hmm...is very easy to discribe... you watch fast and furious?? the orange supra... when racing with black mustang almost ending of the movie....thats the sound like.....
If you are in 0.7 bar and above, you will get a very loud and clear sound of it...normally people wouldnt get this coz the price of it is more expensive than SARD "duck mouth" type...
It been sometimes am missing from ZTH. I need to find aircond cleaner to clean my cooling coil. Yesterday open the cooling coil box and notice no filter attach. Damm.. I tought it should be standard issue...