How do i hook up 5 pairs of speakers to one receiver? - AVS Forum
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post #1 of 21 Old 01-18-2014, 04:29 PM - Thread Starter
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One of my friends wants me to hook up a stereo system in his hoop barn. We were thinking of having 5 sets of speakers. I'm just wondering how to hook them up to a receiver. I'm also wondering what receiver would be best for this. I have about 300 to spend on a receiver.

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post #2 of 21 Old 01-18-2014, 06:24 PM
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If all you want is 5 stereo pairs look at something more appropriate to that many stereo pairs like these units instead of a receiver (or do you need other functionality of the receiver? what sources and other uses do you have?) http://www.parts-express.com/cat/multi-room-stereo-amplifiers/131. Receivers aren't generally set up to handle more than two or three stereo pairs....altho in an all stereo sound mode and hooked up as a 3 pair in a 7 ch receiver plus 2 zones I suppose might work....

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post #3 of 21 Old 01-19-2014, 09:37 AM
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What you want is five speakers and a subwoofer; not five PAIRS of speakers.

I suggest that you look at the Martin-Logan MLT-2 system ,which is a really good deal right now at Amazon.

The Harman-Kardon AVR 1700 is $300 from Amazon also; that is a good unit.
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post #4 of 21 Old 01-19-2014, 10:06 AM
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So 10 speakers, connected in series, to 5 outputs of a 5.1 receiver, wouldnt work ? Why ?
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post #5 of 21 Old 01-19-2014, 10:13 AM
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10 speakers connected in SERIES???????; that is so ludicrous that I don't know where to start!

How do you connect 5 things to 10 things in series??

It doesn't even begin to make sense.That is about like saying "we will put 11 wheels on the car in a backwards-forward-sideways configuration".

On a 5.1 receiver, EACH of the five amplifier outputs COULD be hooked to a pair of speakers, either in series or in parallel, but there are problems with doing this.

It would be far better to just have each output connected to a single speaker.
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post #6 of 21 Old 01-19-2014, 10:19 AM
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I mean 2 speakers in series, for each output , for a total of 10 speakers
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post #7 of 21 Old 01-19-2014, 10:22 AM
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Would they be in two different rooms or locations?

Is that what you are getting at?

If they are going to all be in the same location, why use two instead of one larger one?

If two rooms or locations, just get a receiver with two zones.
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post #8 of 21 Old 01-19-2014, 10:31 AM
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For a bar-club with multiple rooms , low listening levels, the owner actually wanted 14 speakers...
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post #9 of 21 Old 01-19-2014, 07:28 PM
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What is a hoop barn? Some sort of basketball camp? smile.gif

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post #10 of 21 Old 02-10-2014, 03:57 PM - Thread Starter
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ok i was thinking i would get a onkyo tx-8050 to power everything. Now im wondering how i need to wire the 10 speakers to it. Could i use something like this? http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4966121

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post #11 of 21 Old 02-10-2014, 03:59 PM - Thread Starter
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ok i was thinking i would get a onkyo tx-8050 to power everything. Now im wondering how i need to wire the 10 speakers to it. Could i use something like a NXG Technology NX-VCH8 connecting block?

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post #12 of 21 Old 02-10-2014, 07:51 PM
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You would need a speaker selector switch with impedance protection like this.
http://www.parts-express.com/dayton-audio-ss6-speaker-selector-impedance-matching-1-in-6-out--300-972

As long as the level is low and the impedance protection is engaged, I think the Onkyo would be fine. Make sure it has adequate ventilation.

The Onkyo also has pre-outs, so you could add additional amplification, if necessary.
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post #13 of 21 Old 02-13-2014, 04:32 PM - Thread Starter
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ok so if i just use 4 pairs of speakers would it work to wire 4 in series parallel to one channel and the other 4 to the other channel? also would i need a selector switch if i did that?

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post #14 of 21 Old 02-13-2014, 08:20 PM
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Speaker selector switch is the way to go - impedance protection and ability to select zones independently.
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post #15 of 21 Old 02-14-2014, 10:19 AM
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Quote:
Originally Posted by pat99 View Post

ok so if i just use 4 pairs of speakers would it work to wire 4 in series parallel to one channel and the other 4 to the other channel? also would i need a selector switch if i did that?

You don't want to wire multiple pairs of speakers in series from one speaker output. That effectively cuts the impedance in half, and will be very strenuous on your receiver or amp.

Like others recommended, get a speaker selector with impedance protection (automatically adjusts the impedance based on how many speakers are running) or get a proper multi-channel amp. As an alternative, you could get two 5 channels amps or five 2 channel amps and split the line level signals to them.

If you're looking to go on the cheap and not play music too loud, grab 3, 4 or 5 of these. http://www.parts-express.com/lepai-4x45w-mini-amplifier-with-remote-usb-mp3-media-card-fm--310-304. They have the RCA input and output so you could string them together with simple RCA cables and adjust the volumes in different rooms as needed.

What are you using as a source, CD player, ipod?
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post #16 of 21 Old 02-14-2014, 02:33 PM
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Quote:
Originally Posted by kgallerie View Post

You don't want to wire multiple pairs of speakers in series from one speaker output. That effectively cuts the impedance in half, and will be very strenuous on your receiver or amp.

No in SERIES doubles the impedance. So two 8 ohm speakers in series is 16 ohms. Two speakers in PARALLEL halves the impedance, two 8 ohm in parallel is 4 ohms.

Amplifiers will output less power into 16ohms and more into 4 ohms - that is if they can safely handle 4 ohms, not all amps can.

So other than reduced power there is no reason why a 5.1 amp can't run with 10 speakers, two in series on each channel. I would not run a 5.1 amp with two speakers in parallel as not many 5.1 amps can handle a 4 ohm load on all 5 channels at once. But putting the two speakers in series actually helps the amp run cooler.
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post #17 of 21 Old 02-14-2014, 02:40 PM
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Quote:
Originally Posted by pat99 View Post

ok so if i just use 4 pairs of speakers would it work to wire 4 in series parallel to one channel and the other 4 to the other channel? also would i need a selector switch if i did that?

Yes four speakers per channel can work very well if the speakers are matched (same make and model). You put two pairs in series and then put the two pairs in parallel. That comes out to exactly 8 ohms which is ideal.

(pair 1) 8+8 ohms in series = 16ohms
(pair 2) 8+8 ohms in series = 16ohms

pairs 1 & 2 in parallel, that is 16 / 2 = 8 ohms

Be cognizant of polarity. The series goes + to - just like batteries gang together. Then the two groups of pairs go plus to plus and minus to minus.

-SP1+ -SP2+
-SP3+ -SP4+

Then both left minus (Sp1 & 3) to the amp minus and both right plus (SP2 & 4) to the amp plus. If you get polarities mixed up some speakers will try to cancel each other out acoustically and it will sound bad!

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post #18 of 21 Old 02-15-2014, 10:12 AM
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Quote:
Originally Posted by Glimmie View Post

No in SERIES doubles the impedance. So two 8 ohm speakers in series is 16 ohms. Two speakers in PARALLEL halves the impedance, two 8 ohm in parallel is 4 ohms.

Amplifiers will output less power into 16ohms and more into 4 ohms - that is if they can safely handle 4 ohms, not all amps can.

So other than reduced power there is no reason why a 5.1 amp can't run with 10 speakers, two in series on each channel. I would not run a 5.1 amp with two speakers in parallel as not many 5.1 amps can handle a 4 ohm load on all 5 channels at once. But putting the two speakers in series actually helps the amp run cooler.

Crap.....brain fart and got them confused for a minute. Thanks for correcting me.
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post #19 of 21 Old 02-15-2014, 11:55 AM - Thread Starter
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so if i wire them like Glimmie said then i wouldnt need a selector switch would i?

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post #20 of 21 Old 02-17-2014, 07:27 AM
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Quote:
Originally Posted by pat99 View Post

so if i wire them like Glimmie said then i wouldnt need a selector switch would i?
Technically you could get by without the selector switch. However, using the switch makes it easier to turn on/off different sets and also reduces the possibility of phasing problems if Glimmie's wiring method isn't followed to the T.
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post #21 of 21 Old 02-21-2014, 03:59 PM
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