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Showing content with the highest reputation since 01/11/2019 in all areas

  1. 19 points
    Finally got around to finalize my Megatron, fitted into one chassis with GRHV.
  2. 15 points
    I was with Alex in his first judo championship... My champion. [emoji16]
  3. 15 points
    I'm sitting in the jury assembly room watching a video to teach me about the US justice system and jury trials. Interesting stuff.
  4. 15 points
    Family trip to Hamilton. Better late than never!
  5. 15 points
    Adopted this little girl today. She is a 6 year old female. Very sweet but very shy. She was found as a stray but now she’ll have a great home.
  6. 13 points
    Closed on my new home late yesterday and moved today. Too tired to celebrate tonight but picked these up so I am ready. 4 months living in limbo. I am home now.
  7. 12 points
  8. 12 points
  9. 11 points
    Very cool Jose! Finished my latest composition. This time I wanted to use plenty of notes,.. and marimbas too! Memories of a care free day at Giffis Sculpture Park in upper state NY.
  10. 11 points
    When Nate comes to town, he must be given a proper welcome. Mikey handling the damascus steel Colin's example was the most picturesque, b/c, I mean... This a better view? DoxDoxDox waiting for her slice Waiting to be served
  11. 11 points
    There has been some renewed interest in the DSHA3F (which is our Focal optimized amplifier) of late. In order to keep the manufacturing process as smooth as possible, I am accepting orders for this amplifier for a small batch run for the next 2 weeks or so. I expect these amplifiers to be delivered around late March (with any orders after this batch not being ready until June or so.) Price is $2800, and orders require a 50% nonrefundable down payment.
  12. 10 points
    When I heard these were being released I just had to get a set to see if they matched the supreme crap that the original was. Now after some delays I picked the set up from the postoffice. This first post will focus mostly on the amp, the headphones will be taken apart at a later date. I have been listening to them for a few hours now so some quick impressions are in order though. Same build quality as we've come to expect from Hifiman...i.e. absolute fucking trash. First off, the phones stink badly. These are 1500$ on their own so much like the Shangri-La JR... everything is nasty synthetic crap. Same cable as the Shangri-La and Jr. use which is completely unsuitable for this role. Comfort is ok, I have the headband at max extension and the headpad is a bit uncomfortable due to that. It's odd though as they are feather light. As for the sound, well first thing you'll notice is the utter lack of usable deep bass output. I think there might be a port hiding somewhere in there as they don't squeal as they should. Tonally they are ok though, a bit thin, non offensive and the soundstage is decent. Similar league as the L300 but the bass issue has to be fixed for them to be directly compared. This is off my usual setup (Denafrips Terminator, Carbon CC) and not the included amp. Nothing from China is turned on here without being taken apart... Now for the amp, this is probably the worst chassis design ever and pretty much an utter pain to get into. Now to do so, you have to take off the front and remove the two screws which hold this PCB: Then remove the nut which holds the attenuator (more on that later) and finally remove the screws for the back panel: Undo everything there as well and the power switch and input wires are on connectors. I just cut the IEC off though as the input wires for the switch are nowhere close to safe and so is the earthing in this thing. Just look at how thin that stuff is. Also, why the hell didn't they use push on connectors for the IEC? It would make it much simpler... Once all that stuff is off you can pull out the pcb's and disconnect the transformer: Doing that I saw this gem... the bare wires from the transformer are ziptied to the input lead. Yup...no need to separate that... You can also see the earthing tag there. At this point I'm not sure where the earth is actually connected to the chassis. Two wires connect with a screw to the top PCB at the back, one from the IEC and one from the transformer shield. Granted this goes through some standoffs and to the chassis eventually but that is now how earthing should be done. On the other side of the board there is an earth wire that goes directly to the pot, which is mounted on the chassis but that is also not proper earthing. This is all very China "we don't give a fuck about safety". Now here is the top board as it comes out of the chassis: Clearly the PSU and easy to read the output voltages on the bottom. Fixed regulators for the low voltage stuff (proper JRC parts so that's nice) and simple HV supply. Now anybody familiar with old Stax amps will notice what the amp actually is at this point. Funny to see the mix of crap caps, the input caps for the LV supplies are Lelon (crap) but the output are Nichicon. Same goes for the HV side, input are "JH" (never heard of it) but the output are Nippon Chemicon. Just odd but I'll go more in depth on the PSU when I rip out all the crap caps. Here is the back of the PSU: Now the amplifier, with just three voltage rails, +/-15V and +660V there is just one possible topology here. Resistor current source feeding a single output device. So here we go: Yup this is utter shit and a clone of what Stax did with the SRA-10/12S back in 1972. It gets worse though... Say hello to the mosfet output devices and well...their typical output capacitance of 65pf. That's half the capacitance of the phones and you have two of these per driver. Yup...pure quality here. The 2SC4686A we used in the KGSSHV have a Cob of about 2.4pf and the goal here is to keep it as low as possible otherwise it will mess up the sound signature of the amp. Think Cavalli Liquid Lightning here... Here is the input section and the we need to discuss that a bit. So this amp has a balanced input but it isn't balanced. The volume control is one of those cheapo 21 step steppers you can find on ebay for 15$ and just two decks. There are also just two wires coming from the input board per channel, Rin and ground... Funny too is that the instructions manual specifically states that the volume control is a 21 step relay based attenuator. Yeah...that is a fucking lie. So the amp is resistor loaded mosfet with output capacitance matching the load and isn't actually balanced. The output caps are at least larger what what Stax used back in the day so that is something... Now we need to discuss this board: This is on front panel and for some reason the outputs have relays on them and 1K output resistors. While better than nothing, something in the 5K range would be a better choice. Now comes the point some were waiting for, can this thing be used with Stax sets? At this point I'd say no, there are just 2M ballast resistors on that board for each output (no idea why they used two) so this amp can damage Stax. Ohhh and one funny thing before I go do something productive...they hand matched the output load resistors... Finally just a dump of the extra pics I took if anybody wants to look through them.
  13. 10 points
    Alex and me working in our X5
  14. 10 points
    Some little guys were having a tough day. Ten in. Ten out.
  15. 10 points
    Thanks for the good tidings, my friends. Mellow day, lunch with an old friend, and dinner coming up with family and Mr Tice. Sisters in law are bringing home made biscuits and cocktails and Claire made a lovely chocolate poke cake. Good times.
  16. 10 points
    Squeezed this amp into a small Modushop case. Tight fit for the caps, but it works. Doesn't get particularly warm. An interesting alternative for planars.
  17. 9 points
    I went to the Eugene Ballet's production of The Firebird. A modern adaptation set in a dystopian post app future (and you gotta know I loves me some dystopian post app futures). Overall, the performance from the dancers and the sound out of the orchestra pit was very enjoyable. I was stoked!
  18. 9 points
    I went to the touring production of Spamalot. It was the perfect mix of old and new.
  19. 9 points
    The srm-001 is an opamp driving a fet that drives a transistor (cascode) into a load resistor and is cap coupled to the output. (cascode differential) The jade2 is an opamp driving a transistor that drives a mosfet (cascode) into a load resistor and is cap coupled to the output. The calculation of output capacitance is flat out wrong as the middle of the cascode is AC ground. (cascode differential) Just about identical. Obviously the jade2 consumes a bunch more power and puts out a bunch more power. I own 2 hifiman products. Both are built like shit. I'm unlikely to buy hifiman products ever again.
  20. 9 points
    Made some multi-coated front panel recently. This is a small project @ang728 and I ran together. This is our first attempt to try multi-coated for the front panels. I don't know if this kind of finishing will start to peel off in longterm. We'll see. We are thinking making more interesting colors, too. Maybe "Hulk" green or something like that... The blue one has tapered feet while the red one has real spiked feet.
  21. 9 points
    Here's some pics of the power supply inside a Canon build...
  22. 9 points
    And...done! 30 minutes from opening the door. Thanks to G-Man and T-Money (sounds like a super hero duo) for the extremely accurate information and advice.
  23. 9 points
    Reuben burger. Burger Antics.
  24. 9 points
    She's about as self-made as her dad's vagina.
  25. 9 points
    Well I was finally fed up with the shit cable so out came the tools... One funny thing, I just read through the manual and it specifically states that these have a gold plated plug...which they don't have in reality. Why state something which ever owner will easily spot as a lie? Similar earpads to the Shangri-La Jr. The protective mesh is just a black PCB and the other side even has some production markings on the silkscreen. First reveal and yup...these are 100% pcb. Just stacked up in the baffle and no glue at all. Now comes a pile of pics: It's an interesting design but from a build quality point of view, this is miles away from what Stax are doing. One other thing, the headphones are wired up backwards, + output is wired to the back stator. The back grills just drop out and are not fastened in any way. Time for a new cable. The wide PC-OCC Stax cable is a tight fit but it does work. All done.
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