Feastrex Field coil power supply unit (PSU)
Our field coil drivers all require a power supply, sold separately. Any DC power supply may be used, although going beyond 17 volts is not covered under warranty…
Feastrex Type III
Type III field coil drivers have yokes, top plates, and pole pieces all made entirely of Permendur, for the true ultimate in field coil driver performance…
Feastrex Type II
Type II field coil drivers’ magnetic circuit use Permendur for the entirety of the top plate and pole piece, in combination with a pure iron yoke.
Feastrex Type I
Type I field coil drivers’ magnetic circuits use a patented square wire coil for 99.9% packing efficiency. This results in a more efficient, powerful, and cooler-running motor.
Feastrex Naturflux Exciter:
The NF5ex is a tremendous value, achieving excellent results with its round wire exciter coil and spherical S10 iron yoke.
Feastrex Monster Alnico
Each “Monster Alnico” motor uses a massive Alnico 5-7 magnet designed to realize ultimate quality in a permanent magnet speaker. To the best of our knowledge, these are the largest magnetic circuits ever made for full-range drivers of their respective diameters.
Feastrex Naturflux
Feastrex’s original patent-pending Naturflux magnetic circuit is an immediately obvious innovation in magnetic circuit technology and represents an incredible value. Not only do Naturflux drivers achieve excellent gap flux density, that flux is extremely stable and able to be put to optimum use.
SB ACOUSTICS-SB26STAC-C000-4
Cast aluminium faceplate
Copper cap for reduced voice coil inductance and minimum phase shift
Non-reflective rear chamber with optimized damping for improved dynamics
Flow optimized vented pole piece for optimum coupling to rear chamber
Fine weave soft fabric dome for smooth frequency response
Saturation controlled motor system for low distortion
CCAW voice coil for low moving mass
Long life silver lead wires
Low resonance frequency
SB ACOUSTICS-SB26ADC-C000-4
Phase optimized diaphragm design for coherent high frequency radiation
Copper cap for reduced voice coil inductance and minimum phase shift
Saturation controlled motor system for low distortion
Non-reflective rear chamber with optimized damping for improved dynamics
Flow optimized vented pole piece for optimum coupling to rear chamber
CCAW voice coil for low moving mass
Long life silver lead wires
Low resonance frequency
SB ACOUSTICS-SB26STCN-C000-4
Copper cap on pole piece for reduced voice coil inductance and minimum phase shift
Fine weave soft fabric dome for smooth frequency response
Inherently shielded neodymium motor system
Internal pressure equalization and flow resistor for non-resonant coupling of cavities
Compact design
CCAW voice coil for low moving mass
Long life silver lead wires
Low resonance frequency