What is the peak power rating of the RCF SUB 702-AS MK3?

The subwoofer is equipped with a Class D amplifier capable of delivering 1400 Watts of peak power. This high power output allows the 12-inch driver to reach a maximum SPL of 129 dB.

What kind of enclosure is used for this model?

The cabinet is constructed from rugged plywood. This material is chosen for its durability and superior acoustic properties compared to plastic alternatives, helping to reduce unwanted resonances.

What is RCF Bass Motion Control (BMC)?

BMC is an advanced excursion management system. It maps the movement of the woofer and prevents it from travelling too far, ensuring a more linear response and protecting the driver from damage.

Does the SUB 702-AS MK3 include a crossover?

Yes, it features an onboard stereo crossover with switchable frequencies. This allows for precise integration with different full-range speakers to create a cohesive sound stage.

What protection features are built into the amplifier?

The unit includes thermal and RMS limiting to prevent overheating and electrical damage. It also features a soft audio limiter to manage signal peaks and prevent audible clipping.

Is this subwoofer suitable for stereo setups?

Yes, it includes stereo inputs and a stereo crossover. This makes it easy to route both left and right signals through the sub before sending them to the top speakers, which can improve the stereo image.

How much does the SUB 702-AS MK3 cost typically?

The typical price range for this unit is approximately GBP 734. Prices may vary slightly depending on the retailer and current availability.

What size is the woofer in this unit?

The SUB 702-AS MK3 features a 12-inch high-power woofer. This size is ideal for users who need a balance between deep bass extension and a compact, portable cabinet.

Can I adjust the phase of the subwoofer?

Yes, the rear panel includes phase controls. This allows you to align the subwoofer's output with your main speakers to avoid frequency cancellation at the crossover point.

What type of housing design does it use?

It utilizes a bass reflex housing. This design helps to extend the low-frequency response and increase the punchiness of the bass output.

How does it compare to an 18-inch subwoofer like the QSC KLA181?

While an 18-inch sub like the KLA181 will provide more total volume and deeper lows, the RCF SUB 702-AS MK3 is significantly more portable. It is better suited for smaller venues and mobile setups where space is limited.

Who is the ideal user for the RCF SUB 702-AS MK3?

This subwoofer is ideal for mobile DJs, small bands, and event performers who need a professional, punchy low-end in a compact form factor. It is particularly effective when used in small to medium-sized venues.

Gear article

RCF SUB 702-AS MK3 Active PA Subwoofer

The RCF SUB 702-AS MK3 is a high-performance 12-inch active subwoofer designed for live sound applications requiring a compact footprint without sacrificing low-end power. Featuring a 1400 W Class D amplifier and a maximum SPL of 129 dB, it integrates RCF's proprietary Bass Motion Control technology for enhanced linear response and driver protection.

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Overview and Construction

The RCF SUB 702-AS MK3 is a professional-grade active subwoofer housed in a robust bass reflex enclosure. Built from high-quality plywood rather than plastic, the cabinet is engineered for durability and acoustic rigidity, ensuring a consistent performance in demanding touring or installation environments. It occupies a specific niche for users who require a portable 12-inch solution that maintains the punch and clarity typically associated with larger units.

Amplification and Digital Processing

At the heart of the unit is a 1400-watt Class D amplifier, which provides significant headroom and efficient power delivery. The MK3 version introduces advanced protection circuitry, including thermal and RMS limiting, as well as a soft audio limiter designed to prevent clipping. These features ensure the longevity of the components even when the system is pushed to its maximum SPL of 129 dB.

Technical Features and Integration

The SUB 702-AS MK3 is equipped with a versatile rear panel that allows for precise system integration. Key features include:

Onboard Stereo Crossover: Features switchable crossover frequencies for pairing with various full-range tops.
Bass Motion Control (BMC): RCF’s excursion management system that maintains linearity by preventing the woofer from exceeding its physical limits.
Phase and EQ Controls: Allows the user to adjust the phase and volume to suit the acoustic environment and the positioning of the main speakers.

Comparison to Market Alternatives

When compared to other compact solutions like the AVCOM 8" Active Subwoofer, the RCF offers significantly higher output and more professional processing. While 15-inch alternatives like the SubZero P15X or 18-inch models like the QSC KLA181 offer more absolute low-frequency extension, the SUB 702-AS MK3 prioritises transient response and portability. It is often paired with high-output 10-inch or 12-inch tops, such as the Turbosound iQ10 or RCF’s own ART series, to create a balanced, high-fidelity PA system.

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Frequently asked questions

What is the peak power rating of the RCF SUB 702-AS MK3?: The subwoofer is equipped with a Class D amplifier capable of delivering 1400 Watts of peak power. This high power output allows the 12-inch driver to reach a maximum SPL of 129 dB.
What kind of enclosure is used for this model?: The cabinet is constructed from rugged plywood. This material is chosen for its durability and superior acoustic properties compared to plastic alternatives, helping to reduce unwanted resonances.
What is RCF Bass Motion Control (BMC)?: BMC is an advanced excursion management system. It maps the movement of the woofer and prevents it from travelling too far, ensuring a more linear response and protecting the driver from damage.
Does the SUB 702-AS MK3 include a crossover?: Yes, it features an onboard stereo crossover with switchable frequencies. This allows for precise integration with different full-range speakers to create a cohesive sound stage.
What protection features are built into the amplifier?: The unit includes thermal and RMS limiting to prevent overheating and electrical damage. It also features a soft audio limiter to manage signal peaks and prevent audible clipping.
Is this subwoofer suitable for stereo setups?: Yes, it includes stereo inputs and a stereo crossover. This makes it easy to route both left and right signals through the sub before sending them to the top speakers, which can improve the stereo image.
How much does the SUB 702-AS MK3 cost typically?: The typical price range for this unit is approximately GBP 734. Prices may vary slightly depending on the retailer and current availability.
What size is the woofer in this unit?: The SUB 702-AS MK3 features a 12-inch high-power woofer. This size is ideal for users who need a balance between deep bass extension and a compact, portable cabinet.
Can I adjust the phase of the subwoofer?: Yes, the rear panel includes phase controls. This allows you to align the subwoofer's output with your main speakers to avoid frequency cancellation at the crossover point.
What type of housing design does it use?: It utilizes a bass reflex housing. This design helps to extend the low-frequency response and increase the punchiness of the bass output.
How does it compare to an 18-inch subwoofer like the QSC KLA181?: While an 18-inch sub like the KLA181 will provide more total volume and deeper lows, the RCF SUB 702-AS MK3 is significantly more portable. It is better suited for smaller venues and mobile setups where space is limited.
Who is the ideal user for the RCF SUB 702-AS MK3?: This subwoofer is ideal for mobile DJs, small bands, and event performers who need a professional, punchy low-end in a compact form factor. It is particularly effective when used in small to medium-sized venues.