Passive EQ question

[greiswig]

I'm learning to like the passive EQ in the amp block more. It's not a make or break thing but very helpful.

But I'm trying to figure out how it works. If it is modeled off a Pultec EQP-1A, there may be some parameters that are missing, or that I'm not understanding. That unit has boost and attenuate both on the same fixed-band switch, but they affected slightly different frequencies. So you could tailor a knee to hit just the right spot.

Has Cliff said anything about what passive EQ unit this is modeled from?

 

[javajunkie]

It is not modelled off a specific eq, but a passive design.

 

[Jbmetal]

He said it's based off of the design of the Manley Massive Passive.

 

[javajunkie]

He said it's based off of the design of the Manley Massive Passive.

From Cliff:

"It's not a clone of the Manley but rather new filter types based on those old analog circuits. You get that same overshoot characteristic as the Manley/Neve/Pultec etc. Very musical."
​

When he says those, he means Manley,Neve,Pultec. In other words, just a passive circuit design.

 

[Jbmetal]

Yeah, I know it wasn't meant to be an exact model, but just drawing from the technology in the Manley, as well as others. Thanks for the clarification though.