Am I understaing this right?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=62126
Printed Date: May 03, 2024 at 10:59 PM

Topic: Am I understaing this right?

Posted By: dragon51
Subject: Am I understaing this right?
Date Posted: August 27, 2005 at 6:30 AM

If I was to use my Fosgate BD1000.1 with the Hx2 sub (dual 4ohm) I could safly run it at 2ohms? It's one of the older amps and I know it can run 2omhs with out any problem. Or am I miss under standing this?

When the relays are at rest (normally closed position) the woofer coils are wired in series. When ground is applied to each coil (energizing the relay coils), the voice coils are wired in parallel. With 2 four ohm voice coils you'll have an 8 ohm load at rest and a 2 ohm load when the relay coils are energized.

For each dual voice coil woofer that you want to change from series to parallel, you'll need two relays for each. They can all be controlled from the same switch.

Replies:

Posted By: Blowntweeters
Date Posted: August 27, 2005 at 12:29 PM

i would just wire the coils in parallel to run the amp at 2 ohms

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1974 ford pinto 4 15" punch Z power punch bd 1001 pioneer DEH-6700

Posted By: shott8283
Date Posted: August 27, 2005 at 2:00 PM

curious whats the purpose of wiring in a relay to that? what do you gain from it? why would you need to switch the wiring like that?

Posted By: cujo613
Date Posted: August 27, 2005 at 4:43 PM

this is really your only option of wiring on your subs. The bd1000 is not 1 ohm mono stable so you will have to run it at 4 ohm. Getting about 500-600 watts out of it

posted_image

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Alpine dva-7669 Alpine cva-1004 Zapco 360.4 zapco 1100.1 2 image dynamics idq v2 fifteens Alpine type r 5.25 components and 6x9's

Posted By: auex
Date Posted: August 27, 2005 at 5:13 PM

cujo613 wrote:

this is really your only option of wiring on your subs. The bd1000 is not 1 ohm mono stable so you will have to run it at 4 ohm. Getting about 500-600 watts out of it[/P

Uh, where did he say 2 subs?

Yes you can run the amp at 2 ohms without a problem.

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Posted By: dragon51
Date Posted: August 27, 2005 at 8:44 PM

Thanks I was also going to ask if there was any advantage to that set up but I am guessing there is not but I did not want to dubble post since you can't edit your post here. Thank you for the info posted_image

Posted By: cujo613
Date Posted: August 28, 2005 at 12:04 AM

auex][ wrote:

UOTE=cujo613]
Uh, where did he say 2 subs?

Yes you can run the amp at 2 ohms without a problem.

oops my bad I could have sworn he said 2 subs

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Alpine dva-7669 Alpine cva-1004 Zapco 360.4 zapco 1100.1 2 image dynamics idq v2 fifteens Alpine type r 5.25 components and 6x9's

Posted By: dragon51
Date Posted: August 28, 2005 at 2:02 AM

Well I really do have 2 of the same one I only asked about one because I have never seen that type of setup before, as far as wireing I know how to do all that with different subs. Thanks though, I just was not sure if there was an advantage to that set up or not. posted_image