radiance
Well-known member
geoff004 said:What did I miss or leave out?
First of all, very nice build!!!!
I've used THAT 1243 and THAT 1203 line receivers in my mixer project. So far no problems when connecting something with transformers.
I had a (very quick) look at both data sheets (1510 and 1243) but could not find anything apart from the 1243 having a higher input impedance (1510 has 10K, 1243 has 21K). AFAIK these two are not pin compatible :-( otherwise you could have tried replacing the 1510 with a 1243.
Anyway, I think this is a impedance problem. The 1510 is designed as mic pre IC. I'm not good at this but the answer should lay somewhere in the 1510 data sheet I guess. Does the distortion change at various gain settings?