eBay

Ultra Audio A12 12" SQ subwoofer

Recently found these subs hiding in the warehouse. These subs are from a few years back. Need to close them out.

Product Specifications

Nominal Diameter12"
Power Handling (RMS)300 Watts

Impedance single 4 ohm
Frequency Response28 to 400 Hz
Sensitivity85 dB 1W/1m
Voice Coil Diameter2"

Thiele-Small Parameters

Resonant Frequency (Fs)27 Hz
DC Resistance (Re)4 ohms

Mechanical Q (Qms) 6.06
Electromagnetic Q (Qes)0.65
Total Q (Qts)0.59
Compliance Equivalent Volume (Vas) 65.77 liters
Mechanical Compliance of Suspension (Cms)0198.5 um/N
BL Product (BL)13.75 Tm
Diaphragm Mass Inc. Airload (Mms)172.85g
Maximum Linear Excursion (Xmax)11 mm
Surface Area of Cone (Sd)0.0483 m2

Materials of Construction

Cone Material poly
Surround MaterialRubber
Copper Voice Coil
Voice Coil Former Kapton®

Mounting Depth5.4"

Optimum Cabinet Size *

Sealed Volume0.75 ft.³
F3 40 Hz

Vented Volume1.25 ft.³ tuned @35Hz
F3 34 Hz