Lab.gruppen PLM series Operation Manual

Also see for PLM 10000Q: Supplementary guide User manual addendum Specifications Quick start Technical data

Contents

Lab.gruppen PLM series Operation Manual Manual pdf 22 page image

16Operation and PerformancePLM Series Operation Manual rev 1.1.95. Operation and PerformanceThis chapter provides comprehensive information on PLM Series connection, setup, operation and perfor-mance. The detailed information included here is essential to realizing the full functionality of the PLM Seriesdevices.5.1 Operation PrecautionsMake sure that the Standby button on the PLM’s front panel is either unlit (OFF), or red (STANDBY), beforemaking any input or output connections.Ensure the AC voltage matches that printed on the label adjacent to the AC mains connector.Ensure no input signal is present when powering on the PLM to reduce the risk of any inadvertent bursts ofhigh level audio.5.2 Power Output PerformanceThe PLM uses Lab.gruppen’s patented Class TD technology in the output stages, which couples the ef-ficiency of Class D topologies to the sonic purity of Class B designs.The primary benefit is that Lab.gruppen’s Class TD works perfectly under all load conditions. The outputmaintains its flat frequency response even into complex loads with very low nominal impedances. Reliabilityis very high, and there is no interference with nearby RF equipment. Superior efficiency allows greaterpower density while minimizing cooling requirements, yet sound quality matches that of the best Class Bdesigns.5.2.1 Symmetrical PowerThe PLM models can deliver power as shown in Table 5-1 when all channels are driven equally.Load Impedance (Ohms) 2.0 2.7 4 8 16PLM 10000QMax. Output power (Watts) 2350 2700 2300 1300 660PLM 14000Max. Output power (Watts) 7000 6000 4300 2300 1150PLM 20000QMax. Output power (Watts) 4800 5000 4440 2300 1150Table 5-1: Symmetrical Load Power Ratings