Operation Manual
11. Operation and performance
20
D SERIES Lake Operation Manual rev 3.0.4
11. Operation and performance
20
D SERIES Lake Operation Manual rev 3.0.3
11.2.1. Symmetrical power
D Series models can deliver power as shown in Table 11.1 when all channels are driven equally.
Load Impedance (ohms)
2 ohms
(per channel)
2.67 ohms
(per channel)
4 ohms
(per channel)
8 ohms
(per channel)
16 ohms
(per channel)
Hi-Z 70 V
(per channel)
Hi-Z 100 V
(per channel)
D 200:4L 4400 W 5000 W 4400 W 2300 W 1150 W 3300 W 4700 W
D 120:4L 3000 W 3000 W 3000 W 1900 W 950 W 3000 W 3000 W
D 80:4L 2000 W 2000 W 2000 W 1500 W 750 W 2000 W 2000 W
D 40:4L 800 W 1000 W 1000 W 1000 W 700 W 1000 W 1000 W
D 20:4L 500 W 500 W 500 W 500 W 425 W 500 W 250 W
D 10:4L 250 W 250 W 250 W 250 W 250 W 250 W 175 W
Table 11.1: Symmetrical Load Power Ratings
11.2.2. Rational Power Management™
Rational Power Management™ (RPM) is a unique Lab.gruppen feature that allows for exible allocation of power
across channels of a D Series unit. Power that is not used by one output channel is free for use by another output
channel with greater demands. Unique to this series is that all models in the range have amplier channels that can
produce higher outputs than the average 25% of the total power, see the Technical Specications for the maximum
single channel power capacity. RPM automatically allocates power up to the total limits of the specic amplier
model and helps minimize unused power in the installation.
er; peak and Via the CAFÉ Software, desired
RMS voltage; and also the speaker’s AES power rating. By specifying the nominal impedance of the load, the RPM
algorithms have all input data required to calculate resulting RPM settings. If the desired RPM settings results in a
total power output higher
of delivering the
reduction in dB. Once applied, the RPM functionality will ensure that all channels are capable
is performed with the ISVPL limiter algorithm. As default the R
the channels at a voltage (default voltage limitation) given in
in two modes.