Tannoy VX 12 Operation Manual - page 7
7. Crossovers and Bi-amp Configuration
VX Series Operation Manual rev 1.1.2
7
7. Crossovers and Bi-amp Configuration
VX Series loudspeakers are supplied as standard for passive operation via the internal crossover network.
If higher peak outputs and additional low frequency output is required, then the VX Series can be used in
conjunction with the Tannoy TX1 controller/crossover which provides high pass filtering and a degree of
parametric equalisation, as well as a fixed crossover point for use with sub-bass loudspeakers (See the TX1
Operation Manual for further information.) The Tannoy TDX2 Digital controller will also perform the above
functions with additional control and features including limiting and delay. (See the relevant literature on the
TDX2 for further information.)
The VX 12HP, VX 12Q, VX 12.2Q, VX 15HP, VX 15Q only also may be internally reconfigured for bi-amp
operation to supply greater system headroom. Reconfiguration is as follows.
First, remove the rear termination panel. It is secured with size M2.5 hex screws. Use the proper tool as
screws may be very snug.
In passive (default) mode, the internal wiring is as shown in Fig. 1, with the full range signal routed through the
internal crossover and divided into separate LF and HF signals using a four pole connector.
For bi-amp operation, reconfigure the internal wiring as shown in Fig 2. The two-wire connector leading to
the crossover is disconnected. The four-wire connector from the speakers now bypasses the crossover and
instead connects directly to the speakON® inputs, replacing the connector that previously led to the crossover.
For bi-amp operation, the speakON® connectors coming from the amplifier(s) must be wired as follows:
1 +
LF +
1 -
LF –
2 +
HF +
2 -
HF –
Note that the barrier strip terminals are wired for passive full-range operation only.