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building a sound board


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SoundImage 
Copper - Posts: 75
Copper spacespace
Joined: June 18, 2003
Location: United States
Posted: February 11, 2009 at 11:26 PM / IP Logged  
does anyone have a diagram for a switcher i am building a sound board and would like to use a momentary ground to activate each radio but only one at a time.  any suggestions would be great
i am an idiot 
Platinum - Posts: 13,666
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: February 12, 2009 at 6:52 AM / IP Logged  
How many radios and how many speakers are you planning to have on the board?  Front and Rear speakers. or just one or the other?
SoundImage 
Copper - Posts: 75
Copper spacespace
Joined: June 18, 2003
Location: United States
Posted: February 12, 2009 at 10:47 AM / IP Logged  
about 5 radios and just a few pairs of speakers but i want the radios and speakers switched individually
i am an idiot 
Platinum - Posts: 13,666
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: February 12, 2009 at 11:21 AM / IP Logged  
Front and Rear speakers. or just one or the other?   Either way it will be pretty easy to do.  You will need 4  4pole double throw relays to switch 5 radios.  You will also need 4 relays to switch between 5 sets of speakers.  That is if you have only front or rear speakers.  The way it will work is if radio one is on it will play.  If you turn on any of the other radios, they will take over.  You can have all radios turned on at one time, but only the last radio in line will play.  Turn off radio 5 and 4 will begin to play.  Turn off radio 4 and 3 will play.  Turn 5 back on it will take over.    Same with the speakers, the speakers will require a switch for 4 of  the speakers.  The radios will switch via the amp remote wire of the deck.  This will take a good bit of soldering on your part, I will be happy to draw you a picture.   Radio used to sell a relay but it appears that they have discontinued it.  You need a 4PDT relay with a 12Volt coil.  Like I said you will need 8 to do 5 radios and 5 speakers.
SoundImage 
Copper - Posts: 75
Copper spacespace
Joined: June 18, 2003
Location: United States
Posted: February 16, 2009 at 1:26 PM / IP Logged  
ok i'm pretty familiar with spdt relays but 4pdt relays are new to me, there's quite a few pins can i get a diagram.
i am an idiot 
Platinum - Posts: 13,666
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: February 16, 2009 at 8:59 PM / IP Logged  

It would help if I knew the pin layout of your relays.  I could draw it exactly as the relays are laid out. 

hotwaterwizard 
Silver - Posts: 1,350
Silver spacespace
Joined: December 11, 2003
Location: California, United States
Posted: February 16, 2009 at 11:16 PM / IP Logged  

relay_selector.pdf

http://www.siliconchip.com.au/cms/A_105741/article.html

here is the circuit that can switch up to 10.

Use several for a great board

John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
hotwaterwizard 
Silver - Posts: 1,350
Silver spacespace
Joined: December 11, 2003
Location: California, United States
Posted: February 25, 2009 at 8:15 AM / IP Logged  
just to switch the relay buttons it will take 25 cube relays, then for the power and speaker outputs it will take 6 for each component that is 30 more and 40 more for 5 sets of speakers speakers that is almost 100 relays to do the job.
John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
hotwaterwizard 
Silver - Posts: 1,350
Silver spacespace
Joined: December 11, 2003
Location: California, United States
Posted: February 26, 2009 at 1:46 AM / IP Logged  

OKAY after many hours of thought I figured it out. car_stereo_display.pdf

building a sound board -- posted image.

John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
i am an idiot 
Platinum - Posts: 13,666
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: February 26, 2009 at 5:32 AM / IP Logged  
SoundImage, don't be scared, if you get the relays and post a diagram of the layout of the pins, my picture will be much less intimidating and you will be able to do it. The remote turn on wire from the radios will control the switcher for the radios. You will have to have 4 switches to control the speakers. In the diagram above they appears to be 5 Pole Double Throw relays. You need 4 Pole Double Throw relays to do it the way I am planning.
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