El_JimBob Posted August 28, 2008 Share Posted August 28, 2008 (edited) Hi - i'm quite interested in the new EQ Drive, but i'd like a little more info on the EQ section's frequency bands if possible.... Cheers. Jim *apologies if this has been asked already* Edited August 28, 2008 by El_JimBob Quote Link to comment Share on other sites More sharing options...
DHA Posted September 1, 2008 Share Posted September 1, 2008 [quote name='El_JimBob' post='271722' date='Aug 28 2008, 12:56 PM']Hi - i'm quite interested in the new EQ Drive, but i'd like a little more info on the EQ section's frequency bands if possible.... Cheers. Jim *apologies if this has been asked already*[/quote] Hi, I use a 3-band active Baxandall design and adjust the mid frequency bands Q point. The bass frequency mid point is around 30Hz, Mid 1kHz and treble 10kHz. But there is a +- 200-300Hz on the mid with the Q control which is hard to calculate as the Baxandall equations really only work with a 2 band design. There is a cut and boost of 20dB at each band Dave Quote Link to comment Share on other sites More sharing options...
El_JimBob Posted September 1, 2008 Author Share Posted September 1, 2008 (edited) Care to explain a Baxandall eq design? I feel like such a tool cheers for the reply.... *edit* ok, i've had a bit of a read up so lets see if i can grasp this - would i be right in saying that the frequency bands in this type of eq interact with each other differently dependant on how much they are cut or boosted ie: make the mid-points appear to move/shift? and can i presume that 'noon' on each band would constitute a 'flat' eq? or am i talking out of my hole? Edited September 1, 2008 by El_JimBob Quote Link to comment Share on other sites More sharing options...
DHA Posted September 2, 2008 Share Posted September 2, 2008 [quote name='El_JimBob' post='275058' date='Sep 1 2008, 11:03 PM']Care to explain a Baxandall eq design? I feel like such a tool cheers for the reply.... *edit* ok, i've had a bit of a read up so lets see if i can grasp this - would i be right in saying that the frequency bands in this type of eq interact with each other differently dependant on how much they are cut or boosted ie: make the mid-points appear to move/shift? and can i presume that 'noon' on each band would constitute a 'flat' eq? or am i talking out of my hole? [/quote] Yes, there is a small interaction between the mid and bass, treble. But there is no interaction between bass and treble that's why the equations don't work for a 3 band Baxandall design. A quick Google on Baxandall might help but it's the most used design for active EQ. When the treble, mid and bass pots are at noon there is a totally flat frequency response. This is why the Baxandall design is so good as other designs just take frequencies away and there is no flat response. Dave Quote Link to comment Share on other sites More sharing options...
El_JimBob Posted September 3, 2008 Author Share Posted September 3, 2008 Thanks Dave - i appreciate your prompt reply and your wealth of knowledge! Quote Link to comment Share on other sites More sharing options...
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