Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #200 on: December 11, 2009, 09:09:13 PM »
When will it be tested (and hopefully) compared with the original?
Frank

Frank,
Just squirting sine waves in at the mo. Hopefully have some metal around it by the weekend and into the hands of someone who can put it through it's paces.
If you'd like to lend me a 1084, I'll be more than happy to compare.

peter


If i had one, i'd lend it to ya.


Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #201 on: December 11, 2009, 11:07:35 PM »
What frequencies are you using?  Did you add / change any from the original 1084?

Added 20k and 25k to the high band.
Mid band with 9050 inductor is slightly different in the higher two frequencies 7k2/6k9 10k/9k. These could be fiddled with using TK's suggested 9052, or cap swapping.
Low band is standard, as is HPF.
http://www.lazpro.com
I reserve the right to not sell to idiots

Tekay

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #202 on: December 12, 2009, 04:07:58 AM »
Using the vtb9050, the 7k2 will be right with the 2n2 cap, the original 200mH/2n2 gives 7k59, toget that with the vtb9050, change 2n2 to two 1n in parallel. For the 10k position change 1n2 to a 1n in parallel with a 100p.
I started to work on a similare unit two years ago using consentric switches/pot like an API550A, but i have had to much work to do so it may never be finished.
« Last Edit: December 14, 2009, 02:29:27 AM by Tekay »
Thomas "TK" Kristiansson
----------------------------------
"The Sound Is In The Iron"
www.vintagedesign.se  www.tkaudio.se

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #203 on: December 12, 2009, 08:01:42 AM »
TK,
I'm using all taps on the 9050, so my cap choices are slightly different.
http://www.lazpro.com
I reserve the right to not sell to idiots

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #204 on: December 17, 2009, 06:18:49 AM »
Rough front panel design.
Neve extra dark sea grey, with white screening.

http://www.lazpro.com
I reserve the right to not sell to idiots

Nobru

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #205 on: December 17, 2009, 06:54:32 AM »
YYYYEEEEHHHAAAA!!!
Rock on the eighty four!
I want some I want some.
Fitting in regular happy lunch box?
Nice and tight!
b
BOOM DANS LE KLASSIKA

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #206 on: December 17, 2009, 06:59:58 AM »
Fitting in regular happy lunch box?

Oui.
http://www.lazpro.com
I reserve the right to not sell to idiots

analogical

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #207 on: December 17, 2009, 08:57:36 AM »
 /Gasp

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #208 on: December 17, 2009, 09:54:50 AM »
Hi-Q Haiku

When I flick the switch
Frequency band goes narrow
Time to carve sh*t up

Looks great, Peter.

Junction

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #209 on: December 17, 2009, 04:34:53 PM »
The only problem I see here is how many of these babys can I afford to buy!
*Freekin awesome*


strangeandbouncy

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #210 on: December 17, 2009, 05:02:46 PM »
Nice Miko!


   You must be moved . . . . I know I am!


       ;D ;D ;D


            Gotta raise me some readies for these puppies!



                     ANdyP
. . . . RUH ROH . . . . .

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #211 on: December 18, 2009, 06:36:24 AM »
Chortle Miko..  ;D
http://www.lazpro.com
I reserve the right to not sell to idiots

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #212 on: December 18, 2009, 10:36:35 AM »
Avec knobage et sweesh.

http://www.lazpro.com
I reserve the right to not sell to idiots


Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #214 on: December 18, 2009, 01:15:50 PM »
OMG, over?  :o
"Kind of like going into Safeway at 4 in the morning and chugging a beer in the produce section; been there, done that." - CJ

"We're not making an atomic bomb, just cooking a few electrons." - PRR

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #215 on: December 18, 2009, 01:46:30 PM »
everythime I look at this project I'm amazed by the building quality!!

congrads !!!

Peter you rock !!!

tommypiper

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #216 on: December 18, 2009, 02:24:36 PM »
Hi Peter, looks fab.   :)  

I just stumbled on the thread and have been time glancing at previous pages.  Still coupla Q.  Is it 24v?  What's output transistor?  Is it true 1084 283/family amp?  What are the opamp boards i see in there?  

I LOVE the Grayhill switches!  Keep them!   :P

Pardon my ignorance, what's the Lambda shiny box?
Imagine a wet, slightly chilled from its gas release and decompression, with water droplets condensing, sucking surface tension, slowly sliding down the side, capped by a healthy virgin froth on top..

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #217 on: December 18, 2009, 03:59:16 PM »
Is it 24v?.. yes
What's output transistor?... mje3055
Is it true 1084 283/family amp?... yes
What are the opamp boards i see in there?... part 284
I LOVE the Grayhill switches!  Keep them!... That's kind of you. I will.
Pardon my ignorance, you're pardoned.. what's the Lambda shiny box?.... dc-dc converter.
http://www.lazpro.com
I reserve the right to not sell to idiots

tommypiper

Re: 500 series Neve 1084 eq... prototype two ready for testing
« Reply #218 on: December 19, 2009, 01:44:21 AM »
You're a sweetheart.  Why are you converting DC?  I've looked in past pages... cheers.
Imagine a wet, slightly chilled from its gas release and decompression, with water droplets condensing, sucking surface tension, slowly sliding down the side, capped by a healthy virgin froth on top..

plumsolly

Re: 500 series Neve 1084 eq... any interest?
« Reply #219 on: December 19, 2009, 03:51:24 AM »
I'd be in for one or two depending on price.

is this going to be 51x or standard 500 format?

Probably standard, with a dc/dc converter.

It is now 51x compatible and I assume you would only use the dc-dc converter if you needed it to be compatible with standard racks.
Best, Ben
« Last Edit: December 19, 2009, 07:53:48 PM by plumsolly »