Specification Sheet

PRODUCT BRIEF
Model: P2D2-8
Type: DVC Subwoofer
Power Rating: 250 Watts (RMS)
Impedance: (2) 2 ohms
Features
• High modulus Kevlar™ re-inforced paper-pulp cone.
•
Dual tear & fatigue resistant poly-cotton spider.
• Tall-prole VAST™ Santoprene™ surround
• High temp 2.25" voice coil w/ spun-laced Nomex™ insulating re-inforcement collar
• Optimized motor magnetics with extended pole and bumped vented backplate.
• Fatigue resistant and reduced strain "stitched on" flexible lead wire design.
• Proprietary spider venting/cooling technique
• Multi-point high-temp/high-strength neck joint bonding technique.
• Sturdy 16 guage compound bend frame geometry.
• Semi-flexible, PVC removable protective motor cover.
• Proprietary all metal, radially oriented compr
ession input terminal assembly.
• Flex-t™ Mounting pattern
• Die-Cast aluminum soft-touch painted trim ring allows for optional integrated grill
Recommended Applications
Tuning(Fb) System
-3dB (F
3
)
Hz
(Qtc)
Hz
Sealed:
6.5 0.23 66.7 0.73 66.9 - - - -
Thiele-Small Specifications
Ported:
18.4 0.65 38.5 - 33.4 2.0 5.08 8.8 22.3
Fs (Hz): 39.6
Re (Ohms): 3.40
Le (mH): 2.9
Qts: 0.46
Qes: 0.51
Qms: 5.40
Cms (mm/N): 0.14
Vas (L): 9.9
Mms (g): 113.5
Mmd (g): 111.6
Rms (kg/s): 5.2
Airload (g): 1.9
No (%): 0.12
SPL (dB - 1W/1M): 83.0
BL (T*M): 13.9
*Xmax
10
(mm):
7.8
Sd (cm2): 221
EBP: 78
Krm (mOhms): 0.14
Voice Coil Diameter: 2.25 57.7 inches | mm Erm: 1.41
Voice Coil Height: 1.01 25.6 inches | mm Kxm (mH): 22.0
Voice Coil Layers: layers Exm: 0.8
Magnetic Gap Height: 0.39 10.0 inches | mm Rem (Ohms): 31.74
Linear Excursion, (Xmax): 0.31 7.7 inches | mm
Maximum Excursion (mech), pk-pk: 1.90 48.3 inches | mm *
Magnet Weight: 49 1.38 oz. | kg
Woofer Displacement: 2 0.071 liters | cubic ft.
Net Weight: 9.5 4.3 lbs. | kg
Power Rating: 250 500 RMS | Peak
Above specifications and dimensions comply with the CEA-2031 standard.
RFPB- P2D2-8 (Rev D) DK15-Nov-10
P2D2-8
2011
Enclosure
Volume (Vb) Port Dia. Port Length
Liters | cu.ft. in. | cm in. | cm
SPL & Excursion (at 250 Watts) / Impedance (at 1 Watt)
Technical Specifications
4
All parameters are derived using a laser
velocity measurement method and verified with
actual measured Mmd and Re. All dual voice
coil models are wired in series. Xmax
10
represents actual effective excursion at <10%
THD.
Specifications subject to change without notice.
Rockford Corporation • 600 South Rockford Drive • Tempe, AZ • 85281Rockford Corporation • 600 South Rockford Drive • Tempe, AZ • 85281
Rockford Corporation • 600 South Rockford Drive • Tempe, AZ • 85281
0
10
20
30
40
50
60
70
60.0
70.0
80.0
90.0
100.0
110.0
120.0
130.0
10 100 1000
Impedance (ohms)
Excursion (mm)
SPL (dB)
Frequency (Hz)
Closed Box SPL Vented Box SPL Closed Box Impedance
Vented Box Impedance
Closed Box Excursion
Vented Box Excursion
5.67"
[(144.0)]
4.76"
[(120.8)]
7.13"
[(181.0)]
8.96"
[(227.5)]