[bbfoto]

Very interesting , I didn't know you test each driver for clipping and thought you test your amps and headunit and be done. The build is looking very pro , keep up the good work. I'll checking the entire build progress !!

With the last picture that shows the oscilloscope, I believe that he actually is testing the electrical signal from each amplified channel of the OEM system, not the acoustic "clipping point" (distortion) of each speaker.

 

[bbfoto]

bbfoto is right.
Since Im using the OEM hu as one of my inputs into the DSP, I wanted to know the clipping volume to be able to adjust gains down the rest of the gear with a clean signal.
The amps are here, just waiting on the speakers and this should move pretty fast.
J.

Unfortunately, my experience with the SQ of all of the Toyota OEM head units or amplified systems I've done aftermarket installs in has been far from stellar. So, if possible, try to have the option to use a secondary "clean & pure" SQ source into your DSP using another input/preset, such as a portable DAP, etc.

EDIT: DOH! You already covered that in your OP. I should have known better from this being another well thought out and high end Jorge/doitor install! 😊 :bowdown:

 

[bbfoto]

Been playing with Justin and Ericas tuning companion Updated Justin tuning sheet ( Justin and Erica tuning... and used it to generate different target curves. Loaded them to Dirac 4 each time to the DSP and been auditioning. Its pretty sweet to hear the difference.
Made a graph to compare the curves.
View attachment 362268

Nice. Agreed that there is a wide variance between a lot of these that will be obvious when you hear them. What's the difference between your "Half Whit." and ".5 Whit"? (I haven't yet had time to play with the updated Zazzi/Erica tuning sheet).