OHM CT-10, CT-15, CT-12, CT-6, CT-26 User Manual

total clarity series

manual

CT main systems

CT-10, CT-12 & CT-15 for main systems and arrays

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

Version 2.0

www.ohm.co

2

Wellington Close • Parkgate • Knutsford

Cheshire • WA16 8XL • England

Tel: [phone] • Fax: [phone]

Email: [e-mail] • Website: www.ohm.co.uk

1. Introduction

Thank you for purchasing an Ohm loudspeaker.

To guarantee the best possible operating of the equipment and avoiding any malfunction of the
system, please read this manual carefully before use. For your own safety we recommend you
take the time to read all the warnings and precautions contained within this manual and study
the connection details to ensure correct usage and avoid any misuse which may invalidate your
warranty.

Record the model and serial number, found on the back of the unit, in the spaces designated on
the warranty card and also somewhere safe for future reference. Refer to the model and serial
number whenever you call upon your dealer for information or service on this product.

All information contained in this manual is based on information available at the 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 inaccuracies that may appear in this manual
or the information on any products described in it.

Technical specifications, dimensions, weights and properties do not represent guaranteed
qualities.

As manufacturers we reserve the right to make alterations and modifications within the constitution
of the law, as well as changes aimed at improving quality.

This manual does not include all of the details of design, production or variations of the
equipment. Nor does it cover every possible situation that may arise during installation,
operation or maintenance. If you need particular assistance beyond the scope of this
manual please contact your local dealer and if further assistance is require contact our
technical personnel.

Before setting up a system read this manual and its safety instructions and keep the
manual readily available on site.

If the product requires repair or if information about the warranty is needed, please contact
an approved Ohm distributor or the Ohm factory. The contact details are available on the Ohm
website.

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

Version 2.0

www.ohm.co

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2. Warranty

All Ohm products have 2 years warranty covering any faults in materials ormanufacturing. Warranty
does not cover any damage caused by using the products against Ohm UK’s recommendations.

1.1. Unpacking

Carefully open the shipping carton and check for any noticeable damage. Verify that all the items
are included, please contact your dealer if any parts are missing.

Every Ohm loudspeaker has been rigorously tested and inspected before being 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 against the carrier for shipping damage.

We recommend that you retain the original carton and packing materials for use should you
transport or ship the unit in future.

Declaration of CE Conformity

This equipment has been tested and found to
conform to the requirements of the:

EMC Directive 89/336/EEC,
Machinery Directive 2006/42/EC
Low Voltage Directive 2006/95/EC

and to the following standards:

EMC Emission EN55103-1 (1996)

EMC Immunity EN55103-2 (1996)

Electrical Safety EN60065 (1998)

Mechanical Safety EN ISO 12100-1 (2004)

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

Version 2.0

www.ohm.co

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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.

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

Version 2.0

www.ohm.co

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6. Speakers have a permanent magnetic field even when they are not operating. Magnetic
fields can cause faults for magnetic data media and monitors, therefore it is important to
keep all speakers always at least 1m away from these kinds of equipments.

7. Do not expose the product to long term moisture (rain, sea spray, shower or steam) or put
in direct contact or partially immersed in water.

8. System parts and rigging inspection
Be sure to follow the relevant national specifications, norms, and safety regulations. The
information described here does not 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 the “Care and Maintenance” section for more instruction.

Any parts showing any sign of defect must immediately put aside and withdrawn from use
to be inspected by qualified service personnel.

9. Mounting
Any mounting of the product should follow the manufacturer’s instruction given in this
manual, and should use a mounting accessory recommended by the manufacturer.

10. Condition which require immediate service
Servicing is required when the product has been damaged in any way such as:

• The product has been exposed to excess rain or moisture

• The product was dropped or the enclosure is damaged

• The product does not operate normally

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

Version 2.0

www.ohm.co

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CT main systems

CT-8, CT-10, CT-12 & CT-15 for main systems and arrays

CT-8, CT-10, CT-12 and CT-15 are the largest top cabinets in this range. Designed for both install
and mobile use these speakers offer great flexibility to suit even the most difficult applications.
Side walls with 20 degree wall angle together with 40 degree horizontal dispersion and the
rotatable horn allows true seamless point source arrays to be created easily with the innovative
flying system.

Phase and impedance corrected crossover networks are designed for high power applications
and the use of external EQ provides unrivalled 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.

• Rotatable 90 x 40 horn

• High SPL in a compact cabinet

Use For

Small and medium installs and AV

full range applications

Use With

Small to Medium CS subwoofers

Ohm controller & software is

required

Mounting Options

TH-1 top hat fitted as standard

Brownline compatible flying points

top, bottom and back

CT-12 & CT-15

Key Features / Technology

• True full range performance

• Rotatable 60 x 40 horn

• Full range for standalone use where
space is constricted

Use For

Installations & AV applications

requiring high SPL, wide and smooth

coverage

Use With

Large CS subwoofers

Ohm controller & software is

required

Mounting Options

TH-1 top hat fitted as standard

Brownline compatible flying points

top, bottom and back