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  1. Polaris111688

    Bypass Capacitors (signal)

    What effects does bypassing signal capacitors in the input stage of an amplifier have on the signal itself? I'm asking because I'm considering bypassing the 4.7uF Panasonic film caps on the input stage of the power amp I built with Obbligato film capacitors. Thanks ahead of time.
  2. Polaris111688

    Swapping Opamps

    I'm wondering, would it be suitable to replace a NJM4565 opamp with an AD8620 in a preamp circuit designed for the NJM4565? The latter has a much higher slew rate than the former. I'm currently working on plans to modify and upgrade an Onkyo R-805X my dad gave me. I got the schematic online and...
  3. Polaris111688

    Removing ALPS RK027 from PPAv2

    Any tips on how to remove the RK027 from a PPAv2 board without damaging the through-hole plating and board itself?
  4. Polaris111688

    DAC to match something on the order of PPAv2

    I'm looking for a DIY DAC that is on par, in terms of performance, to the PPAv2 amp. I'm looking for minimal SMD and USB capability. Thanks ahead of time.
  5. Polaris111688

    PPAv2 noise

    Ok, so I thought my PPAv2 worked fine after I finished building it. It plays audio fine for about 3 minutes, and then there's random interference that goes in and out (about half a second every time it comes in and a random amount of time between every time that happens) that sounds like radio...
  6. Polaris111688

    High Voltage Capacitors

    Hey. Anyone know where I can get the high-voltage capacitors towards the right of the following diagram? I want to build a EHT power supply for polarizing the diaphragm of my DIY ESL so that I can take the ESL home from school. Understandably, they won't let me take the 5kV power supply...
  7. Polaris111688

    Amp Power Section Idea

    Just thought of a new power supply idea. I was wondering if this was a good idea for a rail splitter: Drawn using Eagle's schematic program.
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