I no longer have them, I had two pairs at one time. Never did find out much about them, and only ever heard of two other pairs in all my searching here and elsewhere. They are efficient, loud speakers great for Rock music, but not maybe your best choice for delicate Jazz & Classical. For $50 I'd grab them if you want a great speaker for Rock music. Easy to refoam if needed, fused so the tweets are likely fine as well.