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CT-8 / 10 / 12 / 15 Full Range Loudspeakers

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For more details (UK), check The Control of Noise at Work Regulations 2005.

Noise Level (dBA)

Maximum Exposure Time per 24 Hours

85

8 hours

88

4 hours

91

2 hours

94

1 hour

97

30 minutes

100

15 minutes

103

7.5 minutes

106

3.7 minutes

109

112 seconds

112

56 seconds

115

28 seconds

118

14 seconds

121

7 seconds

124

3 seconds

127

1 second

130-140

less than 1 second

140

NO EXPOSURE

Maximum Recommended Noise Dose Exposure Levels

3. Important safety instructions

1.  Read this manual

2.  Heed all safety warnings

3.  Follow all instructions

4.  The user should never incorporate equipment or accessories not approved by Ohm

5. Safety 

warnings

Sound systems are capable of producing high sound pressure levels which can lead to a 
hearing damage especially in long term exposition.

To prevent damage to hearing avoid being too close to speakers in operation.

The generally accepted standard to minimize hearing risk is based on an exposure to 

              

85 dBA for a maximum limit of eight hours per day, followed by at least ten hours of recovery 
time at 70 dBA or lower (at which the risk of harm to healthy ears is negligible). Then 

            

a “3 dB exchange rate” formula is applied, which means that for every 3 dB above 85 dBA, 
the maximum exposure time is cut in half. 

Noise levels above 140 dB are not considered safe for any period of time, however brief. For 
children, the World Health Organization recommends no exposure above 120 dB. 

Summary of Contents for CT-10

Page 1: ...t o t a l c l a r i t y s e r i e s m a n u a l C T m a i n s y s t e m s CT 10 CT 12 CT 15 for main systems and arrays...

Page 2: ...time of going to press The information has been carefully checked for accuracy however no guarantee is given with respect to the correctness Ohm UK accepts no responsibility for any errors or inaccura...

Page 3: ...carefully packaged prior to shipping If any damage has occurred to the packaging or the unit during transit please notify the delivery company as soon as possible Only the consignee can file a claim a...

Page 4: ...porate equipment or accessories not approved by Ohm 5 Safety warnings Sound systems are capable of producing high sound pressure levels which can lead to a hearing damage especially in long term expos...

Page 5: ...ot relieve the user of the duty to follow the given safety requirements and legal regulations All system components must be inspected before use in order to detect any possible defects Please refer to...

Page 6: ...tonal balance and transient response Used with the CS subwoofers these systems will provide a very high SPL with total clarity CT 8 CT 10 Key Features Technology Matching voicing with the CW cabinets...

Page 7: ...aluminium top hat CPFK recessed flying points CFEK set of three flying eyes ABS 1 adjustable stand bracket ABT 1 adjustable threaded spigot bracket LWB large wall bracket SS 1 speaker stand TP 1 adjus...

Page 8: ...chnicians Before any installation indoors or outdoors ensure all risk assessments required are carried out Any technicians responsible for assembling safe set up and use of the sound system on site mu...

Page 9: ...mpedance can be calculated with the following formula 6 1 Amplification There is no exact answer to the question of what amplifier size you should use for a loudspeaker The loudspeaker power rating in...

Page 10: ...audio signals should not be over driven If an Ohm power amplifier is overloaded at the output stage clipping the amplifier will activate a clipping warning signal The signal must be reduced as soon as...

Page 11: ...ast yearly All the transducers should be tested regularly to make sure they work as intended A sine wave sweep at approximately 10 of rated power will usually reveal possible transducers and enclosure...

Page 12: ...pression driver Passive requires active EQ 2 x 4 pole Speakon Connectors 504 mm x 290 mm x 226 8 mm 14 5 15 Black Available in white or Ral colours on request 6 x mounting points 3 to take flying eyes...

Page 13: ...oh ohm m co co u uk k 13 CT 8 Performance graphs diagrams CT 8 Drawing Impedance Response Frequency Response with active EQ E D I S T N O R F BACK BOTTOM TOP 47 5mm 452 5mm 101 6mm 500 0mm 504 0mm 290...

Page 14: ...oaded compression driver Passive requires active EQ 2 x 4 pole Speakon Connectors 574 mm x 320 mm x 260 mm 19 21 3 Black Available in white or Ral colours on request 10 x mounting points 5 to take fly...

Page 15: ...CT 8 10 12 15 Full Range Loudspeakers Version 2 0 ww www w oh ohm m co co u uk k 15 CT 10 Performance graphs diagrams CT 10 Drawing Impedance Response Frequency Response with active EQ...

Page 16: ...loaded compression driver Passive requires active EQ 2 x 4 pole Speakon Connectors 726 mm x 380 mm x 320 mm 28 30 2 Black Available in white or Ral colours on request 12 x mounting points 6 to take fl...

Page 17: ...CT 8 10 12 15 Full Range Loudspeakers Version 2 0 ww www w oh ohm m co co u uk k 17 CT 12 Drawing CT 12 Performance graphs diagrams Impedance Response Frequency Response with active EQ...

Page 18: ...loaded compression driver Passive requires active EQ 2 x 4 pole Speakon Connectors 806 mm x 450 mm x 430 mm 38 40 3 Black Available in white or Ral colours on request 12 x mounting points 6 to take f...

Page 19: ...CT 8 10 12 15 Full Range Loudspeakers Version 2 0 ww www w oh ohm m co co u uk k 19 CT 15 Drawing CT 15 Performance graphs diagrams Impedance Response Frequency Response with active EQ...

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