iPod interface - learned something new today

[scw1991]

I have a 2007 4Runner Limited with the JBL Synthesis 10 speaker audio system (no navigation). I've been connecting my iPod to the stereo using the factory installed 3.5mm auxiliary jack located in the center console. I've never been very impressed with the sound quality.

So, today I stroll into Abt Electronics here in Chicago and I'm looking at installing aftermarket speakers. I tell the sales agent James that I'm just not impressed with the sound quality and he asks me how I'm connecting my iPod to the stereo. I tell him the iPod is connected using the 3.5mm jack. He said that's half my problem. He elaborates and tells me that I need to utilize the 30-pin connector on the iPod connected to a separate interface device routed to the stereo. He also tells me that in order to achieve the best sound quality from my iPod, I need to be importing CD's into the iTunes library using Lossless format (ALAC) by changing my import preferences. The downside is that each music file size is about 4x as large as the default format (AAC).

After I leave the store, I select a song from my iPod and listen to it through the 3.5mm jack. Then I pop in a CD and listen to the same song. Wow....never knew there could be such a dramatic and improved difference in sound quality. Learn something new every day

Any suggestions as to what's the best iPod interface device on the market for use with the JBL Synthesis head unit P1803 (Toyota p/n 86120-5340). Crutchfield has the USA Spec 581PA15-TOY which I think will work and I'm waiting for a reply email from them to confirm.

 

[Stellar]

I also learned the same lesson a couple years ago. Installed a Pioneer screen in my T4R (also with the JBL sound) and the guy at the stereo shop was full of info. He explained that Apple uses a cheap 3.5mm jack on the iPhone and that is the cause for the poor quality sound. My new head unit has both a USB and aux port. He had me test each out with my iPhone and the sound difference is amazing!

 

[Stellar]

Also forgot to add.... the USB port not only offers better sound quality, but it charges your device simultaneously. Very convenient.

 

[CXS]

USA Spec 581PA15-TOY

That sounds like the one I mounted in my truck when I bought it and my iPod has been connected to it ever since. It's a good unit, no issues at all, good quality even though I use ACC format.

 

[Cornelius]

I totally agree with needing to use the 30-pin over the headphone jack -- big difference in sound quality. I've been considering changing out my factory head unit JUST for the ability to dock my iPod instead of use the 3.5mm jack with a tape adapter (**shudders**).

However, I disagree with importing in a lossless format. That's just a waste. While Apple's AAC is considered a "lossy" compression, it's actually very good at only "throwing away" the bits of information that don't substantially affect audio quality.

In my humble audiophile opinion, you likely will not be able to tell the difference between your CD and an iTunes song imported at 256kbps on your car stereo. With the right set of high-end headphones and a good ear - maybe. But through the factory JBL system - I highly doubt it.

My 2 cents: Import at either 256kbps VBR (Variable BitRate) or even 320kbps VBR (which I import at these days) and you'll be very happy, without wasting tons and tons of disk space.

Good luck!

 

[scw1991]

I ordered the USA Spec PA15-TOY yesterday after Crutchfield confirmed it was the right one for my OEM head unit. Should be a fairly easy install and am looking forward to seeing how much of a difference there will be in sound quality.

Cornelius,
Thank you for your input, much appreciated. I've got about 5000 songs on my iPod Classic and I after giving it some further thought, I agree 100% with you that the standard 256kbps AAC is sufficient.