LAm115 User’s Guide
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6
8. Troubleshooting
Simple troubleshooting does not require sophisticated measurement equipment and can be
easily undertaken by users. The technique is to segment the problem by identifying the
faulty system component: signal source, controller, amplifier, loudspeaker or cable? Most
installations are multi-channel; it is often the case that one channel works and others do not.
Trying different combinations of system elements can usually help to isolate and locate the
fault.
Some cabinet faults can be quite easily located and corrected by the user. A simple sweep
with a sine wave generator can be very helpful but it MUST be made at a fairly low level to
prevent damage to the speakers: A sine wave sweep can help find:
Vibrations due to loose screws.
Air-leak noises: check that no screws are missing, particularly where the accessories
attach to the cabinet.
Vibrations due to a front grille badly positioned on the quick release fixings.
Some faults require opening the cabinet:
„
Foreign object that has fallen into the cabinet after repair or through the ports.
Internal connection wires or absorbing material touching the loudspeaker diaphragm:
check by removing the bass loudspeaker.
Loudspeaker not connected or phase reversed following a previous inspection, test or
repair.
9. TECHNICAL SPECIFICATIONS
LAm115 TECHNICAL SPECIFICATIONS
Design
Bass-Reflex, asymmetrical Dispersion
Frequency Range (-6dB)
58Hz-19KHz
Dispersion (HxV)
60º to 100º x 60º
Sensitivity (1W/1m Full-Space) FR/LF/HF
100dB/101dB/109dB
Calc. Maximum SPL (1m Full-Space) FR/LF/HF
133dB/134dB/132dB
Low Frequency Driver
1 x 15" neodymium woofer (4"voice coil)
High Frequency Driver
1 x 1.4" neodymium compression driver
Crossover Frequency
1250Hz (L/R 24dB/Oct.)
Max. Amplifier Power (8 ohms)
Full Range
1000Wrms
Max. Amplifier Power (8 ohms)
Low
2000Wrms
Max. Amplifier Power (8 ohms)
High
230Wrms
Dimensions (WxHxD)
746mm x 395mm x 532mm
Weight
31Kg