12” Midbass, 3” voice coil, 400 W, 98 dB

 

pic_12B400

KEY FEATURES:

  • 98 db 1W / 1m average sensitivity
  • 77 mm high temperature aluminium voice coil
  • 800 W AES program power
  • Powerful, ferrite 180 mm magnet structure
  • Silicone spider

 

Application : Midbass

The 12B400 loudspeaker is combining good linearity and efficiency with high power handling capabilities, with use of 77 mm aluminium voice coil. It features vented aluminium die cast frame, 180 mm magnet structure and curvilinear paper cone. 12B400 is suitable for application as LF driver in small stage monitor and 2- way PA boxes with 1`` HF driver.

SPECIFICATIONS

Nominal Diameter
Impedance
Minimum Impedance
Power Capacity AES ¹
Program Power ²
Sensitivity
Frequency Range
Voice Coil Diameter
Voice Coil Material
Voice Coil Former
V. C. Winding Depth
Magnet Gap Depth
Cone Material
Basket
Magnet
Flux Density

12"/310 inch/mm
8 Ohm
6.35 Ohm
400 W
800 W
(200-2000 Hz) 98 dB/W/m
50 - 2500 Hz
77 mm
Aluminium
Kapton™
15 mm
9 mm
Paper
Die cast aluminium
Ferrite
1.33 T

THIELE-SMALL PARAMETERS

Fs
Qms
Qes
Qts
Vas
Mms
Re
Sd
Xmax*
Cms
BL 
Le at 1kHz 

50.47 Hz
9.69
0.256
0.249
74.74 Litres
49.22 grams
5.55 Ohms
514.7 cm2
±5.25 mm
0.202 mm/N
18.40 T.m
0.81 mH

1. AES standard. Power is calculated on rated minimum impedance. Measurement is in 65 L box enclosure tuned 63 Hz using a 40-400 Hz band limited pink noise test signal applied continuously for 2 hours.
2. Program power is defined as 3db greater than AES Power Capacity.

* Linear Mathematical Xmax is calculated as: (Hvc - Hg)/2 + Hg/4 where Hvc is the voice coil depth and Hg is the gap depth.

MOUNTING INFORMATION

Overall Diameter
Baffle Hole Diameter
Mounting Holes
Bolt Circle Diameter
Overall Depth
Net Weight

311 mm
280 mm
8 with dia. 7 mm
294 mm
144.5 mm
7.25 kg

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