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YEAR
WARRANTY
Scan the QR code using a smart-phone device,
for product warranty registration online.
Est. 1973
W i n d s o r E a r l
W i n d s o r D u k e
User Manual
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Summarization of Contents

Designer's Notes
The Road to Excellence
Introduction to the design team and the philosophy behind the Windsor series.
Windsor Highs: Tweeter Design
Details the design and components of the Windsor series tweeter for optimal treble performance.
Cabinet Construction and Optimization
Explains the dual-layer MDF cabinet and bracing for rigidity and resonance damping.
The Final Crossover Design
Describes the 4th order LKR crossover and the use of air core inductors.
Loudspeaker Installation
Unpacking Your Loudspeakers
Instructions for safely unpacking the product and checking for damage or missing items.
Positioning Stereo Loudspeakers
Guidance on optimal placement and 'toe-in' angles for the best listening experience.
Standard Connection Guide
Step-by-step instructions for connecting the speakers to your amplifier correctly.
Caring for Your Loudspeakers
Advice on maintaining the speaker finish, cleaning, and protecting from environmental factors.
Warranty Coverage
Online Registration and Warranty Terms
Details the 3-year warranty, registration requirements, and eligibility for new purchases.
Warranty Exclusions
Lists specific conditions, damages, and types of products not covered by the warranty.
How to Claim Warranty Service
Procedure for obtaining warranty service, including packing and shipping instructions.
Repairs and Liability Limitations
Information on authorized repairs and limitations of Castle's liability for connected products.
Service Centre Contact Information
Contact details for technical support, servicing, and product queries.
Technical Data
Windsor Duke and Earl Specifications
Detailed specifications for the Windsor Duke and Windsor Earl loudspeaker models.
Windsor Duke and Earl Stand Specifications
Technical specifications for the custom-designed speaker stands.