User Manual

VORTEX
SILVER SERIES
In A
In B
V8
In A
In B
V8
In A
In B
V8
180°180°
USER MANUAL
VORTEX SILVER SERIES V8
P.15
3.6.2 Dual Channel Operation
Two fully independent amplifier channels (aka “Stereo” – normal operating
mode).
Zmin = 2 Ω for Dual Channel operation
3.6.3 Parallel Mono Operation
Parallel operation of both amplifier channels.
Zmin = 1 Ω for Parallel Mono operation
The amplifier outputs of the two channels are switched together (in paral-
lel) using an internal relay. This effectively doubles the current capability of
the amplifier, allowing to connect lower output impedances.
In this mode only the channel A input signal is fed to both amplifiers. The
channel B input signal is not used / ignored.
The loudspeaker loads can then be connected to either the channel A
or the channel B output SPEAKON
®
connectors (we still recommend to
always use both). This mode is useful when for example 3 identical loud-
speakers are to be operated with the same power.
When connecting speaker cabinets in parallel, always use both
SPEAKON
®
connectors where possible for current sharing. Not doing
so may cause permanent damage to the connectors and may consid-
erably reduce performance.
3.6.4 Mono Bridge Operation
One-channel mono bridged operation.
Zmin = 4 Ω for Mono Bridge operation
In this mode the channel B amplifier stage processes the identical input
signal than channel A, but with reversed phase.
The loudspeaker load must then be connected between the two posi-
tive channel outputs (pin 1+ and pin 2+) using a specially configured
SPEAKON
®
connector / cable. This effectively doubles the maximum out-
put voltage. But please note that this also doubles the minimum allowed
loudspeaker impedance Zmin.
As in parallel mono operation, only the channel A input signal is fed to both
amplifiers. The channel B input signal is not used / ignored.
WARNING: In Mono Bridge Operation RMS output voltages can be as
high as 280 Vac. Wiring to the speaker loads must conform to NEC
Class 3 safety standards or its equivalent that meets all national and
local electric codes. All customer specific cables may only be manu-
factured by qualified suppliers / personnel. All cabling or rewiring
work must be carried out by qualified personnel.
3 INSTALLATION