amperes electronics
Professional Public Address (PA) System Manufacturer
LS4808
8 Ch Speaker Line Surveillance
LS4808 is an 8-channel speaker line monitor that detects faults using impedance measurement, with easy setup and remote testing support.
Available in 8 (LS4808) or 16 channels (LS4816)
Reduce PA disruption with short test signals
Detection time adjustable from 1 min to 48 hrs
Bi-colour LEDs for fault indication
Introduction
LS4808 and LS4816 are next-generation speaker line monitoring units, designed to replace the long-standing LS4600. Available in 8-channel (LS4808) and 16-channel (LS4816) versions, these units offer fast, accurate monitoring of speaker circuit integrity including ground leakage, short circuits, and open circuits, using advanced impedance measurement—eliminating the need for end-of-line resistors or blocking capacitors.
Powered by a high-performance processor and refined measurement algorithms, LS4808 and LS4816 deliver faster detection with greater precision. Dual detection modes—Basic and Advanced which allow flexibility to suit installation needs, while a trigger monitoring function allows enables timed activations when linked to a timer. Fully compliant with EN54 requirements, these units are ideal for ensuring reliable speaker line monitoring in safety-critical PA and EVAC systems.
Packing information
Carton size: 555 (L) x 295 (W) x 95 (H) mm
Gross weight: 2.75 kg
1 unit(s) per carton
Introduction
LS4808 and LS4816 are next-generation speaker line monitoring units, designed to replace the long-standing LS4600. Available in 8-channel (LS4808) and 16-channel (LS4816) versions, these units offer fast, accurate monitoring of speaker circuit integrity including ground leakage, short circuits, and open circuits, using advanced impedance measurement—eliminating the need for end-of-line resistors or blocking capacitors.
Powered by a high-performance processor and refined measurement algorithms, LS4808 and LS4816 deliver faster detection with greater precision. Dual detection modes—Basic and Advanced which allow flexibility to suit installation needs, while a trigger monitoring function allows enables timed activations when linked to a timer. Fully compliant with EN54 requirements, these units are ideal for ensuring reliable speaker line monitoring in safety-critical PA and EVAC systems.
Packing information
Carton size: 555 (L) x 295 (W) x 95 (H) mm
Gross weight: 2.75 kg
1 unit(s) per carton
LS4808
Power requirements
Operating voltage
24V DC via PS9400
Power consumption
3.8W
Measurement, pilot tone, & setting
Capacity
8
Impedance detection range
10 to 10k Ohm
Power measurement range
10 to 1000W 100V line
Measurement accuracy
+/- 5% within range
Pilot tone injection frequency
1 kHz
Pilot tone signal output level
5V sine
Monitor triggering
Auto / remote trigger
Transmitted detection period
0.5 seconds per channel (max)
Detection interval
User preset from 1 min to 48 hours
Sensitivity setting
User preset at each channel
Indicators + LED
Normal ; Fault ; Buzzer ; Auto run
Display LCD
2 x 16 characters with back light
Audible output signal
Continuous buzzer with OFF option
Dry contact setting
3A
DC output in detection mode
24V DC for individual channel
Data interface
RS485 : 19.2 kbps
Case
Dimensions (W x H x D)
482 x 44 x 180 mm
Weight
2.15kg
Note: The specification parameters may be changed, added, or omitted without prior notice.
Available in 8-channel (LS4808) or 16-channel (LS4816) models
Uses impedance measurement, allowing speaker circuit branching
End-of-line resistors are not required
Offers both basic and advanced detection modes for flexibility and accuracy
Uses short test signals to minimize disruption to PA operation
Supports automatic or manual fault detection with external test triggers
Adjustable detection intervals from 1 minute to 48 hours
Optional isolation of faulty circuits for safety and reliability
Bi-color LED indicators to show circuit fault status
AUX 24V DC output to override volume controls during testing
RS485 port allows remote testing via PMX III and iPX5500 interface
Registered association members of
International recognitions
Payment
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Sales Office (Malaysia)
70, Jalan Industri PBP 3,
Taman Perindustrian Pusat Bandar Puchong,
47100 Puchong, Selangor, Malaysia.
Tel: +603-5882 7757 / 7758
Production Factory (Malaysia)
2, Jalan Meranti Puchong D25@Meranti Puchong
47120 Puchong, Selangor, Malaysia
Export Sales Office (Singapore)
Amperes Asia Pte Ltd
(Co Reg: 201102253E)
1, North Bridge Road, #13-03, High Street Centre, Singapore 179094
Amperes Electronics Sdn Bhd
Registration No: 200001006420 (509025-X)
Your Trusted PA System Manufacturer since 1999
Sales Office (Malaysia)
70, Jalan Industri PBP 3,
Taman Industri Pusat Bandar Puchong
47100 Puchong, Selangor, Malaysia.
Tel: +603-5882 7757 / 7758
Production Factory (Malaysia)
2, Jalan Meranti Puchong D25@Meranti Puchong 47120 Puchong, Selangor, Malaysia
Export Sales Office (Singapore)
Amperes Asia Pte Ltd
(Co Reg: 201102253E)
1, North Bridge Road, #13-03, High Street Centre, Singapore 179094