DD-1 settings on CD vs MP3 on ipod question

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I have a similar situation. Setting the gains with the CD means that when I use my 4g iPod nano through the full speed iPod cable connected to my Alpine 9887r the bass is noticeably quieter. If you reset the gains using the DD1 tones on the iPod the gains will go up before showing distortion, for this I downloaded the tones off the D'Amore and put them on my iPod.

Link to the test tones as found on the D'Amore site

https://files.secureserver.net/1sQHliMu6YbY7V

Of course you will only be setting the gains for use with the iPod, there is no guarantee that what you play through the CD player will be "clean" of any distortion.

[Torres]

i set the system with whatever the main listening source is. if it were to change, i'd re-tune. it's quick, so better to take a few minutes to tune than ruining your equipment.

[Smoove]

I have a feeling I will be doing a retune. Thanks for the file download.

[Wicks]

I have a feeling I will be doing a retune. Thanks for the file download.

Digging up an old thread.

Did you ever figure out your issue?

I ask because I recently stumbled on this exact issue.

I was noticing MUCH lower output when using my iPhone then with regular CD's.

I did all kinds of measurements through many different sources and got all kinds of varying output voltages from my HU.

Today I was doing more measurements and I remembered something Tony D said in another thread about iTunes and the "Sound Check" option.

My iTunes was set correctly with it off, but I never knew my phone also had that damn setting.

I found the setting on my phone and turned it off.

Low and behold my HU output voltage jumped from ~1V to the normal 4.8V!

Hope it helps, if not sorry for bumping an old thread, but I wanted to spread the word around 'cuz I'm sure more people have been stuck with this.

[SnowDrifter]

I have a feeling I will be doing a retune. Thanks for the file download.

Digging up an old thread.

Did you ever figure out your issue?

I ask because I recently stumbled on this exact issue.

I was noticing MUCH lower output when using my iPhone then with regular CD's.

I did all kinds of measurements through many different sources and got all kinds of varying output voltages from my HU.

Today I was doing more measurements and I remembered something Tony D said in another thread about iTunes and the "Sound Check" option.

My iTunes was set correctly with it off, but I never knew my phone also had that damn setting.

I found the setting on my phone and turned it off.

Low and behold my HU output voltage jumped from ~1V to the normal 4.8V!

Hope it helps, if not sorry for bumping an old thread, but I wanted to spread the word around 'cuz I'm sure more people have been stuck with this.

Lots of head units let you set individual volume levels for each of the playback modes. At least mine does.

If yours has that, you can set it so everything distorts at the same volume. Or if you only play it through an auxiliary cable or thumb drive or something, just set it according to that.

[Smoove]

I have no idea if my old 9861 will allow me to set playback modes. I will have to check. Chances are it's too old for that feature, but I will check.

I quit using the Itouch. Played with the EQ settings on a Ipod Nano Gen 3 I picked up. I liked the way the piano settings sounded. So using that setting I did a retune with the DD-1. With that tune the cd player still sounded good. So what I have found is that the Nano's are pretty much the same and the Itouch along with the Iphone need a separate tune. I used a friends Iphone to test also.

I will have to check my Itouch for the "Sound Check" option