1
Operation Manual
Model: LA-75
L A S eries
952.859
LOOP AMPLIFIER LA-75
CH 1
CH 2
BASS
TREBLE
LOOP CURRENT
P OWE R
SIREN
AMP
4.6
4.0
3.3
2.7
2.0
1.3
< 0.7
INPUTS
P
E
A
K
C
U
R
N
T
Ref. No. 952.859
Страница 1: ...1 Operation Manual Model LA 75 LA S eries 952 859 LOOP AMPLIFIER LA 75 CH 1 CH 2 BASS TREBLE LOOP CURRENT POWE R SIREN AMP 4 6 4 0 3 3 2 7 2 0 1 3 0 7 INPUTS P E A K C U R R E N T Ref No 952 859 ...
Страница 2: ...IC LINE 8 POWER switch 9 FUSE HOLDER for Mains Fuse only replace a blown fuse by one of the same type 10 MAINS INPUT for Mains Connection 230V 50Hz via attached mains cable 11 LOOP OUTPUT hole is provision to take out wires from terminal block CON6 inside the unit on Main PCB for connection of the inductive loop also to make the connection for an external momentary push button closing contact or s...
Страница 3: ...Inductive sound reproduction systems are used for various applications e g as an aid for persons hard of hearing in churches theatres cinemas waitingrooms meetingrooms asinterpretinginstallations forlecturesinmuseums exhibitions etc Ininductivesoundreproductionssystems aninductionloopistriggeredwithaconstantcurrentamplifier Aninduction loop consists of a wire winding laid into the floor into the w...
Страница 4: ...el Ifyouareusingbothinputsthelevelcontrolsactsasasimplemixer 8 Adjust the drive control until the required current peak is produced Care should be taken when doing this to ensure thecurrentiswithintherecommendedratingofthecable Theaveragecurrentoutputshouldbeapproximatelyone quarter of the maximum peak 9 Usinganinductionloopreceiverlistentothesignalinsidetheloop Itisadvisabletocheckthesystemwithaf...
Страница 5: ...TY to position LINE 1 Prior to switching on turn the controls INPUT 1 to 2 1 and LOOP CUR R E NT 3 to the leftstop 2 Feed a signal TestS ignal Music Piece or Microphone announcement to allconnected inputs 3 S witch on the amplifier with the POWE R S WITCH 8 After switching on the R E D LE D 6 lightup 4 S lightly turn upthe controlLOOP CUR R E NT 3 so thata signalcan be received in the loop 5 Contr...
Страница 6: ...RNING ToswitchonthetalkoverfunctionorMetallosscorrection alsotoconnect inputs outputs theunitmust beopened Thismustonlybemadebyqualifiedpersonnel Thismaycauseanelectricshockhazard 1 Disconnectthemainscordfrommainsplug 2 Screwoffthehousingcover 3 T oactivatethetalkoverfunction placejumperJMP3topositionON 4 T oactivatethefunctionMETAL LOSSCORRECTION placethejumperJMP4 topositionON 5 T ightlyscrewthe...
