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18" | 181XR
Neodymium Woofer
Key features:
  • Cone excursion 56mm !!Patented design.

  • 1 demodulation copper ring, powerful and innovative motor structure, innovative venting system

  • Double spider with spacer, woven-in tinsel wires, reinforced cone edge.

Design notes:
    • Designed based upon the 18XR, the 181XR was designed for professional audio segment. The basic characters and design concept remains the same for the 181XR. We have used newly designed 4 roll waterproof fabric surround that fully supports the high cone excursions of this incredible loud-speaker.
      The target was to push the envelope of possibilities. We
    • are giving you a product that will not limit you to achieve even your wildest sub-woofer dreams.
      Motor Design
      The magnetic design incorporates large neodymium magnets placed along the voice coil winding. This has allowed us to push the cone excursion to 44mm peak to peak. Unique gap venting ensures good air circu-lation
    • and greatly improves the reliability of this driver. We have also developed a new technique for manufacturing deep copper caps.    
      The design further utilizes dual, uncom-monly large, spiders, spaced with spacer, hot-pressed tinsel wires onto the top spider, reinforced cone edge, reinforced surround to cone joint, reinforced spider to basket joints, etc.
Specifications:
    • General specs
      Nominal Diameter:18 in.
      Rated Impedance:4 Ohm
      Power handling
      AES Power:1,200 Watts
      Program Power:2,400 Watts
      Peak Power:4,800 Watts
      Voice Coil
      Diameter:4 in.
      Winding wire:Copper
      Former:Glass Fiber
      Winding height:22 mm
    • T/S Parameters
      Resonant frequency:30 Hz
      Re:3.3 ohm
      Qes:0.24
      Qms:13.2
      Qts:0.23
      Vas:195 liters
      Sd:1256.6 cm2
      Sensitivity:97 dB
      Mms:306 grams
      Bl:28.3
      Le:1.3 mH
    • Design details
      Surround Material:Fabric
      Cone material:Paper
      Spider:Nomex
      Plate thickness:56 mm
      Peak to peak linear cone Displacement44.4 mm
      Overall diameter:467.6 mm
      Bolt circle diameter:442 mm
      Baffle cutout dia.:442 mm
      Number of mounting holes:8
      Depth (flange to rear):257.2 mm
      Net weight:14.5 kg
    • Ordering codes:181XR-X4 ohm-350
       
      Recone kits:                    RC181XRX-350
      In many cases REDCATT
      produces 4 ohms, 8 ohms and 16 ohms versions. Indicate what impedance do you need     in your request.
      Download:
      Spec download
      2D drawing
      3D model
Frequency response & lmpedance
2D drawing
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Redcatt

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REDCATT designs and manufactures world class loudspeakers. Additionally to the loudspeakers sold under REDCATT brand name, we also design and manufacture OEM / ODM loudspeakers.
Copyright © 2012-2026 REDCATT Technology CO., LTD. All Rights Reserved
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CX6F-140F
Neodymium Woofer
18" | 181XR
Key features:
  • Cone excursion 56mm !!Patented design.

  • 1 demodulation copper ring, powerful and innovative motor structure, innovative venting system

  • Double spider with spacer, woven-in tinsel wires, reinforced cone edge.

Design notes:

Designed based upon the 18XR, the 181XR was designed for professional audio segment. The basic characters and design concept remains the same for the 181XR. We have used newly designed 4 roll waterproof fabric surround that fully supports the high cone excursions of this incredible loud-speaker.
The target was to push the envelope of possibilities. We are giving you a product that will not limit you to achieve even your wildest sub-woofer dreams. Motor Design
The magnetic design incorporates large neodymium magnets placed along the voice coil winding. This has allowed us to push the cone excursion to 44mm peak to peak. Unique gap venting ensures good air circu-lation and greatly improves the reliability of this driver. We have also developed a new technique for manufacturing deep copper caps.
The design further utilizes dual, uncom-monly large, spiders, spaced with spacer, hot-pressed tinsel wires onto the top spider, reinforced cone edge, reinforced surround to cone joint, reinforced spider to basket joints, etc.

Specifications:
General specs
Nominal Diameter:18 in.
Rated Impedance:4 Ohm
Power handling
AES Power:1,200 Watts
Program Power:2,400 Watts
Peak Power:4,800 Watts
Voice Coil
Diameter:4 in.
Winding wire:Copper
Former:Glass Fiber
Winding height:22 mm
T/S Parameters
Resonant frequency:30 Hz
Re:3.3 ohm
Qes:0.24
Qms:13.2
Qts:0.23
Vas:195 liters
Sd:1256.6 cm2
Sensitivity:97 dB
Mms:306 grams
Bl:28.3
Le:1.3 mH
Design details
Surround Material:Fabric
Cone material:Paper
Spider:Nomex
Plate thickness:56 mm
Peak to peak linear cone Displacement44.4 mm
Overall diameter:467.6 mm
Bolt circle diameter:442 mm
Baffle cutout dia.:442 mm
Number of mounting holes:8
Depth (flange to rear):257.2 mm
Net weight:14.5 kg
Ordering codes:
8 ohm version:181XR-X4 ohm-350
Recone kits: RC181XRX-350
In many cases REDCATT
produces 4 ohms, 8 ohms and 16 ohms versions. Indicate what impedance do you need     in your request.


Download:
Spec download
2D drawing
3D model
Frequency response & lmpedance
2D drawing

Phone: (+86) 769 8318 1898    Email: info@redcatt.net

Copyright © 2012-2026 REDCATT Technology CO., LTD. All Rights Reserved