What are the key features of the REDCATT 154FIND?

The REDCATT 154FIND features: Cost effective design, yet with high spl, extended mid frequency; Good power handling; Lightweight paper cone, conex spider.

What are the power handling and sensitivity specifications of the 154FIND?

The 154FIND has an AES power rating of 500 W, continuous power of 1000 W, peak power of 2000 W, and a sensitivity of 97.38 dB (1W/1m).

What are the Thiele-Small parameters of the 154FIND?

Key T/S parameters: Fs=38.00 Hz, Qts=0.400, Vas=187.20 liters, Sensitivity=97.38 dB, Bl=18.10 T·m, Xmax=4.5 mm. Magnet type: Ferrite.

154FIND - Mid-Woofer - Professional Loudspeaker Engineering

Name: 154FIND
Brand: REDCATT
SKU: 154FINDX8-298

Design Notes

The 154FIND is a cost-effective solution for two-way and multi-way systems, together with subwoofers. It’s lightweight yet strong cone allows the magnetic circuit to be size optimized while delivering a seizable amount of sound pressure. With its high efficiency (97 dB 1watt / 1 meter) and high power handling capabilities, this woofer will excel in all applications with tight budgets. The cone shape and material was developed to extend mid-frequency response, making the woofer good choice for two-way and multi-way systems.

Power Handling
At the core of the 154FIND is its voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures above 280°C. The winding with high temperature handling copper wire ensures the long life of the voice coil, without the costly service cycles.
The 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 Ferrite

Basket Material Steel

Power Handling

AES Power 500 W

Continuous Power 1000 W

Peak Power 2000 W

Voice Coil

Diameter 63.5 mm

Winding Wire Copper

Former Glass Fiber

Winding Height 17 mm

T/S Parameters

Resonant Frequency (Fs) 38.00 Hz

Re 5.60 \u2126

Qes 0.430

Qms 8.10

Qts 0.400

Vas 187.20 liters

Sd 881.00 cm\u00B2

Mms 103.00 grams

Rms 3.03

Cms 0.1700

Bl 18.10 T\u00B7m

Le 0.970 mH

Sensitivity 97.38 dB

Design Details

Surround Material fabric

Cone/Dome Material Paper GF

Spider Nomex

T-Plate 8 mm

Xmax (peak) 4.5 mm

Xmech 12.5 mm

Overall Diameter 387.00 mm

Bolt Circle Diameter 374.00 mm

Baffle Cutout Dia. 355.00 mm

Mounting Holes 8

Depth (flange to rear) 155.00 mm

Net Weight 6.30 kg

Ordering Codes

Product Code 154FINDX8-298

Downloads

2D Drawing (PDF) 3D Model (STEP)

Frequency Response & Impedance

2D Drawing

Technical Summary

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.

Enclosure Recommendations

ENCLOSURE RECOMMENDATIONS: 154FINDX8-298
Driver: 154FINDX8-298 (154FIND) — 15" Mid-Woofer
Key T/S: Fs=38.0Hz, Qts=0.4, Vas=187.2L, Sens=97.38dB
Power: AES 500W / Cont 1000W / Peak 2000W
Xmax=4.50mm, Sd=881.0cm², Bl=18.1T·m
RECOMMENDED ENCLOSURE TYPE: Bass Reflex (Vented)
PORT RECOMMENDATION: Slot port (full-width or L-shaped internal duct) — provides large cross-sectional area needed for high air displacement; reduces port noise at high SPL
  a) High SPL
     Net Volume: 125 liters
     Tuning (Fb): 44 Hz
     Est. -3dB: 40 Hz
     HP Filter: 36 Hz (24dB/oct recommended)
     Round Port: 100mm dia × 23mm long
     Slot Port: 284mm W × 60mm H × 101mm L
     Port Velocity: 13.9 m/s
     Notes: Strong mid-bass impact, reduced cone excursion, maximum output
  b) Balanced Response
     Net Volume: 140 liters
     Tuning (Fb): 40 Hz
     Est. -3dB: 37 Hz
     HP Filter: 30 Hz (24dB/oct recommended)
     Round Port: 100mm dia × 33mm long
     Slot Port: 284mm W × 60mm H × 122mm L
     Port Velocity: 12.7 m/s
     Notes: General-purpose PA/subwoofer, even response, good transient behavior
  c) Extended Low Frequency
     Net Volume: 150 liters
     Tuning (Fb): 36 Hz
     Est. -3dB: 31 Hz
     HP Filter: 24 Hz (24dB/oct recommended)
     Round Port: 100mm dia × 47mm long
     Slot Port: 284mm W × 60mm H × 152mm L
     Port Velocity: 11.4 m/s
     Notes: Deep bass extension, requires proper system protection below tuning
--- Summary ---
The 154FINDX8-298 is a 15-inch high-output mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivity (97 dB 1W/1m) and controlled low-frequency behavior. The driver uses a balanced motor-suspension design that provides good cone control while maintaining usable output across its operating bandwidth.
In bass reflex enclosures, the driver performs best in net internal volumes of 125 to 150 liters, tuned between 36 and 44 Hz. This alignment provides a balanced combination of low-frequency extension, cone control around resonance, and efficient port loading. Lower tuning improves deep bass extension but increases excursion below tuning, requiring appropriate high-pass filtering. Higher tuning increases sensitivity and output in the upper bass region while improving mechanical control.
The driver is intended for use with high-power amplification (approx. 500 W AES / 1000 W continuous) and DSP control. A high-pass filter in the range of 24–36 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 31–1500 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.

Frequently Asked Questions

- Cost effective design, yet with high spl, extended mid frequency
- Good power handling
- Lightweight paper cone, conex spider

ENCLOSURE RECOMMENDATIONS: 154FINDX8-298
Driver: 154FINDX8-298 (154FIND) — 15" Mid-Woofer
Key T/S: Fs=38.0Hz, Qts=0.4, Vas=187.2L, Sens=97.38dB
Power: AES 500W / Cont 1000W / Peak 2000W
Xmax=4.50mm, Sd=881.0cm², Bl=18.1T·m
RECOMMENDED ENCLOSURE TYPE: Bass Reflex (Vented)
PORT RECOMMENDATION: Slot port (full-width or L-shaped internal duct) — provides large cross-sectional area needed for high air displacement; reduces port noise at high SPL
  a) High SPL
     Net Volume: 125 liters
     Tuning (Fb): 44 Hz
     Est. -3dB: 40 Hz
     HP Filter: 36 Hz (24dB/oct recommended)
     Round Port: 100mm dia × 23mm long
     Slot Port: 284mm W × 60mm H × 101mm L
     Port Velocity: 13.9 m/s
     Notes: Strong mid-bass impact, reduced cone excursion, maximum output
  b) Balanced Response
     Net Volume: 140 liters
     Tuning (Fb): 40 Hz
     Est. -3dB: 37 Hz
     HP Filter: 30 Hz (24dB/oct recommended)
     Round Port: 100mm dia × 33mm long
     Slot Port: 284mm W × 60mm H × 122mm L
     Port Velocity: 12.7 m/s
     Notes: General-purpose PA/subwoofer, even response, good transient behavior
  c) Extended Low Frequency
     Net Volume: 150 liters
     Tuning (Fb): 36 Hz
     Est. -3dB: 31 Hz
     HP Filter: 24 Hz (24dB/oct recommended)
     Round Port: 100mm dia × 47mm long
     Slot Port: 284mm W × 60mm H × 152mm L
     Port Velocity: 11.4 m/s
     Notes: Deep bass extension, requires proper system protection below tuning
--- Summary ---
The 154FINDX8-298 is a 15-inch high-output mid-w...

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.

AES Power: 500 W, Continuous: 1000 W, Peak: 2000 W. Sensitivity: 97.38 dB (1W/1m).

154FIND

Key Features

Quick Specs