About the Roswell RMA 12"

Product highlights:
- 12" marine subwoofer
- dual 4-ohm voice coils
- suitable for infinite baffle applications and sealed or ported enclosures
- power handling: 500 watts RMS (1000 watts peak)
- frequency response: 32-250 Hz
- sensitivity: 88 dB
- cutout diameter: 11.2"
- mounting depth: 6.38"
- warranty: 2 years
- MFR # C920-1811
- Item # 3511811
What's in the box:
Roswell RMA 12" owner's manual
If you need assistance accessing this owner's manual, please give us a call.- One 12" Marine subwoofer
- Black grille
- Eight 2" Stainless steel screws
More details on the Roswell RMA 12"

Features & specs
Features and Specs | ||
---|---|---|
Size | 12-inch | |
Impedance (Ohms) | 2, 8 | |
Cone Material | Poly | |
Surround Material | Rubber | |
Basket Material | Centrex Plastic | |
Grille | Black plastic | |
Free-Air | Yes | |
Dual Voice Coil | Yes | |
Sensitivity |
88 dB at 1 watt | |
Frequency Response | 32 - 250 Hz | |
Max RMS Power Handling | 500 | |
Peak Power Handling (Watts) | 1000 | |
Top Mount Depth (inches) | 6 3/8 | |
Bottom Mount Depth (inches) | N/A | |
Cutout Diameter or Length (inches) | 11 1/4 | |
Frame Width | 12.84 | |
Frame Length | 12.84 | |
Vas (liters) | 41.3 | |
Fs (Hz) | 32 | |
Qts | 0.77 | |
Xmax (millimeters) | 12 | |
Parts Warranty | 2 Years | |
Labor Warranty | 2 Years | |
Box Requirements | ||
Ideal Sealed Box Volume (cubic feet) | N/A | |
Minimum Sealed Box Volume (cubic feet) | N/A | |
Maximum Sealed Box Volume (cubic feet) | N/A | |
Ideal Ported Box Volume (cubic feet) | 1.63 | |
Minimum Ported Box Volume (cubic feet) | 1.5 | |
Maximum Ported Box Volume (cubic feet) | 2.5 | |
Port diameter (inches) | 4 | |
Port length (inches) | 7.625 |
Product Research
Features
Impedance Switch: A switch on the input terminal, behind a panel secured by two screws, allows you to change the subwoofer's impedance between 2Ω and 8Ω, internally changing between wiring the dual 4Ω voice coils in parallel and in series. (The connected amplifier should be off when changing the impedance.) The power handling is the same for either setting; 500 watts RMS/1,000 watts peak.
Wire Terminal: The set screw terminals will accept up to 10-gauge speaker wire.
Klippel Verified: The Klippel distortion analyzer, a device that uses a laser and sophisticated software to do large-scale analysis of drivers in motion, lets Roswell optimize the woofer's motor structure, voice coil alignment, and suspension to yield the best possible performance.
Basket And Grille: The basket and grille are Centrex plastic; the basket encloses the woofer's motor system to prevent corrosion.
Infinite-Baffle Operation: The R1 subwoofer is designed for infinite baffle operation so that it can be installed in a variety of locations, without the need for a dedicated enclosure. If a sealed enclosure is used, Roswell recommends it be as large as is practical. Three ported enclosure options are also listed in the manual:
- 1.5 ft³ using a 4" diameter x 10⅞" long port, resulting in a tuning frequency of 40 Hz
- 2.0 ft³ using a 4" diameter x 7⅝" long port, resulting in a tuning frequency of 40 Hz
- 2.5 ft³ using a 4" diameter x 7⅝" long port, resulting in a tuning frequency of 35 Hz
Loading...
Loading accessories...
Customer Q&A
Loading...
Loading articles...