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16

Pre-amplifier

16. 

 

Mic 1 to 5 phantom switch:

 fl ip down the dipswitch from 

channel 1 to 5 if you want to apply a 20 VDC phantom power 
to input 1 to 5. Don’t use unbalanced sources in combination 
with phantom power turned on on the same channel !

17.  Mic/line 1 to 5 sensitivity knobs:

 turn these knobs to adjust mic/

line 1 to 5 input sensitivity and gain: the signal/clip led present 
on mic/line input 1 to 5 is your guide: turn down the knob to 
the left fi rst, and gradually turn it to the right while you are 
speaking loudly in the mic or while the line signal is applied. 
When the signal/clip led turns red, you are overloading the 
input. Turn the knob to the left a little until the led doesn’t light 
up red anymore. Take your time to preset all mic/line inputs this 
way.

18.  Input 3 to 5 input blocks:

 connect your balanced mic or line 

signals on these euroblock connectors.

19.  Input 1 and 2 input blocks:

 connect your balanced mic or line 

signals on these euroblock connectors. Additionally connect 
the mic 1 and/or mic 2 switch(es) on these blocks to activate 
the chime and priority. These contacts can be used for inputs 
3-5 as well. Please note the priority system; the MIC1 contact 
will mute MIC2-3-4-5 + Music, and the MIC2 contact will mute 
Music (if dipswitch 4 is set).

20. 

 

Ground connector:

 connect your system’s ground or safety 

ground on this connector if this is not already done by 
mounting the unit in a properly grounded rack.

For additional functionality, there are also 2 open collector outputs at the rear controlled 
by the priority switch, one output per zone. They can only be used by qualifi ed 
technicians. Maximum sinkable current per output is 50 mA, maximum voltage is 24VDC. 
No AC voltages are allowed on these outputs ! In case of inductive loads such as relays, 
provide additional measures to avoid damage to the open collector outputs.

Содержание PM1122

Страница 1: ...PM1122 Instruction manual...

Страница 2: ......

Страница 3: ...Instruction manual PM1122 3 PM1122 Manual...

Страница 4: ...4 Pre amplifier...

Страница 5: ...hts green when a suffi ciently strong signal is present and turns red when the input is overloaded turn down the sensitivity adjustment at the rear to prevent unwanted overloads The 5 mic line inputs...

Страница 6: ...don t need the chime The rear priority dipswitches allow you to preset if line level mute per zone is activated yes or no in case a priority mic contact is activated Mono inputs are numbered from 1 to...

Страница 7: ...Finally there is the balanced emergency input with priority contact and adjustable input level Level is presettable at the rear only for safety reasons For remote control and local signal input there...

Страница 8: ...liminate unwanted noise or background noise coming through from your mic line inputs 4 Noise gate threshold set the knob to the off position if you don t want to use the noise gate Set the gate so tha...

Страница 9: ...turn the knob to darken the tone turn to the left or to brighten the tone turn to the right 10 Mic line 5 link level use this knob to adjust the mic line 5 level and or the link input 11 S C led sign...

Страница 10: ...ignal led this green led indicates that a signal is present on the right zone 1 output 20 Mic mix level knob turn this volume knob to adjust the microphone mix signal mic line 1 5 link input for zone...

Страница 11: ...d indicates that a signal is present on the left zone 2 output 28 Signal led this green led indicates that a signal is present on the right zone 2 output 29 Mic mix level knob turn this volume knob to...

Страница 12: ...cation can only be done by a qualifi ed technician To access the transformer locations remove the bottom and lid from the preamp On the componentside of the PCB you will fi nd 5 locations called IT1 t...

Страница 13: ...T2 C213 C215 MIC3 IT3 C44 C45 MIC4 IT4 C57 C58 MIC5 IT5 C85 C86 The suggested transformer s pin layout fits perfectly on the PCB After soldering the transformer from the soldering side please remove t...

Страница 14: ...kind of network compatible connectors 4 Zone 1 2 priority assign dipswitches set the zone 1 and or zone 2 dipswitch es to Y if you want priority mics to mute the line music signal on zone 1 and or zon...

Страница 15: ...nwanted mic noise and it is not a vox circuit 12 Line A to D stereo line level inputs these unbalanced cinch connectors accept stereo line level signals coming from music sources such as tuners or CD...

Страница 16: ...mic or line signals on these euroblock connectors 19 Input 1 and 2 input blocks connect your balanced mic or line signals on these euroblock connectors Additionally connect the mic 1 and or mic 2 swit...

Страница 17: ...Instruction manual PM1122 17 Please use the schematic shown below as a guideline...

Страница 18: ...18 Pre amplifier Blockdiagram...

Страница 19: ...Instruction manual PM1122 19...

Страница 20: ...alk 70 dB Max nominal gain 6 dB Max output voltage 19 dBV 9 V Insert pcb for signal processing Pcb ready processors optional Tone control zone 1 and 2 Bass 75 Hz 10 dB treble 10 kHz 10 dB Music and mi...

Страница 21: ...o 300mV 10 dBV Input mic line 1 to 5 impedance 1 2 k Input mic line 1 to 5 max input level 6 dBV CMRR 55 dB electronically balanced S N ratio 75 dB mic level 4 mV THD 0 09 Phantom power mic line 1 to...

Страница 22: ...ne wall control panel wired for 503 wall box PM1122R PM1122R with local input wired for 506 wall box PM1122RL 2 Zone interface control RS232 2 x 6 presets PM1122 INT Wireless receiver for PM1122 INT P...

Страница 23: ...rol with local audio input PM1122R Analog remote control PC software included with the PM1122 INT interface PM1122W W PM1122W SLV Ultra flat wireless control PM1122 INT 2 zone digital remote interface...

Страница 24: ...udioprof nv Industriepark Brechtsebaan 8 bus 1 2900 Schoten Belgium Company names product names and trademarks are property of their respective owners Apart Audio specifications are subject to change...

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