Cell Phone Connection to Car Speakers - Mercedes-Benz Forum

LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 05-02-2005, 07:55 AM Thread Starter
BenzWorld Member
harb's Avatar
Date registered: Nov 2004
Vehicle: 2000 E320
Location: Cedar Park, Texas, U.S.A.
Posts: 183
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
(Thread Starter)
Cell Phone Connection to Car Speakers

I have a new idea to connect any cell phone to the car speaker system as a cheap alternative to the integrated phone set-up. Of course, there are some disadvantages such as voice quality, full feature set, etc. But my main objective is to get the sound through the car speakers.

The idea is to use an FM modulator that takes in an audio input signal from the cell phone and converts it to an FM frequency (RF) to be received by the radio head unit receiver and play back through the speakers. For this, I bought an FM Modulator from Costco for $25. The FM Modulator comes with an audio cable designed to take audio input signals from devices such as a laptop computer, an iPod, a portable DVD player, etc. Basically any device with an audio out port.

The question that I have is how would I take an audio signal out of the cell phone and feed into the FM modulator? One of the ideas I had here is to take the existing wired headset of the phone, cut the end that normally goes to the ear and convert it to a 3.5mm audio cable that can feed the FM modulator. Other ideas here are welcome.

Another question I have is, assuming that I can feed the audio signal to the FM modulator form the Cell Phone, would the transmission and reception of the voice interfere? In other words, would the caller hear their speech?

In Summary, I am trying to take advantage of the FM Modulator technology to connect a cell phone to the car speakers. Any feedback here is welcome and appreciated.

Tony Harb
2000 E320
1990 300E
1986 380SE
1982 280SE
1977 280S
harb is offline  
Sponsored Links

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W210 E-Class

Quick Reply

Register Now

In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Title goes here

video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome