OPERATION
DIP SWITCH SETTINGS (From left to right)
SOURCE 1
MIC 2
on
PHANTOM
POWER
PRIORITY
◗
2 1
not used
not used
• If a microphone requires phantom power, move the Mic channel’s corresponding
PHANTOM POWER switch to the up position. This applies 12 volts dc phantom
power to the indicated microphone.
• Mic 2 Priority; when in the up position, all program material on Mic 1 and
Sources 2 and 3 will be “ducked” or muted when a signal is present at Mic 2.
Source 1 is left un-muted.
This function is used for paging.
• Source 1 Priority: when in the up position, Source 2,and 3 will be “ducked” or
muted by the signals at Source 1.
This function is for jukebox priority. With a jukebox connected to Source input 1,
and the Talkover switch 2 on, the other Source input signals such as background
music, will be muted and only the jukebox will be heard.
FAULT PROTECTION
The fault protection in the MA1705 limits the current to the output stage. This
mode is entered whenever the output stage is called upon for too much power, it
may also be fooled by impedances lower than four ohms - which may cause the
output stage to overheat and be irreversably damaged.
BURN WARNING!
THE FRONT PANEL OF THE MA1705 IS THE HEAT DISTRIBUTION FOR THE
OUTPUT STAGE. IF THE UNIT IS OPERATED AT HIGH VOLUMES, IT MAY
GET HOT.
CONNECTION
Inputs
Connect low impedance microphones to the Mic inputs. If a paging microphone is
being used, connect it to Mic Input 2 so it may be used with the Talk Over function.
Connect source signals such as CD players, cassette players or video players to
the RCA Source Inputs. If a jukebox is being connected, and you want its signal to
mute the other source signals, connect it to Source input 1.
For recording purposes, connect a stereo RCA cable to the Record Out jacks, and
to your recording device.
Amp Insert
To connect a signal processor to the MA1705 signal, use an insert plug, or cable
wired as shown in Fig. 1. This return signal is then sent to the output level section
of the amplifier.
Output
Connect 70 Volt speakers to the Output of the MA1705 by pressing in each of the
spring-loaded terminals and inserting the proper wire into the proper terminal i.e.;
+ = red, - = black.
Connect the MA1705 to a properly grounded AC outlet.
3
4
To Amp Insert
Fig. 1
