Hi,
Ive been using the Dual Opamp schematic from sound-au.com below to convert unbalanced to balanced however the circuit assumes you want a gain of 1 or over.
Im using it to convert a instrument level signal to a balanced mic level and adding a 40db Upad on the output however I can see that it is adding quite a lot of noise to the waveform, not necessarily audible. The Circuit is possibly also loosing a very slight bit of 'presence'.
![Screen Shot 2022-10-25 at 10.02.16 am.png Screen Shot 2022-10-25 at 10.02.16 am.png](https://cdn.imagearchive.com/groupdiy/data/attachments/51/51790-951264d5e8da01bcb0c97c4b407f068b.jpg)
As an alternative would it work to attenuate within the circuit block starting with the - inverting input for U1A and then to the noninverting + input and if so would it achieve better results than adding a large Upad to the output?
Thanks,
AD
Ive been using the Dual Opamp schematic from sound-au.com below to convert unbalanced to balanced however the circuit assumes you want a gain of 1 or over.
Im using it to convert a instrument level signal to a balanced mic level and adding a 40db Upad on the output however I can see that it is adding quite a lot of noise to the waveform, not necessarily audible. The Circuit is possibly also loosing a very slight bit of 'presence'.
![Screen Shot 2022-10-25 at 10.02.16 am.png Screen Shot 2022-10-25 at 10.02.16 am.png](https://cdn.imagearchive.com/groupdiy/data/attachments/51/51790-951264d5e8da01bcb0c97c4b407f068b.jpg)
As an alternative would it work to attenuate within the circuit block starting with the - inverting input for U1A and then to the noninverting + input and if so would it achieve better results than adding a large Upad to the output?
Thanks,
AD