15NPW 15NPW 15NPW 15NPW
LF Woofer 15"

15NPW

Code: DR-15-027-8R-B2-C0001

Woofer/15inch/Neo/Paper/1200W/8ohm

Key Features

  • Carbon fiber loaded paper cone
  • Double silicone spider
  • High power handling

Quick Specs

Impedance

8 Ω

Program Power

2400 W

Sensitivity

97.34 dB

Fs

40.00 Hz

Magnet

Neodymium

Voice Coil

4 mm

Design Notes

The 15NPW is a high efficiency, (97 dB 1watt / 1 meter) 15-inch woofer with linear frequency response characteristics, high power handling capability while generating low harmonic distortion artifacts. The 15NPW 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 maximum excursion of 15mm. Woofer features REDCATT double silicone sealed spider.

Power Handling
At the core of the 15NPW is it’s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 350degC, well beyond the thermal requirements of modern professional audio systems.
The 15NPW cone and dust cap are made using an advanced carbon fiber loaded REDCATT pulp. The woofer cone is also extensively treated to withstand harsh environments and high humidity. Metal parts in the speaker assembly are coated for extreme weatherization protection.

Specifications

General Specs

Nominal Diameter 15"
Rated Impedance 8 Ohm
Magnet Neodymium
Basket Material Aluminum

Power Handling

AES Power 1200 W
Continuous Power 2400 W
Peak Power 4800 W

Voice Coil

Diameter 4 mm
Winding Wire Copper
Former Glass Fiber
Winding Height 25.5 mm

T/S Parameters

Resonant Frequency (Fs) 40.00 Hz
Re 5.60 \u2126
Qes 0.280
Qms 8.77
Qts 0.270
Vas 107.00 liters
Sd 881.00 cm\u00B2
Mms 155.10 grams
Rms 4.44
Cms 0.1000
Bl 28.30 T\u00B7m
Le 1.650 mH
Sensitivity 97.34 dB

Design Details

Spider Nomex
T-Plate 14 mm
Xmax (peak) 5.75 mm
Xmech 19.75 mm
Overall Diameter 392.00 mm
Bolt Circle Diameter 373.00 mm
Baffle Cutout Dia. 360.00 mm
Mounting Holes 8
Depth (flange to rear) 155.50 mm
Net Weight 8.50 kg

Ordering Codes

Product Code DR-15-027-8R-B2-C0001

Frequency Response & Impedance

Frequency response of 15NPW

2D Drawing

2D drawing of 15NPW

Technical Summary

The 15NPWX8-016 is a 15-inch professional woofer designed for the highest-demand touring PA, installed sound, and cinema applications requiring maximum acoustic output, thermal durability, and motor linearity from a single 15-inch driver. With a sensitivity of 97.34 dB (1 W/1 m) and an AES power handling of 1200 W at 8 ohms, the driver delivers a calculated maximum SPL of approximately 128 dB at 1 metre - among the highest figures available in the professional 15-inch woofer category. The motor system uses a 4-inch copper voice coil wound on a Polyimide former rated to withstand peak temperatures in excess of 350 degC, providing sustained operation at continuous programme levels without thermal compression or former failure under the most demanding long-term drive conditions. The Neodymium magnet structure produces a Bl of 28.3 T.m at a Qts of 0.27, placing the 15NPW in the strong-motor professional woofer class where vented (bass reflex) enclosures are the only appropriate alignment. The carbon fiber loaded REDCATT paper cone assembly is treated against humidity and environmental exposure; the double silicone sealed Nomex spider provides moisture ingress protection for permanent installation and touring use.

The 15NPWX8-016 requires professional high-power amplification of 1200-2400 W into 8 ohms, with DSP control mandatory for all alignments. A 24 dB/octave high-pass filter set at 50, 42, or 36 Hz depending on the alignment is required; the vented enclosure unloads the cone below Fb, and with Xprot=14.6 mm, displacement limiting must be active at full amplifier power to prevent progressive mechanical overload below the tuning frequency at high programme levels. The recommended operating bandwidth is approximately 40 Hz to 1.5 kHz, with a 24 dB/octave low-pass crossover to a compression driver or high-frequency section at 1.0-1.5 kHz appropriate for standard two-way system integration.

The 15NPWX8-016 is suited for: two-way touring PA enclosures requiring maximum SPL from a single 15-inch driver; flyable and fixed-install main speakers for theatres, stadia, arenas, houses of worship, and outdoor festivals; cinema main LF speaker assemblies where thermal durability and programme-consistent output across extended programme durations are required; high-SPL column array woofer sections; and reference two-way installed PA systems for venues where a single 15-inch cabinet must deliver full-bandwidth coverage at continuous programme levels without supplementary sub-bass reinforcement. Its combination of 97.34 dB sensitivity, 1200 W AES power handling, Neodymium motor with 350 degC-rated Polyimide former, and carbon fiber loaded cone positions the 15NPW as the highest-output 15-inch driver in the REDCATT NPW platform for mid-to-large-scale professional audio applications.

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):
- 110 liters tuned to 40 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 37 Hz, HP filter 32 Hz
- 130 liters tuned to 35 Hz: balanced response, general-purpose (recommended); -3 dB approx. 30 Hz, HP filter 25 Hz
- 150 liters tuned to 31 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 26 Hz, HP filter 20 Hz

Frequently Asked Questions

  • - Carbon fiber loaded paper cone
  • - Double silicone spider
  • - High power handling
Recommended enclosure alignments (bass reflex):
- 110 liters tuned to 40 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 37 Hz, HP filter 32 Hz
- 130 liters tuned to 35 Hz: balanced response, general-purpose (recommended); -3 dB approx. 30 Hz, HP filter 25 Hz
- 150 liters tuned to 31 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 26 Hz, HP filter 20 Hz
Outdoor / weather-resistant; vented subwoofer, pa bass bin, touring sub cabinet; weight-critical installs
AES Power: 1200 W, Continuous: 2400 W, Peak: 4800 W. Sensitivity: 97.34 dB (1W/1m).

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