Parallel Vs Bridging

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Trey - 19 Mar 2007 15:25 GMT

What produces better bass Bridging or Wiring your Subs in parallel.

Could you do have both wired at the same time.

Having the subs wired parallel and having the amp bridged

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s8n - 19 Mar 2007 15:46 GMT

It all matters on what OHM load your amp can handle

http://www.rockfordfosgate.com/rftech/woofer_wizard.as

Try that out

--
s8n

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Matt Ion - 19 Mar 2007 22:41 GMT

> It all matters on what OHM load your amp can handle.
>
> http://www.rockfordfosgate.com/rftech/woofer_wizard.asp
>
> Try that out.

That's a cool link.

Check out this sub-link:
http://www.rockfordfosgate.com/scripts/rightnow.cfg/php.exe/enduser/std_adp.php?
p_faqid=63

The pics of a good vs. a burned-out voice coil is pretty impressive :)

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GregS - 19 Mar 2007 16:12 GMT

>What produces better bass Bridging or Wiring your Subs in parallel.
>
>Could you do have both wired at the same time.
>
>Having the subs wired parallel and having the amp bridged

For a while.

greg

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D.Kreft - 19 Mar 2007 19:47 GMT

> What produces better bass Bridging or Wiring your Subs in parallel.

Neither. Bridging affects potential output, not sound quality.

> Could you do have both wired at the same time.

See the subwoofer wiring tutorials at the JL Audio website (http://
mobile.jlaudio.com/support_pages.php?page_id=145),

As already noted, this all depends upon the nominal impedance and
number of subwoofers you have combined with the capabilities of your
amplifier.

-dan

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D.Kreft - 19 Mar 2007 19:53 GMT

> Neither. Bridging affects potential output, not sound quality.

Let me rephrase this...

The *goal* of bridging is to get more power from your amp--it is not
done for SQ reasons. In theory, there is no differnce between the SQ
of a bridged vs. a parallel amp, but typically what you find in
practice is that in bridged configuration, the amp is running into
lower impedances which decreases the amount of dynamic headroom
available, and lowers the damping factor. However, if you compare an
amp wired 2 Ohm stereo versus the same amp running 4 Ohm mono, these
configurations are theoretically identical and any difference you
detect between the two would most likely be due to partaking of some
exotic Jamaican herbs before performing your listening tests. :-)

So, in short, for most amps (except for possibly Class D amps), the
higher the effective impedance per channel, the cooler the amp will
run and the better it *may* sound (some people's musical tastes won't
reveal the differences, though). Conversely, the lower the impedance,
the hotter it will run and the sloppier it is likely to sound (the
same disclaimer applies here, too).

There, that should do it. ;-)

-dan

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