Overview
The MagneTek Triad F-325X is a vintage filament transformer engineered for restoring and repairing classic audio and video equipment. This compact transformer delivers 12.6VCT @ 1.5A secondary output from a standard 115VAC, 50/60Hz primary input. The MagneTek Triad F-325X is built to provide stable, regulated filament power for vacuum tube heaters and other low-voltage AC applications in vintage electronics, making it an essential component for audio amplifier restoration, tube radio repair, and television maintenance.
Key Features
- Secondary output: 12.6VCT @ 1.5A for reliable filament heating
- Primary input: 115VAC, 50/60Hz standard wall power
- Compact, space-efficient design suitable for vintage equipment enclosures
- Center-tap secondary winding for flexible voltage configurations
- Stable output under standard loading conditions
- Proven reliability in decades of vintage audio/video applications
Technical Specifications
- Secondary Voltage: 12.6VCT (center-tap)
- Secondary Current: 1.5A
- Primary Voltage: 115VAC
- Frequency: 50/60Hz
- Approximate VA Rating: ~18.9VA
- Secondary Wire Colors: Blue, Yellow, Blue (typical Triad color code)
- Primary Wire Colors: Black, Black (typical Triad color code)
- Winding Configuration: Single Primary, Single Secondary with Center-Tap
- Mounting: Chassis mount with solder lug terminations
Typical Applications
- Vacuum tube filament heating in vintage audio amplifiers
- Tube radio and audio equipment restoration
- Vintage television receiver repair and maintenance
- Antique electronic equipment restoration projects
- Test and measurement equipment with tube-based circuits
Compatibility & Replacements
Compatible With
- Vintage tube-based audio amplifiers and preamplifiers
- Classic radio receivers and tuners
- Antique television sets and video equipment
- Tube test equipment and measurement instruments
- Any legacy equipment requiring 12.6V filament heating at up to 1.5A
Replaces / Drop-In Replacement For
- Original MagneTek Triad F-325X units in restoration applications
- Equivalent Triad 12.6VCT @ 1.5A transformers with similar pinout and mounting footprint
- Other vintage filament transformers with matching 12.6VCT / 1.5A specifications in compatible chassis
Works With
- Standard 115VAC residential and commercial wall power circuits (50/60Hz)
- Vacuum tube circuits designed for 12.6V filament supply
- Vintage audio restoration and DIY electronics projects
- Legacy equipment requiring Class-2 low-voltage filament power





