Popular Post bobfa Posted January 22, 2018 Popular Post Share Posted January 22, 2018 I have recently been working on my audio system to improve sound quality and to reduce the physical size needs of the system. I also wanted to have a Mac as the control computer. To that end I have an UpTone Audio JS-2 powering my Mytek DAC+ and a new 2014 Mac mini. I thought I would post a few pictures and some notes about my install. Thanks to @Superdad for the great products and support! The Mac mini is a 2014 model with 16GB of RAM and a Core I7 processor and 512GB of PCieSSD from Apple. If you have taken an older mini apart there are some subtle differences that are covered in the help from UpTone Audio. I took a bunch of pictures that should help others along with my own visual memory! To start with the 2104 model has a different base that you have to "pop" off instead of twist off: After you remove the bottom and take off the internal cover with the WiFi antenna the fragile antenna cable has to come off : Next you have to remove the fan. The little connector pops up from the board and there are three screws holding the fan down: Next you have to remove the IR and the PCIE connectors: (That PCIE thing looks scary so be careful): Now you have to remove the one screw holding the mother board and tray into the computer. You also need to disconnect the power supply connector from the motherboard. I forgot to get a picture of that but you can see it next to the PCIE connector above. Note that the first time you try to slide the mother board out it is HARD to move. You cannot take it off until the mother board is partly out of the Mac: Now it is time to get the power supply out. There is a single screw holding the power supply to the case. You can see it in the picture below. I did not get a picture of the little catch holding the connector to the case!! Follow the notes and the fixit docs. Also do not lose the rubber boot for the power supply AC connector you will need it if you ever reverse this process: NOTE: I forgot to put the washer and the screw back into the case to hold the frame down so maybe do that NOW!: Now it is time to get the new power supply interface board into the system. You need to hook up the power supply connector and the interface cable to the new fan controller: Check the tape on the bottom of the PS board and slip it carefully into the motherboard mounting frame: Following the interactions put the washer and the nut on the DC jack. I did not put the optional nut on the coax jack: WHEW we are getting close. Plug the power supply cable into the mother board and we are ready to CAREFULLY slide things back together: Since the Website will not let me upload any more files I will continue this with a second post...... -RJF johndoe21ro, Superdad and spin33 1 1 1 My Audio Systems Link to comment
Popular Post bobfa Posted January 22, 2018 Author Popular Post Share Posted January 22, 2018 OK second part! As you are putting the Mac mini back together be really careful of the wires and all the tabs around the motherboard tray. Note also the EMI pads near the power switch feel like they can be damaged: Once the mother board is back into the machine the fan controller needs to be hooked up and the other connections for the IR and the PCIe need to be replaced. Follow the directions on inserting the ribbon cable into the fan controller and hook up the controller to the mother board: Do not forget to install the screw holding the mother board tray in place! The wires to the fan are hooked into a cable control slot and they need to be un-hooked so the little board can be installed properly. Also the ribbon cable will use one of the slots to keep it under control: One of the last items is to put that WiFi antenna connector back on. This is a P.I.T.A. Take care with this as you do not want to break that last thing you are installing: The final re-assembly is to put the shield plate with the WiFi antenna in place and to put the bottom of the computer back on. Be sure to follow the instructions on checking the fan controller to make sure the fan is working. Assuming that you are using the JS-2 hook up both cables and set the switches properly on the JS-2! DONE! --RJF spin33, Superdad, Da Horsey and 1 other 1 2 1 My Audio Systems Link to comment
Superdad Posted January 22, 2018 Share Posted January 22, 2018 Wow Robert! Can't thank you enough for posting the photos of your installation process (and for having given us permission to use some of these in our overdue photo-essay installation guide). So glad that you--and hundreds of others--are enjoying the benefits of eliminating the high-current pulse train that normally controls the fan speed in the Mac mini (this occurs in other computers too, but it is harder to do anything about it for those). It makes a very nice sonic difference to get rid of those 25KHz/0.5A pulses! For those dropping by, MMK ($135) stands for "Mac mini DC-conversion/Linear Fan Controller Kit." Always in stock and available on our web site. Use of our choke-filtered, dual-output, 5-7 amp JS-2 linear power supply is optional, though after installation of an MMK (in a 2010/'11/'12/'14 Mac mini--all the thin ones) one does need to provide an external source of +12VDC--at least 4.5 amps. By the way, the benefits of the Linear Fan Controller upgrade afforded by the MMK can be had even if the external power supply used is an SMPS (switch mode power supply) such as this $26 Mean Well GST90A. The MMK will still provide smooth, variable DC to the fan--controlled by the Mac's OS, thermal sensors, and the fan tachometer--based on the varying cooling needs of the computer. Of course the perforce and SQ will be better with a great linear supply, but we have had a bunch of people do the above while saving for a JS-2. While the installation process may look challenging to some, folks all over the world have performed it without incident. The MMK comes with a toolkit and detailed instructions, and I am always available to assist. Lastly, I will mention that for those who buy a JS-2 and an MMK (at the same time or years apart), we offer complimentary installation/test of the MMK in your Mac mini. All you pay for that service is the round-trip shipping of the computer. A number of people have even had Apple drop-ship a new or refurbished Mac directly to UpTone for this free service. Regards, --Alex C. spin33 1 UpTone Audio LLC Link to comment
bobfa Posted January 23, 2018 Author Share Posted January 23, 2018 Alex, Thanks for the kind words and I did not mean for you to have to write a whole post! You have a lot on your plate! All, I am tracking my progress on my Mac and stereo project on this thread: Note that Alex is VERY right about the SQ here. I am very happy with this progress. I have a lot of work to track over there! --RJF spin33 1 My Audio Systems Link to comment
spin33 Posted January 25, 2018 Share Posted January 25, 2018 Thank you greatly for posting this, @bobfa. Superb work and much appreciated. Timely for for me as I have a somewhat similar 2014 MacMini server system and will be attempting the MMK install within the next few days. (I already have the MMK in hand, and the HDPLEX 200 LPS I’m going to use for power just arrived). I’m following your other thread with interest as well. Regards... jonathan Superdad 1 Roon Nucleus REV B -> DH Labs Mirage USB Cable -> Ayre QB-9 Twenty DAC -> SPL Elector Preamp -> Bryston 2.5 Cubed amp -> Magnepan 1.7i speakers + REL T9x jonathan Link to comment
bobfa Posted January 25, 2018 Author Share Posted January 25, 2018 Just go slow follow the instructions. I would install the fan speed test utility first to make sure it works. That WiFi antenna cable is fussy so take care with that. The directions that Alex has provided are very good and would read them through and checkout the ifixit stuff. I actually had two screens up on my iPad Pro next to where i was working so I could quickly review them Superdad 1 My Audio Systems Link to comment
johndoe21ro Posted June 22, 2018 Share Posted June 22, 2018 Hi! First of all I'm a big fan of UpTone products. These guys are great! Secondly - I've recently installed the MacMini DC Conversion/Linear Fan Controller Kit (MMK) in my Mac Mini Late 2012. I have to mention that in the same time I also installed a brand new SSD (Samsung 860EVO)... Today I hooked up an SMPS (12V, 5A) and was planning to install the MacOS... but something happened. When I plugged in the wall the SMPS the fan in the MacMini already started to spin very fast and noisy (MacMini wasn't turned on). When I've turned the thing on everything seemed to be ok... The USB stick with the OS was recognized but I decided to stop and investigate the FAN problem... Any suggestions? Why did it start to spin (full speed) even if the MacMini was turned off? Triangle Magellan Concerto 2 < AQ Everest < Vitus Audio SS-010 Mk2 < AQ Dragon High Current < AQ WEL XLR < Chord Qutest DAC w UpTone JS-2 & AQ Dragon Source < AQ Diamond USB < Innuos Phoenix USB w AQ Dragon Source < Aurender N100H & AQ Dragon Source < NetGear GS105GE Switch w UpTone LPS1.2 < Supra CAT8 Ethernet < Gryphon PowerZone w AQ NRG-Wild < Stillpoints UltraSS, Ansuz Darkz D-TC & D2, Omicron Harmonic Stabilizer, Gold Evolution SE & Classic < Furutech FT-SWS (R) < Synergistic Research Orange Quantum Fuse < Solid Tech Hybrid < GigaWatt G-16A 2P Circuit Breaker Link to comment
JohnSwenson Posted June 23, 2018 Share Posted June 23, 2018 10 hours ago, johndoe21ro said: Hi! First of all I'm a big fan of UpTone products. These guys are great! Secondly - I've recently installed the MacMini DC Conversion/Linear Fan Controller Kit (MMK) in my Mac Mini Late 2012. I have to mention that in the same time I also installed a brand new SSD (Samsung 860EVO)... Today I hooked up an SMPS (12V, 5A) and was planning to install the MacOS... but something happened. When I plugged in the wall the SMPS the fan in the MacMini already started to spin very fast and noisy (MacMini wasn't turned on). When I've turned the thing on everything seemed to be ok... The USB stick with the OS was recognized but I decided to stop and investigate the FAN problem... Any suggestions? Why did it start to spin (full speed) even if the MacMini was turned off? The fan control coming from the Mac Mini is a series of pulses, these are not voltages coming out of the Mac, they are called a "pull down". The destination (in this case the MMK) has to put a voltage on the wire and the Mac "pulls it down" when it want to be low.The length of time the signal is pulled low determines the speed of the fan. If it mostly low with just a little time high, then the fan speed is low. If it is mostly high and only low for a short time, the fan is fast. When the Mac is turned off or the fan signal from the Mac is not connected, the signal is always high, which means "run the fan as fast as it can go". So the fan running fast when power is applied to the MMK and the Mac is turned off is normal. Note this is not a normal configuration. Normally things are setup so the Mac turns on when the power is applied to the MMK so you would not see this. I'm not a Mac person so I don't know how this is done. John S. johndoe21ro 1 Link to comment
johndoe21ro Posted June 23, 2018 Share Posted June 23, 2018 I appreciate the effort to write down an answer but that doesn't help me much. The fan speed is high and it's high without it even being turned on. When it's on it remains high... Looking for an answer from a Mac Mini owner... P.S. John, you wrote: When the Mac is turned off or the fan signal from the Mac is not connected, the signal is always high, which means "run the fan as fast as it can go". The fan signal from the Mac could be the problem. Is it the white ribbon cable? And, if so, is this a DS4 14 pin power switch ribbon cable? In case I'll damage it trying to stick it better into the connector... Triangle Magellan Concerto 2 < AQ Everest < Vitus Audio SS-010 Mk2 < AQ Dragon High Current < AQ WEL XLR < Chord Qutest DAC w UpTone JS-2 & AQ Dragon Source < AQ Diamond USB < Innuos Phoenix USB w AQ Dragon Source < Aurender N100H & AQ Dragon Source < NetGear GS105GE Switch w UpTone LPS1.2 < Supra CAT8 Ethernet < Gryphon PowerZone w AQ NRG-Wild < Stillpoints UltraSS, Ansuz Darkz D-TC & D2, Omicron Harmonic Stabilizer, Gold Evolution SE & Classic < Furutech FT-SWS (R) < Synergistic Research Orange Quantum Fuse < Solid Tech Hybrid < GigaWatt G-16A 2P Circuit Breaker Link to comment
JohnSwenson Posted June 23, 2018 Share Posted June 23, 2018 12 minutes ago, johndoe21ro said: I appreciate the effort to write down an answer but that doesn't help me much. The fan speed is high and it's high without it even being turned on. When it's on it remains high... Looking for an answer from a Mac Mini owner... P.S. John, you wrote: When the Mac is turned off or the fan signal from the Mac is not connected, the signal is always high, which means "run the fan as fast as it can go". The fan signal from the Mac could be the problem. Is it the white ribbon cable? And, if so, is this a DS4 14 pin power switch ribbon cable? In case I break it down trying to stick it better into the connector... There are three cables involved with the fan: 1: the long white one from the big board to the little board. 2: black from little board to the fan 3: black from little board to the MotherBoard The white cable carries both the signal from the MB and the power to the fan. Since the fan is running this seems to show that #1 and #2 are working, which points at #3 as the problem. So try removing and re-inserting both ends of the #3 cable, this is the black cable that is plugged into the connector on the small board labeled "TO MB". John S. johndoe21ro 1 Link to comment
Superdad Posted June 23, 2018 Share Posted June 23, 2018 19 hours ago, johndoe21ro said: I appreciate the effort to write down an answer but that doesn't help me much. The fan speed is high and it's high without it even being turned on. When it's on it remains high... Looking for an answer from a Mac Mini owner... Sounds like you need to reset the SMC (System Management Controller): https://support.apple.com/en-us/ht201295 Feel free to contact me directly for further assistance. Frankly there is almost nothing that can fail on the MMK. If your machine was working fine with the MMK installed, then your installation was correct. Most likely either your Mac is failing or the external power supply you are using has a problem. The ultimate way to prove that for yourself is to reinstall the original Apple 7.2A SMPS (you did save it and the clip, etc. right?) Keep us posted, --Alex C. UpTone Audio LLC Link to comment
johndoe21ro Posted June 29, 2018 Share Posted June 29, 2018 The culprit was the white ribbon cable! After its re-insertion everything went just fine. Thanks guys! Triangle Magellan Concerto 2 < AQ Everest < Vitus Audio SS-010 Mk2 < AQ Dragon High Current < AQ WEL XLR < Chord Qutest DAC w UpTone JS-2 & AQ Dragon Source < AQ Diamond USB < Innuos Phoenix USB w AQ Dragon Source < Aurender N100H & AQ Dragon Source < NetGear GS105GE Switch w UpTone LPS1.2 < Supra CAT8 Ethernet < Gryphon PowerZone w AQ NRG-Wild < Stillpoints UltraSS, Ansuz Darkz D-TC & D2, Omicron Harmonic Stabilizer, Gold Evolution SE & Classic < Furutech FT-SWS (R) < Synergistic Research Orange Quantum Fuse < Solid Tech Hybrid < GigaWatt G-16A 2P Circuit Breaker Link to comment
AnotherSpin Posted June 29, 2018 Share Posted June 29, 2018 14 minutes ago, johndoe21ro said: The culprit was the white ribbon cable! After its re-insertion everything went just fine. Thanks guys! Nobody cared to check this thread believed you didn't mess up the process of installation. Your notification effort appreciated anyway. Link to comment
Superdad Posted June 30, 2018 Share Posted June 30, 2018 14 hours ago, johndoe21ro said: The culprit was the white ribbon cable! After its re-insertion everything went just fine. That’s great! Thank for letting us know you figured it out. Somehow we had the impression that you had had the MMK installed and that your machine was running fine with it for a while before the problem started. But rereading your original post it does seem this was a new installation that you just recently made. Had I not made the wrong assumption I would have suggested you check the MMK cable connections. Please let us know if you need any further assistance. johndoe21ro 1 UpTone Audio LLC Link to comment
musicguy Posted July 12, 2019 Share Posted July 12, 2019 I just did my MMK install. A big thank you for this forum very helpful. 1st way better sound, need i say more. 2nd. How can i test my fan to make sure everything is working correct. musicguy Link to comment
Superdad Posted July 12, 2019 Share Posted July 12, 2019 10 minutes ago, musicguy said: I just did my MMK install. A big thank you for this forum very helpful. 1st way better sound, need i say more. 2nd. How can i test my fan to make sure everything is working correct. musicguy First: Congratulations on your successful installation of our popular Mac mini DC-conversion/Linear Fan Controller Kit (MMK)! You should have received an addendum e-mail from us which contained--among other pre-install hints--information and links for testing operation of the fan (still under automatic control of the operating system and Mac mini thermal sensors). Here is the relevances excerpt from that e-mail: Upon first power up after you complete the installation of the MMK (or maybe before you even start), please download the free fan speed/temperature utility called "Macs Fan Control” from http://www.crystalidea.com/macs-fan-control and launch it to be sure that your Mac mini fan is running. It should report at least 1800 rpm, and if you double-click on the highlighted Exhaust fan you can then select "Constant RPM value" and run it up to a high speed to listen and confirm fan control (you have to click OKAY to have the speed change take effect, and be sure to set it back to automatic afterwards so the computer and OS X will adjust the fan as needed).Alternatively, you can leave the cover off during first power-up after MMK installation and use a flashlight to confirm the fan is running (it is all black in there so it can be hard to tell). If for some reason the fan is not running, then please shut down your Mac mini and recheck all connections.Another popular free utility for fan control and temperature reporting is smcFanControl from http://www.eidac.de. That is what I had been using, but I am recommending "Macs Fan Control" because it reports the fan speed the moment you launch it. Please let us know if you need any further assistance. We are always here to help. Enjoy your upgraded Mac mini. And if you did not purchase it with our acclaimed JS-2 choke-filtered, dual-output, 5~7.4 amp linear power supply, perhaps you will consider upgrading to one in the future. Thanks and regards, --Alex C. UpTone Audio LLC Link to comment
musicguy Posted July 12, 2019 Share Posted July 12, 2019 Thank you uptone! For supporting this forum and The MMK. musicguy Superdad 1 Link to comment
musicguy Posted July 13, 2019 Share Posted July 13, 2019 So, I am completely blown away how good the mod works. Its like rediscovering my music again. And I dont even have a js-2 yet. I plan on getting one for sure. musicguy Superdad 1 Link to comment
Andy-HandyHifi Posted June 8, 2021 Share Posted June 8, 2021 I have ALMOST completed this modification successfully, (after having to purchase a separate tool kit as the 2014 needs a T5 Torx to remove the wireless card, which I am not sure really needed to be done looking at it now, but it is what it is and here we are) I have watched the rebuilt on youtube and it looks so EASY but in my photo below I have circled my problem, and try as I might, I just CANNOT get these to snap back on in place.. I removed them properly with a spudger. I am THIS close to completing this mod and I have a Proforma LPS just waiting for to power it up Link to comment
Superdad Posted June 9, 2021 Share Posted June 9, 2021 3 hours ago, Andy-HandyHifi said: I have ALMOST completed this modification successfully, (after having to purchase a separate tool kit as the 2014 needs a T5 Torx to remove the wireless card, which I am not sure really needed to be done looking at it now, but it is what it is and here we are) I have watched the rebuilt on youtube and it looks so EASY but in my photo below I have circled my problem, and try as I might, I just CANNOT get these to snap back on in place.. I removed them properly with a spudger. I am THIS close to completing this mod and I have a Proforma LPS just waiting for to power it up Oooh... There was no need to remove the wireless card for the install. There is a chance that the uFl coaxial connectors got bent inside. Can you unplug them and take a close-up photo of the contacts on the ends of the cable? UpTone Audio LLC Link to comment
Popular Post Andy-HandyHifi Posted June 9, 2021 Popular Post Share Posted June 9, 2021 49 minutes ago, Superdad said: Oooh... There was no need to remove the wireless card for the install. There is a chance that the uFl coaxial connectors got bent inside. Can you unplug them and take a close-up photo of the contacts on the ends of the cable? No problems. They are a PAIN to get back on. I see now that I only needed to do the cable for the Wifi. So I go some good practice doing all three. NOW I get why there was not a T5 Torx in the kit haha... Everything is working perfectly after I finally got all reassembled. First time fire it up.... perfect. Bluetooth, Wifi, everything fully functional on the new LPS I am so STOKED I did it on first attempt and managed to rectify my only mistake and learn at the same time. It takes a special technique to reattach those tiny coaxials. In the end mine involved both tweezers and a Spudger. Superdad and Andy-HandyHifi 2 Link to comment
Andy-HandyHifi Posted June 9, 2021 Share Posted June 9, 2021 Using a ZeroZone custom LPS that DWARFS the Mac Mini... haha... Tim Taylor Tool Time here... l love it. musicguy 1 Link to comment
Andy-HandyHifi Posted June 9, 2021 Share Posted June 9, 2021 On 7/13/2019 at 12:50 PM, musicguy said: So, I am completely blown away how good the mod works. Its like rediscovering my music again. And I dont even have a js-2 yet. I plan on getting one for sure. musicguy exactly my first thoughts. How can the power supply on the source make this much difference??? USB is galvanically isolated, Power on DAC/AMP and PC on different grounds potentials. But SOMETHING is different. I can't think of why. I just know what I hear. Wow. Superdad 1 Link to comment
Andy-HandyHifi Posted June 9, 2021 Share Posted June 9, 2021 Just dowloaded a software fan monitor and its chugging along at 1800 rpm with temps around 40 dec. Cel., Perfect. All working, working great, sounding amazing. Still has to be one the best 'bang for the buck' upgrades I have ever done. Turns the Mac Mini into a truly respectable audiophile music server. Link to comment
jamesg11 Posted June 9, 2021 Share Posted June 9, 2021 Yes, my old Uptoned 2011 macmini was a great step up ... now just in storage (what could I use it for?). Wonder what benefit a similar set of mods for my current M1 macmini would deliver? NAA, ER etc have no doubt obviated the need ... macmini M1>ethernet / elgar iso tran(2.5kVa, .0005pfd)>consonance pw-3 boards>ghent ethernet(et linkway cat8 jssg360)>etherRegen(js-2)>ghent ethernet(et linkway cat8 jssg360) >ultraRendu (clones lpsu>lps1.2)>curious regen link>rme adi-2 dac(js-2)>cawsey cables>naquadria sp2 passive pre> 1.naquadria lucien mkII.5 power>elac fs249be + elac 4pi plus.2> 2.perreaux9000b(mods)>2x naquadria 12” passive subs. Link to comment
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