Introducing OTTO2 - Page 5

BrianDonegan · 26th October 2012, 06:00 PM

Quote:

Originally Posted by orpheus

Any issues with chaining OTTO's? I have a USB to i2s converter, the MUX, and the DSD output from my SACD player via Teleporter to input to my Buffalo II. I thought I could use one OTTO to switch between the MUX and the SACD and output to another OTTO to switch between OTTO #1 and the USB to i2s converter. Would this cause any problems?

Stated more simply, three i2s sources(1, 2, 3), two OTTOS(A, B).
1 & 2 switched with OTTO A.
3 and OTTO A switched with OTTO B connected to the Buffalo II.

I could keep all the wires very short, stacking the OTTOS.

Thank you for your time and help.

-Aaron.

That should work fine.

Russ White · 01:59 PM

Yes you can absolutely do that.

Zebb · 22nd February 2013, 01:06 PM

All of Otto-II's inputs and outputs seem to have pull-down resistors (or are they pull-up). Why is that? Are they really needed?

Russ White · 22nd February 2013, 01:27 PM

Because it is good engineering practice. It keeps drains and sources referenced to GND even if they are left open.

It is a mux/demux so what is an input or an output is totally up to you.

Of course you can omit them. But I wouldn't. They do no harm.

DQ828 · 14th March 2013, 09:54 PM

Quote:

Originally Posted by Russ White

Because it is good engineering practice. It keeps drains and sources referenced to GND even if they are left open.

It is a mux/demux so what is an input or an output is totally up to you.

Of course you can omit them. But I wouldn't. They do no harm.

So what resistor banks should I buy for switching between SPDIF inputs?

DQ828 · 16th March 2013, 05:12 AM

Ok, don't panic, I found them, didn't see them hiding amongst the terminal blocks that I hadn't opened.

albertob · 15th August 2013, 09:13 AM

Hello, I'm using a otto2 to switch between i2s and spdif using a switch. Operating properly. I would like to place an LED to indicate signal which is in use, how I can do it with otto2?. Thank you!

DQ828 · 15th August 2013, 10:39 AM

Quote:

Originally Posted by albertob

Hello, I'm using a otto2 to switch between i2s and spdif using a switch. Operating properly. I would like to place an LED to indicate signal which is in use, how I can do it with otto2?. Thank you!

You could use a 3 Pole Double Terminal switch, (3PDT)

BrianDonegan · 16th August 2013, 01:29 PM

Quote:

Originally Posted by orpheus

Any issues with chaining OTTO's? I have a USB to i2s converter, the MUX, and the DSD output from my SACD player via Teleporter to input to my Buffalo II. I thought I could use one OTTO to switch between the MUX and the SACD and output to another OTTO to switch between OTTO #1 and the USB to i2s converter. Would this cause any problems?

Stated more simply, three i2s sources(1, 2, 3), two OTTOS(A, B).
1 & 2 switched with OTTO A.
3 and OTTO A switched with OTTO B connected to the Buffalo II.

I could keep all the wires very short, stacking the OTTOS.

Thank you for your time and help.

-Aaron.

That should be fine. It will come down to keeping the wiring neat.

RollE2k · 2nd January 2014, 11:42 AM

i forgot to ask - if using external MCK from say two i2s sources - does this "switch" really work problem free with up to 100MHz?

26th October 2012, 06:17 PM	#42
Russ White diyAudio Member Join Date: Jan 2005 Location: Nashville, TN, USA	Yes you can absolutely do that. __________________ Less pulp more juice Twisted Pear Audio/Twisted Pear Audio Blog Last edited by Russ White; 27th October 2012 at 01:59 PM.

22nd February 2013, 01:27 PM	#44
Russ White diyAudio Member Join Date: Jan 2005 Location: Nashville, TN, USA	Because it is good engineering practice. It keeps drains and sources referenced to GND even if they are left open. It is a mux/demux so what is an input or an output is totally up to you. Of course you can omit them. But I wouldn't. They do no harm. __________________ Less pulp more juice Twisted Pear Audio/Twisted Pear Audio Blog

15th August 2013, 09:13 AM	#47
albertob diyAudio Member Join Date: Sep 2009 Location: Spain	Led in otto2 Hello, I'm using a otto2 to switch between i2s and spdif using a switch. Operating properly. I would like to place an LED to indicate signal which is in use, how I can do it with otto2?. Thank you! __________________ SF Cremona clone DIY speakers

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22nd February 2013, 01:06 PM	#43
Zebb diyAudio Member Join Date: Oct 2009 Location: London	All of Otto-II's inputs and outputs seem to have pull-down resistors (or are they pull-up). Why is that? Are they really needed?

16th March 2013, 05:12 AM	#46
DQ828 diyAudio Member Join Date: Mar 2010 Location: Lake Macquarie, East Coast Australia	Ok, don't panic, I found them, didn't see them hiding amongst the terminal blocks that I hadn't opened.

2nd January 2014, 11:42 AM	#50
RollE2k diyAudio Member Join Date: Nov 2007	i forgot to ask - if using external MCK from say two i2s sources - does this "switch" really work problem free with up to 100MHz?

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