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Manley Massive Passive schematics Multi-Ef­fects Plugins
Old 1st April 2010
  #1
Manley Massive Passive schematics

Does anybody know or Can provide schematics for Manley passive Eq

I m interested in those Filter blocks

does anybody have an idea how to make similar filters? thanks
Old 1st April 2010
  #2
Gear Nut
 
duffy878's Avatar
 

You might want to post in the geekslutz forum rather than the mastering forum....
Old 1st April 2010
  #3
Old 1st April 2010
  #4
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dcollins's Avatar
Quote:
Originally Posted by manman View Post
Does anybody know or Can provide schematics for Manley passive Eq

I m interested in those Filter blocks

does anybody have an idea how to make similar filters? thanks
www.national.com/an/AN/AN-779.pdf

Amazon.com: The Art of Electronics (9780521370950): Paul Horowitz, Winfield Hill: Books


DC
Old 1st April 2010
  #5
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Paul Gold's Avatar
I don't know how they're done in the MP. One would assume passive but you never know. This is also an excellent read for active filters.

Amazon.com: Active Filter Cookbook, Second Edition (9780750629867): DON LANCASTER: Books
Old 1st April 2010
  #6
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dcollins's Avatar
Quote:
Originally Posted by Paul Gold View Post
I don't know how they're done in the MP. One would assume passive but you never know. This is also an excellent read for active filters.

Amazon.com: Active Filter Cookbook, Second Edition (9780750629867): DON LANCASTER: Books
They are passive multi-pole RLC filters.


DC
Old 1st April 2010
  #7
Moderator
 
EveAnna Manley's Avatar
 

"Reading is hard."
Old 1st April 2010
  #8
Lives for gear
 
Paul Gold's Avatar
I bought a giant pile of inductors from a GS member. They are Nytronics VIV-value. Ever heard of them or heard them?

I got big plans for them but it's about a year away. I've never played with L's before.
Old 2nd April 2010
  #9
Quote:
They are passive multi-pole RLC filters.
Okay thats understandable, but

how do you change Q on passive filters??
Old 2nd April 2010
  #10
Gear Addict
 
mastertone's Avatar
Quote:
Originally Posted by manman View Post
Okay thats understandable, but

how do you change Q on passive filters??
With Resistance
Equalizer (passive).
Old 2nd April 2010
  #11
Gear Nut
 
IxtabStudios's Avatar
 

Quote:
Originally Posted by mastertone View Post
With Resistance
Kind of.

From your link.

"The shape of an LC filter is determined by the Q of the circuit, witch depends on the amount of resistance in the inductor winding. "
Old 2nd April 2010
  #12


So in passive massive it changes by potentiometer? if you look at filter card it does look like potentiometer.

The switch is the filter selection.

I m curious how they did the Q change with potentiometer WITHOUT touching the inductor.

So HOW should you TUNE INDUCTOR with HIGH Q ?
Old 2nd April 2010
  #13
Moderator
 
EveAnna Manley's Avatar
 

The filters in the Massive Passive are L-C networks. Each filter is selected switched by a switch. There is no adjustable Q on the filters. There is no potentiometer on the filters.

L = Choke
C = Capacitor
Old 2nd April 2010
  #14
Thanks EveAnna

The high pass and low pass filters are true passive.

But 4 band filter cards. there is Q and it looks like potentiometer.
Old 2nd April 2010
  #15
Moderator
 
EveAnna Manley's Avatar
 

In addition to the passive High Pass and Low Pass filters, there are four EQ bands offering boost and cut and shelf and bell modes with adjustable Q. The Q is adjusted with a potentiometer. The Boost and Cut amount is adjusted with a potentiometer. The frequency adjustment is selected with a switch.

Manman, go read some of the links and books the fellas provided for you. You will learn more about EQ's and filters if you start to read and learn.
Old 3rd April 2010
  #16
Alright that what i wanted to know thanks!!!
Old 12th April 2010
  #17
Here for the gear
 

hi there! those someone know if we can link de Left & Right side on this baby? when needed using the mastering EQ like a regular EQ... thx
Old 12th April 2010
  #18
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dcollins's Avatar
Quote:
Originally Posted by 4mik View Post
hi there! those someone know if we can link de Left & Right side on this baby? when needed using the mastering EQ like a regular EQ... thx
By using both hands.


DC
Old 12th April 2010
  #19
Here for the gear
 

i did not know that DC... hey, i have 2 hands!! wow! thx for the tips i guest now i can drive my car without having a accident.. LOL
Old 12th April 2010
  #20
Moderator
 
Tim Farrant's Avatar
 

It is possible to change the Q of a LC parallel network in a EQ stage without changing the frequency as the same time, however, it does need an amplifier. This topology is used in our REQ equaliser. Took me a while to work out how so I can't spill the beans until I die, but it is possible.
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