Telex CP 1200 Power AMP Output Connectors, Bridged Mode, GROUND-LIFT Switch, Mains Input

REAR PANEL

POWER AMP OUTPUT CONNECTORS

Power amp output connection for the two channels A (left) and B (right) is provided via SPEAKON-type output connectors.

A plastic cover to prevent inadvertent erroneous connection protects the BRIDGED OUT connector. Make sure to remove the cover only when actually operating the power amplifier in Bridged-Mode.

BRIDGED MODE

With the BRIDGED-MODE switch being engaged, using the channel A input for audio signal feed is mandatory, since input B provides no function. While the amplifier of channel A operates as usual, the audio signal is internally inverted and routed to the amplifier of channel B. Both amps – A and B – now work in push-pull operation to provide doubled output voltage at the BRIDGED-OUT connector.

The regular output voltage of each amplifier channel A / B is still present at the corresponding output connector CHANNEL A or CHANNEL B. However, us- ing these signals is not recommendable because of the aforementioned phase inversion. Operating the power amp in Bridged Mode with loads of 2ohms con- nected is not allowable.

CAUTION: Extremely high voltages might be present at the BRIDGED OUT connector during Bridged-Mode operation. The connected loudspeaker systems have to be capable of handling such high voltages. Please make sure that power handling specifications as stated in the docu- mentation supplied with your speaker systems match the specifications of the power amplifier.

GROUND-LIFT SWITCH

The ground-lift switch allows eliminating noise loops. If the power amplifier is operated together with other equipment in a 19“ rack-shelf, setting the switch to its GROUNDED position is recommended. If the power amplifier is operated together with appliances with differing ground potentials, set the switch to its UNGROUNDED position.

MAINS INPUT

Under normal circumstances, the mains fuse only blows in case of fault. Replacing the fuse is only permissible when using a new fuse of the same

type with identical amperage, voltage and blow characteristics. If the mains fuse blows more often, please contact an authorized service centre.

The high-performance mains cord supplied with your power amplifier complies to applicable safety regulations, plus that its diameter corresponds to the pow- capacity. Make sure to use the supplied mains cord for connecting the power amp

to the mains, if possible. Using mains cords with smaller diameters results in higher leakage and conse- quently reduced maximum power output capacity.

At 100V and 120V units the mains fuse is installed internally. This is fore safety reasons. In case of a blown mains fuse please contact a qualified service personnel for servicing.

8