dual i/r’s with dual flipdowns

Printed From: the12volt.com
Forum Name: Mobile Video, GPS, and Navigation
Forum Discription: Mobile Video Head Units, DVD Players, LCD and TFT Monitors, Navigation, GPS, PS2, PS3, XBox, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=115879
Printed Date: May 02, 2024 at 6:24 AM

Topic: dual i/r’s with dual flipdowns

Posted By: mo12v
Subject: dual i/r’s with dual flipdowns
Date Posted: August 24, 2009 at 5:37 PM

Have same Brand & Model 10.4 Flip Downs with built in DVD's in 2009 Ford Expedition.
Front Flip Down interferes with Rear Flip Down on I/R Heaphones.
Causes a bad "squeal".
Turn off Rear Flip Down Noise goes away & can listen to Front Flip Down.
Turn Off Front Flip Down & turn On Rear Flip Down, Noise goes away & can listen to Rear Flip Down.
Question is:
How to block or be able to operate Front & Rear at the Same time using I/R Headphones??

Any HELP is greatly appreciated..........

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MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.

Replies:

Posted By: i am an idiot
Date Posted: August 24, 2009 at 6:32 PM

If the IR is not defeatable via the menu, and there is a particular unit you want to work, we disassemble the unit and either remove the ILEDs or cut a trace on the circuit board that feeds them.

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Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB

Posted By: Ween
Date Posted: August 24, 2009 at 8:01 PM

hi,

or see if transmitting frequency of i/r emitters is switchable/selectable. myron and davis used to have i/r emitters (for their headrest units) that were on a small circuit board...and available on channel a or b. then you'd use dual source headphones. or disable both sets and use a separate dual channel emitter setup.

Posted By: mo12v
Date Posted: August 25, 2009 at 5:27 PM

Thank you for the info.........really appreciate it

Want to keep the Front Unit I/R & was going to try a different I/R Channel for the Rear, but have been told that I/R will still cause problems with signals.
So, have ordered RF type Transmitter & Headphones to connect to the Outputs of Rear Unit.
Believe it or not, the Manufacturer tells me to "break" the I/R bulbs in Rear Unit...!!!!
Will try to cut wires or scratch PCB I/R Rear Unit & use RF for Rear.........
Sounded so simple, but has turned into a bummer

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MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.

Posted By: i am an idiot
Date Posted: August 25, 2009 at 8:38 PM

If you break the LEDs, that is pretty much unreversible. Cutting the trace will be a much better option for you.

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Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB

Posted By: Mike M2
Date Posted: August 27, 2009 at 6:20 AM

We simply put tape over the IR's inside the plastic cover. You can't see it and is totally reversable....

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Mike M2
Tech Manager
CS Dealer Services

Posted By: chrisl6211
Date Posted: September 01, 2009 at 3:35 PM

Blackmore Mobile used to offer a daul channel IR transmitter exactly for that problem. Their overheads also all had dual channel selectable outputs as well. Haven't used them in a while but might be worth a call.