LF
Mid-Woofer
12"
123NPM
Code: 123NPMX8-185
Mid-Woofer/12inch/Neo/Paper/800W/8ohm
Key Features
- High sensitivity, EXTENDED FREQUENCY RESPONSE
- 3 demodulation rings, powerful motor structure, dual air-gap
- High power handling
Quick Specs
Impedance
8 Ω
Program Power
1600 W
Sensitivity
95.82 dB
Fs
58.00 Hz
Magnet
Neodymium
Voice Coil
101.6 mm
Design Notes
The 123NPM is a truly unique full range woofer. We have designed cutting edge product, using the best avail-able materials and highly optimized design for the best performance in its class. It delivers very high efficiency, (96 dB 1watt / 1 meter), incredibly linear frequency response characteristics with extended HF frequency response, extreme high power handling capability, while generating ultra low harmonic distortion artifacts. The 123NPM uses a lightweight carbon fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak linear excursion of 21mm.
Magnetic Circuit
The magnetic circuit features two aluminum shorting rings, double air-gap front plate. The cooling system and the air flow has been designed using the modern FEM techniques and further optimized to provide the highest levels of cooling efficiency. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.
Magnetic Circuit
The magnetic circuit features two aluminum shorting rings, double air-gap front plate. The cooling system and the air flow has been designed using the modern FEM techniques and further optimized to provide the highest levels of cooling efficiency. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.
Specifications
General Specs
Nominal Diameter
12"
Rated Impedance
8 Ohm
Magnet
Neodymium
Basket Material
Aluminum
Power Handling
AES Power
800 W
Continuous Power
1600 W
Peak Power
3200 W
Voice Coil
Diameter
101.6 mm
Former
TIL
Winding Height
23 mm
T/S Parameters
Resonant Frequency (Fs)
58.00 Hz
Re
4.70 \u2126
Qes
0.450
Qms
12.60
Qts
0.430
Vas
31.60 liters
Sd
551.00 cm\u00B2
Mms
100.00 grams
Rms
2.89
Cms
0.0753
Bl
19.60 T\u00B7m
Le
0.710 mH
Sensitivity
95.82 dB
Design Details
Surround Material
fabric
Cone/Dome Material
Paper GF
Spider
Nomex
T-Plate
12.5 mm
Xmax (peak)
5.25 mm
Xmech
17.75 mm
Overall Diameter
320.35 mm
Bolt Circle Diameter
299.00 mm
Baffle Cutout Dia.
281.90 mm
Mounting Holes
8
Depth (flange to rear)
140.50 mm
Net Weight
6.20 kg
Ordering Codes
Product Code
123NPMX8-185
Downloads
Frequency Response & Impedance
2D Drawing
Enclosure Recommendations
Recommended enclosure alignments (bass reflex): - 20 liters tuned to 67 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 62 Hz, HP filter 59 Hz - 25 liters tuned to 61 Hz: balanced response, general-purpose (recommended); -3 dB approx. 56 Hz, HP filter 51 Hz - 30 liters tuned to 55 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 47 Hz, HP filter 43 Hz
Frequently Asked Questions
- - High sensitivity, EXTENDED FREQUENCY RESPONSE
- - 3 demodulation rings, powerful motor structure, dual air-gap
- - High power handling
Recommended enclosure alignments (bass reflex): - 20 liters tuned to 67 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 62 Hz, HP filter 59 Hz - 25 liters tuned to 61 Hz: balanced response, general-purpose (recommended); -3 dB approx. 56 Hz, HP filter 51 Hz - 30 liters tuned to 55 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 47 Hz, HP filter 43 Hz
Vented pa bass-mid or 2-way pa cabinet; weight-critical installs
AES Power: 800 W,
Continuous: 1600 W,
Peak: 3200 W.
Sensitivity: 95.82 dB (1W/1m).
