Yaris Sedan Deadening and Sound system upgrade

[derickveliz2]

Well we learn something every day, and I wanted to share with you:

For me it's tuning time and I love it, what a nice experience going through all the variables and learning what does what. Last week my LOWS (HAT L6s in OEM location in doors running from 63Hz to 160Hz or so) got disconnected so I had the chance to drive without LOWS.... for a while

Just before that I wanted to play a little with my Woofer settings because for some reason the lower frequencies stage was kind of leaning towards the right side of the car (what I mean here is that the "BEAT" from drums for example couldn't feel it symmetrically speaking), in my mind I thought it was the Woofer enclosure that fires up front slightly on the right side of the car. But when I was without LOWS my lower frequencies stage was perfect, right from the center of the dashboard and not leaning towards the right side. So now I knew it wasn't the upfront woofer causing this, the LOWS are the issue.

After fixing the LOWs I looked for some pink noise, the lowest I had available that day was 200Hz and started playing with Time Alignment (T/A) this is how I can control when the signal from each speaker gets to my ears, the idea is to delay left side and speed up the right side, and fool my brain like if I was exactly in the middle of the speakers. By pure experimenting changing these parameters I was able to move the stage from side to side, I did isolate the LOWs, it's like magic. At the end of the day the BEAT (low frequencies) was right in the center, at the beginning I thought that the song had recorded towards the right side the drums, but it was constant in various songs, it wasn't the woofer, it was the LOWs, many thanks to technology for providing us the tools.

D.