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DIAGRAM 1: MULTIPLE SPEAKER CONNECTION.
3.3 JUMPERS.
P3
- This sets the type of microphone used on
MIC1
(only). Set the shunt block across pins 1 and 2 (default) when
using an electret microphone (Eagle Model 2101). When using an amplified microphone, set the shunt block across
pins 2 and 3.
If your unit was shipped with a jumper wire in place of the header,
MIC1
is set for use with an electret microphone
(Eagle Model 2101). If it is desired to use an amplified microphone, cut the jumper.
3.4 ADJUSTMENTS/INSTALLATION.
SPK
- Used to adjust the gain of the speaker during "Two Way VOX" mode only; CCW - increases gain; CW -
decreases gain. Use an amply rated speaker, 1 watt or more (Eagle Model 2150 or equivalent).
MIC
- Used to adjust the gain of the microphones during "Two Way VOX" mode only; CCW - increases gain, CW -
decreases gain.
3.5 MICROPHONE AND SPEAKER INSTALLATION.
3.5.1 LOCATION.
A microphone and speaker can cover a range of up to 2500 square feet. This is dependent on the environment in
which they are installed. Installation is recommended at or near system keypads with a minimum of one per floor,
excluding basement.
3.5.2 SEPARATION.
It is required to install the microphone and speaker no less than three (3) feet from one another. This will prevent any
feedback in the Two Way VOX mode.
3.5.3 QUANTITY OF MICROPHONES AND SPEAKERS.
Microphones.
The Model 1241 is designed to handle up to four microphones (one per input). If additional
microphones are required they may be installed in a parallel configuration. If this is utilized, it is recommended to
configure ALL used inputs the same (all single or all double). This will prevent unbalanced inputs. Inputs not used
should have no connection.
2 Speakers
16 Ohms Total
Resistance
Resistance
8 Ohms
8 Ohms
8 Ohms
8 Ohms
8 Ohms
8 Ohms
CAUTION! - Microphone(s) and speaker(s) must be mounted a minimum of three feet from each other or
feedback may occur.
