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Troubleshooting Guide
Symptom
(working state)
No signal (LED off)
No signal (LED red)
No signal (LED green)
Output level too low
(speaker cable)
Output level too low
(RCA jack, 1 ch.)
(RCA jacks, stereo or with
bridge)
Max. output too low
(open air party, dry
placement!)
Max. output slightly too low
(living room)
Uneven sound
Sound in lower voice range
somewhat thin, but bass is
rather thick
Sound with loud tracks
somewhat distorted
(especially in surround
mode)
Loud buzzing noises
(RCA-interconnect)
Soft hum
(during pause)
Possible cause
no mains connection
mains fuse blown
Power mode switch "OFF"
No input signal
Auto start not working
Speaker and Line level
inputs used at the same time
One channel inverted
short RCA-link L-R not
inserted
Source output level is too
low (pre-amp, surround
decoder)
Subwoofer is too small
Placement of subwoofer is
too "open"
Polarity not ideal
High pass filter of ELAC
SUB 101 ESP for main
speakers is not ideal
Overload of main speakers
and their power amp
Overload of center or effect
speakers and their power
amps
Contact problems with RCA
interconnect
(adapter for extensions)
Hum from Source,
ground loop with RCA multi-
connections
Check mains plug and socket
Check/replace mains fuse
Change power mode to "AUTO" or "ON"
Check input connections, exchange RCA
interconnects, check source signal
Service through your dealer
If speaker level inputs are used, RCA jacks must be
open (and vice versa)
Disconnect one channel, is the bass level now
higher?
Connect 2nd channel again, but now intentionally
inverted.
Check cables for polarity error
Use (short) RCA interconnect
Increase output level of preamp (min. 0.2 volts are
needed), reduce power amp gain for compensation,
or reduce gain for main (center, effect) speakers
slightly, for compensation increase master volume
Use 2 to 4 units, place in front of a wall, increase
"CROSSOVER FREQUENCY"
Place subwoofer in front of a wall or in a corner.
Use a 2nd ELAC SUB 101 ESP.
Switch "POLARITY", if no significant difference is
obtained, move subwoofer 0.5 - 2m and repeat.
Connect main speakers directly to power amp
reduce "SUBWOOFER LEVEL", optimise
"CROSSOVER FREQUENCY" and "POLARITY".
Connect main speakers not directly to main amp,
but to ELAC SUB 101 ESP "SPEAKER LEVEL
OUT"
Reduce center or effect level at surround decoder.
Use center mode "Normal".
Check all connections. For acoustic monitoring of
bad faults, reduce the level at ELAC SUB 101 ESP
to -30 dB. Perhaps the outer rings of RCA plugs
have to be adjusted.
Check ELAC SUB 101 ESP for inherent hum:
power mode switch to "OFF", disconnect all inputs,
switch to "ON", controls as in normal use.
With the ear near the speakers there should be a
soft hum, but none at the listening location.
9
Remedy
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