APART PM1122 Instruction Manual Download Page 5

Instruction manual

PM1122

5

Introduction

•   After reading these pages, most of you will be able to connect 

sources and operate this unique pre-amp/mixer without 
further instructions. For more details, please take a look at the 
blockdiagram for better understanding and refer to the front 
and rear panel layout descriptions on the next pages.

•   The PM1122 features 5 mono mic/line balanced inputs with 

individual sensitivity, level and tone adjustment potmeters. Each 
mic input has its own phantom dipswitch at the back. Each mic 
input can be assigned to zone 1 and/or zone 2 outputs with 
dipswitches on the front of the preamp. 

Don’t use unbalanced 

sources in combination with phantom power turned on on 
the same channel !

 Every mic/line channel has its own signal/

clip led, it lights 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 (+ the adjustable chime) are all being 

mixed together to the mix mic output after passing through 
the adjustable noise gate. This circuit mutes the mic/line + the 
chime output signal mix output when no suffi ciently strong 
signal is present. The gate is active (closed) when the yellow led 
lamp next to the gate sensitivity knob is lit. Use the gate only 
to mute unwanted mic noise in your mic/line signal, it is not a 
“vox” or “voice over”circuit. Set the threshold until the gate 
“opens” when you are talking softly (not shouting !) into one 
of the connected mics or when a mono line signal is present or 
when the chime is activated (fi rst set the chime and mic levels 
to an appropriate level). The combined output is separately 
available at the rear of the device and allows you to use 

Summary of Contents for PM1122

Page 1: ...PM1122 Instruction manual...

Page 2: ......

Page 3: ...Instruction manual PM1122 3 PM1122 Manual...

Page 4: ...4 Pre amplifier...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

Page 18: ...18 Pre amplifier Blockdiagram...

Page 19: ...Instruction manual PM1122 19...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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