PrestonTom Posted July 6, 2016 Share Posted July 6, 2016 Good luck on your project! Quote Link to comment Share on other sites More sharing options...
Cantilope Posted July 14, 2016 Author Share Posted July 14, 2016 WARNING - Phonographic amp content Really nice amp you have there. So clean. 1 Quote Link to comment Share on other sites More sharing options...
Full Range Posted March 15, 2017 Share Posted March 15, 2017 A quick update on my M2 build It developed some hum issues and @wdecho helped me with earth schemes ect, and I thank him for his help In the end it was the toroidal transformer causing the hum with stray RF - This unit was not a good match with this amp A new Notatel brand custom made toroidal with a flux shielding band was fitted and the hum stopped quick as a flash Now it's so quiet it's like a vacuum in space Very giood match for the La Scala FR Quote Link to comment Share on other sites More sharing options...
Full Range Posted March 16, 2017 Share Posted March 16, 2017 I know you all want photos so I got the camera out to showcase my M2 amp build FR 2 Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 16, 2017 Share Posted March 16, 2017 Beautiful build. How does it sound? Quote Link to comment Share on other sites More sharing options...
Full Range Posted March 16, 2017 Share Posted March 16, 2017 46 minutes ago, CECAA850 said: Beautiful build. How does it sound? My review of the M2 Using Harris/Vishay Transistors and Audio-note non magnetic resistors in R1,R2,R3,R4 This review is judged against my previous amp builds - the F5 from memory and the F6 Components used in this test Pre - Nakamichi CA5 Source - Cyrus CD8 SE Medium - CD Speakers - Klipsch La Scala ( Highly Modified ) Sensitivity min 104db Album - Pink Floyd - Dark Side Of The Moon, and my brutal mixed track test CD Warm up 1 hour The F6 is super sharp and precise and does all things nice In a word - Its very analytical and has excellent 3D presentation in high sensitivity speakers just like the F5 its very punchy but has more finesse than the more rugged F5 amp The M2 is extremely precise, but with a presentation that has more reserved control with an emphasis on the instrument separation and vocal area In playback, its not holding anything back but only gives whats required to get the job done The M2 portrays the feeling and tempo of the music a little better, by emphasising a slightly more controlled and a warmer feel with a wider presentation Still very sharp on changing passages but with a little more warmth Treble - is clean and clear with lots of hang time and controls the full spectrum until it trails off Midrange - is where the M2 shines and it shines on vocals and softer instrumental passages Bass - is still abundant but with A little less thump but has more control To compare the sharpness scale of the F6 and M2 Amps with an example F6 = You have a cleaver and a piece of steak on a cutting board You have the cleaver raised at head level and strike - it cuts immediately and cleanly But you can't hit a precise spot to cut M2 = You have a sharp knife and a piece of steak on a cutting board You have the knife placed exactly where you want it to cut - you push - it cuts immediately and cleanly but cuts in exactly the place you want it -- This is the M2 FR 1 Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 16, 2017 Share Posted March 16, 2017 Great review, thanks. Quote Link to comment Share on other sites More sharing options...
davesans Posted March 16, 2017 Share Posted March 16, 2017 Congratz on your build it looks great Quote Link to comment Share on other sites More sharing options...
Full Range Posted March 16, 2017 Share Posted March 16, 2017 I should point out that I have journeyed quite a long way in my crossover build to find Nirvana The combination of a seriously good amplifier, coupled to extremely good speakers, tuned the crossovers like a racing car - will give one the feeling of Utopia in a Zen like kind of way while enjoying your favoured genre of music This is my crossover build journey if you care to read the thread - https://community.klipsch.com/index.php?/topic/149952-a-crossover-design-on-single-exposed-board/& Quote Link to comment Share on other sites More sharing options...
Cantilope Posted March 17, 2017 Author Share Posted March 17, 2017 Very nice! I agree with your your review of the M2, (although I have not heard a F6) it really does shine in the midrange. 1 Quote Link to comment Share on other sites More sharing options...
Full Range Posted March 18, 2017 Share Posted March 18, 2017 11 hours ago, Cantilope said: Very nice! I agree with your your review of the M2, (although I have not heard a F6) it really does shine in the midrange. Put pen to paper mate Its good to compare my listening experience through the La Scala's And your experience through your Jubillees FR Quote Link to comment Share on other sites More sharing options...
Full Range Posted March 18, 2017 Share Posted March 18, 2017 My system can be described as built up in a holistic way Not one component is a star but is part of the team FR Quote Link to comment Share on other sites More sharing options...
avguytx Posted September 6, 2017 Share Posted September 6, 2017 Reading this thread intrigues me into ordering parts to build one of these....maybe the Aleph J. Still have to build my Belle cabinets and it's cooled off nicely in central Arkansas so it won't be hot in the "shop" right now. The amp would be a fun winter project and about the best time to use one as Class A amps can be room heaters...like tube amps. @wdecho & @Cantilope, I may solicit your input along the way if this comes to fruition. These are some beautiful amps you guys have done and thanks for documenting them. Quote Link to comment Share on other sites More sharing options...
Cantilope Posted September 6, 2017 Author Share Posted September 6, 2017 1 minute ago, avguytx said: @wdecho & @Cantilope, I may solicit your input along the way if this comes to fruition. These are some beautiful amps you guys have done and thanks for documenting them. Of course, just let me know what I can do to help. Joe Quote Link to comment Share on other sites More sharing options...
NBPK402 Posted December 6, 2018 Share Posted December 6, 2018 Thanks, for the excellent write up! Quote Link to comment Share on other sites More sharing options...
Full Range Posted December 6, 2018 Share Posted December 6, 2018 Update A new M2 DIY kit is now available from the DIY store Kit link https://diyaudiostore.com/collections/printed-circuit-boards/products/m2x Read about the new new design kit here https://www.diyaudio.com/forums/pass-labs/321925-diyaudio-watt-m2x.html 2 Quote Link to comment Share on other sites More sharing options...
rhing Posted December 6, 2018 Share Posted December 6, 2018 This looks really compelling and I have 2 matched pairs of the Toshiba JFETs that I was considering for a Pass DIY F5 Turbo build. The most intriguing version is the single-ended Mountain View version using available Fairchild JFETs. Right now, I am building the Pass DIY Sony VFET push-pull amplifier using parts that wdecho sold to me earlier this year. I hope to complete this amp by Christmas, and I will post photos that chronicle the build process. 3 Quote Link to comment Share on other sites More sharing options...
DizRotus Posted December 6, 2018 Share Posted December 6, 2018 52 minutes ago, rhing said: This looks really compelling and I have 2 matched pairs of the Toshiba JFETs that I was considering for a Pass DIY F5 Turbo build. The most intriguing version is the single-ended Mountain View version using available Fairchild JFETs. Right now, I am building the Pass DIY Sony VFET push-pull amplifier using parts that wdecho sold to me earlier this year. I hope to complete this amp by Christmas, and I wil post photos that chronicle the build process. Rich, (you too @Cantilope) You’re a bad influence on me. Do you ever put down the soldering iron to just enjoy the music? Thanks to you, I hot-rodded several TDA7297s, then moved from that gateway drug to gmarsh’s Wiener TPA3118 and lastly to a TI TPA3255EVM. The TDA7297 with the $1 blue caps from Radio Shack (RIP) was put in a case to function as a microphone pre-amp. That tiny low-buck amp powers Heresys to the delight and amazement of most who hear it. To my ears, the Wiener with balanced input from Pono sounds clearly better, but most regular folk say, “they both sound good.” Similarly, the TPA3255EVM in balanced mode sounds better to me than the Wiener, but others just shrug their shoulders and look at me like I’m nuts, which I am. The point of this ramble is that the M2 DIY kit appeals to the DIY tinkerer in me, but what’s left of my rational self says to back away from the keyboard and just enjoy music from one of the many amps currently at my disposal. Which is a good time to mention that a h/k 730 Twin Powered receiver might soon be available to any forum member willing to pay for shipping from 48009. If interested, send a PM to get in line. Perhaps this weekend I’ll take some photos and start a thread regarding the 730. As much as I’d like to hear a M2 DIY kit or any First Watt clone, I’m afraid I might like it. 2 Quote Link to comment Share on other sites More sharing options...
DizRotus Posted December 9, 2018 Share Posted December 9, 2018 Apologies @Cantilope for hi-jacking your interesting thread, but there is no longer a need to post a separate thread regarding my h/k 730 in need of a new home. Bruce aka @Marvel is first in line for the h/k 730. Bruce will get it in exchange for paying the shipping. I recently received a decent Dual 1229 from @slindeedean for the cost of shipping. That kind offer followed a mention that I was looking for a way to play 78s I might run across. I’m glad to pay it forward and send this 730 to Bruce. 1 Quote Link to comment Share on other sites More sharing options...
Marvel Posted December 9, 2018 Share Posted December 9, 2018 Salamat, po... To keep this on track, I have ordered a couple of John Lindsey Hood amplifers boards (from China... we'll see when they get here). They are 10-15 watt class A amps. I'll have to get some heatsinks, power supply, etc., but am looking at using them when I try an active setup. Bruce 1 Quote Link to comment Share on other sites More sharing options...
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