ALQ - Air Core Bobbin Coil

* click here for a certification of compliance

PURITY GUARANTEERoHS Compliant

“Great sound and stability”

ERSE’s ALQ coils are wound with high purity OFC copper and feature ERSE’s PURITY GUARANTEE. The ALQ coils feature precision custom molded high temperature polycarbonate bobbins. ERSE’s polycarbonate material offers greater stability, temperature ratings and a higher insulation factor than our competitors nylon or ABS material. The ALQ’s are wound with our custom built computerized winding equipment and hysteresis tension devices; which allows for a more uniform coil free from the smear caused by mechanical tension devices. Each ALQ coil is wrapped with glass cloth acetate tape to protect the winding from damage. All ALQ’s polycarbonate material adheres very well to most adhesives and offers a center hole for additional mounting techniques.

All ALQ inductors are lead free (RoHS Compliant)

  • Low D.C.R.
  • Low Skin Effect Losses
  • Low Self Capacitance
  • Linear A.C. Resistance
  • Low FM Distortion
  • Constant Inductance with Voltage and Current Variation
  • No Saturation Distortion
  • No Hysteresis Distortion
  • RoHS Compliant

  erseaudio logo Mundorf Jantzen Solen Intertechnik Result
Trade name XQ coils BL140 Perfect Lay Air Coils CU 1.4mm  
Wheeler formula Yes No Yes No No Higher DCR and lower Q factor
Varnish Impregnated Yes Yes Yes No No Varnish impregnated coils offer the lowest possible microfonic distortion
Hysteresis tension devices Yes No No No No Inconsistent winding factor and DCR’s
Precision Orthocyclic tooling matched to .001” Yes No No No No Improved matching of coils. Lower inductive tolerance.
Computerized layer winding Yes No No No No Improved layering and lower DCR.
Purity Guarantee
Click here for details
Yes No No No No Unknown purity and conductivity can result in smeared sound

Tolerance

1% 3% 1% 3% 3% Lower tolerances can assure your coil is closer to the advertised value
1.0mh #14AWG coil DCR CLAIMED 0.208 Ω 0.30 Ω 0.21 Ω NA 0.28 Ω Higher DCRs result in increased power loss and reduced performance.
1.0mh #14AWG coil DCR MEASURED 0.211 Ω 0.306 Ω 0.215 Ω NA 0.293 Ω Higher DCRs result in increased power loss and reduced performance.
  erseaudio logo Mundorf Jantzen Solen Intertechnik Result
Trade name EQ coils L100 Air coils NA CU 1.0mm  
Wheeler formula Yes No No NA No Higher DCR and lower Q factor
Bonded coil Yes Yes
optional
Yes NA No Bonded coils offer lower microphonic distortion
Hysteresis tension devices Yes No No NA No Inconsistent winding factor and DCR’s
Precision Orthocyclic tooling matched to .001” Yes No No NA No Improved matching of coils. Lower inductive tolerance.
Computerized Orthocyclic layer winding Yes No No NA No Improved layering and lower DCR.
Purity Guarantee
Click here for details
Yes No No NA No Unknown purity and conductivity can result in smeared sound

Tolerance

2% 3% 3% NA 3% Lower tolerances can assure your coil is closer to the advertised value
1.0mh #18AWG coil DCR CLAIMED 0.471 Ω 0.49 Ω 0.55 Ω NA 0.60 Ω Higher DCRs result in increased power loss and reduced performance.
1.0mh #18AWG coil DCR MEASURED 0.482 Ω 0.531 Ω 0.572 Ω NA 0.581 Ω Higher DCRs result in increased power loss and reduced performance.