J12PA-8C
Key Features:
  • 12" (304mm), 8 ohm
  • Guitar speaker, 25 watts
  • Alnico magnet, Paper cone with paper surround

Primary Specifications

Speakers Environment Indoor
ROHS Compliant No

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 12.0 / 304.0 inch / mm
Rated Impedance 8 ohms
Rated Power 25.0 Watts
Program Power 50 Watts
Frequency Range 60 - 6,000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
93 dB SPL
Voice Coil Diameter 1.0 / 25.4 inch / mm
Magnet Weight 6.8 / 193 oz / gr
Transformer

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo) 76 Hz
D.C. Resistance (Re) 6.1 ohms
Mechanical Q (Qms) 13.7
Electrical Q (Qes) 2.66
Total Q (Qts) 2.23
Compliance Equivalent Volume (Vas) 72.8 ltr
BL Product (BL) 4.9 T-M
Maximum Linear Excursion (Xmax) 2.2 mm
Surface Area of Cone (Sd) 511.0 cm2
Moving Mass (Mmd) g

Material Descriptions

 
Basket Stamped Steel
Terminal Size 0.205 X 0.02
Magnet Alnico
Voice Coil Wire Copper
Voice Coil Form Nomex
Cone Paper
Cone Edge Paper
Dust Cap Felt
http://s3.amazonaws.com/misco/curves/J12PA-8C.JPG?1345610212
ID Description Measurements Tolerance
OD Outside Diameter 12.0 in. +/- 0.040”
CD Cutout Diameter 11.0 in. +/- 0.030”
MG Magnet Diameter 1.4 in. +/- 0.050”
HD Hole Diameter 0.3 in. +/- 0.020”
MD Mounting Diameter 11.7 in. +/- 0.020”
ID Internal Depth 5.3 in. Maximum
FT Flange Thickness 0.16 in. +/- 0.050”
NW Net Weight 1503.0 g
ALNICO