Different source, different output?

[dawgs007]

I was playing around with test tones while tuning my sub amp, and I just noticed that while playing the tones, my computer had a lot louder and more clear output than my iPhone. Why is that? 45hz seemed much much louder on the computer. Volume all the way up on both.

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[CSCStang]

I was playing around with test tones while tuning my sub amp, and I just noticed that while playing the tones, my computer had a lot louder and more clear output than my iPhone. Why is that? 45hz seemed much much louder on the computer. Volume all the way up on both.

Were you playing it through the sub or your phone/laptop?

 

[dawgs007]

I was using my phone and then laptop as sources for the tone via AUX. The computer appeared much louder and clearer.

 

[Jeffdachef 5,000+ posts]

processiing on a small tiny iphone chip vs a computer's sound card.... There's no competition there on which one is a louder clearer and stronger signal. A USB will beat both of them in signal strength, so will a store bought CD. Aux and bluetooth are the worst sources.

 

[dawgs007]

Really? So putting those tones on a USB drive and playing them that way will be clearer than iPhone?

 

[CSCStang]

Really? So putting those tones on a USB drive and playing them that way will be clearer than iPhone?

Yes. If your hu has a usb, plug it right in or get a cd.

 

[Jeffdachef 5,000+ posts]

Really? So putting those tones on a USB drive and playing them that way will be clearer than iPhone?

Yes because it becomes a digital signal processed straight from the head unit DAC itself rather then processed by the iphone's DAC then going to be reprocessed again by the headunit, usually ruins the sound quality by quite a bit. Unless you have some digital iphone usb connector that bypasses the iphone's processing, but then again, thats the same as running a USB.

head unit > iphone in sound processing