Modifying the studer Monitor controller
« on: September 04, 2016, 04:15:19 PM »
Hi,
I know that questions about monitor controller has been covered widely...but I need your opinion about this specific case.
I have an extra monitor controller module from my studer 089 mixer(The schematic is attached). It has all I need, but the multi source/speaker selectors (I need 4 balanced inputs and 4 balanced outputs). The volume pot doesn't look fancy, but I've had no problem with it on my mixer.

Any recommendation is so appreciated.




« Last Edit: August 26, 2017, 07:44:24 PM by Aref »


Re: Choices for adapting the studer Monitor controller
« Reply #1 on: September 04, 2016, 04:20:35 PM »
I think I'll keep the same switches on the new chaises.
« Last Edit: January 23, 2017, 06:51:37 AM by Aref »

Re: Choices for adapting the studer Monitor controller
« Reply #2 on: September 04, 2016, 04:21:16 PM »
The volume is 2*10k
The module works with -22 v.
« Last Edit: September 04, 2016, 04:28:19 PM by Aref »

Re: Choices for adapting the studer Monitor controller
« Reply #3 on: September 04, 2016, 04:22:22 PM »
bump
« Last Edit: September 11, 2016, 05:48:36 PM by Aref »

« Last Edit: January 23, 2017, 07:16:24 AM by Aref »

Re: Modifying the studer Monitor controller
« Reply #5 on: January 31, 2017, 07:38:14 PM »
This should be ok for the unbalance to balance out.
I wish I could get a comment...

Re: Modifying the studer Monitor controller
« Reply #6 on: January 31, 2017, 08:32:21 PM »
Hi Aref

I'm not really sure to understand what you try to achieve here ?
4in/4out at you x89 monitoring section ?

Best
Zam

Re: Modifying the studer Monitor controller
« Reply #7 on: January 31, 2017, 09:59:07 PM »
It's not related to my mixer. This is a spare controller module, which I want to make a standalone monitor controller in a rack with.

Re: Modifying the studer Monitor controller
« Reply #8 on: February 01, 2017, 06:32:12 AM »
Hi

Ok I got it now.
So yes, you need an input selector for source, a debalancing section, the passive studer module, a balancing section and then again a selector for output.
The relay board you show should work both way as selector.

Best
Zam


Re: Modifying the studer Monitor controller
« Reply #9 on: August 26, 2017, 07:26:10 PM »


Re: Modifying the studer Monitor controller
« Reply #10 on: August 26, 2017, 07:29:48 PM »
« Last Edit: August 26, 2017, 07:49:27 PM by Aref »

Re: Modifying the studer Monitor controller
« Reply #11 on: August 26, 2017, 07:43:09 PM »
Now looking for a subwoofer mono out circuit. Meters and the best headphone amp for this box!

Anything else?

abbey road d enfer

Re: Modifying the studer Monitor controller
« Reply #12 on: September 17, 2017, 12:16:05 PM »
Hi,
I know that questions about monitor controller has been covered widely...but I need your opinion about this specific case.
I have an extra monitor controller module from my studer 089 mixer(The schematic is attached). It has all I need, but the multi source/speaker selectors (I need 4 balanced inputs and 4 balanced outputs). The volume pot doesn't look fancy, but I've had no problem with it on my mixer.

Any recommendation is so appreciated.
Regarding audio, it is a passive section. The 22V supply is needed only for the relay, which you probably don't need, because the relay is only to allow remote control of the DIM (-20dB) function. In terms of signal handling, it's perfectly adequate, as long as the inputs are debalanced and the outputs are buffered and balanced.
Bal/debal circuits are available from SSM (Analog Devices), TI (DRV series) and THAT corp.
In most cases, performance will be adequate, whatever the brand. Choice will be influenced by availability, ease of implementation and cost, more than performance.
Who's right or wrong is irrelevant. What matters is what's right or wrong.
Star ground is for electricians.

Re: Modifying the studer Monitor controller
« Reply #13 on: October 06, 2017, 05:29:51 PM »
Regarding audio, it is a passive section. The 22V supply is needed only for the relay, which you probably don't need, because the relay is only to allow remote control of the DIM (-20dB) function. In terms of signal handling, it's perfectly adequate, as long as the inputs are debalanced and the outputs are buffered and balanced.
Thanks for helping
I need the 22v supply anyway for the in/out relays.
Didn't realise the outs are balanced!
Does it harm the output signal if I connect the meters and mono sub out before the output relays?
« Last Edit: October 06, 2017, 05:54:08 PM by Aref »

abbey road d enfer

Re: Modifying the studer Monitor controller
« Reply #14 on: October 06, 2017, 05:36:14 PM »
Didn't realise the outs are balanced!
You misunderstood my comment. The circuit is unbalanced, so you need to debal the inputs and bal the outs.
Who's right or wrong is irrelevant. What matters is what's right or wrong.
Star ground is for electricians.

Re: Modifying the studer Monitor controller
« Reply #15 on: October 08, 2017, 04:35:36 PM »
You misunderstood my comment. The circuit is unbalanced, so you need to debal the inputs and bal the outs.
Sorry, my bad.