[sdiy] BBD's in series and accumulative S/N ratio degradation.

[aankrom]

I have several MN3006's that I thought of using, but to get longer 
delay times, I plan to use two or three in series. Am I right in 
thinking that the S/N ratio would be the same as that of a comparable 
single BBD's S/N ratio? That is you don't just add up what appears to be 
accumulative S/N ratio loss based on the rated S/N ratio of the device 
since it's in dB's. Like if two people are talking to you at a level of 
60 dB's each, the sound level isn't 120 dB's, but rather 63 dB's. I know 
that under-clocking the MN3006 would make the S/N ratio sucky for 
sure... Not to mention limiting the bandwidth...

AA