EARTHQUAKE RK-C6 V2 New Construction Rough-in Kit for 6.5-Inch

Our review of the EARTHQUAKE RK-C6 v2 focuses on installers and builders who need a fast, reliable solution for mounting 6.5-in ceiling speakers during new construction. The bottom line: this rough-in kit streamlines placement and secure attachment before drywall goes up, with a thin perforated aluminum wing system and 360-degree adjustable ring brackets that save time and reduce guesswork. For anyone fitting Earthquake or similarly sized speakers with a 200mm to 210mm mounting diameter, the RK-C6 v2 is a practical, low-fuss component for professional or DIY new-build installs.

Key Features

• Compatibility: Designed to fit Earthquake 6.5-in in-ceiling speakers and any speaker with a 200mm to 210mm mounting diameter for predictable fitment.
• Versatile mounting: The kit includes four dog-ear wings and two adjustable mounting ring brackets that allow 360-degree positioning so installers can fine-tune placement.
• Trim-to-fit wings: Perforated anti-rust aluminum wings extend to 30.5 in and can be trimmed to match stud spacing for a snug, reliable attachment.
• New construction focus: Intended for install prior to drywall, the RK-C6 v2 includes a drywall template to ensure accurate speaker openings.
• Durable materials: Thin, perforated aluminum resists rust and accepts staples, nails, or screws for secure fastening into ceiling joists.
• Time savings: Preconfigured brackets and a clear template reduce measuring and rework, speeding multi-room speaker installs.

Who It's For

The RK-C6 v2 is best for electricians, audio installers, and general contractors doing new-home builds or substantial remodels that allow rough-in work before sheetrock is installed. It suits those who want a repeatable, robust mounting solution for 6.5-in ceiling speakers and prefer adjustable brackets to avoid repositioning after drywall.

It is not intended for retrofit installs or surface-mount applications; homeowners looking to add speakers to finished ceilings should look for remodel or retrofit brackets designed to be installed from below the drywall.

Pros & Cons

Pros

• Durable perforated aluminum wings provide a secure anchor that can be trimmed to joist spacing.
• Adjustable ring brackets offer 360-degree positioning for precise speaker alignment.
• Includes a drywall template to simplify accurate cutouts and reduce installation errors.
• Built specifically to speed new construction installs, saving labor time on multi-room jobs.

Cons

• Limited to new construction use; not suitable for installs in finished ceilings.
• Inner mounting diameter is 210mm, so noncompatible speakers outside the 200mm to 210mm range will not fit without modification.

Specifications

Product type	New construction rough-in kit
Fits speaker size	6.5-in ceiling speakers
Inner mounting diameter	210mm (works with 200mm-210mm)
Wing material	Perforated anti-rust aluminum
Maximum wingspan	30.5 in (trim-to-fit)
Included hardware	Four dog-ear wings, two adjustable mounting ring brackets, drywall template

Our Verdict

The EARTHQUAKE RK-C6 v2 is a practical, well-made rough-in kit that delivers real time savings and a secure mount for 6.5-in ceiling speakers during new construction. Installers who need consistent, adjustable placement and a corrosion-resistant trim-to-fit wing system will find this kit good value for labor savings and reduced rework; those needing retrofit solutions should choose a remodel-specific bracket instead.

Frequently Asked Questions

Can the RK-C6 v2 be used in finished ceilings?
The RK-C6 v2 is designed for new construction and must be installed before drywall; it is not intended for retrofit installs.

What speaker mounting diameter works with this kit?
The inner mounting diameter is 210mm and the kit supports speakers with a mounting diameter between 200mm and 210mm.

How are the wings attached to joists?
The perforated aluminum wings can be trimmed and fastened with staples, nails, or screws directly into ceiling joists for a secure hold.