Pro Audio Electronics LLC


LS4808/ LS4816 – 8/ 16 Channel Speaker Line Surveillance

LS4808 and LS4816 are all new speaker line monitoring unit, replacing the long running LS4600. Now available in 2 versions ; 8 and 16 channels types.

​With their new processor and measurement algorithm, they are now able to perform tasks faster with better accuracy. Additional features included were trigger monitoring, which can be linked to timer for preset times activation.

​Similar to its previous model, they provide reliable speaker circuit monitoring for ground leakage, short and open circuit using impedance measurement method, thus eliminating the use of blocking capacitors and end line resistors.

Amplifier Changeover : Auto and manual versions of standby amplifier fault changeover are available to ensure continuous and uninterrupted operation of system.

Line Monitoring  : Auto speaker line monitoring for 8 and 16 zones and also rack mounted amplifier monitoring panel.


Speaker line monitoring which detects fault in speaker circuits and changeover panel for standby amplifier takeover of failed duty units are features required to comply with EN54 and BS5839 Part 8 standards, as well as other localized regulations.

Amperes has what are required to perform those functions, as tabulated below.


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