L-Acoustics 112XT - 2.2 Powering 115 XT

L-ACOUSTICS XT Manual V1.1 2/11/2003 14
Table 4: Recommended MLS switch settings for powering 112XT
MLS SWITCH SETTING
LA17a LA24a LA48a
112XT LO SECTION 0 dB -2 dB -2 dB
112XT HI SECTION 0 dB -2 dB -4 dB
Figure 4: MLS switches on the rear panel of L-ACOUSTICS LA24a, LA48a amplifiers
2.2 POWERING 115XT
Continuous (rms) and peak power handling ratings for the 115XT are as follows:
LF Section: 45 volts rms long term (pink noise with 6 dB crest factor)
250 Watts (continuous), 1000 Watts (peak) at 8 ohms
HF Section: 26 volts rms long term (pink noise with 6 dB crest factor)
85 Watts (continuous), 350 Watts (peak) at 8 ohms
Table 5: Load and Power Ratings for 115XT
115XT ENCLOSURE RATINGS
ONE 115XT TWO 115XT THREE 115XT FOUR 115XT
SECTION LOAD RMS PEAK REC'D LOAD RMS PEAK REC'D LOAD RMS PEAK REC'D LOAD RMS PEAK REC'D
LOW 8 250 1000
500
4 500 2000
1000
2.7 750.0 3000
1500
210004000
2000
HIGH 8 85 350
350
4 170 700
700
2.7 250.0 1000
1000
2 350 1400
1400
For amplifying 2 115XT in parallel, the recommended amplifier specifications are:
* LOW Amplifier Output Power: 1000 W into 4 ohms
* HIGH Amplifier Output Power: 700 W into 4 ohms
For amplifying 3 115XT in parallel, the recommended amplifier specifications are:
* LOW Amplifier Output Power: 1500 W into 2.7 ohms
* HIGH Amplifier Output Power: 1000 W into 2.7 ohms
For amplifying 4 115XT in parallel, the recommended amplifier specifications are:
* LOW Amplifier Output Power: 2000 W into 2 ohms
* HIGH Amplifier Output Power: 1400 W into 2 ohms