JVC KW-AVX840 7" Double-DIN Multimedia Receiver Review

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(More customer reviews)This is my e-mail to JVC after two weeks with this unit.
Dear JVC:
I want to report to you that all the debugging and testing that you did NOT do on the JVC KW-AVX840
Really irritated me and cost me a lot of personal time the past two weeks. You probably have a dozen or so e-mails from my iPhone, plus half a dozen phone calls trying to get a straight answer on how to use motionX with this receiver. The closest thing I got to an answer was oh gee "you plug it in and it works". Well I can safely tell you after many hours of e-mails to you, and MotionX. Phone calls to JVC, tearing my car apart for a week, and finally purchasing a new unit thinking mine was defective, that this does not work. Forgive me for expecting you to actually test the interface on all the products you are advertising. Especially the top end model from JVC. Honestly it would not bother me nearly as much if this was not the main feature I see advertised on web sites. Even the local store I bought my 2nd 840 at said he did not know how it worked, and of course there is no mention of this in the manual. No one at your customer service center knows how to work this unit. And the phone calls I have been promised from supervisors have not happened.
Here is another thing that Does Not Work. The Sub-woofer output. Does not put a signal out.
Nice haves would be.
Do something to show off the nice screen. Big beautiful screen why can't I watch the EQ bounce? It goes to sleep mode. Thats the big feature, all the information disappears after ten seconds. Hmm not sure I get that decision.
Why does it have a NAVI setting. You don't offer a navi add on. Is his where motion X is supposed to show up? It doesn't. It only shows up In AV and that is without sound.
I have heard that you cannot use USB in dual mode. This is not a feature I care about, ( no back seat) but in my long search for answers this seemed to be an issue for others.
The clock does not seem to auto set via radio with HD plugged in.
Now in the intetest of being fair, here are some things That work good.
Blue tooth integration. Wow awesome interface, including phone book. I wish it would show multiple numbers for people, or at least give multiple entries for them, but overall nice job.
Ipod integration is great! Works really good.
Touch screen is very nice and works well.
Radio tunes nicely. Good signal strength.
blutooth player works well with pandora. Although it does not pull in titles etc from my iphone.
The sound is Great! The Eq offers great adjustment features.

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