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Good Day All!

As a new member can I say many thanks to all for the bounty of information on here, has solved a lot of problems with regard to my new house design!

I am wondering if any boffins on here can advise if a Crestron relay module, either the 0v versions in a processor or a din-8sw8 could be used as a speaker switch?
I would be using it to switch between two pairs of in ceiling speakers, through an interlock so they are never both on. This is so that an under bed tv can be watched with surround sound either from the bed or from the sofa? there is a lcr sound bar beneath the TV which swivels with it so it can be watched from the sofa, the only speakers i need to switch would be the rears? Can this be done?

Many thanks

Paul

If you are selecting between just 2 pairs of speakers you can use DPDT relay like this board (no need for the interlock since relay can only select 1 pair of speakers at a time):



and drive the relay with a digital output.

--- In Crestron@..., "pd.armstrong77" <paul_mach3@> wrote:

Good Day All!

As a new member can I say many thanks to all for the bounty of information on here, has solved a lot of problems with regard to my new house design!

I am wondering if any boffins on here can advise if a Crestron relay module, either the 0v versions in a processor or a din-8sw8 could be used as a speaker switch?
I would be using it to switch between two pairs of in ceiling speakers, through an interlock so they are never both on. This is so that an under bed tv can be watched with surround sound either from the bed or from the sofa? there is a lcr sound bar beneath the TV which swivels with it so it can be watched from the sofa, the only speakers i need to switch would be the rears? Can this be done?

Many thanks

Paul

what a fantastic suggestion! and a tremendous price!! Will there be any loss of quality?

When you say digital output, are you referring to the pro3 versiports? Can they be set to output a specific voltage or will this toy be happy with a logic closure?

Out of curiosity what is the reason that their relays can't be used, would it damage them? or the speakers, or both?

You can use the PRO3 relays to trip an external relay. I like to get relays with 24V DC coils because there is always Cresnet power around. Any time you introduce a contact into a speaker line, you could have loss, but it will be negligible and probably undetectable.

I believe the internal relays are rated for 30V. Speakers signal can exceed that. Not sure what would happen, given the transient nature of the signal. You would of course use up four of them vs just one for external and it will be messier than using a DPDT relay external (looping the inputs through those tiny terminals). It is always safest to have a level of separation between things. I recall taking over a job with a PRO2 that had many fried relays. There was a motorized door panel that had a 48V trigger on an external relay. I'm assuming that the previous guy had tried various internal relays and had relay failures. I think they were stuck closed.

- Heath -

On Mar 17, 2013, at 10:00 PM, pd.armstrong77 wrote:

what a fantastic suggestion! and a tremendous price!! Will there be any loss of quality?

When you say digital output, are you referring to the pro3 versiports? Can they be set to output a specific voltage or will this toy be happy with a logic closure?

Out of curiosity what is the reason that their relays can't be used, would it damage them? or the speakers, or both?

[Non-text portions of this message have been removed]

Sounds like it will be fine.

Heath Volmer
Digital Domain Systems
Littleton, CO

Sent from my iTypo 4

On Mar 19, 2013, at 11:02 PM, "pd.armstrong77" <paul_mach3@...> wrote:

but I could potentially use a din-8sw8 relay for the switching? its rated for 240v 16amp. I only ask as I am using these for all sorts of requirements on site from window treatments and garage door open triggers etc and I have plenty of spares on the last module? I could trigger it from the selection of the altered tv position with an interlock?

--- In Crestron@..., Heath Volmer <hvolmer@> wrote:

You can use the PRO3 relays to trip an external relay. I like to get relays with 24V DC coils because there is always Cresnet power around. Any time you introduce a contact into a speaker line, you could have loss, but it will be negligible and probably undetectable.

I believe the internal relays are rated for 30V. Speakers signal can exceed that. Not sure what would happen, given the transient nature of the signal. You would of course use up four of them vs just one for external and it will be messier than using a DPDT relay external (looping the inputs through those tiny terminals). It is always safest to have a level of separation between things. I recall taking over a job with a PRO2 that had many fried relays. There was a motorized door panel that had a 48V trigger on an external relay. I'm assuming that the previous guy had tried various internal relays and had relay failures. I think they were stuck closed.

- Heath -

On Mar 17, 2013, at 10:00 PM, pd.armstrong77 wrote:

what a fantastic suggestion! and a tremendous price!! Will there be any loss of quality?

When you say digital output, are you referring to the pro3 versiports? Can they be set to output a specific voltage or will this toy be happy with a logic closure?

Out of curiosity what is the reason that their relays can't be used, would it damage them? or the speakers, or both?

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]