Clarification, this is a polyurethane primer, I will be make veneer on the on cabinet's with "Birds of Maple".The first home tests are good.My current surround speakers of " Technics" CA-10 with a good sound from 1997, they are sadly retreated himself ...
After the measurements, this is are Technical data:Frequence Range; 33-25000 HzLong term Max Power; 200 WCrossover Frequency; 2800 HzImpedance; 4 OhmsSensitivity; 90 db SPLCabinet Volume; 31 LGross weight / without stand /; 27kg.Joro RaitchevSofia- Bulgaria