EQ52 Owner’s Manual
5/2021
20
CARE AND MAINTENANCE
1. Cleaning
Avoid solvents or chemicals that may dissolve the silkscreen text on the front and back
panels.
TROUBLESHOOTING
1. Power does not turn on
First verify that power is being applied to the module by engaging the EQ In function. It
has a Green LED that illuminates when the EQ is engaged. If this LED does not come
on, verify that the 500-rack has power applied and is switched on. Check the rack AC
fuse.
2. Audio Sounds Distorted
Check the level being applied to the EQ52. 0dBu (-4VU) is the best nominal audio level
to use with the EQ52. The See-Saw filter can realize 8 dB gain when adjusted to its
extremes. If EQ52 input levels exceed 12 dBu, it is possible that the audio is being
distorted if extreme See-Saw filter settings are being used.
If distortion cannot be attributed to signal levels or filter settings, check the integrity of
the 500-series rack power supply. If these tips do not solve the problem, investigate
other system equipment, then contact Ingram Engineering.
3. Hum or Buzz is Audible
Check the integrity of the system cables. If the 500-Series rack includes a ground lift for
the balanced audio cable, try lifting the ground. Check the integrity of the 500-Series
rack power supply.
