User Manual

4.5. High impedance connections (PC-DI series only)
The PC-DI series also supports high impedance (100V/70V line).
■ Number of speaker systems that can be driven
As long as the total rated input of the speaker systems used is within the output value of the power amp, any
number of speaker systems can be connected in parallel.
When using high-impedance connections, the rated input of the speaker system is determined by the settings of
the speaker transformer used with the speaker system.
If using the 600W output PC406-DI with a speaker system whose rated input is 20W due to the attached speaker
transformer, calculations * show that we can use up to 30 speaker units per channel, and up to 120 speaker
system units for the total of four channels.
A combination of speaker systems with different rated input can also be connected.
* In consideration of impedance variance in the primary side of the transformer, future change in transformer
tap, and future addition of speakers, we recommend that you allow a margin of about 20%.
■ High-impedance connection example
4. Connections
16 | PC412-D PC412-DI PC406-D PC406-DI Owner’s Manual