Transcript
PRODUCT BRIEF Model: Type: Power Rating: Impedance:
2011
P2D4-12
P2D4-12 DVC Subwoofer 400 Watts (RMS) (2) 4 ohms
Features • • • • • • • • • • • • •
High modulus Kevlar™ re-inforced paper-pulp cone. Dual tear & fatigue resistant poly-cotton spider. Tall-profile 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 compression input terminal assembly. Flex-fit™ Mounting pattern Die-Cast aluminum soft-touch painted trim ring allows for optional integrated grill
13.31" [(338.0)]
7.37" [(187.2)]
6.4" [(162.6)]
11.22" [(285.0)]
Recommended Applications Volume (Vb) Tuning(Fb) System -3dB (F3) Liters | cu.ft. Hz Hz (Qtc) 44.9 0.97 45.0 Sealed: 28.9 1.02 40.0 35.7 Ported: 50.7 1.79
Enclosure
Port Dia. in. | cm 4.0
101.6
Port Length in. | cm 11.8
30.1
Closed Box SPL
Vented Box SPL
Closed Box Impedance
Vented Box Impedance
Closed Box Excursion
Vented Box Excursion
130.0
70
120.0
60
110.0
50
100.0
40
90.0
30
80.0
20
70.0
10
60.0
0 10
100 Frequency (Hz)
Technical Specifications Voice Coil Diameter: Voice Coil Height: Voice Coil Layers: Magnetic Gap Height: Linear Excursion, (Xmax): Maximum Excursion (mech), pk-pk: Magnet Weight: Woofer Displacement: Net Weight: Power Rating:
2.25 1.18
57.15 inches | mm 30.0 inches | mm 4 layers 0.39 10.0 inches | mm 0.48 12.1 inches | mm 2.25 57.2 inches | mm 72.8 2.06 oz. | kg 4.8 0.170 liters | cubic ft. 14 6.4 lbs. | kg 400 800 RMS | Peak
1000
Impedance (ohms) Excursion (mm)
SPL (dB)
SPL & Excursion (at 400 Watts) / Impedance (at 1 Watt)
Thiele-Small Specifications Fs (Hz): 27.2 Re (Ohms): 6.40 Le (mH): 5.5 Qts: 0.54 Qes: 0.59 Qms: 6.30 Cms (mm/N): 0.18 Vas (L): 81.5 Mms (g): 194.4 Mmd (g): 186.6 Rms (kg/s): 5.3 Airload (g): 7.8 No (%): 0.24 SPL (dB - 1W/1M): 86.0 BL (T*M): 19.0 *Xmax10 (mm): 13.3 Sd (cm2): 570 EBP: 46 Krm (mOhms): 0.77 Erm: 1.28 Kxm (mH): 50.8 Exm: 0.78 Rem (Ohms): 56.00 * 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. Xmax10 represents actual effective excursion at <10% THD.
Above specifications and dimensions comply with the CEA-2031 standard.
RFPB- P2D4-12 (Rev D)
Rockford Corporation 600 South Rockford Drive Tempe, AZAZ•• •85281 85281 Rockford Rockford Corporation Corporation•• •600 600 South South Rockford Rockford Drive Drive•• •Tempe, Tempe, AZ 85281
Specifications subject to change without notice.
15-Nov-10 DK
