![]() 05/18/2015 at 09:08 • Filed to: None | ![]() | ![]() |
I installed some outdoor speakers on to the back of my garage. I’d like to make some sort of switch box to alternate between the outdoor speakers and the indoor speakers inside the garage. I bought one 3 way switch. Is it possible to set this up or will I need a switch for each channel?
![]() 05/18/2015 at 09:14 |
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Yup. Each speaker will need to be hooked up to their respective sides to both their location and both like a Venn diagram.
Do you have wires that are pre attached to the speakers or the kind where you add your own?
![]() 05/18/2015 at 09:15 |
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Both sets you add your own.
![]() 05/18/2015 at 09:16 |
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Switch terminology: SPST, SPDT, and DPDT mean various combinations of single and double pole, single and double throw. The “throw” is how many wires you’re recombining, and pole is how many motions it takes to get there. When you say you have a 3-way switch, you’re talking a light switch three-way? That’s not the best way to do this - you’re better with an SPDT switch and a common, though that has some repercussions for noise and cross-talk.
![]() 05/18/2015 at 09:22 |
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I believe you will need something like this. (12 connections)
UNLESS... [needs citation] Could you tie all the left grounds and right grounds together, and only switch the L+ and R+ outputs?
If that’s possible (I don’t know if it’s a good idea) then you will only need a DPDT switch for the L+ and R+
Unless your amp can push that much, I would make sure you can only run one set at a time.
![]() 05/18/2015 at 09:28 |
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Speakers use one wire as a “ground”, certainly, but tying all the grounds together I think might cause some noise bleed between channels. Car audio typically has the “-” correspond in some way to the frame ground, certainly. I know it *can* be done simply keeping the left and right discreet with a DPDT, I just don’t know if it’s perfectly clean.
![]() 05/18/2015 at 09:29 |
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That should make things easier because you won't have to splice. Just run wires like you're running separate switches (2 positive & 2 negative). If running 4 wires on each post of the both side of the switch is too much just use connectors to go 4-2-1. I would probably go 2-1 on the outside/inside part of the switch too anyway.
![]() 05/18/2015 at 09:30 |
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I have a DPDT switch. This one.
http://www.amazon.com/gp/product/B00…
![]() 05/18/2015 at 09:35 |
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Yeah, I wasn’t sure if I could use a common ground either.
![]() 05/18/2015 at 09:35 |
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I’ll have to try it out. I’ll report back on noise level.
![]() 05/18/2015 at 09:38 |
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No, not tie ALL the grounds together...
Bundle the three L-, and bundle the three R-.
A is inside, B is outside
![]() 05/18/2015 at 09:40 |
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http://oppositelock.jalopnik.com/no-not-tie-all…
![]() 05/18/2015 at 09:42 |
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Ok, this makes sense.
![]() 05/18/2015 at 09:46 |
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I’d recommend going this route, http://www.amazon.com/Selector-Imped…
I have something similar for my outdoor speakers but without the impedance matching. I’m seriously considering upgrading to the 8 zone (of this brand) for future expansion and flexibility.
While it's a minor cost increase, it's going to simplify your setup as well as avoiding potential damage to your amp. Personally, I'd consider it a fair trade off...
![]() 05/18/2015 at 09:52 |
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You are correct. That does look better, and it being ground, the run to outside not being in use probably won’t be able to pretend to be an antenna.
![]() 05/18/2015 at 10:13 |
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Sounds reasonable to me.
![]() 05/18/2015 at 11:42 |
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Can’t you switch it at the amplifier?
![]() 05/18/2015 at 11:57 |
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I can unplug one set and plug the other set in like a caveman.
![]() 05/18/2015 at 12:02 |
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Mine allows for 4 separate sets of speakers or I can combine 2 of them or all 4.
![]() 05/18/2015 at 12:04 |
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Mine came with a non-op record player and one cassette deck that won’t close.