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MASantos

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Posts posted by MASantos

  1. I fired up the mini this morning, no smoke or fireworks which is always great! 

    I left it for half an hour to warm up with the case closed and measured the temperature over the transistors with an IR thermometer. I got temperatures between 90-100 celcius, which is very hot.

    This seems to  be quite hot, much higher than what other members reported. 

    Is this safe or should I look into reducing bias? I don't mind the heat, but don't want to have to replace transistors anytime soon.

  2. I was mentioning the rega speakers story. I'll tell you another:

    I bought a lyngdorf audio amp and speakers about one year ago at the portuguese dealer, who gave me a 15% discount on a brand that has a fixed price list. the prices online are all the same everywhere, so I got a very nice deal.  There are good dealers and bad ones everywhere! :)

    • Like 1
  3. On 1/10/2019 at 8:03 PM, Spychedelic Whale said:

    Funny story. Some time ago supersonido had this Rega speakers like half of the price of the Portuguese dealer so I just inquired him if he could do same price as I would prefer to buy from him. His solution ? Call the brand and make threats. Rapidly the prices went back to normal.

    Could see same happening if we just showed these to our Stax dealers.

     

    11 hours ago, Torpedo said:

    You didn't do it right, when there's some disagreement between importers prices buy from the one offering the best price, if that's not possible, NEVER tell who's offering the good deal. These mofos always complain to the manufacturer who will threaten the one offering good deals, specially if in the same area like it's Portugal and Spain.

    As I see it those Danish dealers have met a favorable deal with Stax that allows them to offer generous discounts compared to the crappy dealers in Iberia who don't have large stock. For most of the Stax range they serve in a pre-order policy, you pay half the price, they order to factory, and a few weeks or months later, you get your cans and pay the remaining amount. In this fashion Stax can't offer any favorable discount to such importers, so the prices will always be higher than on "better" dealers.

    Well it isn't fair for a dealer to spend money having a store, stocking products and employing people, having you go there to listen and choose products, and then go buy somewhere else. 

    If one wants to do that then they should order the product from the shop with the great price and return it if they don't like it and the shop allows. One shouldn't have a cake and eat it too in this situation. 

    I can't understand how supersonido gets away with some of the prices they practice, most brands have some sort of price list that dealers should abide. 

     

  4. 56 minutes ago, Pars said:

    I think IIRC that stripe (+?) o the tantalum goes towards the back of the board.
    Also, I wouldn’t populate the 0 ohm jumpers until you have tested and adjusted the amp.


    Sent from my iPhone using Tapatalk

    They should all point to the same side indeed, but I for some reason I can't understand I soldered them this way... ?

    Regarding the 0ohm jumpers, I didn't understand I should only install them after testing the amp, I'll remove them tomorrow as well then.

  5. Underside of the dynalo mini done, just need to clean the flux residue when it's all done. 

    Those 0805 resistors are starting to be  the smaller I can solder without magnifying glasses.

    20181203_163001.thumb.jpg.1d2881aba62647d17a13a8577d72d615.jpg

    I just noticed looking at the picture that the tantalum capacitors don't have the positive to the same side of the board. I must hsve confused this somehow and will take care of it in the morning.

  6. 20 hours ago, Pars said:

    I think you people will be rather pleased with what this group buy had gotten you, and mucho thanks to Gael for organizing/laying it out/and running it!

    Still screwing around with fasteners and may still order some black SS. M3 metric other than the case screws, which are imperial.

    Chris will you be getting the front and back screws with phillips or allen heads? I'd love to get some allen ones for the front and back. 

     

     

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