Connecting phone to a car stereo

[carlreader]

Hi all

I have a MDA compact which I wish to connect to my car stereo as a handsfree unit. I have an auxiliary input for my stereo.

Is it possible just to purchase a 2.5 to 3.5mm lead for this? I have a gut feeling the mic won't work - please help? Is it possible to buy such a lead with a built in mic?

Thanks

Carl

[monster]

Hi, I used to have a XDAII which I connected to the auxillary port on my car stereo, just like you suggest. It worked perfectly. When using the phone, the caller's voice woudl come out of the car speakers and the mic was powerful enough to pick up my voice even though the unit was mounted on my windscreen.

Unfortuntely, both the Wizard and the Exec automatically disable the mic when you plug into the headphone socket. Not sure about the MDA comact. Sorry couldn't offer more advice on your particular device, but I hope my experiences help.

[jackleung]

Unfortuntely, both the Wizard and the Exec automatically disable the mic when you plug into the headphone socket. Not sure about the MDA comact.
I do have the same setup. I can confirm U the mic still work after U plug in the adapter but I normally use a BT headset when I am in the car.

[carlreader]

OK, so I assume that if I purchase a 2.5mm to 3.5mm lead, the mic should work?

[jackleung]

OK, so I assume that if I purchase a 2.5mm to 3.5mm lead, the mic should work?
Yes. 8)

[carlreader]

OK - did some work on this.

I decided to cut the earplugs off of the supplied headset, and attach a 3.5mm socket.

I now have a custom XDA mini lead :)

All works, however volume from car stereo speakers is extremely low. Any ideas? (Yes, I have checked car volume, phone volume and headphone volume!)

Cheers

Carl

[monster]

Unfortuntely, both the Wizard and the Exec automatically disable the mic when you plug into the headphone socket. Not sure about the MDA comact.
I do have the same setup. I can confirm U the mic still work after U plug in the adapter but I normally use a BT headset when I am in the car.

Hi Jackleung, my mic is being diabled, and i am beginning to think that I may not have the right connector. I have a standard 3.5mm connecting the exec. Can you let me know how you have wired your device with the type of connector? You may be able to solve a longstanding problem of mine.
Thanks in advance.

[carlreader]

I found my mic was cancelled with the Mini, hence the custom cable.

hope this helps!

[jackleung]

Hi Jackleung, my mic is being diabled, and i am beginning to think that I may not have the right connector. I have a standard 3.5mm connecting the exec. Can you let me know how you have wired your device with the type of connector? You may be able to solve a longstanding problem of mine.
Thanks in advance.

I think my adapter is just a standard 2.5mm to 3.5mm converter. I tried 2 different adapter (one from Radio shack and the other one from ebay: http://cgi.ebay.com/USB-CABLE-headphone-converter-O2-XDA-II-mini-i-Mate-JAM_W0QQitemZ5841801318QQcategoryZ15040QQssPageNam eZWD1VQQrdZ1QQcmdZViewItem)

Both are working for me (I will try again today and confirm U tomorrow), therefore I think yr problem is in the exec hardware itself.

To Carl,
Yr setup will not work since yr supplied headset adapter has at least 4 connection on the plug compare to 3 on the standard one. The extra connection is for the mic. If U cut the wire like this:

<---- X --- mic+volumn control ------ ear plugs

Then U can no longer use the mic w/ the custom wire. But if U:

<------- mic+volumn control -- X ---- ear plugs

then the mic on yr mic+volumn control will pick up the voice

[carlreader]

hi jackleung

Thanks for the reply - the lead was cut after the mic but before the earphones.

This was because a standard lead with a 2.5 / 3.5mm adaptor didnt work.

My only issue now is the low volume!

Cheers

Carl

[jackleung]

I tried it on my Imate Jam again. My mic on the Jam still works (eg: Voice Command via Cyberon Voice Dial. So do phone conversation) even I use my 2.5mm/3.5mm adapter to connection it to my car stereo.

[Skillie]

Hi,
I did the same for me and a friend of mine with a Univer..er - Jasjar and connected this to an FM transmitter - We have excellent sound quality, volume and the you can still answer calls by pressing the Mic Button

Frikkie
(If you are gonna be late - dont rush, else someone else and YOU will be cross)

[archoo]

I have done exactly what you did, put a 3.5mm socket on the end of the included handsfree cable.. volume is fine, and i regularly connect it to the aux in the car, and multiple sets of headphone/speakers...

The best suggestion to your volume problem is to try again.. i know i had issue with the stereo channels getting screwed up (and even combined at one point) and it was just trial and error getting the connections clean..

You have to ensure that both the shaft and tip connectors on the socket are grounded to the shared ground on the circuit board.. otherwise the audio will probably be less than perfect.. check for dodgy soldering/connection.. coz i can assure you that your theory does work!

Dan

[kelu]

There is another topic on this here (http://forum.xda-developers.com/viewtopic.php?t=34660).
The person from there uses:
http://www.expansys-usa.com/product.asp?code=PPCPADPT02
which has two 3.5mm plugs.
Description: It has a 2.5mm plug at one end (this plugs into the PocketPC) and two 3.5mm sockets at the other end (into which you plug your 3.5mm headset or headphones).

My question was: could I put a standard 3.5 car kit mic into this 3.5 headset jack (the one with the mic)? Would the mic work if I plug it into a headset jack?
I assume the other one (headphones = stereo only) I will plug it directly into my car auxiliary via a 3.5mm to RCA cable, right?