LF
Mid-Woofer
12"
12NPM
Code: DR-12-004-8R-B2-C0001
Variant of DR-12-004
Key Features
- Carbon fiber loaded paper cone
- Very high efficiency
- Lightweight mechanical structure
Quick Specs
Impedance
8 Ω
Program Power
900 W
Sensitivity
98.00 dB
Fs
49.00 Hz
Magnet
Neodymium
Voice Coil
76 mm
Design Notes
The 12NPM is a high efficiency, (98 dB 1watt / 1 meter) 12-inch mid bass woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts.-
The 12NPM uses a lightweight carbon fiber loaded cone assembly along with a precision double roll constant geometry surround. This combination provides remarkable strength, high efficiency and a excursion linearity of 18.2mm.
Magnetic Circuit
REDCATT engineers have developed a lightweight, inside-neodymium slug based magnetic circuit capable of delivering the highest level of performance providing a consistent, high integrity magnetic flux gap, ultra low distortion characteristic and high efficiency cooling system. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.
The 12NPM uses a lightweight carbon fiber loaded cone assembly along with a precision double roll constant geometry surround. This combination provides remarkable strength, high efficiency and a excursion linearity of 18.2mm.
Magnetic Circuit
REDCATT engineers have developed a lightweight, inside-neodymium slug based magnetic circuit capable of delivering the highest level of performance providing a consistent, high integrity magnetic flux gap, ultra low distortion characteristic and high efficiency cooling system. 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
450 W
Continuous Power
900 W
Peak Power
1800 W
Voice Coil
Diameter
76 mm
Winding Wire
CCAW
Former
Glass Fiber
Winding Height
18.6 mm
T/S Parameters
Resonant Frequency (Fs)
49.00 Hz
Re
4.70 \u2126
Qes
0.320
Qms
9.95
Qts
0.310
Vas
63.60 liters
Sd
531.00 cm\u00B2
Mms
65.60 grams
Rms
2.03
Cms
0.1610
Bl
17.30 T\u00B7m
Le
0.650 mH
Sensitivity
98.00 dB
Design Details
Surround Material
fabric
Cone/Dome Material
Paper GF
Spider
Nomex
T-Plate
10.5 mm
Xmax (peak)
4.05 mm
Xmech
14.55 mm
Overall Diameter
315.00 mm
Bolt Circle Diameter
298.00 mm
Baffle Cutout Dia.
285.00 mm
Mounting Holes
8
Depth (flange to rear)
142.50 mm
Net Weight
4.10 kg
Ordering Codes
Product Code
DR-12-004-8R-B2-C0001
Downloads
Frequency Response & Impedance
2D Drawing
Technical Summary
The 12NPMX8-054 is a 12-inch mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivity (98 dB 1W/1m) and controlled low-frequency behavior. The motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.
The driver is intended for use with high-power amplification (approx. 450 W AES / 900 W continuous) and DSP control. A high-pass filter in the range of 28-45 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 34-2000 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.
This design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.
The driver is intended for use with high-power amplification (approx. 450 W AES / 900 W continuous) and DSP control. A high-pass filter in the range of 28-45 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 34-2000 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.
This design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.
Recommended enclosure volumes are simulated results. For best enclosure volumes and tuning, we recommend secondary simulation and careful evaluation. Several rounds of samples and fine-tuning may be required for optimal results.
Enclosure Recommendations
Recommended enclosure alignments (bass reflex): - 55 liters tuned to 53 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 49 Hz, HP filter 45 Hz - 65 liters tuned to 46 Hz: balanced response, general-purpose (recommended); -3 dB approx. 39 Hz, HP filter 36 Hz - 80 liters tuned to 40 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 34 Hz, HP filter 28 Hz
Frequently Asked Questions
- - Carbon fiber loaded paper cone
- - Very high efficiency
- - Lightweight mechanical structure
Recommended enclosure alignments (bass reflex): - 55 liters tuned to 53 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 49 Hz, HP filter 45 Hz - 65 liters tuned to 46 Hz: balanced response, general-purpose (recommended); -3 dB approx. 39 Hz, HP filter 36 Hz - 80 liters tuned to 40 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 34 Hz, HP filter 28 Hz
Vented pa bass-mid or 2-way pa cabinet; weight-critical installs
AES Power: 450 W,
Continuous: 900 W,
Peak: 1800 W.
Sensitivity: 98.00 dB (1W/1m).
