Custom Voice Coils
Custom voice coils have been the core of our business at Precision Econowind since we began producing electric coils over 40 years ago. Round, rectangular, D-shaped, flat wire or custom shaped coils can be produced using precision layering practices. Single layer, multilayer, wet wound, dry wound, bifilar, multi-filar, dual, and quad coil configurations are available. Custom manufacturing solutions can be designed for a range of sizes and coil configurations. Copper, aluminum or CCA wire from #16 AWG to #48 AWG can be used to create voice coils with inner diameters ranging from 0.232”-10.0”. Custom inner diameters can be fabricated with custom tooling if required. Tolerances as tight as ±0.001” can be held on inner diameter dimensions.
Coils are wound using our proprietary high-temperature adhesive capable of withstanding operating temperatures upwards of 500°F. This attribute has led customers to turn to us when competitors’ coils have come apart due to adhesive failure. Precision layering techniques and flat winding capabilities allow us to produce coils with the highest possible turn density, providing superior performance and sound characteristics. Winding with flat wire, since we do the flattening in-house, allows us to custom fit a customers’ electrical specifications (DCR, turns) into their physical specifications (ID, OD, winding width) for a much more efficient use of space. Electrical testing including resistance, inductance, and turns count testing can be performed to customer specifications. Standard lead time on voice coils is 3 weeks with additional time for new tooling if applicable. We accept blanket orders and can stock items for customers as part of our commitment to provide the highest quality service available. For more information about our custom voice coil winding capability, see the table below or contact us directly.
CUSTOM VOICE COILS CAPABILITIES
- General Capabilities
- Accommodate Customers’ Custom Designs
Contract Production Small Parts
Precision Layered
- Coil Shape
- Round
Rectangular
D-Shaped
Other Custom Shapes
- Coil Winding Process
- Free Standing Wound on thin film material (Polyimide, Aluminum, Fiberglass)
Single Layer
Multi-Layer
Wet Wound Flat Wire (Edge Wound or Flat Wound)
Bifilar Windings
Multifilar Windings
Dual Coils
Quad Coils
- Wire Material
- Copper
Aluminum
Copper Clad Aluminum (CCA)
- Wire Shape
- Round
Rectangular
Flat
- Insulation Material
- Low Temp (155°C)
High Temp (220°C)
- Max Adhesive Temperature Rating
- > 220°C
- Wire Size (AWG)
- #16 to #48 AWG
- Voice Coil Winding Inner Diameter (ID) Range
- 0.232” – 10.0”
Other sizes available with custom tooling
- Winding Inner Diameter (ID )Tolerance (+/-)
- ±0.001” to ±0.003”
- Added Value Processes for Coil Finishing
- Stripping and Tinning leads
Tinsel Attachment
- Coil Winding Equipment
- Manual Coil Winding Machines
CNC Coil Winding Machines
Soldering Irons/Posts Soldering Equipment
Automated Stripping Automated Tinning
- Testing Equipment
- Ohm Meters
Inductance Meters
Turns Counting Equipment
- Testing Capabilities
- Resistance
Turns Count
Inductance
- Secondary Services
- Assembly
Blanket Orders - Carrying Stock for Customers
- Production Volume
- Prototype
Small Run
Large Run
- Typical Lead Time
- 3 Weeks Typical Additional Time Required for Tooling
ADDITIONAL INFORMATION
- Industry Focus
- Loudspeaker
Consumer Products
Industrial Components
- Intended Applications
- Loudspeakers Voice Coil Motors
Space Constraint Applications
- Industry Standards
- ISO 9001:2015
ISO 14001
ISO 13485:2003
- File Formats
- PDF
Custom Sketches
Verbal Descriptions