Wire diagrams using WireViz: https://github.com/wireviz/WireViz

spkr.yml

connectors:
  VC:
    type: PHX
    pinlabels: [AMP+, AMP-, SPK+, SPK-]
    manufacturer: AtlasIED
    mpn: AT35
    image: 
      src: images\Atlas_Sound_AT35.jpg
      width: 50
  VCRM:
    type: PHX
    pinlabels: [AMP+, AMP-, SPK+, SPK-]
    manufacturer: AtlasIED
    mpn: AT35-RM
    image: 
      src: images\Atlas_Sound_AT35-RM.jpg
      width: 50
      caption: install in blank 2U face plate
  SPK:
    type: PHX
    pinlabels: ['+', '-', '+', '-']
    manufacturer: AtlasIED
    mpn: FAP42T
    image: 
      src: images\Atlas_FAP42T.jpg
      width: 50
  AMP:
    type: PHX
    pinlabels: [C, 4Ω, 70V]
    manufacturer: Toa Electronics
    mpn: A-824D
    image: 
      src: images\toa_electronics_A-824D.jpg
      width: 140
cables:
  W:
    type: Speaker Cable
    gauge: 16 AWG
    colors: [RD, BK]
    manufacturer: WEST PENN WIRE CDT
    mpn: 225-GY
    pn: LDC00000841
    notes: stranded, twisted pair, unshielded, PVC jacket, gray
connections:
  -
    - AMP: [70V, C]
    - W.: [RD, BK]
    - VCRM.VC_Desk: [AMP+, AMP-]
  -
    - SPK.SPK_Lobby: [1, 2]
    - W.: [RD, BK]
    - VCRM.VC_Desk: [SPK+, SPK-]
  -
    - SPK.SPK_Lobby: [3, 4]
    - W.: [RD, BK]
    - VC.VC_MTG_RM: [AMP+, AMP-]
  -
    - SPK.SPK_MTG_RM: [1, 2]
    - W.: [RD, BK]
    - VC.VC_MTG_RM: [SPK+, SPK-]
  -
    - SPK.SPK_MRR: [1, 2]
    - W.: [RD, BK]
    - VC.VC_MTG_RM: [AMP+, AMP-]
  -
    - SPK.SPK_MRR: [3, 4]
    - W.: [RD, BK]
    - SPK.SPK_WRR: [1, 2]
  -
    - SPK.SPK2_AUD: [1, 2]
    - W.: [RD, BK]
    - SPK.SPK1_AUD: [3, 4]
  -
    - AMP: [70V, C]
    - W.: [RD, BK]
    - SPK.SPK1_AUD: [1, 2]

Output: