Recent content by Iceman2k

Greenhorn: You probably didn't get them inserted properly. If the tip is jammed up against the earcanal wall they will not work correctly. Try moistening the tip (yeah, a little spit) before putting them in, they will slide in easier and be more comfortable. The science only works if they are...

IEM A = 123 dB/V IEM B = 110 dB/V

Occlusion effect will happen because the earmold is too short. It needs to be deep enough to pass up the bony structure of the earcanal. The low frequencies of your voice are transmitted right into your sealed earcanal via the your skull. If the earmold passes up the bony part and extends deep...

The first ER-4 was $285, but if I remember correctly, when introduced the ER-4B and ER-4S went to $330. I'll have to double check the old data sheets to verify the dates when the price changed.

I have the first ER-4 prototype (circa 1991), count me in?

I think you could differentiate between custom IEMs for musicians that were around in the later 80's and the first high-fidelity commercial IEMs, which were the ER-4. The ER-4 was first sold in 1991, which in 1992 was renamed the ER-4B (B for Binaural). A listening test performed at an AES...