L-ACOUSTICS LA48a Manual V1.0
27/01/2003
8
4. REAR PANEL FEATURES
4.1 IMPEDANCE MATCHING (MLS SWITCH)
The MLS™ (Minimum Load Select) switches located on the rear panel offer power/impedance
matching, allowing the LA48a to power 2 ohm loads without increased heat loss. Please refer to Table
1 to determine the power delivered into a specific load for various MLS switch settings. Note that
higher powers can be achieved utilising higher MLS positions when connected to lower speaker
impedances and as can be seen in Table 1, the LA48a can produce output power in excess of 2000
watts. Essentially, the LA48a amplifier is a power converter and by selecting MLS positions you are
allocating a portion of the available 5800 watts power.
Figure 3: LA48a Rear Panel MLS Switches
Table 1: Output Power Ratings and MLS Switch Settings for the LA48a
LA48a
MLS SWITCH SETTING
LOAD CONFIGURATION
-5 dB
-4 dB
-2 dB
0 dB
16 ohms Stereo (2 channel)
220 W
260 W
410 W
650 W
8 ohms Stereo (2 channel)
430 W
520 W
820 W
1300 W
4 ohms Stereo (2 channel)
830 W
1000 W
1600 W
2300 W
2 ohms Stereo (2 channel)
1660 W
2000 W
2400 W
2900 W
16 ohms Bridged mono
860 W
1040 W
1640 W
2600 W
8 ohms Bridged mono
1660 W
2000 W
3200 W
4600 W
4 ohms Bridged mono
3400 W
4000 W
4800 W
5800 W
Power in watts (EIA 1 kHz, 1% THD)
Summary of Contents for LA48A
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