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wiring woofers in series make them louder?


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s_goodie 
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Posted: December 02, 2007 at 6:25 PM / IP Logged  
will wiring your subwoofers in a series make it louder or is it pointless
Stuey BABE
techman93 
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Posted: December 02, 2007 at 8:26 PM / IP Logged  
What is the main objective of your question? Do you know what series vs. parallel wires does? Did you learn about resistance and ohms and how to calculate different scenarios of subs set ups? Amp will put less power (wattage) out at higher ohms and also changes the frequency ranges as well.
https://www.the12volt.com/ohm/ohmslaw.asp
https://www.the12volt.com/caraudio/woofer_configurations.asp
The wire I'm test'n isn't doin' what it's supposed to be doin'... I am so glad I printed that tech sheet, with the wrong info.
Do it right the first time... or I might have to fix it for ya
s_goodie 
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Posted: December 02, 2007 at 8:45 PM / IP Logged  
thanx so,doese it matter what subwoofers your pushing.
Stuey BABE
audiocableguy 
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Posted: December 02, 2007 at 9:16 PM / IP Logged  
Your question cannot be answered with a Yes or a No. Math, your answer is in the numbers. Each situation will vary with type and number of amplifiers, speakers, etc.
aznboi3644 
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Posted: December 03, 2007 at 1:52 AM / IP Logged  
wiring DVC coils in series doubles the motor strength compared to paralleling the coils...thats all I can add lol
haemphyst 
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Joined: January 19, 2003
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Posted: December 03, 2007 at 8:33 AM / IP Logged  
aznboi3644 wrote:
wiring DVC coils in series doubles the motor strength compared to paralleling the coils...thats all I can add lol
Ummmm... I think that's not true... Paralleling the voice coils increases the current through the voice coils, thus increasing amp-turns, thus increasing magnetic flux to push against the static flux of the magnets... If wired in series, you have to increase the voltage by a factor of 1.414 to get the same current, and equal amp-turns.
I'll have to draw it out to be sure, but that should be right. That's why you get more output when the coils are paralleled. (3dB gain, IIANM)
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Steven Kephart 
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Posted: December 03, 2007 at 10:20 AM / IP Logged  

I think what he means is in series BL goes up.  This is true, but so does Re.  Many engineers look at motor strength as BL^2/Re which takes wiring differences out of the equation.  However Dan Wiggins always liked to compare Qes instead as he said it was more accurate.

s_goodie; if you apply the same power to a sub in series as you do in parallel, output will be the same.  Due to ohms law, if you decrease the load (parallel instead of series) for a given voltage, current increases and so does power output.  If the amplifier can handle the extra load then output will increase due to more power applied.  Of course this is a gross generalization as the design of the equipment being used will have an effect on this.  For instance an amp with a tightly regulated power supply like the JL slash series amps would produce nearly the same amount of power at both loads to where differences would be inaudible.

DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: December 03, 2007 at 10:30 AM / IP Logged  
Haem, wiring a DVC in series increases BL since Re doubles (and L doubles, the length of wire in the magnetic field.)  But as you say, with a fixed input voltage wiring in parallel doubles current which will increase B (magnetic flux strength.)   Bottom line: it is really impossible to predict which effect has more influence on the loudspeaker's performance without making several gross assumptions and keeping certain factors constant which are not constant in actual application.  Higher BL does not necessarily have a direct impact on increasing output levels either, although it generally will improve things like transient response at the expense of decreasing Qes and increasing Fb.  Most loudspeaker manufacturers rate BL with DVC coils in series.
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DYohn 
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Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
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Posted: December 03, 2007 at 10:31 AM / IP Logged  
Hi Steven.  wiring woofers in series make them louder? -- posted image.
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sarcomax 
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Posted: December 04, 2007 at 10:52 AM / IP Logged  
The poor OP has not understood word one after his last post... Yes it matters what woofers you are pushing. the heavier ones strain my back.

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