Martin Audio AQ Series AQX System Controller limiter settings

AQX System Controller limiter settings

Reminder:

AQX controllers must only be configured by fully qualified electro-acoustics technicians as

mistakes could prove costly. Switch off the AQX controller and ensure that the mains plug

is removed from the power socket.

To set AQX limiters correctly:

1) Remove the AQX controller lid

2) Unplug and temporarily remove the AQX top pcb (printed circuit board). You will need to

squeeze the nylon pillar latches gently with a small pair of pliers taking care not to

damage adjacent components

Configure the 4-way links J11, J12, J13 & J14 on the AQX motherboard - one 4-way link

for each output. Configured the links to suit the relevant power amplifier gain – see the

table overleaf.

Jumper allocation: J11 = Ch1 (left sub), J12 = Ch2 (left main)

J13 = Ch3 (right sub), J14 = Ch4 (right main)

For your convenience, Martin Audio power amplifiers are supplied set to 32dB

gain. See the 32dB line on the following table for suitable limiter settings.

Click here for the original spreadsheet that also includes a page for working out your amplifier’s

gain based on its maximum output and sensitivity figures. This spreadsheet also includes a handy

table for converting rms voltages to dBu or dBV.