New free pre and notch filter day!

[SamanthaCay]

So Friday I went over to a friends place to hang out and help him fix some things around his studio and he gave me these two things.



Anybody know anything about these? Also do any of you have any good examples of a notch filter being used on bass?

[bongomania]

Intersound was a cool company in its day; they made a groovy rackmount bass preamp and a rack parametric EQ. Not up to modern size and noise standards maybe, but cool and good-sounding. As far as notch filter examples, some notchers are just a variable mid-scoop EQ like Nathan East or many slap/pop guys use; some others have a narrower, deeper cut that's used for removing frequencies that are booming or causing feedback.

[ga_edwards]

I could see the notch filter coming in very useful if you have an amp like the LMII with fixed frequency eq controls.
(The Nathan East NE-1 came to my mind too).