Operation Manual

6. Installation

D SERIES Lake Operation Manual rev 3.0.4

6. Installation

D SERIES Lake Operation Manual rev 3.0.3

6.4.1. Low voltage country considerations

Although the D Series has a wide range of operating mains voltage, some considerations can be applicable for

low voltage regions. D Series performs well throughout the specied nominal voltage range but has slightly better

efciency at higher voltages. For regions with nominal voltage below 140 V, one could consider connecting the

amplier in a three phase delta or two phase split-phase conguration, especially applicable for the bigger models,

(D200, D120 and D80).

NOTE: Following connections applicable only for resulting voltage inside the ampliers nominal voltage

range.

Connecting the amplier in three phase delta conguration

In three–phase conguration where the phases are 120 degrees apart, one can connect three balanced loads in a

delta conguration. The connection is made between the phases instead of between the neutral and a phase.

Amp

120V

Amp

N N

Amp

3 phase Y 120V

3 phase delta 208V

208V

L1 L2

Figure 6:4: Three phase delta conguration

Connecting the amplier in a split phase conguration

In two phase split–phase conguration there are two phases separated by 180 degrees. Connecting between the

phases gives double the line voltage.

Figure 6.5: Two phase split–phase conguration

6.5. Grounding

D Series must be grounded (earthed) with the safety ground pin to the mains distribution system. NEVER

disconnect the earth (ground) pin on the mains cable (AC power cord). Use correctly-shielded balanced audio

input connections to minimize hum and interference.

Split phase 100V

100V 100V 200V

Amp

L2N

Amp

Split phase 200V

L1 L2

Amp