(kicad_sch
  (version 20231120)
  (generator "eeschema")
  (generator_version "8.0")
  (uuid "cams1-root-0001-0001-0001-000000000001")
  (paper "A3")
  (title_block
    (title "CAMS-1 Church Active Mid — Root Schematic (bi-amp)")
    (date "2026-08-28")
    (rev "A")
    (company "DIY Active Speaker / Church MFG")
    (comment 1 "Signal: XLR -> INA134 -> Master -> LR4@2.5kHz -> dual LM3886 (MID+HF)")
    (comment 2 "Same detail level as lm3886-poweramp + active-crossover mid channel")
    (comment 3 "VERIFY all IC pins against datasheets before PCB fab")
  )

  (text "CAMS-1 PCB SET: (1) CAMS-XO-R1 input+XO  (2) CAMS-AMP-R1 dual LM3886  (3) chassis PSU"
    (exclude_from_sim no) (at 25.4 22.86 0)
    (effects (font (size 1.27 1.27)) (justify left bottom))
    (uuid "t0"))
  (text "MID path = 2x Sallen-Key LPF @ 2.5 kHz | HF path = 2x Sallen-Key HPF @ 2.5 kHz | both gain=21"
    (exclude_from_sim no) (at 25.4 25.4 0)
    (effects (font (size 1.27 1.27)) (justify left bottom))
    (uuid "t1"))

  (sheet (at 30.48 40.64) (size 50.8 30.48)
    (stroke (width 0.1524) (type solid))
    (fill (color 0 0 0 0.0000))
    (uuid "sh_in")
    (property "Sheetname" "01_INPUT_PSU" (at 30.48 39.37 0)
      (effects (font (size 1.27 1.27)) (justify left bottom)))
    (property "Sheetfile" "cams1_input_psu.kicad_sch" (at 30.48 72.39 0)
      (effects (font (size 1.27 1.27)) (justify left top)))
    (pin "LINE_OUT" output (at 81.28 50.8 0)
      (effects (font (size 1.27 1.27)) (justify left)) (uuid "pin_line"))
    (pin "+25V" output (at 81.28 58.42 0)
      (effects (font (size 1.27 1.27)) (justify left)) (uuid "pin_p25"))
    (pin "-25V" output (at 81.28 66.04 0)
      (effects (font (size 1.27 1.27)) (justify left)) (uuid "pin_n25"))
    (pin "+15V" output (at 50.8 40.64 90)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "pin_p15"))
    (pin "-15V" output (at 60.96 71.12 270)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "pin_n15"))
    (pin "GND" output (at 40.64 71.12 270)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "pin_g"))
  )

  (sheet (at 106.68 40.64) (size 55.88 35.56)
    (stroke (width 0.1524) (type solid))
    (fill (color 0 0 0 0.0000))
    (uuid "sh_xo")
    (property "Sheetname" "02_XO_LR4_2500Hz" (at 106.68 39.37 0)
      (effects (font (size 1.27 1.27)) (justify left bottom)))
    (property "Sheetfile" "cams1_xo_2500.kicad_sch" (at 106.68 77.47 0)
      (effects (font (size 1.27 1.27)) (justify left top)))
    (pin "IN" input (at 106.68 50.8 180)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "xo_in"))
    (pin "MID_LINE" output (at 162.56 50.8 0)
      (effects (font (size 1.27 1.27)) (justify left)) (uuid "xo_mid"))
    (pin "HF_LINE" output (at 162.56 60.96 0)
      (effects (font (size 1.27 1.27)) (justify left)) (uuid "xo_hf"))
    (pin "+15V" input (at 127 40.64 90)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "xo_p"))
    (pin "-15V" input (at 137.16 76.2 270)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "xo_n"))
    (pin "GND" input (at 116.84 76.2 270)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "xo_g"))
  )

  (sheet (at 188.0 35.56) (size 50.8 30.48)
    (stroke (width 0.1524) (type solid))
    (fill (color 0 0 0 0.0000))
    (uuid "sh_mid")
    (property "Sheetname" "03_AMP_MID" (at 188.0 34.29 0)
      (effects (font (size 1.27 1.27)) (justify left bottom)))
    (property "Sheetfile" "cams1_amp_mid.kicad_sch" (at 188.0 67.31 0)
      (effects (font (size 1.27 1.27)) (justify left top)))
    (pin "IN" input (at 188.0 45.72 180)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "am_in"))
    (pin "SPK_MID" output (at 238.76 45.72 0)
      (effects (font (size 1.27 1.27)) (justify left)) (uuid "am_out"))
    (pin "+25V" input (at 203.2 35.56 90)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "am_p"))
    (pin "-25V" input (at 213.36 66.04 270)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "am_n"))
    (pin "GND" input (at 198.12 66.04 270)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "am_g"))
  )

  (sheet (at 188.0 81.28) (size 50.8 30.48)
    (stroke (width 0.1524) (type solid))
    (fill (color 0 0 0 0.0000))
    (uuid "sh_hf")
    (property "Sheetname" "04_AMP_HF" (at 188.0 80.01 0)
      (effects (font (size 1.27 1.27)) (justify left bottom)))
    (property "Sheetfile" "cams1_amp_hf.kicad_sch" (at 188.0 113.03 0)
      (effects (font (size 1.27 1.27)) (justify left top)))
    (pin "IN" input (at 188.0 91.44 180)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "ah_in"))
    (pin "SPK_HF" output (at 238.76 91.44 0)
      (effects (font (size 1.27 1.27)) (justify left)) (uuid "ah_out"))
    (pin "+25V" input (at 203.2 81.28 90)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "ah_p"))
    (pin "-25V" input (at 213.36 111.76 270)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "ah_n"))
    (pin "GND" input (at 198.12 111.76 270)
      (effects (font (size 1.27 1.27)) (justify right)) (uuid "ah_g"))
  )

  (wire (pts (xy 81.28 50.8) (xy 106.68 50.8)) (stroke (width 0) (type default)) (uuid "w1"))
  (wire (pts (xy 162.56 50.8) (xy 188.0 45.72)) (stroke (width 0) (type default)) (uuid "w2"))
  (wire (pts (xy 162.56 60.96) (xy 175.26 60.96)) (stroke (width 0) (type default)) (uuid "w3"))
  (wire (pts (xy 175.26 60.96) (xy 175.26 91.44)) (stroke (width 0) (type default)) (uuid "w4"))
  (wire (pts (xy 175.26 91.44) (xy 188.0 91.44)) (stroke (width 0) (type default)) (uuid "w5"))

  (label "TO_8IN_MID" (at 243.84 45.72 0)
    (effects (font (size 1.27 1.27)) (justify left bottom)) (uuid "l_mid"))
  (label "TO_1IN_HF" (at 243.84 91.44 0)
    (effects (font (size 1.27 1.27)) (justify left bottom)) (uuid "l_hf"))

  (text "Open hierarchical sheets in KiCad 8+. Assign footprints from COMPONENTS_COMPLETE.csv then run PCB editor."
    (exclude_from_sim no) (at 25.4 130.0 0)
    (effects (font (size 1.27 1.27)) (justify left bottom))
    (uuid "t2"))
  (text "Exact XO: LP R=3k C1=15nF C2=30nF | HP C=6.8nF R1=6.8k R2=13.6k | see electronics/xo_values_2500Hz.txt"
    (exclude_from_sim no) (at 25.4 132.54 0)
    (effects (font (size 1.27 1.27)) (justify left bottom))
    (uuid "t3"))

  (sheet_instances (path "/" (page "1")))
)