Batty Posted November 8, 2018 Share Posted November 8, 2018 https://www.diyaudio.com/forums/pass-labs/321925-diyaudio-watt-m2x.html Just bought the PCBs for this and the power supply. $70 US. Just wondering if anyone else has tried it or even heard the Pass Labs M2 (this is an authorised clone). I have built the WHAMMY headphone amp which I plan to use as the pre for this, alternately I have a Meridian 101 pre. I'm not going to rush this, planning buying a few bits here and there each month to spread the cost. 1 Link to comment Share on other sites More sharing options...
kranky Posted November 8, 2018 Share Posted November 8, 2018 Steve, I have the Tea Bag version of the M2 and am Very Happy with the amp, I'm using Linear Systems JFETs and dual Mono power supply. Marks Version has the different daughter boards for the front end many more choices to try. Happy Building!! Regards Steve. Link to comment Share on other sites More sharing options...
Full Range Posted November 8, 2018 Share Posted November 8, 2018 I got the email yesterday As @kranky I also have the Teabag version and love it However I will purchase the boards and work my way slowly to populating the boards with the required components Some components for the original Pass design are hard to source Link to comment Share on other sites More sharing options...
Batty Posted November 9, 2018 Author Share Posted November 9, 2018 (edited) The case alone is $339 US The transformers are made to order and work out about $8 each plus $56 US delivery. I think this will work out around the $1k mark. Edited January 17, 2019 by Batty Link to comment Share on other sites More sharing options...
Full Range Posted November 9, 2018 Share Posted November 9, 2018 @Batty I used the large 5U deluxe case, and cost about that But you need to factor in the exchange rate + GST So that amount almost doubles While you are at it get the rear panel connector set from them However just about all of the components used in my M2 build were military spec or higher audio quality And that bumped the price up as well The rewards are in the sound the amp delivered - very nice and well matched to my speakers Link to comment Share on other sites More sharing options...
Batty Posted November 9, 2018 Author Share Posted November 9, 2018 My speakers are 92dB sensitivity and a pretty benign load, so should be fine. I am looking at the 4U deluxe case, rear connector set and maybe some risers. Link to comment Share on other sites More sharing options...
kranky Posted November 9, 2018 Share Posted November 9, 2018 Steve, Have you looked at making your own amp case. 2x Conrad heat sinks MF35 - 151 from Melbourne 2x Ally sheets 375mm x 310mm x 3mm 2x 20mm timber for front and back panel 151mm x 390mm All up around $200 AU including RCA sockets , power switch mains input , speaker terminals plus your time. I have made several amps using this method. M2 , F6 , MOFO , AKSA Alpha 20. Just another option. Regards Steve. 4 Link to comment Share on other sites More sharing options...
Batty Posted November 9, 2018 Author Share Posted November 9, 2018 (edited) Do you have links to those? I'm thinking of selling the LP12 to fund this. Edited November 9, 2018 by Batty Link to comment Share on other sites More sharing options...
kranky Posted November 9, 2018 Share Posted November 9, 2018 Steve, I buy the heat sinks from Conrad Heatsinks in Melbourne and are cast in Melbourne ( They also cast pulleys ) The top cover is security screen which is around $100 for a 620 x 2100 sheet , my local glazier got this in for me and still have enough to make quite a few more amps. The base is a piece of 3mm ally sheet with 10mm holes drilled underneath for air circulation, I did find a leftover piece of ally sheet with 15mm holes punched in it at the local sheet metal fabrication place for $50 enough to make half a dozen bases. RCA jacks are Neutrik from Mouser $7 each (screw mount) AC inlets with fuse holder and switch i purchased from RS online $10 each. Speaker posts from Alliexpress $1 each pair. For the front and back cover i use what ever scrap timber i have on hand in the picture the timber is Tasmanian Myrtle recycled but a strip of plywood also works. And your time to drill and tap holes , not as professional looking as a purchased case but Still works out a lot cheaper than purchasing a case and you can build more amps. Regards Steve. 2 Link to comment Share on other sites More sharing options...
Batty Posted November 9, 2018 Author Share Posted November 9, 2018 Wow, great info, thanks. Link to comment Share on other sites More sharing options...
Batty Posted November 9, 2018 Author Share Posted November 9, 2018 Those heatsinks are insanely cheap. 1 Link to comment Share on other sites More sharing options...
Full Range Posted November 10, 2018 Share Posted November 10, 2018 I was going to go with the Conrad heatsinks myself, but I have the equipment & experience to drill and thread tap the heatsinks But time and work commitments was a factor and I went with the deluxe pre drilled chassis from the DIY store ( be aware that the chassis ships from Italy ) Another reason for the deluxe pre drilled choice is that all First Watt PCB kits are based on that mounting configuration Any amp from the first to the last design can be bolted on without any issues Link to comment Share on other sites More sharing options...
kranky Posted November 10, 2018 Share Posted November 10, 2018 Steve, They are a bargain and the owner Julian is a pleasure to deal with. I had thought about going with Marks version but instead went with Zen Mods Bablefish M25 SissSit (or M2 on Steroids) Steve. 1 Link to comment Share on other sites More sharing options...
Batty Posted November 27, 2018 Author Share Posted November 27, 2018 Just ordered a long list of parts for the build, went with the DIYAudio case after all as I couldn't be bothered drilling and tapping. Some parts are on back order from Mouser and some parts are due delivery at the end of Jan next year. I was going to do this over the period of a year but in all honesty knew I would just order all the parts once the PCBs turned up and I got the itch. Now the only thing I have not got is quality hook-up wire, infact I have no wire. Where and what do all you DIYers use? 1 Link to comment Share on other sites More sharing options...
Full Range Posted November 27, 2018 Share Posted November 27, 2018 (edited) 20 minutes ago, Batty said: Now the only thing I have not got is quality hook-up wire, infact I have no wire. Where and what do all you DIYers use? Just good quality 12 gauge stiff copper wire that can hold its shape when twisted is best There is a formula on how many twists per inch are needed for best results if you search Edit - I recall it was 4 twists / turns of the pos / neg wires per inch Edited November 27, 2018 by Full Range 1 Link to comment Share on other sites More sharing options...
Batty Posted December 2, 2018 Author Share Posted December 2, 2018 Parts should start arriving tomorrow according to tracking sites. Link to comment Share on other sites More sharing options...
Batty Posted December 3, 2018 Author Share Posted December 3, 2018 4 boxes of parts arrived today. 2 Link to comment Share on other sites More sharing options...
Sub Sonic Posted December 4, 2018 Share Posted December 4, 2018 Any pics @Batty? Would love some build pics too! SS 1 Link to comment Share on other sites More sharing options...
Batty Posted December 4, 2018 Author Share Posted December 4, 2018 (edited) I'll try to remember to take build pics. The case is on it's way from Italy, due here on the 12th Dec, unfortunately some parts are on back order until the end of January. 1st pic, the parts... so far. Edited December 4, 2018 by Batty 4 Link to comment Share on other sites More sharing options...
Batty Posted December 5, 2018 Author Share Posted December 5, 2018 (edited) 5 hours later... Still waiting on some parts to arrive, 2 of the 5 buffers, both amps and the PSU started. Toroidal transformer en route too. Getting there. Edited January 17, 2019 by Batty 3 Link to comment Share on other sites More sharing options...
Batty Posted December 8, 2018 Author Share Posted December 8, 2018 (edited) Transformer turned up this morning, only 3Kg. Edited December 8, 2018 by Batty 1 Link to comment Share on other sites More sharing options...
Gordon Macfarlane Posted December 8, 2018 Share Posted December 8, 2018 Hey Steve , where did you get the transformer from ? Build is looking good, Link to comment Share on other sites More sharing options...
Batty Posted December 8, 2018 Author Share Posted December 8, 2018 (edited) I'll post the link on Monday, it is on my work PC. It was in WA. Edited December 8, 2018 by Batty 1 Link to comment Share on other sites More sharing options...
Full Range Posted December 9, 2018 Share Posted December 9, 2018 19 hours ago, Ozcall said: Hey Steve , where did you get the transformer from ? Build is looking good, Try - RF Waves I purchased my Custom 240 V Noratel from them 1 Link to comment Share on other sites More sharing options...
Batty Posted December 9, 2018 Author Share Posted December 9, 2018 Yes, that is where I got it from. 1 Link to comment Share on other sites More sharing options...
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