Car Speaker User Manual
4 RCS In-Ceiling Manual Earthquake Sound Corp. | www.earthquakesound.com
Unpacking System Components
• Keep the  original  carton  and packing  materials  for  future shipment  or 
storage.
• Check  for  any  visual  signs  of  damage.  If  you  encounter  any  concealed 
damage, consult your Earthquake Sound dealer before proceeding with unit 
installation.
• Retain the sales receipt as it establishes the duration of the limited warranty 
and provides information for insurance purposes. 
System Installation Considerations
There  are  several  factors  to  consider before  installing  Earthquake  Sound’s 
RCS In-Ceiling Speakers.
• What are the intended listening zones?
• What system options and accessories might be required for features such 
as local sources, etc.?
• From where in each zone will the listener prefer to control the system? Where 
will the remote gains be located? Where will the speakers be located?
• Where will the source equipment be located?
Connection Tips
• Keep all power cords away from all signal cables to prevent humming from 
induced noise.
• Choose reliable  signal cable cords (Earthquake Sound  also specializes in 
high-performance RCA cables and patches).
• All speaker wires that are ran through the walls should be twisted to reduce 
potential hum noise pick up.
• Label both ends of all wires with the corresponding room location.
• It is best to use a grounded electrical outlet to power the amplifier. Lack of 
input ground reference could be unsafe. Consult your electrical contractor 
about proper grounding.










