Hi, 

I am working right now on a beocord 7000 Tapedeck an I am doing the electronic adjustments. The problem is, that I don't have a db meter, only a good AC-Voltmeter which can measure millivolt in high frequencies. But I have to convert this to db. 

In one chapter of the service manual the Manuels tells me to adjust to 0db. But nowhere in the manual stands what reference 0db is: 0,775 or 1 V. I think it might be 0,775. 

Can anybody help me with this? 

Christina