K-ARRAY Rumble-KU315 Ultra Thin Passive Subwoofer User Guide
- June 13, 2024
- K-ARRAY
Table of Contents
K-ARRAY Rumble-KU315 Ultra Thin Passive Subwoofer
Product Information
- Product Name: Rumble-KU315
- Description: Ultra-thin passive subwoofer with 3×15 cone drivers
Product Usage Instructions
Unpacking
Upon receiving the Rumble-KU315 subwoofer, carefully inspect the shipping
carton for any damage. Then, examine and test the device. If you find any
damage, immediately notify the shipping company.
- Package Contents:
- 1x Rumble-KU315 subwoofer
- 1x NL4 SpeakON connector
- 1x IP65 rubber protection seal for NL4 connector
Rear Panel
The rear panel of the Rumble-KU315 subwoofer features a single SpeakON
connector.
Installation
The Rumble-KU315 subwoofer is designed for outdoor applications and is
equipped with a high-quality rubber protection piece (K-IP65KITB). This rubber
piece is essential for preventing water and salt from seeping into the cable.
To install the IP65 protection:
- Ensure you have all the supplied components.
- Follow the provided procedure to install the IP65 protection.
Service
If you have any questions or require assistance with your Rumble-KU315
subwoofer, please contact K-array customer service at
[email protected] or reach out to the official
K-array distributor in your country.
IMPORTANT SAFETY INSTRUCTIONS
This symbol alerts the user to the presence of recommendations about the
product’s use and maintenance.
The lighting flash with arrowhead symbol within an equilateral triangle is
intended to alert the user to the presence of uninsulated, dangerous voltage
within the product enclosure that may be of magnitude to constitute a risk of
electrical shock.
The exclamation point within an equilateral triangle is intended to alert the
user to the presence of important operating and maintenance
(servicing) instructions in this guide.
Operator’s manual; operating instructions
This symbol identifies the operator’s manual that relates to the operating
instructions and indicates that the operating instructions should be
considered when operating the device or control close to where the symbol is
placed.
For indoor use only
This electrical equipment is designed primarily for indoor use.
WEEE
Please dispose of this product at the end of its operational lifetime by
bringing it to your local collection point or recycling center for such
equipment.
This device complies with Restriction of Hazardous Substances Directive.
WARNING
Failure to follow these safety instructions could result in fire, shock or
other injury or damage to the device or other property.
General heed and warnings
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Read these instructions.
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Keep these instructions.
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Heed all warnings.
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Follow all instructions.
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Do not use this apparatus near water.
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Clean only with dry cloth.
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Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
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Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat
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Do not defeat the safety purpose of the polarized or grounding plug. A polarized plug has two blades with one wider than the other. A grounding plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
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Only use attachments/accessories specified by the manufacturer.
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Protect the power cord from being walked on or pinched particularly at the plugs, convenience receptacles, and at the point where they exit from the apparatus.
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Clean the product only with a soft and dry fabric. Never use liquid cleaning products, as this may damage the products cosmetic surfaces.
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Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
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Unplug this apparatus during lightning storms or when unused for long periods of time.
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Avoid placing the product in a location under direct sunlight or near any appliance that generates UV (Ultra Violet) light, as this may
change the product surface finishing and cause a change in color. -
Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
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CAUTION: These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so.
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WARNING: Only use attachments/accessories specified or provided by the manufacturer (such as the exclusive supply adapter, battery, etc.).
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Before turning the power on or off for all devices, set all volume levels to minimum.
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Use only speaker cables for connecting speakers to the speaker terminals. Be sure to observe the amplifier’s rated load impedance particularly when connecting speakers in parallel. Connecting an impedance load outside the amplifier’s rated range can damage the apparatus.
This apparatus is intended for professional use.
Installation and commissioning may only be carried out by qualified and
authorized personnel.
- K-array cannot be held responsible for damage caused by improper use of the loudspeakers.
- K-array will not shoulder any responsibilities for products modified without prior authorization.
CE Statement
K-array declares that this device is in compliance with applicable CE
standards and regulations. Before putting the device into operation, please
observe the respective country-specific regulations!
FCC Statement
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more
of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Canadian Statement
This device complies with Industry Canada’s licence-exempt RSSs. Operation is
subject to the following two conditions:
- This device may not cause interference, and
- This device must accept any interference, including interference that may cause undesired operation of the device.
The device meets the exemption from the routine evaluation limits in section
2.5 of RSS 102 and compliance with RSS-102 RF exposure, users can obtain
Canadian information on RF exposure and compliance.
This equipment should be installed and operated with a minimum distance of 20
centimeters between the radiator and your body.
Trademark Notice
All trademarks are the property of their respective owners.
Thank you for choosing this K-array products!
To ensure proper operation, please carefully read the owner’s manuals and
safety instruction before using the products. After reading this manual, be
sure to keep it for future reference.
Should you have any questions about your new device please contact K-array
customer service at [email protected] or contact the official K-array
distributor in your country.
The Rumble-KU315 is the most powerful passive subwoofer in the Rumble series,
with a nominal rated power of 2000 W at 4 Ω. Made from water-resistant
polyurea-coated birch plywood, this ultra-thin subwoofer features a 1x 15”
neodymium transducer in a shallow and relatively slim box and is certified for
marine applications.
Unlike other subwoofers, the KU315 doesn’t have reflex openings but instead
features two more 15” passive radiators that ensure the transducer excursion
is as linear as possible with minimum residual noise. This design, along with
durable materials and an upgrade to the SpeakOn NL4 connector, makes the
Rumble-KU315 resistant to tough weather conditions and suitable for outdoor
installations.
Key Features
- Compact and closed enclosure
- 1×15” woofer and 2×15” passive radiators
- Durable and resistant frame
- Extreme power and High SPL
- Extended frequency response in bass range
Applications
- Outdoor applications
- Marine applications
- Theaters
- Clubs and Lounges
Finishes
- Rumble-KU315 black model
- Rumble-KU315W white model
- Rumble-KU315X customized color (box + grille)
Unpacking
Package Contents
Each K-array product is built to the highest standard and thoroughly inspected
before leaving the factory.
Upon arrival, carefully inspect the shipping carton, then examine and test
your new device. If you find any damage, immediately notify the shipping
company.
- 1x Rumble-KU315 subwoofer
- 1x NL4 SpeakON connector
- 1x IP65 rubber protection seal for NL4 connector
The Rumble-KU315 enclosure is constructed from durable aluminum and features a fully sealed design. Its grille is specially treated to resist even the harshest weather conditions, including exposure to salt and water. As a result, the Rumble-KU315 is ideally suited for outdoor installation in extreme environments or marine settings.
Rear Panel
1x SpeakON connector is situated on the rear panel of the subwoofer as is
shown in the picture below.
One-channel wiring
- 1+ 1- signal
- 2+ 2- (not connected)
IP65 protective seal
Installation
The Rumble-KU315 is extensively used in outdoor application and comes equipped
with a high-quality rubber protection piece from the K-IP65KITB. This
protective rubber piece is essential as it’s installed on the input connector
to prevent water and salt from seeping into the cable and, in conjunction with
a provided gasket, effectively seal the input port.
To install IP65 protection please follow the procedure shown below:
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Before proceeding, ensure that you have all the supplied components of the SpeakOn NL4 connector and of IP65 protection (rubber cable cover and gasket).
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SpeakON connector components
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rubber cover and gasket
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Choose a cable with a sheath for greater insulation and pass it through the rubber cover accessory and trough the cable gland.
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Connect the wires to 1+ 1- terminals of the NL4 connector
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Ensure that the gasket firmly adheres to the connector on the back panel. To do so, first, pass it around the head of the male connector to be plugged in.
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Then plug the connector to the subwoofer and turn it clockwise together with the gasket to ensure a secure connection.
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The Rumble-KU315 is finally installed with IP65 protection accessory and sealed against water.
Rigging / Suspension
The Rumble-KU315 subwoofer can be suspended independently. Screw at least four
M8 eye bolts (two per side) at the sides of the unit and hang it to the
rigging point.
Settings
Recommended amplifier unit
The Rumble-KU315 passive subwoofer should be paired with any K-array
amplifier, such as Kommander-KA208 or Kommander-KA104, that matches its power
handling and impedance requirements.
Configuration
- Connect the Rumble-KU315 to the dedicated amplifier unit with the NL4 speakON connector
- Load the proper device preset (Rumble-KU315 natural preset).
- Test the system after settings to ensure it’s working correctly. Play audio and check for any issues or adjustments that may be needed.
Service
To obtain service:
- Please have the serial number(s) of the unit(s) available for reference.
- Contact the official K-array distributor in your country: find the Distributors and Dealers list on K-array website. Please describe the problem clearly and completely to the Customer Service.
- You will be contacted back for on line servicing.
- If the problem cannot be resolved over the phone, you may be required to send the unit in for service. In this instance, you will be provided with an RA (Return Authorization) number which should be included on all shipping documents and correspondence regarding the repair. Shipping charges are the responsibility of the purchaser.
Any attempt to modify or replace components of the device will invalidate your warranty. Service must be performed by an authorized K-array service center.
Cleaning
Use only a soft, dry cloth to clean the housing. Do not use any solvents,
chemicals, or cleaning solutions containing alcohol, ammonia, or abrasives. Do
not use any sprays near the product or allow liquids to spill into any
openings.
Mechanical Drawings
Technical Specifications
Technical specifications
Type| Passive subwoofer
Transducers| 1x 15” neodymium magnet woofer 2 x 15” passive radiator
Frequency Response 1| 35 Hz – 150 (-6 dB)
Max SPL 2| 137 dB (peak)
Rated Power| 2000 W
Coverage| Omni
Nominal Impedance| 4 Ω
Connectors| 1x SpeakON NL4 1+ 1- signal
Handling & Finishes
Material| polyurea coated birch plywood
Colors| Black, White, Custom RAL
IP Rating 3| IP64
Dimensions (WxHxD)4| (W x H x D): 1230 x 450 x 250 mm (48.4 x 17.7 x 9.8 in)
Weight| 40 kg (88.18 lb)
- With dedicated preset.
- Maximum SPL is calculated using a signal with crest factor 4 (12dB) measured at 8 m then scaled at 1 m.
Designed and Made in Italy
K-ARRAY surl
Via P. Romagnoli 17 | 50038 Scarperia e San Piero – Firenze – Italy
ph +39 055 84 87 222 | [email protected]
www.k-array.com