Rob Flinn

SSL 9K Mic Pre
« Reply #20 on: November 16, 2004, 01:34:31 PM »
Does anyone know what VA rating the Mains transformer should have to power 2 9K pre amps ?
regards Rob


[email protected]

SSL 9K Mic Pre
« Reply #21 on: November 16, 2004, 01:35:49 PM »
I would buy 10 pieces any time. Twenty if the price is around $5.

Neeno

SSL 9K Mic Pre
« Reply #22 on: November 16, 2004, 03:13:56 PM »
Quote from: "Rob Flinn"
If you like I can make some enquiries with OMEG.  Their factory is about 9 miles from where I live.


Oh man... you have a chance to save us from the 2.5k Rlog nightmare !
It's about 2 moths that i try to find this pots... but no way...

Let me know.... i will buy 10 of them !

Thanks a lot....

Neeeeeeeeeeeeeeeeeeeno
Neeno
Quote from: "CJ"
Hippies would never  kill a Llama. They might have dope crazed sex with it, but never kill it.
Quote from: "CJ"
REMEMBER, A FLUTE WITH NO HOLES, IS NOT A FLUTE, AND A DONUT WITH

Gus

SSL 9K Mic Pre
« Reply #23 on: November 16, 2004, 03:37:05 PM »
I would make it a dual switch with maybe 12 connections.  Calculate the resistor values or find one of the audio web sites that has the math or a program to build hi end switched vol controls maybe you can make aprogram for the reverse resistors need for a stepped gain control.

If I understand the gain setting min gain is 2.5K max is 0 ohm  

Most log pots I have played with are only two section linears  at 1/2 you get 10% and 90% of the value.  

For fun take a few pots apart and look at how they are made.

[email protected]

SSL 9K Mic Pre
« Reply #24 on: November 16, 2004, 04:22:59 PM »
How about a 2 pole 24 position Elma switch for $50?   :twisted:

NewYorkDave

SSL 9K Mic Pre
« Reply #25 on: November 16, 2004, 04:25:50 PM »
If Omeg's US rep is blowing you off, never fear. I'm pretty sure you can buy from them directly. Ask jrmintz; I'm pretty sure he did just that.

FrankSL

SSL 9K Mic Pre
« Reply #26 on: November 16, 2004, 05:23:00 PM »
I asked omeg some months ago about 2k5 and they told me they make 2k2 only. However this was some months ago.
Frank

Neeno

SSL 9K Mic Pre
« Reply #27 on: November 17, 2004, 08:04:50 AM »
I've got the same reply... 2k2 rlogs...
They say me to contact the swiss distributor, but they say me there is non stock for dual gang pots... and they ignored my following emails...

jrmintz... help us please !!!!!

Neeeeeeeeeeeeeeeno
Neeno
Quote from: "CJ"
Hippies would never  kill a Llama. They might have dope crazed sex with it, but never kill it.
Quote from: "CJ"
REMEMBER, A FLUTE WITH NO HOLES, IS NOT A FLUTE, AND A DONUT WITH

SSLtech

SSL 9K Mic Pre
« Reply #28 on: November 17, 2004, 11:33:42 AM »
2k2 is fine. The gain range will be less than a dB less... not a problem at all.
Keith
"A waist is a terrible thing to mind"
Quote from: PRR
Ah, but that was 1999; we don't party like that any more.

Rob Flinn

SSL 9K Mic Pre
« Reply #29 on: November 17, 2004, 12:24:05 PM »
I`ve had a positive response from OMEG already.  They are saying to me that 2K2 is the standard value, but I have written back to ask whether a custom job is feasible.

I`ll keep you posted.

Rob
regards Rob


Gus

SSL 9K Mic Pre
« Reply #30 on: November 17, 2004, 12:56:36 PM »
What is the equation for the gain of the 9k?  If we know that we can come up with resistor values for the gain steps.

For example looking at the older Green schematic the gain should be (R6 + R7/the total resistance of the sw1 in a position) +1

Find a good 2 wafer switch for the 9k and make a stepped gain control. To start it could be a DPDT for two preselected gains that will work most of the time.  Or lets have more fun it could be setup with relays to be controlled via a PC or remote interface so the pre can be close to microphones.

[email protected]

SSL 9K Mic Pre
« Reply #31 on: November 17, 2004, 02:22:18 PM »
I just got this from the US representative of Omeg:
"I believe that we would have to provide 2.2K ohms, NOT 2.5K ohms.
In that case:
50 pieces        USD 7.88 each
100 pieces      USD 7.09 each
lead time 6 weeks ARO+T/T"

Anyone interested?

Neeno

SSL 9K Mic Pre
« Reply #32 on: November 17, 2004, 03:14:18 PM »
Quote from: "Rob Flinn"
I`ve had a positive response from OMEG already.  They are saying to me that 2K2 is the standard value, but I have written back to ask whether a custom job is feasible.

I`ll keep you posted.

Rob


Great work man... keep us updated please !!!

Neeeeeeeeeeeeeeeeeeeeeeeno
Neeno
Quote from: "CJ"
Hippies would never  kill a Llama. They might have dope crazed sex with it, but never kill it.
Quote from: "CJ"
REMEMBER, A FLUTE WITH NO HOLES, IS NOT A FLUTE, AND A DONUT WITH

Neeno

SSL 9K Mic Pre
« Reply #33 on: November 18, 2004, 05:15:56 AM »
Quote from: "[email protected]"
I just got this from the US representative of Omeg:
"I believe that we would have to provide 2.2K ohms, NOT 2.5K ohms.
In that case:
50 pieces        USD 7.88 each
100 pieces      USD 7.09 each
lead time 6 weeks ARO+T/T"

Anyone interested?


They are a little exphensive... if i can't find something else cheap i will be in for 8...

Thanks a lot man !

Neeeeeeeeeeeeeeno
Neeno
Quote from: "CJ"
Hippies would never  kill a Llama. They might have dope crazed sex with it, but never kill it.
Quote from: "CJ"
REMEMBER, A FLUTE WITH NO HOLES, IS NOT A FLUTE, AND A DONUT WITH

Gus

SSL 9K Mic Pre
« Reply #34 on: November 18, 2004, 09:49:48 AM »
That is not expensive for a custom semicustom part.

[email protected]

SSL 9K Mic Pre
« Reply #35 on: November 18, 2004, 10:26:45 AM »
Quote from: "Neeno"
They are a little exphensive...


You think so? LOL. Try calling around. Alpha can make them for $1.75 if you order 1000 pieces.

Rob Flinn

SSL 9K Mic Pre
« Reply #36 on: November 18, 2004, 01:18:25 PM »
Quote
You think so? LOL. Try calling around. Alpha can make them for $1.75 if you order 1000 pieces.


What if you order 100 pieces ?
regards Rob

[email protected]

SSL 9K Mic Pre
« Reply #37 on: November 18, 2004, 02:25:08 PM »
Quote from: "Rob Flinn"
What if you order 100 pieces ?


The minimum order is 1000 pieces with Alpha.

Rob Flinn

SSL 9K Mic Pre
« Reply #38 on: November 18, 2004, 06:38:37 PM »
Quote
The minimum order is 1000 pieces with Alpha.


Even with the amount of people registered with this forum you`ld be lucky to shift 1000 !!
regards Rob

BladeSG

SSL 9K Mic Pre
« Reply #39 on: November 18, 2004, 07:01:13 PM »
From what I understand the PCB's from Gustav for this project are only the 1 channel. Is this correct?

Thanks.


 

Related Topics

  Subject / Started by Replies Last post
14 Replies
5677 Views
Last post August 27, 2004, 06:30:07 PM
by PRR
7 Replies
3053 Views
Last post July 08, 2004, 06:25:10 PM
by RemcoV
14 Replies
6715 Views
Last post January 26, 2006, 06:12:32 AM
by Andy Millar
0 Replies
1523 Views
Last post December 02, 2008, 05:21:45 PM
by mitsos