Airbus Loudspeaker Amplifier Pinouts

aural alert test

IMG-20180208-WA0013.jpeg

7WW Loud Speaker-CAPT, 8WW Loud Speaker-F/O

Power: A (28 VDC), B, T (Ground)
Audio Hi input: F
Audio Lo input: G
Connect pins: D to U, E to V
Alarm Input 1 Hi : H
Alarm Input 1 Lo: J
Alarm Input 2 Hi: K
Alarm Input 2 Lo: L
Alarm Input 3 Hi: M
Alarm Input 3 Lo: N

Alarm input overrides Loud Speaker Control Panel (301VU) volume control

2103VC Capt Lighting/Loudspeaker CTL PNL

Audio card Hi input: D
Audio card Lo input: C
Audio Hi output: A
Audio Lo output: B

2108VC FO Lighting/Loudspeaker CTL PNL

Audio card Hi input: D
Audio card Lo input: C
Audio Hi output: A
Audio Lo output: B

Input is audio source. Output connects to loudspeaker.

References: ASM 23-51-02, 31-52-04; AWM 23-51-07, 31-52-01 

Something a little more serious:

3 thoughts on “Airbus Loudspeaker Amplifier Pinouts

  1. Pingback: Audio Control Panel and Loudspeaker Simulation | Soarbywire

  2. Hi,

    I’m trying to reproduce this with the OEM panels and regular speakers, what I’ve found is that the high and low coming from the speaker Amplifier board is ver narrow, the sound I’m getting is loud with very little control, meaning that, when I get it as low as I can, it’s really not very low, not a lot of change from the high setting. Any help with this would be greatly appreciated!!!

    Like

    • Hi Jose, are you connecting directly to the alarm (alerts) pinouts? These are not controllable with the volume knob. The volume control output should only connect to Audio Hi and Audio Lo.

      Like

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