Sign In | Join Free | My
Guangzhou Hongxiang Audio Equipment Co.,Ltd
Guangzhou Hongxiang Audio Equipment Co.,Ltd RKB Audio-Your Reliable Manufacturer on sound system.
Home > Church Sound Systems >

4 Ohm 1800W RMS Church Sound Systems Dual 18 - inch Bass / Outdoor Subwoofer Speaker

4 Ohm 1800W RMS Church Sound Systems Dual 18 - inch Bass / Outdoor Subwoofer Speaker

Brand Name : RKB
Model Number : SB28
Certification : CE/RoHS/SGS
Place of Origin : Guangdong, China (Mainland)
MOQ : 8 pcs
Price : US $1 - 1,000 / Piece
Payment Terms : Western Union, MoneyGram, T/T, L/C
Supply Ability : 500 Piece/Pieces per Month
Delivery Time : 7-15 days
Packaging Details : 1) Carton; 2) Flight Case (Extra cost)
Components : 2x18" subwoofer
Frequency Response : 30Hz-250Hz( ± 3dB)
Rated Power(RMS) : 1800W
Peak Power : 3600 W
Impedance : 4 ohm
Protective Grill : Black Perforated Steel with Acoustic Fiber Inside
Enclosure Material : High-strength Plywood
Connectors : 1xNL4 Speakon
Dimensions : 1300*700*550mm
Net Weight : 90KG
Contact Now

4 Ohm 1800W RMS Church Sound Systems Dual 18 - inch Bass / Outdoor Subwoofer Speaker


High power double 18' subwoofer with very compact design
Can be used for both fixed installations and mobile applications
The horn loaded design guarantees a nice, punchy bass reproduction
Perfect for clubs, discotheques, stage, rental, Pro-DJ, ...
Very strong plywood enclosure with:
Durable, scratch resistant, painting
Integrated handles
Heavy duty rubber feet
Steel front grill
Fixing points on the back panel for optional wheels
Equipped with 2 high power 18" woofers
A perfect match with 2x RS-15 cabinets


The SB28 contains two 18'' direct radiating LF transducers integrated into a bass-reflex tuned enclosure. The specially designed 18'' transducers provide an exceptional cone excursion capability combined with low thermal compression even at the very highest operating levels. The bass-reflex vents feature a progressive profile allowing laminar airflow.

SB28 sub-woofer utilize two brand-special and long stroke woofers, its voice coil and magnetic circuits is double of normal sub-woofers, its 900W high power of each driver. There is no airflow noise which may occur in ordinary ones when working with ultra-high power.


1. Large outdoor live concerts performance

2. Mid-size and Small Venues

3. Small-scale stage performance

4. Night club, bar

5. Hall, Stadium, theater, Auditorium

6. Professionals and sound system hire companies

7. Other entertainment performance place


Component2x18" subwoofer
Frequency Response30Hz-250Hz( ± 3dB)
Max SPL134dB
Rated Power(RMS)1800W
Peak Power3600 W
Impedance4 ohm
Connectors1xNL4 Speakon
Enclosure MaterialHigh-strength Plywood
Cabinet FinishGermany Water Paint
Protective GrillBlack Perforated Steel with Acoustic Fiber Inside
Net Weight90KG

About RKB Audio:

Guangzhou Hongxiang Audio Equipment Co., Ltd. was founded in 2011 and located in Panyu District,Guangzhou.The factory has over 200 employees,whom are well experienced specializing in designing,developing and producing of professional speakers, passive line array speakers, passive two-way speakers, passive subwoofer speakers, professional amplifiers and other audio equipment.

Base on steady quality,competitive price,good service,we enjoy good market in domestic and oversea such as US and South America,Europe,Africa,South East Asia,Middle East,Australia.

With the great efforts of continuous improvement,development research by our well experience R&D persons,our factories always develops with a high starting point and high standards to achieve the market demand.We sincerely hope to cooperate with customers from all over the world.


Q1: Can you do OEM / ODM for customers?
A1: Of course, for the product design and package, our engineer can be design as your request, Any kind of logo printing or design are available.

Q2: Which exhibition do you attend?
A2: Prolight+Sound Guangzhou

Q3: Can I have one sample to test?
A3: Yes, if you need,we’ll try to provide you one sample before bulk order.

Q4: What is your warranty for your products?
A4: One year since delivery and 1% free spare parts(For speakers),And we can replace If the defective is confirmed to caused by our quality

Detail shows:

China Customized Inflatable Bumper Ball Game Bubble Adult Grass CE supplier

4 Ohm 1800W RMS Church Sound Systems Dual 18 - inch Bass / Outdoor Subwoofer Speaker Images

Inquiry Cart 0
Send your message to this supplier
Enter your email please.
To: Guangzhou Hongxiang Audio Equipment Co.,Ltd
Characters Remaining: (0/3000)
Inquiry Cart 0