help with 18" bl

[cheapaudio 0]

im ordering a 18" bl series sub with coling, flatwind, and for daily. what would be the pros and cons of gettin a 1 ohm or 2 ohm or universal sub?

[Fi Car Audio 64]

1 Ohm or 2 Ohm is based on the needs of your amp... D1 can be wired to .5 or 2 Ohm and D2 can be wired to 1 or 4 Ohm. Most single sub setups with 1 amp use the D2s as 1 Ohm monoblocks are most common.

Universal allows you to be able to swap out via a recone to any coil in the lineup. For reference the D2 coil is the "universal" gap... D1 is slightly smaller.

Thanks,

Scott

[Joe 0]

Well really it comes down to subwoofer impedence and amplifier impedence stability.

A DVC subwoofer can be wired 2 ways,series and parallel.

1 Ohm DVC sub with voice coils wired in series = 2 ohm impedenceth

1 ohm DVC subwoofer with voice coils wired in paralell = 0.5 ohm load

2 ohm DVC subwoofer with voice coils wired in series = 4 ohms

2 ohm DVC subwoofer with voice coils wired in parallel = 1 ohm

The universal option Fi offers i belive allows the user to switch between 1 ohm and 2 ohm voice coils.

[cheapaudio 0]

so lets say i had an amp that runs down to 1 ohm and i only get one 18" sub,, iwould have to get a dual 2 ohm right? to drop to 1 ohm? and i would have to have two dual 1 ohms to run at 1 ohm? and does the universal option hurt the sub any, performance wise? sorry im just startin to learn.

Edited December 19, 2007 by cheapaudio

[Joe 0]

If you have an amp that supplies ample power at 1 ohm and you want to se one subwoofer then you'll want to buy a dual 2 ohm subwoofer.

If you want to use an amp that has ample power at 1 ohm and want to use two subwoofers then you'll want to buy two dual 1 ohm subwoofers and wire the coils in parallel and then wire the subs to the amp in series.

One dual 2 ohm subwoofer with it's voice coils wired in parallel presents the amp with a 1 ohm load

One dual 1 ohm subwoofer with it's voice coils wired in parallel presents the amp with a 0.5 ohm load/

What amp are you planning on using?

[cheapaudio 0]

im gettin just 1 dual 2 ohm 18" BL sub (im on a budget) then try to find somebody to build me a box, and what ever amp i can find for bout $500 to $600 that will push it. any suggestions?

Edited December 21, 2007 by cheapaudio

[BKOLFO4 29]

I Have an 07 US Amps MD3D for sale NIB for $400 shipped. 2000 x 1 and 0.5 ohm stable.

Edited December 21, 2007 by BKOLFO4