RCF SUB 18-AS 18" Active Subwoofer

Description
Tech Specs
Delivery & Returns

Description

The SUB 18-AS is a portable 18" high-power active subwoofer for live sound applications. It features a state-of-the-art transducer and a powerful 2200 Watts Class-D amplifier that delivers sound pressure levels up to 135 dB with exceptional headroom. Designed as the ideal complement for 10", 12" or 15" loudspeakers, it includes Bass Motion Control algorithm for extended bass response at any volume. The connection panel features mono/stereo Combo inputs, an XLR stereo link, and XLR crossover outputs. Rear panel controls include volume, polarity, and low-pass frequency selection. The rugged all-wood cabinet with scratch-resistant polyurea coating makes it durable, easy to carry and install securely. With its versatility, sound quality, and high power output, the SUB 18-AS is perfect for small to mid-sized venues and portable applications.

High-Power Transducer

Lightweight and powerful, RCF woofers are a reference in high performance. RCF Precision Transducers engineers have developed new specific magnet sizes and molds to optimize magnetic flux while maintaining a low weight. The 18", 4.0" voice coil magnetic circuit topology is capable of delivering the highest, balanced level of performance in three specific areas: maintenance of a consistent, high integrity magnetic flux gap, exceptionally low distortion and efficiently integrating the magnetic circuit in a minimum weight design. The T-pole design optimization generates the minimum amount of flux modulation in the magnetic assembly during typical voice coil movement within the gap.

Bass Motion Control

When searching for an extended bass with enhanced performance, RCF engineers found a way to remove the high-pass filter, replacing it with a forward-thinking approach. Introducing BMC (Bass Motion Control), the newly advanced woofer excursion management feature. The speaker equipped with BMC can handle the lowest audible frequencies without affecting the woofer stability, with extended linearity and better sound integrity.

The BMC method works by creating a complete map of the dynamic behavior of the woofer, to generate a custom algorithm that only limits over-excursions. This gives total freedom of signal reproduction to the transducer. When high-pass filters normally protect the woofer motion from becoming destructive but change the phase behavior, the new BMC algorithm breaks conventional rules.

The right drive to the beat

With 2,200W power, our Class-D amplifier is able to manage extreme sound pressure levels with an ultra-fast attack, realistic transient response, and very low heat loss. So energy-efficient that there's no need for a cooling fan. The amplifier is attached to a solid aluminum heatsink at the rear of the cabinet with no moving parts. The stereo input circuit with crossover features a low distortion design with an advanced safety limiter, maintaining the true character of the input signal at all levels. RCF amplifiers are designed according to EN62368-1 for maximum safety and present a Switch Mode Power Supply section joining high efficiency with minimum weight.

Tour-Ready Workhorse

The RCF cabinets are made of high-quality multi-ply hardwood coated with a black polyurea finish. The subs are stackable and light-weight, for easy set-up and tear down, thanks to the ergonomic handles. A pole receptacle on top and side allows the use of the box in various configurations. The powder-coated front grille integrates a special transparent-to-sound foam backing on the inside to further protect the transducers from dust.

Features

2200Watt
135 dB max SPL
35 Hz - 400 Hz frequency response
18" Woofer, 4.0" voice coil
Birch tour grade cabinet with polyurea coating
Mono/Stereo XLR/TRS combo In + Link, Stereo XLR Xover Out
Volume, polarity, and lowpass frequency selection

Why We Like This

The 18" woofer combined with a 2200W amplifier delivers strong, extended bass performance. Its flexible connectivity and mounting options make it a reliable choice for both mobile and installed systems.

FAQs

Q: What speakers pair well with this subwoofer?
It is designed to complement 10", 12", and 15" full-range speakers.

Q: Does it include crossover outputs?
Yes. It includes stereo XLR crossover outputs for system integration.

Q: Can it be used in different configurations?
Yes. It features pole mounting options on both the top and side of the cabinet.

Based in Chicago, IL, Gear Club Direct supports DJs, musicians, and audio professionals every day with reliable gear and knowledgeable service you can trust.

Tech Specs

Speaker Type:	Active Subwoofer
Enclosure Type:	Sealed
Total Output Power:	2200 W
Amplifier Class:	Class-D
LF Driver:	1x 18" / 45.7 cm Woofer
Frequency Range/Response:	35 Hz to 400 Hz
Maximum SPL:	135 dB
Protections:	Thermal
EQ & Filters:	No
Dynamic Processing:	Soft Limiter
Alignment Delay:	Yes: Delay Time/Distance is Unspecified
Digital Signal Processing:	No
Audio I/O:	2x Combo XLR-1/4" Input 2x XLR 3-Pin Output 2x XLR 3-Pin Thru
AC Power I/O:	1x VDE Input
Power Consumption:	2200 W
Mounting:	M20-Threaded Pole Socket
Handles:	2x Side
Dimensions:	27.3 x 27 x 19.9" / 693 x 685 x 505 mm
Weight:	98.1 lb / 44.5 kg

Delivery & Returns

At Gear Club Direct, we want you to be happy with your purchase. We understand that there are times when once a product is received, it may not be what you needed or wanted after all. So, we will gladly accept your qualifying return within 15 days of the delivery date. After 15 days of the delivery date, all sales are final.

The Return Process
Customers are required to obtain a Pre-Authorization to return any product. To submit a request for a return, simply log in to your account and request a return and one of our sales representatives will contact you within 24-48 business hours. If you do not have an account with us, please open a help ticket, providing as much detail as possible and whether you are requesting a refund or an exchange. READ MORE