User Manual
  26
8.  TROUBLES AND SOLUTIONS 
If the problem is…  Ensure to check that…
LED does not light when POWER 
switch is ON. 
• Plug is connected . 
• Fuse status. 
No Ventilator action. 
• Plug is connected . 
• Fuse status. 
No sound. 
• Inputs are correctly selected. 
• Loudspeakers are correctly connected . 
Intermittance output signal with noise i. 
• The power supply voltage is correct. 
The output is not present on one or 
more channels . 
•  cables and loudspeakers line. 
• The pilot signal level is appropriate . 
CD Display is not ON. 
• CD switch is ON. 
NO CD output signal 
• CD is clean and without defect. 
The radio signal output is distorted, 
with interferences and low volume 
level 
• Antenna is correctly connected 
• Antenna is correctly oriented. 
• Antenna is suitable for the radio station receipt. 
The radio output signal with 
intermittances and noise . 
• It can be linked to lighting systems or electrical apparatus set closet to the unit. 
The led level indicator is ON ma there 
is no signal in output. 
• Switch off the unit for some seconds to reset the protection circuit and power 
then ON the unit. 
• All conncections status. 
• If the problem persists, revert to authorized and qualified person for service 
purposes. 
(ER..) Error Message present on the 
display  
• Close and open CD window 
• Reduce to the minimum the volume, Switch Off for some seconds and power ON 
the unit. 
• If the problem persists, revert to qualified and authorized person for service 
purposes. 
9. TECHNICAL CHARACTERISTICS 
MODEL 
A
CDT180
Output Power RMS  180/240MAX 
Inputs 
4 x MIC.balanced  1,5mV/600ohms ( with 48V Phantom) 
LINE  100mV - 5Kohms 
AUX/TUNER/TAPE/CD  150mV/10Kohms 
Telephone/Emergency  Variable gain - 600ohms 
Frequency range (+/- 3dB)  50 -16,5KHz 
Tone Control  Low/High 
Outputs 
Speakers  100/70/50V - 16/8/4ohms 
Pre OUT/Main IN 
I1 V/600ohm - 1 V/10Kohms 
THD distortion  <0,5% @ (Pnom. 1Kz) 
S/N Ratio  >80 dB 
Power Supply  230/117Vac-50/60Hz 
Ambient temperature  0 - 40 °C 
19” Rack Dimensions (WxHxD)  483 x 88 x 380 
Weight  13 Kg 
Input/output connectors 
Microphone  4 x XLR and 6,3mm jack 
Line IN/Main IN-OUT  1 x RCA L/R each 
AUX  1 x RCA L/R each 
Others in/out  screw terminals 
Proel SpA pursue a policy of continuous research and development. Proel SpA reserve the right to modify product circuitry and 
appearance at any moment, without prior notice .   REV: 01 / 37-10 










