12" | 123FPM
Ferrite Mid-Woofer
Key features:
- EXTENDED FREQUENCY RESPONSE
- RIB REINFORCED PAPER CONE
- HIGH POWER HANDLING
Design notes:
The 123FPM is a high efficiency,(98.5 dB 1watt / 1 meter) 12-inch mid basswoofer with incredibly linear frequencyresponse characteristics. The 123FPM usesa lightweight rib-reinforced cone assemblyalong with a precision double roll constantgeometry surround. This combination provides remarkable strength, high efficiencyand a excursion linearity of 12mm.Magnetic CircuitREDCATT engineers have developed alightweight, inside-neodymium slug basedmagnetic circuit capable of delivering thehighest level of performance providing aconsistent, high integrity magnetic flux gap,ultra low distortion characteristic and highefficiency cooling system. The magneticcircuit design is optimized to generatethe minimum amount of flux modulation,providing exceptional stability
Specifications:
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General specs |
Nominal Diameter: |
12 in. |
Rated Impedance: |
4 Ohm |
Power handling |
AES Power: |
300 Watts |
Program Power: |
600 Watts |
Voice Coil |
Diameter: |
2.5 in. |
Winding wire: |
CCAW |
Former: |
Glass-fiber |
Winding height: |
13.5 mm |
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T/S Parameters |
Resonant frequency: |
45 Hz |
Re: |
3.1 ohm |
Qes: |
0.29 |
Qms: |
4.96 |
Qts: |
0.27 |
Vas: |
98.5 liters |
Sd: |
531 cm2 |
Mms: |
52.1 grams |
Bl: |
12.8 |
Le: |
0.42 mH |
Sensitivity: |
97.75 dB |
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Design details |
Surround Material: |
Fabric |
Cone material: |
Paper |
Spider: |
Nomex |
Plate thickness: |
8 mm |
Peak to peak linear cone Displacement |
5.1 mm |
Overall diameter: |
320 mm |
Bolt circle diameter: |
302 mm |
Baffle cutout dia.: |
282 mm |
Number of mounting holes: |
8 |
Depth (flange to rear): |
127.8 mm |
Net weight: |
5 kg |
Ordering codes: |
4 ohm version: |
123FPMX4-188B |
8 ohm version: |
123FPMX8-188 |
16 ohm version: |
n/a |
Recone kits: |
4 ohm version: |
RC123FPMX4-188B |
8 ohm version: |
RC123FPMX8-188 |
16 ohm version: |
n/a |
Frequency response & lmpedance
2D drawing