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frequency

  1. Detailing, Wash & Wax
    Had my car treated to the works yesterday and it is beautiful. I was wondering, how often is clay bar treatment recommended? Every time the car is waxed (2/year) or less frequently?
  2. Audio/Video & Navigation
    May I ask for someone who has stock premium audio to make the measurement of the frequency response on the SINGAL LINE BEFORE AMPLIFICATION? And can anyone confirm if the signal is actually differential balace with shields? Thanks!
  3. Audio/Video & Navigation
    Ran Alpine's PXE unit today for amp. I found out that the frequency response (from AntEQ result) of the head unit is not too good. There's a boost at 80Hz, crosses 0 at 60Hz and going down sharply. There's a boost at 850, then a dip around 1.5k and then a boost around 3k then it gradually roll...
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