Coils

ERSE manufactures the finest audio coils in the world today! This is evident in the fine “Q” series of coils listed on the right that we manufacture for the world’s finest quality speaker manufacturers.

This is a bold statement, but with our 42 years of experience we are confident that you will not find a better audio coil anywhere; not Germany, not Denmark, not China, nor the USA. Quite simply put if you want the best sound from your system your choice should be none other than ERSE’s Q line of coils.

Quality coils begin with quality components. All of our “Q” series offer our . This states that we will not manufacture any “Q” series coils unless the wire meets 99.99% pure copper and meets the criteria of oxygen free.

Our wire is made from CDA 101 copper cathode while most of our competitors wire is made from CDA 110 or less, which is a lower grade of wire commonly used in lamp cord and can offer a purity level as low as 97.3%!

We constantly monitor our wire purity by sampling production and have it tested at a metallurgic lab to insure it is made from CDA 101 oxygen free copper; this is our guarantee.

Stacked against our competitors, ERSE stands out as the best. As many of quality manufacturers do; we to insure that we are offering a higher level of quality at a competitive price. During a recent sampling we sent our coils and some of our competitor’s coils to an independent metallurgic lab for a review of copper purity.

Not to our surprise our standards met the CDA 101 requirement mentioned above, but to our surprise one of our competitors in Denmark had only a purity level of 97.9% and other European competitors had purity levels of 99.1%. This low purity creates the weakest link in your sound system.

Imagine a non distorted music note leaves your amplifier at the speed of electrons. It travels about 10 feet down your high quality speaker cable and to your speaker where it then meets about 300 feet of low purity copper coil wire. Your musical note has just been compromised due to a lower purity of copper which decreases the electrical conductivity.

DEMAND uncompromising quality; insure your system is built with ERSE’s “Q” line of coils with the .