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federicopol

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Everything posted by federicopol

  1. Hello, while i wait for some parts for restoring my sra12s i made some new earpads for my sigmas. I also made the internal dampening. Following the advice of Spritzer i used the most dense material i could find. By pure luck the material and quantities i used seems to be ok. The soundstage seems here, definitely the best of the headphones i own. The bass is present and clear so i am pretty happy of the final result. I decided to substitute the earpads because i don't feel comfortable using earpads that have been used by someone else for 30 years... I decided to not use a s
  2. Thank you very much, i'll remove them and try with something dense. By the way in my sra12s i have a +640V rail on the PS that feeds the amplifer board. Using that 640v point and a 2 resistors voltage divider to create the pro bias voltage is the normal way to do that? Ir therebis a better way? Thank you very much and sorry for the newbie requests...
  3. Hello, i am new here and since the Mafia reside here... i'm gonna ask for a help to the Padrino or some of his associates.... I recently bought a sra-12s that needs some love (a recap, a pot cleaning and an adding of a pro bias out), i got a discount on the original asking price and i got gifted a pair of stax sigma Normal bias ("because i don't know what to do with them if i sell the amplifier"). The Sigma are really ok, the drivers are ok, they simply need a cleaning AND a new damping because the original glass wool dampening have been removed. My question is: What can i
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