Lencore Spectra Classic: Installation and Operations Manual - Manual (Page 8)

common questions
LOUD NOISE COMING FROM MAIN (MASTER) AND SECONDARY
This means that there is a miswire. Go to Main and recheck wiring, as it probably is
a ground wire problem. Walk the area and listen for a loud humming sound. In many
cases, this will indicate which unit is miswired.
TRANSFORMER OVERHEATING ?
As in the above scenario, you have incorrectly wired unit(s) and need to search
out the source. Again, walk the area and listen for a loud humming sound. The Main
unit humming is the one wired incorrectly . Power half of the Mains, if the transformer
doesn’t overheat, the problem is in the other half. Check each of the remaining Mains
wires or split the area in half again. There is always a slight possibility that a Main
(master) has the short and it’s not the wiring.
NO SOUND IN AN AREA?
Check the wires as they may not be connected correctly or may not have good contact.
If that is not the case, you have a bad Main. Before you replace the Main, test a second
time with test cord and transformer separately.
IMPOSSIBLE TO HANG UNIT WHERE DRAWING SHOWS?
If an obstacle is in the way, move the unit to the nearest area on the drawing
where an obstacle does not exist.
HOW FAR ABOVE CEILING SHOULD UNITS BE HUNG?
The units should be reachable from a standard 6-8’ ladder. A minimum of 10” above the
ceiling tile is recommended. Most importantly, the units must be hung at a uniform
height throughout the space for correct tuning.
WHAT IF THE AREA TO HANG UNITS HAS A LIGHT OR GRATING?
Move to the next acoustical tile and hang the unit there. Always hang units over
acoustical tiles.
WHAT HAPPENS WHEN YOU HANG A UNIT CLOSE TO AN AIR RETURN OPEN GRILL
OR ANY AREA WHICH ALLOWS THE MASKING SOUND TO PASS FREELY THROUGH
WITHOUT THE CEILING TILE FILTERING THE SOUND?
Sound blends into the existing masking sound in the environment. By doing this
you have taken out the harsh sound that has passed through the ceiling unfiltered.
section 2
2.1 | troubleshooting
6