Simple ohm question

[ShaneSauce 2]

What is the difference between

Running my SSD 900RMS@2ohms

or

Running my SSD 900RMS@1ohm.

I think it has something to do with efficiency?

[creyc 1]

How can you run that same sub at 1 or 2 ohms? Whats the VC configuration?

At any rate theres no difference from the speaker side but to the amplifier there might be a difference. While most amps put out maximum power at their minimum supported impedances, they do so at reduced efficiency and increased noise and distortion.

For musical purposes this might make a difference, for SPL purposes probably not.

[ABXX49 20]

There won't really be any difference. 900w is 900w. What amplifier do you have? Also, do you already have your sub? Because you can't run at both of those impedances.

[ShaneSauce 2]

How can you run that same sub at 1 or 2 ohms? Whats the VC configuration?

At any rate theres no difference from the speaker side but to the amplifier there might be a difference. While most amps put out maximum power at their minimum supported impedances, they do so at reduced efficiency and increased noise and distortion.

For musical purposes this might make a difference, for SPL purposes probably not.

Well I'm saying this for when I order it.

So wiring a 1ohm stable amp to 2ohm load will be less harsh on the amp with less distortion correct?

[RobClay 20]

Well I'm saying this for when I order it.

So wiring a 1ohm stable amp to 2ohm load will be less harsh on the amp with less distortion correct?

if your amp is stable at 1 ohm i would take advantage and get a d2 sub so you can wire it at 1ohm. if its stable at 1ohm you will be fine

what sub and amp are you planning on using anyways?

Edited November 18, 2008 by RobClay

[ABXX49 20]

You are going to want to pick out your amp first. Then based off of the output of your amp, we can tell you what VC configuration you are going to want, and why you want it.

[ShaneSauce 2]

You are going to want to pick out your amp first. Then based off of the output of your amp, we can tell you what VC configuration you are going to want, and why you want it.

Well I was thinking the Kenwood KAC its 1ohm stable but they don't post power ratings at 1ohm.

The 2ohm load on it is 900RMS.

[ABXX49 20]

If you want that amp you are going to want to get the D1 VC for the sub. I would also get the Copper coil and BP power option on your sub if you want to send it that much power. Do you have a budget for an amp?

[ShaneSauce 2]

If you want that amp you are going to want to get the D1 VC for the sub. I would also get the Copper coil and BP power option on your sub if you want to send it that much power. Do you have a budget for an amp?

I was going to get the D1 of course because of a 2ohm load.

And the flatwind coil which will help the power handling, I think it will be fine @ 900RMS with the flatwind coil.

And I was trying not to spend more than $200-250.

[ABXX49 20]

That should work out well for you. D1 coil with BP and flatwind wired in series.

[ebomb321 0]

What is the difference between

Running my SSD 900RMS@2ohms

or

Running my SSD 900RMS@1ohm.

I think it has something to do with efficiency?

Shane,

while yes "900w is 900w" there is a big difference.

a simple answer to a simple ohm question would be:

while lowering an amps output impedance you are gaining power but also increasing a phase shift at a certain frequency depending on the amps "guts".

if you are looking for strait SPL and care less about accurately recreating whats on your CD/DVD/MP3 or whatever you are listening to take advantage of the 1ohm power (and possible phase shift that could gain SPL at a certain frequency).

if you want to maintain more sonic accuracy stay with the 2 ohm especially with a $250 amp.