Features
The R12A & R15A is our reference level 1200W 12” and 15” car
audio low frequency subwoofer drivers, available in a dual 2
ohm configuration. They feature a high quality triple 3/4” thick
Y35 magnet assembly and a 4 layer 3” coil which delivers tre-
mendous low frequency output in compact enclosures.
The thick paper cone and big roll surround provides an un-
matched bass experience. The pole vent and cooling ring pro-
motes cooling to ensure reliability. Push terminals are provided
to ensure a secure connection.
Physical Specifications
R12A
R15A
Overall Diameter
(inches)
12.25
15.5
Mounting Diameter
(inches)
11.25
14.25
Mounting Depth
(inches)
7.6
8.4
Cone Material
Paper
Paper
Dust Cap
Poly
Poly
Frequency Range (Hz) 20-100
20-100
Voice Coil Diameter
3”
3”
Net Weight (lbs)
46
48
Recommended Enclosures
R12A
R15A
Sealed
1.0 ft
3
2.0 ft
3
Ported
2.5-3.0 ft
3
@ 35Hz 4.0-5.0 ft
3
@ 35Hz
When using multiple subwoofers in a common enclosure, multiply
the required volume by the number of subwoofers, and use two
ports (as specified above) per subwoofer.
T/S Parameters
R12A
R15A
Fs (Hz)
36.3
37.1
Qms
4.12
4.64
Qes
0.41
0.46
Qts
0.36
0.42
Vas (Litres)
53.6
110.7
Xmax (mm)
25
25
SPL 1W/m (db)
89.9
92.7
Continuous Power (W) 1200
1200
Re (Ω)
4.2
4.2
Le (mH)
7.13
7.27
BL
25.3
25.3
Usage Guidelines
Build rigid enclosures using ¾” MDF or thicker.
Use two layers of ¾” MDF for the enclosure’s baffle.
Use the recommended power and enclosures for the most
reliable operation
Use a 33Hz subsonic filter with the recommended ported
enclosure.
Ensure that all enclosures are securely fastened to the car
before driving to prevent damage occupants or equipment.
