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jose

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Everything posted by jose

  1. [emoji23] [emoji23] [emoji23] [emoji23] Oh.... someone stole my headbar basked and my ring !!!!!! Jajajaja
  2. ta ta ta chan!!!!!! Dura Ace 9000 (50/34) is 88 grams lighter than Ultegra 6800 (52/36) My next step: a pair of DT Swiss RS28 SPLine
  3. i'm guilty... I bought this beautify
  4. Thanks guys. I don´t know if my Ultegra Di2 will have problems with the different rings and the ramps between them. My ideal will be 52/34 but this is the problem: The 52 ring doesn't like the 34 ring. The price of an Ultegra 6800 (50/34) is around 155€ and the Dura Ace 9000 (50/34) is 344€. Is a big difference. I need time for thinking about this.
  5. Thanks. It´s the problem of the Shimano bottom bracket. You can´t change the ring. You can change the rings but only with certain combinations for example, you can´t put a 34 with a 52. On my case, if I buy the dura-ace 9000 I will have two bottom bracket (DA 32/50 and Ultegra 36/52) and I would change. (Change the bottom bracket no the rings)
  6. Guys, I´m thinking change my Ultegra 6800 36/52 by a Dura-Ace 9000 34/50. Yes, I know that the new Dura-Ace is here, and the ultegra versión is more cheaper but 9000 versión has a good price now and I need change... my 36/52 is great for flat stages or médium mountain but here we have steep ramps and sometimes I suffer a lot with this development. (rear I used a ultegra 11/32) Ok, I know that a 36/52 with 11/32 is "similar" to 34/50 with 11/28 but the "feeling" on long mountain pass is very, very different. What do you think?
  7. A stupid thing... or not. If the problem is the floor connector, Why you don´t use a thermal silicone (same that we used between headsink and trasistors) but between the connector and the pcb? You only need to make the holes on the silicone.
  8. No problem Soren. I bought the Kemet on Mouser at 30€/ea . Less than that is a fantastic price.
  9. Ok, I know my amps are not very pretty , but I like the simple front. I made the 20mA versión so it need a big heatsinks
  10. Thanks Sorenb. I´m interested.
  11. Today I could dedicate time to amp. It took me very little time regulate. The balance was 0~1 volt (derived a little between both values) and offset was 0~0,5volt (derived a little too).
  12. Thanks all Dr. Gilmore, What value recommended for HV?
  13. CT pin. I feel like a stupid . Spend two hours to review all and spend your time too
  14. Thanks guys. Yesterday I was until 2 AM checked the amps. All components is OK, correct solders, all conections OK. Finally, I moved the trafo wires and I saw something, when I moved it the led shine sometimes. I saw that the PSU socket was rare: I desoldered this piece and a pin on the socket base was broken. I don´t remember too tightly. I had had chinese sockets with this problem but not a Phoenix. So I turned on and all was OK. Leds shine, volt ok. I adjusted the current to 1 volt (20 mA) and then I went to sleep. Tonight I´m working with the balance and off set. Thanks for your patience.
  15. First start. I'm not lucky I have all VRs adjusted to mid point I turn on R channel; both leds shine. A second later, led arround PZTA56, don´t shine (+rail). Turn off the amp and the this led shine again!!! (until the capacitor discharges). The Led arround PZTA06 shine all time. Check Volt on + rail: 1,5 volt. Volt on - rail: -15 volt. No smoke or blown. L channel, it´s similar to R; the same led is shining and then stop.
  16. I changed the LT1021-5 for LT1021-10. Now, psu it´s fine. HV: 402,5 volt. / -401,5 volt Bias, 578 volt. LV: 15,4 volt/ -15,1 volt. Thanks
  17. jose

    kgst

    OK, but a balanced input is a good alternative... Imagine that in the future, you have a balanced source. You only need to spend a little time and very little money. Edit; My KGST has 3 unbalanced input and 1 balanced input
  18. Thanks for your help guys. Yes it's 5 volt. I don't know why use this and I don't remember reading anything about. I ordered this on digikey. In any case, it's my fault and is quite easy to solve. So the correct is the 10 volt versión?
  19. I have a problem with the PSU. Started without load and grounds connected to safety earth. Trafo: 360volt AC x2 and PSU ready for 400 volt DC LV: OK; +15,1 volt and -15,4 volt. Bias: OK; 579 volt at the test point. HV: both sides +119 volt and -119 volt. I don´t see something wrong or blown. Any idea? What can be wrong?
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