Audio input, what is safe to connect


#1

Wondering what the safe range of audio voltages would be for the audio in jack. I am currently running the unit from a headphone amp no issues. Can I use this on my home theater AVR and connect the jack in parallel with the power amp output? (full speaker driving output).

Thanks!


#2

Hi Matthew, the equalizer chip datasheet doesn’t include any details on input voltage range oddly enough.

I followed the recommended circuit in that datasheet which has a high resistance and a cap separating the audio signals from the input to the chip. I don’t think you will damage anything by trying. Please let us know if this works!


#3

Thanks for the info. That is not the best data sheet ever made is it!

I will give the direct connection a trial and report back.


#4

Finally got around to changing the cable to direct connection to speaker output. Works much better. Issue may be at high volume that even on level 1 gain it might peak. Ah well! Looks great on normal volumes


#5

Glad it’s working! Sorry I don’t have any suggestions on how to avoid peaking on high volumes. There’s probably a simple circuit you could put between the speaker output and the audio input, but this isn’t my area of expertise.