Need the "Z" of a rockford TRF2212

[PioneerSPL1990 10+ year member]

trying to build a **** box and i've been on hold with rockford for over 2 hours. and when you google subwoofer "Z" all you get is 100 pages of Logitech garbage.

someones got to know this, or at least tell me how i could arrive at it.

Click to read more...

 

[michaellane 5,000+ posts]

i heard 2.5 cubes after displacment worked well for those trf's

 

[michaellane 5,000+ posts]

Product Name TRF2212

Nominal Diameter 12 in (305 mm)

Magnet Weight 400 oz (11,340 g)

Frequency Range 45-200 Hz

Nominal Impedance 2 x 1.5 ohms

DC Resistance (Re) 2 x 1.4 ohms

Resonance Frequency (Fs) 45 Hz

Total Q Factor (Qts) 0.21

Electrical Q Factor (Qes) 0.23

Mechanical Q Factor (Qms) 3.916

Effective Cone Area (SD) 84 in^2 (0.054 m^2)

Equivalent Air Volume (VAS) 0.98 ft^2 (27.8 L)

Compliance (Cms) 6.85E-05 m/N

Moving Mass (Mms) 6.46 oz (183 g)

Voice Coil Diameter 4 in (102 mm)

Voice Coil Winding Width 2.42 in (61.5 mm)

Voice Coil Former Material 8 Mil Aluminum

Voice Coil Inductance 4.32 mH

Force Factor (BL) 26.33 Tm

Linear Excursion (Xmax) 0.61 in (15.5 mm)

Sensitivity (SPL) 92.6 dB

Operating Power (PE) 2000 W RMS / 4000 W Peak

Mounting Diameter 10.813 in (275 mm)

Mounting Depth 8.125 in (206 mm)

found this but this is it //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[michaellane 5,000+ posts]

ROCKFORD FOSGATE-TEAM RF-12" SUB WOOFER-4000W-FOR SPL! - eBay (item 260560111558 end time Mar-28-10 17:41:49 PDT)

ask that guy. he has original paperwork with his

 

[PioneerSPL1990 10+ year member]

there paper work sucks im calculating shit like crazy. i know i had the displacment before but i cant find that right now either. i cant get it to work at all on alpha. im using the basic winisd now.

im shooting for 3.5 cubes after displacements @ 38hz

 

[JimJ 5,000+ posts]

Z is just the letter symbol for impedance, like R for resistance or L for inductance.