user manual
TA-890
Voltage Setting
Your models will be set up at the factory for correct operation on your local voltage supply. No further adjustment is necessary.
Voltage Range
The minimum supply voltage over which the amplifier will operate is 180V for the
The maximum supply voltage which exceeds safe limits and causes the amplifiers to switch- off is in excess of 260 V for 220/240 V range, and 130 V for the 108/120 V range. This is however dependent on load impedance and program drive level as mentioned above.
Obviously, the mains voltage will reach these limits only in exceptional circumstances and the A/P (Audio Protect) LED will then flash.
Audio Connections & Controls
The amplifiers’ actively balanced,
The incoming
Pin 1 | Screen - connect to shield |
Pin 2 | hot (signal +) |
Pin 3 | cold (signal |
The shield connection to pin 1 at each amplifier input must be maintained under all circumstances, as TURBOSOUND will not be responsible for consequential damage arising to loudspeakers, etc., should this connection not be made.
The amplifiers are designed to operate with fully balanced equipment. Ground loops or loss of performance may be experienced if connected to unbalanced sources. If it is unavoidable, however, the following wiring convention should be used.
