T-44/48 Series Amplifier
Operation Manual
T-44/48 Series | rev.
firm. 1.258 and above
12
The Speakon
TM
NL4 connector for amplifier channel 1 carries the output for amplifier
channels 1 and 2. Similarly, the Speakon
TM
NL4 connector for amplifier channel 3 carries the
output for amplifier channels 3 and 4. This can be useful for making a connection to two
loudspeakers with one 4-core cable (i.e. Bi-Amp):
On the T-48 model, all output are Bi-Amp; each Speakon
TM
connector carries two amplifier
outputs – Channels 1&2, Channels 3&4, Channels 5&6 and Channels 7&8.
Amplifier output connections – Bi Amp
2+
1-
1+
2-
Sp
Speaker1 -
Sp
Speaker2 -
Fig. 07: Amplifier Output Bi-amp connexion (CH1 & CH3) and T-48 models
In addition, the channel 1 or channel 3 connector can also be used if the pair of amplifier
channels is being operated in bridged mode.
Amplifier output connections – Bridge
2+
1-
1+
2-
S
Speaker -
Fig. 08: Amplifier Output Bridge connexion (CH1 & CH3)
1.6.3 Load Matching / 100/70/25V Line operation
Each output of the device can be configured to drive either a low impedance load (LOW-Z),
or a Constant Voltage (CV) such as 25V LINE, 70V LINE or 100V LINE using the CV parameter
in the Output menu which determine the maximum RMS voltage that the amplifier will produce.
Select the one which is appropriate for the installation. A number of low impedance settings
(depending on the model) are also available. Although it is not critical that this setting matches
the impedance of the connected load, this will maximise the power that is available for the load.
and T-48
