We did, however, find a few things along the way where we thought there was room for improvement. The noise floor, for example. If you purchased the separate A-33 mu shielding can for the original A10, you could expect about 15dB of hum reduction. The internal shielding package on our CT-A10 reduces hum by more than 27dB.
Then there are all those taps and terminals. The original A10 was a standard catalog item that could match a lot of impedance ratios depending on how it was connected. But many applications simply used the inputs and outputs in series for a 1:10 ratio, So, we offer several versions with just those 5 connections – 2 ins, 2 outs and a case ground on flexible leads. These versions are built exactly the same as their older brother – we just make the interconnects internally. Not only will that simplify your assembly process, it will also save you $20 per copy.
This 5 lead option also makes it much easier to generate custom variations. The A10 is historically significant, but it’s also a great mic input xfo package. It’s large size and hum bucking construction would produce great results as a 1:2, 1:8, or 1 to almost anything. FYI – most custom variations will cost about the same as the base CT-A10L