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The Wired CR-V Audio, navigation, security, video, custom lighting, and all other 12-volt concerns

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  #1  
Old 05-27-2007, 12:01 PM
kiza40 kiza40 is offline
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Default Kenwood double din in 2003 CR-V problems

I have recently replaced OEM unit with Kenwood DDX 6029 (ddx 6019 in usa). The sound quality is awful. Sound is not clear as it was with original Pioneer unit and it sounds muffled. Kenwood is connected via Honda-iso wire converter. Searching this site about this problem brought to my attention possibility of reversed polarity speaker wires. That could be the reason for poor sound quality.
Have all Gen 2 CR-Vs reversed polarity speaker wires?
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Old 05-29-2007, 10:47 AM
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OEM should have been Panasonic, not Pioneer.

Did you match the wires by colors or by the wiring diagram?
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Old 05-29-2007, 11:34 AM
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There's a quick way to determine the polarity of the Honda's speakers. Use a 9 volt battery and touch it to the wires. If you hook the + wire to the PLUS on the battery, it should make the cones thump inward, toward the listener(s).

Gen 1 CR-V and Gen 1 Odyssey are wired backwards, and the color codes that Honda used aren't what I'd call 'normal'.

Search for the word 'polarity' for more discussion.
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Old 05-29-2007, 04:21 PM
kiza40 kiza40 is offline
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Thanks for your replays. I live in England and it's English Gen2 with Pioneer DEH M6017 unit. I know how to check speakers polarity if they were removed, but it involves so much dismantling that I am trying to avoid! Kenwood is connected with wire harness to convert from original Honda system to ISO on Kenwood.

Last edited by kiza40; 05-29-2007 at 04:26 PM.
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Old 06-02-2007, 10:37 PM
robo_geek robo_geek is offline
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Quote:
Originally Posted by kiza40 View Post
Thanks for your replays. I live in England and it's English Gen2 with Pioneer DEH M6017 unit. I know how to check speakers polarity if they were removed, but it involves so much dismantling that I am trying to avoid! Kenwood is connected with wire harness to convert from original Honda system to ISO on Kenwood.
Don't forget, that if it sounds muddy, you only need to fix the polarity on one side. Also, perhaps the installer damaged a speaker during install.

Remember that if the polarity is the same on both sides, then the sound waves come out 'in phase' which sounds normal. If the polarity is wrong on one side, then they will be out-of-phase, where the left speaker is sucking all the music out of the right speaker (so to speak).

I don't see how it matters if 'all the speaker polarity were reversed' since the phase-cancellation problem is due to the left channel versus the right channel (or front to rear). Four 'reverse polarity' speakers are in-phase with each other, just as four normal polarity speakers would be.

Don't get the polarity wrong on your dual-voice coil sub......
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Old 06-04-2007, 01:43 PM
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Quote:
Originally Posted by 'Curly Q Links' View Post
There's a quick way to determine the polarity of the Honda's speakers. Use a 9 volt battery and touch it to the wires. If you hook the + wire to the PLUS on the battery, it should make the cones thump inward, toward the listener(s).

Gen 1 CR-V and Gen 1 Odyssey are wired backwards, and the color codes that Honda used aren't what I'd call 'normal'.

Search for the word 'polarity' for more discussion.
While that is all true, the easiest way (if you have a good sense of sound) can be to play a pure bass note and fade to the front speakers (or the speakers in question) and listen for bass. If you are unsure, flip ONE SIDE and if the bass gets louder, it is in phase now, if it gets quieter it was in phase, switch it back.

Now to get totally geeky on you. If you are using electronic crossovers on the deck (or amp) and you select a slope of 6, 18, 30 (something other than 12 or 24), then you are probably 90 degrees out of phase and there isn't much you can do about that but select a nicer slope.
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Old 06-04-2007, 05:36 PM
k24 rd6 k24 rd6 is offline
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It is 90 degrees for every 6db, 6=90,12=180,18=180.
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Old 06-04-2007, 10:41 PM
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Originally Posted by k24 rd6 View Post
It is 90 degrees for every 6db, 6=90,12=180,18=180.
Right....

BTW 18dB=270
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Old 06-05-2007, 10:01 AM
k24 rd6 k24 rd6 is offline
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Right....

BTW 18dB=270
I need to slow down and check what I type
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Old 12-04-2008, 03:28 PM
swcas2 swcas2 is offline
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Putting a Kenwood DNX 5220 in a 2006 CRV and notice the bezel is slightly too big to make the unit sit in the dash fascia.What did you use to finish off yours please. Any companies out there making double din trim rings thinner than the Kenwood. Any ideas gratefully accepted.
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