I have the ESL-63, so I can't comment on the sound of the 989 specifically, except to say that Drbond's description of the 989 sound applies as well to the ESL-63.
Now, as for the socks: The socks are there for aesthetic reasons, however the metal grille underneath is for personal safety. Behind the metal grille, there is a thin plastic membrane - a dustcover - which is there for the longevity of the panels. Some people claim a sonic benefit from removing combinations of all three (sock, metal grille, dustcover. Removing the dustcover may or may not be harmful to your speakers, depending on the dust and humidity of the environment. I personally would never take the metal grille off.
I believe I have found 'my' speakers in the ESL-63, and I can't or rather don't want to spend the $$$ on the potentially better 989s - at least not until the next bout of audiphile nevrosis hits me.
Take care,
- Harald
Now, as for the socks: The socks are there for aesthetic reasons, however the metal grille underneath is for personal safety. Behind the metal grille, there is a thin plastic membrane - a dustcover - which is there for the longevity of the panels. Some people claim a sonic benefit from removing combinations of all three (sock, metal grille, dustcover. Removing the dustcover may or may not be harmful to your speakers, depending on the dust and humidity of the environment. I personally would never take the metal grille off.
I believe I have found 'my' speakers in the ESL-63, and I can't or rather don't want to spend the $$$ on the potentially better 989s - at least not until the next bout of audiphile nevrosis hits me.
Take care,
- Harald