![background image](http://html1.mh-extra.com/html/ramsey-electronics/bn9/bn9_manual_3578026012.webp)
2. Intercom
Components required:
•
DPDT switch (momentary most practical)
•
Two 8 ohm speakers
•
Your choice of enclosures
IN
OUT
Low gain BN-9
Remote
Local
3. Mini public address amplifier
Components required:
•
8 Ohm PA speaker or horn speaker
•
5K to 100K Potentiometer
•
Electret microphone or other microphone
•
10K resistor for microphone
•
.01uF Ceramic capacitor