 m2tech www.M2tech.Biz actually the same curve as the rca’s “new orthophonic”, so it can be used to play rca records claiming the use of that curve also. During the years, riaa ma...

  • Page 60

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 60 m2tech www.M2tech.Biz audiophile recordings on coloured heavy weight vinyl some 15 years ago. The label was mainly devoted to jazz and blues. 9.2.5. Capitol (cap) capitol had a l...

  • Page 61

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 61 m2tech www.M2tech.Biz 9.2.9. Mgm the famous entertainment company also produced lp’s during the mono era using her proprietary curve. 9.2.10. Nab nab (national association of bro...

  • Page 62

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 62 m2tech www.M2tech.Biz 9.2.12. Pacific jazz (pacj) jazz was a great business in usa after wwii, so some specialized labels chose to develop their eq curves to press their microgro...

  • Page 63

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 63 m2tech www.M2tech.Biz 9.2.16. Columbia 1925, columbia 1938 and columbia england (co25, co38 and cole) columbia was very active cutting 78rpm’s before introducing the microgroove ...

  • Page 64

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 64 m2tech www.M2tech.Biz 9.3. Equalizing tapes: why and when recording and playback heads used in tape recorders have a frequency response which is strongly non linear and heavily d...

  • Page 65

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 65 m2tech www.M2tech.Biz 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) ccir (comité consultatif international pour la r...

  • Page 66

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 66 m2tech www.M2tech.Biz when an equalization curve is used, then the vu meter is not consistent with the effective risk of saturation, as it indicates the signal downstream the equ...

  • Page 67

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 67 m2tech www.M2tech.Biz order to have a glance of the available features and the possibilities offered by the various programs. A free package for windows is audacity ( http://auda...

  • Page 68

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 68 m2tech www.M2tech.Biz.

  • Page 69

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 69 m2tech www.M2tech.Biz 10. Using a power supply different from the standard one the joplin mkii comes with a 15v/1a wall adapter. This unit has been tested to comply with the jopl...

  • Page 70

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 70 m2tech www.M2tech.Biz.

  • Page 71

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 71 m2tech www.M2tech.Biz 12. Technical specifications sampling frequencies: ...................... 44.1, 48, 88.2, 96, 176.4, 192, 352.8*, 384khz* resolution:..........................

  • Page 72

    Joplin m k ii 384 k h z /32bit analog-to-digital converter revision p r a – february 2015 copyright © 2015, m2tech srl 72 m2tech www.M2tech.Biz supply voltage: ................................. 15v dc power consumption: ......................... 290ma size: .............................................