This is a safety installation or any area which is classified as a wet feature. If you are unable to insert the plug into the location. Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Page 3
Unauthorised substitutions may result in fire, electric shock or other hazards. 20 Safety Check - Upon completion of any service or repairs to the units, ask the service technician to Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Page 4
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Line input - loop through output ..........................21 6.1.6 70 V input ..................................21 6.1.7 Loudspeaker outputs 70 V* ............................21 6.1.8 Loudspeaker output 4 Ohm* ............................21 Mechanical ..................................... 22 Environmental ..................................22 Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Page 6
Plena Power Amplifier | Installation and User Instructions | Table of contents en | 6 Intentionally left blank Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Persons can be (severely) injured, or the equipment can be seriously damaged, if the alert is not Caution, Warning, Danger observed. Icon for risk of electrostatic discharge. • Danger Not observing the alert can result in death. Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
1.4: Conversion of units of temperature ° F = 9 . ( ° C + 32) ° C = 5 . ( ° F 32) ° F = ° C = Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Contents of box The packaging box contains the following contents: • PLE-1P120-US, or PLE-1P240-US • Power cord • Mounting brackets (LBC 1901/00) • XLR cable Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Page 10
VDC power from the 24 V input. Sensitivity Input 70 V 25 V 4 Ohm Loop through Limiter Temperature controlled fan figure 2. 1 : Schematic overview of the Plena Power Amplifier Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
1 Power button. 2 Output level meter (-18 db, 0 db). 3 Air inlet holes. Note Do not obstruct the airflow into the unit. 4 Headphone socket. figure 2.2: Front panel Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Input is wired in parallel with 70 V input 9 Mains connector (3-pole). (see number 2). The line input is combined with the loop through output (Euro style pluggable screw terminal connector). figure 2.3: Rear panel Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
3 Connect the power cord to the mains connector and plug it into the mains outlet. figure 3. 1 : Installing the unit in a rack figure 3.2: Power connection and voltage selector Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Page 14
Plena Power Amplifier | Installation and User Instructions | Installation en | 14 Intentionally left blank Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
12 VDC lead-acid batteries in series), the unit will operate on the supplied DC voltage. F U S 1 2 V 1 2 V figure 4. 1 : Connecting a DC power supply Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
4.2. To adjust the volume of the input signal, turn the input volume control (3) at the rear of the unit. figure 4.2: Connecting a 70 Volt input signal Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
The 70 V connection in shown in figure 4.3. Connect the loudspeakers in parallel and check the loudspeaker polarity for in-phase connection. The summed loudspeaker power should not exceed the rated amplifier output power. Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Page 18
Plena Power Amplifier | Installation and User Instructions | Connections and settings en | 18 Intentionally left blank Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
(see figure 5.1). 2 Set the power button (1) on the front of the unit to On - pushed in. figure 5. 1 : Voltage selector Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Page 20
Plena Power Amplifier | Installation and User Instructions | Operation en | 20 Intentionally left blank Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...
Approx. 12.5 kg Environmental Operating temperature -10 to +55 ºC Storage temperature -40 to +70 ºC Relative humidity <95% Acoustic noise level of fan <33 dB SPL @ 1 m temperature control Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en...