“Original Altec drivers made by same Engineers that made the famous Altec Lansing drivers! Now they are called GPA or Great Plains Audio. If you want to modify your Altec speakers or make a new one using the real good Made in the US of A, give them a call. The only high end handmade Speaker drivers in the US with US made components. All original ALTEC toolings, parts and people that built the speakers. Amazing, that we still have this companies” Thanks Santos Oropel for the info.