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Question on how to bridge 4 speakers on 2 channel amp

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Old 11-07-2009, 10:09 AM
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Question on how to bridge 4 speakers on 2 channel amp

http://www.sonicelectronix.com/item_17600_Hifonics+ZXi+1010.html

I am going to get this amp along with the precision power components and kicker 6x9's.

The amp shows this:

4 ohms: 250 watts x 2 chan.

But I devided 250 x 4 and it gave me 62.

So it should give me 62 watts per speaker, and the components are 60 watts per speaker so I thought this amp would be all I need.

But how am I going to bridge 2 speakers on this? Do I just have to connect the posotive and negative of both speakers to the terminals in the same area?
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Old 11-07-2009, 04:55 PM
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This is a very powerful amp for some comps and 6x9s.

You will connect a 6x9 and a comp to the left channel and the same to the right channel. However you will not get the 62 watts you calculated but 250w to each speaker. You will have to turn the gain all the way down.

You could also wire each channel in series but it's a bit more complicated.
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Old 11-07-2009, 05:51 PM
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Wiring series isn't complicated. Wire each set of speakers using this guide:

Subwoofer Wiring Diagrams, Two 4 ohm Single Voice Coil (SVC) Speakers

just make sure you wire things up to 8 ohms.
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Old 11-08-2009, 12:46 PM
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If you are going to be running 4 speakers off an amp why not just get a 4ch amp? This way you will still have fader control. I agree with Ravemeister this is way more amp than is needed for 2 sets of speakers. Need a little more info though. Do you have or plan on running subs? What deck is running all this? How many RCA outs does it have? What car is it all going into? Give as much info as you can on the equipment you have now, plan on buying later, and ultimate goals for the system ( SQ, SPL, or just a nice daily system) then we can suggest a plan for you.
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Old 11-08-2009, 02:12 PM
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More info is definitely needed to help guide you, but here is a start:

Each channel (left right) will be powering 1 set of 6x9's and one set of components.

If the components and 6x9's are both rated to 4 ohms of resistance, wiring in parallel will see a nominal load of 2 ohms per channel. Meaning you will get that "500w" claimed power per channel.

If series wiring (which IMO is a PITA because it involves going from speaker to speaker instead of simply speaker to amp) then you will wire them so the amp sees a nominal of 8 ohms per channel. This will drop the power ratings significantly to (im guessing here... lol) 100w or so per channel.

This means that if you have 100w per channel, each speaker (or set of components) will see approx. 50w each.

Now, if you go the former way and wire in parallel, you will see the claimed power of 500w divided by 2 = 250w per speaker.

If going this route remember to keep the gain set a little bit lower and make sure to keep your frequency settings in check.
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