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5

Safety Instructions

1.  Read Instructions  - All the safety and operating instructions 

should be read before the product is operated.

2.  Retain Instructions - The safety and operating instructions should 

be retained for future reference.

3.  Heed Warnings - All warnings on the product and in the operating 

instructions should be adhered to.

4.  Follow Instructions - All operating and use instructions should 

be followed.

5.  Cleaning - Unplug this product from the power outlet before 

cleaning. Do not use liquid cleaners or aerosol cleaners.

6.  Water and Moisture - Do not use this product near water - for 

example, near a bath tub, wash bowl, kitchen sink or laundry tub; 

in a wet basement; or near a swimming pool; and the like. These 

precautions also apply to the power cord.

7.  Accessories - Do not place this product on an unstable cart, 

stand, tripod, bracket or table. The product may fall, causing seri-

ous injury to a child or adult and serious damage to the product. 

Use only with a cart, stand, tripod, bracket or table recommended 

by the manufacturer or sold with the product. Any mounting of 

the product should follow manufacturer’s instructions and should 

use a mounting accessory recommended by the manufacturer.

8.  Ventilation - This unit may be equipped with slots and openings 

in the cabinet (housing) which are provided for ventilation and 

to ensure reliable operation of the product and to protect it from 

overheating and these openings must not be blocked or covered. 

The openings should never be blocked by placing the product 

on a bed, sofa, rug or other similar surface. This product should 

be not placed in a built-in installation such as a bookcase or 

rack unless proper ventilation is provided or the manufacturer’s 

instructions have been adhered to. For products equipped with a 

separate power supply unit, leave at least 5cm (2in.) of free space 

on all sides and the top of the power supply.

9.  Power Sources - This product should be operated only from the 

type of power source indicated on the marking label (placed on 

the product and/or, if applicable, on a separate power supply 

unit). If you are not sure of the type of power supply in your home, 

consult your product dealer or local power company. For products 

intended to operate from battery power or other sources, refer to 

the operating instructions.

10.  Grounding and Polarity - some units for proper operation or 

to take full advantage of their capabilities may require to be 

connected to a grounded power outlet – refer to the user manual 

for more information. 

Some units may have markings for the live (L) and neutral (N) 

conductors for power - in order to take full advantage of capa-

bilities of such products, it is recommended to properly connect 

the polarity according to the markings on the unit - refer to the 

user manual for more information. Connecting the polarity not in 

accordance with the markings will not affect the durability and 

reliability of the device.

11.  Power-cord Protection - Power supply cords should be routed

      so that they are not likely to be walked on or pinched by items

      placed upon or against them, paying particular attention to cords

      at plugs, convenience receptacles and the point where they exit

      from the product.

12.  Lighting - For added protection for this product during a lighting 

storm or when it is left unattended and unused for long periods 

of time, unplug it from the wall outlet and disconnect the antenna 

or system cables. This will prevent damage to the product due to 

lighting and power-line surges.

13.  Overloading - Do not overload wall outlets, extension cords or 

integral convenience receptacles as this can result in a risk of fire 

or electric shock.

14.  Object and Liquid Entry - Never push objects of any kind into this 

product through openings as they may touch dangerous voltage 

points or short-out parts that could result in a fire or electric 

shock. Do not expose this apparatus to dripping or splashing and 

ensure that no objects filled with water, such as vases are placed 

on the apparatus.

15.  Servicing - Do not attempt to service this product yourself as 

opening or removing covers may expose you to dangerous 

voltage or other hazards. Refer all servicing to qualified service 

personnel.

16.  Damage Requiring Service - Unplug this product from wall outlet 

and refer servicing to qualified personnel under the following 

conditions:

•  when power supply cord or plug is damaged;

•  if liquid has been spilled or objects have fallen into the product;

•  if the product does not operate normally by following the oper-

ating instructions. Adjust only those controls that are covered by 

the operating instructions as an improper adjustment of other 

controls may result in damage and will require extensive work 

by a qualified technician to restore the product to its normal 

operation;

•  if the product has been dropped or damaged in any way;

•  if the product exhibits a distinct change in performance - this 

indicates a need for a service.

17.   Replacement Parts -  when replacement parts are required, be 

sure the technician has used replacement parts specified by the 

manufacturer or with the same characteristics as the original 

part. Unauthorized substitutions may result in fire, electric shock 

or other hazards.

18.  Safety Check - Upon completion of any service or repairs to this 

product, ask the service technician to perform safety check to 

determine that the products is in proper operating condition.

19.  Wall of ceiling mounting - The product should be mounted to a 

wall or ceiling only as recommended by the manufacturer.

20. Heat - The product should be situated away from heat sources 

such as radiators, heat registers, stoves or other products (includ-

ing amplifiers) that produce heat.

21.  [Refers to products equipped with vacuum tubes] Tube Cage 

or cover - For your safety and to protect the vacuum tubes this 

product may be equipped with the factory installed vacuum tube 

cage or cover. 

It is not recommended to remove the cage or cover unless it is 

required to change the vacuum tubes. 

When the cage or cover is removed - do not touch the vacuum 

tubes - they may be hot and burn the skin!

22. Operating Environment - Operating environment temperature and 

humidity of the unit: +5°C to +35°C (+41°F to +95°F); less than 

85% RH (cooling slots not blocked).

EN_safety_09-22

PACKAGING WARNING

The packaging may contain elements 

such as plastic, that 

should be kept 

away from small children

The thin foil or small elements can 

stick to the nose and mouth, or may 

be swallowed and prevent breathing.

Summary of Contents for Thunder SW-15D

Page 1: ...Active Subwoofers Thunder SW 15D Thunder SW 12D Instruction Manual Edition 09 2023 ...

Page 2: ...xtremely high volume levels The bass driver may operate in high amplitude ranges and quickly reacts on any changes in the audio signal structure The removable IEC power cable gives an option to upgrade your subwoofer with a premium audiophile power cable in any time The Thunder subwoofer delivers the most powerful deep bass with staggering definition location and dynamics never met at this price l...

Page 3: ...3 Contents Introduction 2 Safety Instructions 4 Unpacking the Subwoofer 6 Placement 6 Controls and Connections Rear Panel 7 Hooking Up The Subwoofer 8 Operation 11 Additional Information 13 ...

Page 4: ... POWER CORD CAUTION FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE THE FUSE IF THE UNIT IS EQUIPPED WITH A USER REPLACEABLE FUSE ONLY WITH THE SAME AMPERAGE AND VOLTAGE TYPE IN CASE WHEN THE UNIT IS NOT EQUIPPED WITH A USER REPLACEABLE FUSE REFER REPLACEMENT TO QUALIFIED SERVICE PERSONNEL WARNING THE UNIT MAY BECOME HOT ALWAYS PROVIDE ADEQUATE VENTILATION TO ALLOW FOR COOLING DO NOT PLACE T...

Page 5: ...ce receptacles and the point where they exit from the product 12 Lighting For added protection for this product during a lighting storm or when it is left unattended and unused for long periods of time unplug it from the wall outlet and disconnect the antenna or system cables This will prevent damage to the product due to lighting and power line surges 13 Overloading Do not overload wall outlets e...

Page 6: ...ot so critical as for speakers but there are general guidelines as shown below Placing the subwoofer in the center of the room usually gives less bass but with better precision and definition Placing the subwoofer near the walls usually gives more bass with quite good preci sion and definition Placing the subwoofer in the corners usually gives much amount of bass but with less precision and defini...

Page 7: ... High Input Speaker Connectors Left and Right 11 AC Select Switch 1 3 4 6 2 5 A blown fuse should be only exchanged for exactly the same type as originally used in this product 5 20 T8A 250V The Power Cable should be disconnected 8 7 9 10 11 Check Hooking Up The Subwoofer for more details Available controls and inputs as well as their placement on the rear panel may vary depending on the model The...

Page 8: ...interconnect RCA RCA interconnect Y type subwoofer interconnect RCA RCA subwoofer interconnect Before using the subwoofer for the first time Your subwoofer will typically be set at the factory to accommodate the electrical outlet voltage in your area However before using this subwoofer for the first time we recommend to verify that the AC Select Switch is set in the position which is compatible wi...

Page 9: ...t and the 1xRCA plug to the Left or Right Low Input on the rear panel III CONNECT USING SPEAKER OUTPUTS You can use regular speaker cables to connect the subwoofer with your audio equipment this process is the same as connecting stereo speakers Using the speaker cables connect speaker output connectors located on your audio equipment to the High Input Speaker Connectors Left and Right on the rear ...

Page 10: ...terconnect not supplied L R L R RCA outputs RCA RCA interconnect not supplied or Y type subwoofer interconnect not supplied HIGH INPUT SPEAKERS OUTPUT Speaker cables not supplied connection shown for 1 channel Bare wire Terminated with banana plugs External audio equipment connection options The sockets shown for external equipment and connection options may differ depending on the device 10 ...

Page 11: ...e the subwoofer This may void your warranty Operation Mode Switch The subwoofer is equipped with the auto audio signal detection feature When the subwoofer is turned on choose one of the three operating modes ON when the Power Switch is in the ON position the subwoofer will remain continuously turned on Auto Power when the Power Switch is in the ON position If no input audio signal is detected for...

Page 12: ...ossover Regulator until the frequency range of the subwoofer blends well with that of the front speakers and the rest of the system Setting the crossover at the too low level will create a gap between the frequency of the front speakers and the subwoofer Setting the crossover frequency too high will cause that certain frequencies will be duplicated or offset Using the CROSSOVER regulator at high v...

Page 13: ...en ON again in quick succession Follow this procedure each time you turn your subwoofer OFF ON This precaution will minimize the stress high voltages on internal components It is recommended to turn off the subwoofer when you intend not to use it for a longer period of time Noise floor It is a normal phenomenon that a built in amplifier may produce some amount of noise called noise floor or self n...

Page 14: ... to the appropriate collection point for the recycling of electrical and electronic equipment By ensuring that this product is disposed of correctly you will help to prevent potential negative consequences for the environment and human health which could be caused by inappropriate waste handling of this product The recycling of materials will help to conserve natural resources For more detailed in...

Page 15: ...Notes ...

Page 16: ...Notes ...

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