RZ2931-1
Key Features:
  • 5.2" (134 mm), 4 ohm
  • Woofer, 15 watts
  • Ferrite magnet, felted paper cone with polyether foam surround
  • RoHS Compliant;

Primary Specifications

Speakers Environment Indoor
ROHS Compliant Yes

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 5.2 / 134.0 inch / mm
Rated Impedance 4 ohms
Rated Power 15.0 Watts
Program Power 30 Watts
Frequency Range 50 - 8000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
89 dB SPL
Voice Coil Diameter 1.0 / 25.4 inch / mm
Magnet Weight 10.0 / 284 oz / gr
Transformer

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo) 71 Hz
D.C. Resistance (Re) 3.4 ohms
Mechanical Q (Qms) 8.0
Electrical Q (Qes) 0.45
Total Q (Qts) 0.43
Compliance Equivalent Volume (Vas) 12.7 ltr
BL Product (BL) 4.1 T-M
Maximum Linear Excursion (Xmax) 2.1 mm
Surface Area of Cone (Sd) 95.0 cm2
Moving Mass (Mmd) g

Material Descriptions

 
Basket Stamped Steel
Terminal Size 0.205 x 0.02
Magnet Ferrite
Voice Coil Wire Copper
Voice Coil Form Kapton
Cone Felted Paper
Cone Edge Polyether Foam
Dust Cap Felt
http://s3.amazonaws.com/misco/curves/RZ2931-1.JPG
ID Description Measurements Tolerance
OD Outside Diameter 5.3 in. +/- 0.040”
CD Cutout Diameter 4.9 in. +/- 0.030”
MG Magnet Diameter 3.4 in. +/- 0.050”
HD Hole Diameter 0.4 in. +/- 0.020”
MD Mounting Diameter 3.8 in. +/- 0.020”
ID Internal Depth 2.1 in. Maximum
FT Flange Thickness 0.14 in. +/- 0.050”
NW Net Weight 818.0 g
ceramic