colonelmot

G Pultec Hi Cut come Mid Cut
« on: September 16, 2008, 07:27:08 AM »
Hey People

I'm about to make a pair gyraf pultecs. I don't feel I need the hi cut band as much I need a mid cut
Could I just change the cap values on the the hi cut to achieve this?
The frequencies I 'd want to put in would be something like 280, 400, 500 , 650 , 800, 1k

Could this cause other problems to the circuit or is there anything I need to consider
for example Is the hi cut shelving or peak?

Thanks

Tom


okgb

G Pultec Hi Cut come Mid Cut
« Reply #1 on: September 16, 2008, 08:53:22 AM »
The mid cut on the MEQ uses an inductor , but you could graft that ,
 i'm planning on adding the Hi boost section of the PEQ to an Meq
[ same sort of logic as you  ] the " parametrics " certainly have quite a
 few sections  so i think it is doable [ Dave Hill had told me something
about being able to multiple bands together before needing a buffer
and then something about impedances  but i forget that
GKB Audio / Greg Boboski

CJ

G Pultec Hi Cut come Mid Cut
« Reply #2 on: September 23, 2008, 07:37:23 AM »
Is this a MEQ or a EQP you are building?
Thanks.
If I can't fix it, I can fix it so nobody else can!
Frank's Tube Page: www.mif.pg.gda.pl/homepages/frank/vs.html
Guitar Amps: http://bmamps.com/Tech_sch.html

okgb

G Pultec Hi Cut come Mid Cut
« Reply #3 on: September 23, 2008, 09:09:31 AM »
Incase i confused the issue , i was thinking he meant  eqp ,
but  i was suggesting to look to the meq for the mid cut ,
as a more effective way to get it
 [ wouldn't happen without the inductors ]
GKB Audio / Greg Boboski

colonelmot

G Pultec Hi Cut come Mid Cut
« Reply #4 on: September 25, 2008, 01:18:25 AM »
Yeah I'm building Gyrafs EqP - was hoping to mod in a mid cut
Has anyway succesfully added CJ's cut modification as shown in another pultec thread?


 

Related Topics

  Subject / Started by Replies Last post
1 Replies
1901 Views
Last post February 28, 2009, 01:56:44 PM
by NewYorkDave
2 Replies
2316 Views
Last post July 29, 2009, 04:32:09 AM
by hotbaby
3 Replies
1330 Views
Last post July 05, 2010, 02:35:41 AM
by strangeandbouncy
1 Replies
1122 Views
Last post March 11, 2012, 06:16:56 PM
by CJ