p_wats
Well-known member
I've built and tested my Unicab board, but am now curious about adding some additional features that things like the H&K Red Box or Omnicabsim incorporate. Specifically the following:
A balanced output: I'll probably tack on the Tataylino Simple DI
Line/speaker input: The Omnicabsim says it can't handle the signal direct from an amp head, but the H&K Red Box says it can (just remember to add a "Thru" for the speak to still receive a load, which the H&K schem says is just connecting the tips of the jacks). I'm curious about this, as the Tagboard schematic for the Red Box shows the only difference between the speaker and line inputs is that the former hits a 470K resister first and the latter, only 47K.
Would it be as simple as having a toggle to select either input resistor (and maybe a third option for instrument level, which I assume would be the lowest if anything at all)?
A balanced output: I'll probably tack on the Tataylino Simple DI
Line/speaker input: The Omnicabsim says it can't handle the signal direct from an amp head, but the H&K Red Box says it can (just remember to add a "Thru" for the speak to still receive a load, which the H&K schem says is just connecting the tips of the jacks). I'm curious about this, as the Tagboard schematic for the Red Box shows the only difference between the speaker and line inputs is that the former hits a 470K resister first and the latter, only 47K.
Would it be as simple as having a toggle to select either input resistor (and maybe a third option for instrument level, which I assume would be the lowest if anything at all)?