3rd gen entune audio curve graph

Im tuning my dsp, and I think this picture might be helpful to some of you guys.

This is the stock radios output graph.

audio correction (setting under apps->audio) is off
bass is 2nd tick to the right.
pink noise being played at volume 30

I will get another with the bass in the center on my lunch break.

If anyone has any setting requests let me know what setting you want me to put the radio at and I will get a graph.

 

I wouldn't mind seeing a flat EQ, pink noise at volume 10, 20, 30, 40, and 50 so we can see how much bass roll-off the radio has, and what volume level it starts to suffer at.

Also, possibly the same as listed above, but front channels vs rear channels. I try to preach how limited our rear channels are and having a graph to show people would help (or prove me wrong, which is fine too)
People always want to get signals for their subwoofer from the rear signals and it hurts me to see that

 

I'll run those for you today.

And yeah, the rear is not what you want to get sub signal from. While the rears are full range, the volume on them is less than half the front.

 

Yeah I've done some basic testing with a multi-meter and a good ol' 40hz test tone. It's abysmal. Only thing worse I've ever tested was the rear speakers on a jeep wrangler. Those may as well not even be there.

 

Here are some graphs of the stock outputs, all settings are set to middle/off in the radio. Seems at higher volumes the bass is boosted alot.

I will get some rear channel readings later today.

volume level 10



volume level 20



volume level 30




volume level 40

 

Is this for the regular radio (control knobs on top of screen), the premium entune (control knobs on bottom of screen), or the JBL radio (also control knobs at bottom of the screen).

What's the frequency of the pink noise signal you are feeding it? I am off the belief that the premium entune radio definitely rolls off the bass above volume level 30 on the radio - so frequencies in the 20 to 60hz range are "suppressed" as the volume gets above 30 in order to protect the factory speakers.

I'm not familiar with the DSP you are using but why does the "50dB" indicator remain constant for the different volume levels you are testing? I would expect it to change as you raise the volume (ie: sound pressure levels should increase with an increase in volume).

 

I am using the premium entune (non-JBL)
I was using this audio file on bluetooth settings (I dont have a pink noise cd)
https://www.youtube.com/watch?v=6ZEFb6Zi3sI

The dsp I am using is a audiocontrol DM810. the 50db is just the sensitivity of the graphs. When the volume gets higher, you click on a higher db so its not spiking above the the limits on the graph. I left them all at 50 to show the volume increase with each volume level. At level 40, the bass would peak above the limits on the graph.


I too thought that the bass would drop off as the volume gets higher, but it seems to be the other way around.

Ill have to try out some of the audio correction settings in the radio, there are 4 options - off/low/med/high.



Another thing I really want to see is if there is a speed roll off or boost. In some of my other cars, as you got to a certain speed, the bass would be boosted to overcome the car traveling faster and the sound waves getting left behind you.






EDIT: I just got some pink noise and sweeps from dynaudios web site, going to load them onto my ipod and run more tests with that. Wav files wired right into the usb port should be better than a random youtube video on bluetooth.

https://www.dynaudio.com/support/pink-noise

 

I know for sure bluetooth quality suffers a lot on these radios.

You can get pink noise files here
https://www.kicker.com/key-smart-amplifier

That's crazy about the bass getting boosted at higher volumes. I'd be curious if this is exclusive to bluetooth (which I doubt) or of it acts differently via USB or aux.

 

I got some files from dynaudio, going to load them onto my ipod and try again. I also want to try line in, and also burn the files to a cd and see what I get from that. Be interesting to see what the same files give depending on the input carrier.

They are all wav files
bit rate 1411 kbps
sample size 16 bit
sample rate 44100 khz

 

The manual for the radio says it does have the ability to have the tone optimized for road noise based on speed. I would expect that if you have it set to "off" there should not be any bass boost at higher volume levels.

The system adjusts to the optimum volume and tone quality according to vehicle speed to compensate for increased vehicle noise.
Select the “Automatic Sound Levelizer”. 3 Select the “High”, “Mid”, “Low”, or “Off”.

https://www.toyota.com/t3Portal/document/omnav-s/OM04019U/pdf/OM04019U.pdf

 

When I set up my home theater I burned wav files to a cd at different frequencies. I would think anything in the 20 to 40hz frequency would be a good range to test the existence of bass roll off at higher volumes.

 

I would be interested to see at what speed this does anything at, and what the levels are for each setting/speeds

 

Very interesting - thanks for doing this. I'm curious to see the difference between the sources.

 

When the kids go to bed, Ill be back out there again. I need to do some tuning and get the sub put back in.

Ill try to get some readings then.

 

It looks like someone was setting up for good presence and sibilance but the nuke between 200 and 400 is a bit much, I mean that's like -9dB, what the hell? People do that to try and clean up some "mud" but there are consequences, especially with it being that drastic. Also, 12dB between 50 and 100 is insane (Volume level 40). At the lower fader settings it's much less egregious.

It's better to make those changes in the master and have the system tuned closer to a flat reference. This monkey business is the reason everyone's stuff sounds completely different, which would be frustrating to have as an artist. You can't even set SPL accurately with the spectrum set so wildly, and trying to compensate for it on output is just going to create more distortion.

I'd be interested to see the measured response to know if they're compensating for some acoustic anomaly in the cab.

 

That will be a future plan for me. I need to get a good RTA mic to set up in the drivers seat so I can get some actual speaker outputs in the cab. I know mine will be considerably different than most people since im running a fully active 3 way components in the front, but I can always turn the mids off and make it act like a 2 way component system.

I will say that when I run the "auto eq" from audio control it knocks all those humps down and presents a flat output to my amps, but it sounded like complete garbage when the output was flat. Im guessing there is something going on with the acoustics of the cab for that signal to make sense.

I can run a RTA with my phones mic, it wont be great, but it will give an idea of whats going on.

 

When I get a chance I'll run that pink noise file to see if it's actually flat. I have a couple RTAs I can compare it on. I haven't used these yet but I was going to check them out next time I set microphones up in the truck. Maybe there's a difference than something from Youtube.

https://www.audiocheck.net/testtones_index.php

 

Gobs of test tracks

 

Definitely not flat. 20 dB difference from 20 to maybe 18k where it falls off a cliff.

 

Linear plot look a lot flatter. Still pretty fat on the bottom end