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post #1 of 16 (permalink) Old 03-05-2013, 12:12 PM Thread Starter
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Wiring in series to lowers question

Hi all. I want to add speakers to my lowers and run them in series off my RF PBR 300x2. The amp is both 2 and 4 ohm stable. Speakers up top are hawg wired sx 2ohm. Do i have to get 2ohm rated speakers for the lowers to safely run this configuration... or could i use 4ohm speakers??? Im not an audio guy, i want to do it myself, and i just want to keep it simple. Thanks for advice!
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post #2 of 16 (permalink) Old 03-05-2013, 12:29 PM
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man... im interested as well... I have my ZX uppers wired in series with the ZX lowers.

I'm not 100% sure i have it wired correctly...I got a call into HW, for some reason my HW amp seems to putter out above 50% volume.

check out this link, might help out. Scroll all the way to the bottom.

http://www.bcae1.com/spkrmlti.htm

This is how im wired now..

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Last edited by Dmize; 03-05-2013 at 12:37 PM.
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post #3 of 16 (permalink) Old 03-05-2013, 01:18 PM
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Quote:
Originally Posted by dmize View Post
man... im interested as well... I have my ZX uppers wired in series with the ZX lowers.

I'm not 100% sure i have it wired correctly...I got a call into HW, for some reason my HW amp seems to putter out above 50% volume.

check out this link, might help out. Scroll all the way to the bottom.

http://www.bcae1.com/spkrmlti.htm

This is how im wired now..
If the drawing on the dry erase board is the way you have it, your speakers are wired in parallel. In series, the + from the amp goes to the first speaker +, the - of that speaker goes to the + of the second speaker then the - of the second speaker goes to the - of the amp. This makes one path for the current to flow, hence series one following the other. What your drawing shows is a parallel circuit. This means the amp has two paths for current flow. This also effectively lowers the impedance that the amp sees and causes the damage for over current.

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post #4 of 16 (permalink) Old 03-05-2013, 01:31 PM
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That's a nice site. It says why you may be having problems running in Parallel. Depending on your speakers and amp rating you may be dropping your impedance too much.

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post #5 of 16 (permalink) Old 03-05-2013, 01:40 PM
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I had series and parallel backwards.

I want to wire them in parallel.

I have 4 speakers (HW zx) each 4 ohms and my amp (HW rs400) is rated for
400w @2 ohms.

The pic above on the dry board is wired correctly then I take it?

The amp has a wire harness for front / rear channels. The front channel runs to the fairing... would it be ok to use a vamp tap and connect the lowers to the front channel BEFORE the crossover in the fairing (as drawn in the picture)?

D.

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post #6 of 16 (permalink) Old 03-05-2013, 02:02 PM
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run them just like the picture shows. + to + and - to - stacking 2 speakers per channel. that will drop your ohm rating to 2 ohm stereo which the pbr300x2 is rated for 150 (pushes out more though) per channel at that configuration. thats how i have my 4 fairing speakers ran and they sound amazing...
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post #7 of 16 (permalink) Old 03-05-2013, 02:05 PM
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also dont use vamp connectors for that, take the time and rewire everything together to make sure you have good/clean connection. It might take you 10 more minutes and 2 more feet of wire, but it will be done correctly.
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post #8 of 16 (permalink) Old 03-05-2013, 07:19 PM Thread Starter
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Originally Posted by bronzerx7 View Post
run them just like the picture shows. + to + and - to - stacking 2 speakers per channel. that will drop your ohm rating to 2 ohm stereo which the pbr300x2 is rated for 150 (pushes out more though) per channel at that configuration. thats how i have my 4 fairing speakers ran and they sound amazing...
So what Ohm rating are the two sets of speakers that you are running?? My understanding of "in series" is... add the ohm rating of each set (2ohm and 2ohm = 4 ohms needed from amp)... so if I go 2ohm set with a 4ohm set in series, I get 6ohm needed from amp... my amp is stable at 4 ohms, not a good idea to go 2 and 4????

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post #9 of 16 (permalink) Old 03-05-2013, 08:10 PM
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no sir, youve got it backwards... running 2 4ohm speakers in parallel will result in a 2 ohm load. running 2 2ohm speakers in line would make for 1 ohm. running a 4 and a 2 ohm in line would prob bring ya around 1.5 ohms..


good info can be found here - http://www.bcae1.com/spkrmlti.htm
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post #10 of 16 (permalink) Old 03-05-2013, 10:09 PM Thread Starter
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Re: Wiring in series to lowers question

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Originally Posted by bronzerx7 View Post
no sir, youve got it backwards... running 2 4ohm speakers in parallel will result in a 2 ohm load. running 2 2ohm speakers in line would make for 1 ohm. running a 4 and a 2 ohm in line would prob bring ya around 1.5 ohms..


good info can be found here - http://www.bcae1.com/spkrmlti.htm
Thanks... but Im talking about wiring in series, not parallel.

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