[N Fotouhi]

I am thinking about buying a high-end transportable in-car communicator to use in the race car because chatterbox is useless in the race care.

I have found AVComm (http://www.avcomm.com/index.php?route=common/home) which sells both aviation and racing intercoms. I am interested to buy an aviation one (http://www.avcomm.com/index.php?rout...&product_id=56) instead of the racing one ( http://www.avcomm.com/index.php?rout...product_id=143) because it seems to be about half the price. I think the IMSA (?) looking wire shown on the intercom pictures would plug into my helmet pre-wire, but I need a helmet kit for someone that may not have a pre-wired helmet.

I do not know anything about electronics, but it looks like the aviation one might work with a racing helmet kit. Can anyone look at these and let me know if these work? I am willing to buy any additional adaptor or wiring.

[Ryan]

guy on rennlist selling one...

http://rennlist.com/forums/racing-an...municator.html

[Der ABT]

Man thats a hefty pricetag on rennlist....looks nice though

If that avionics one works could be the new stndrd

Less you go bluetooth like this and just buy 2...sena 3s

http://www.revzilla.com/motorcycle/s...red-microphone

[tamathumper]

My wife and I use the Sena SMH10's when snowmobiling. They work great for music, intercom, and turn-by-turn satnav on the trails.

[RV4Flyer]

The aviation version is designed to be an intercom that plugs into the aircrafts audio panel so up to four people in the plane can converse. Older planes did not have headset jacks for headsets so that is where they are used. The car version does not plug into the autos audio system. There is also likely a difference in impedance so be sure that they match up to the built in headset in your helmet. The aviation intercom is mono or stereo, is that needed for in the car? The aviation version also does double duty where it is an intercom and a transmitting switch where you can push the PTT button to transmit over the radio. I don't think you need that in a car if you are only communicating with you passenger/driver. Aviation headsets also have two plugs, one for listening and the other for talking, I'm pretty sure there is only one plug for your helmets headset.

I know a lot of pilots and none use Avcomm headsets. An occasional one might be found on a student pilot watching their budget or perhaps a second headset for a passenger. My passengers get a top of the line Bose headset.

[N Fotouhi]

Thanks Mike. If I understand you correctly, impedance is the only thing that I have to worry about using the aviation version with the helmet headset as the other things you mention would not affect the use. To be sure, I am looking for something that allows communication in our noisy race car, as I have the Chatterbox for instructing. I have not been able to get an answer at AVComm or find a place that sells the racing version to get a price. I suspect what Scott is selling on RL is about the right price for a used one.

It looks like with Sena, I have to add another headset/mike. My helmet is pre-wired and I just cannot get another thing in there.

[Dr K]

Originally Posted by N Fotouhi

My helmet is pre-wired and I just cannot get another thing in there.

Must...resist...comment...!

[smdubovsky]

95% of audio quality is the mic and speakers - not the box they are plugging into. 1/4" phono plugs used by nascar and imsa are very reliable (and will pull out if you jump out of the car in an emergency.)

[}{arlequin]

...???

[N Fotouhi]

Originally Posted by }{arlequin

...???

I am not this polish engineering solution is less expensive than what I purchased, especially when in comes to modify a coach's helmet.

I ended up buying something designed for off-road racing plus an extra IMSA style helmet mic and separate ear buds just in case someone without an IMSA helmet kit is brae enough to get in the car with us. We'll see how it works.