Increasing Q with a 4 Ohm Resistor.

[brucek]

From the looks of things the low end stayed essentially the same

Look at the second plot and observe the flatness from 7Hz-15hz. Now look at the first plot for that same range. Quite a change in Q of the entire plot. Unfortunaltely as Jagman would probably attest to, with regard to this tactic, he won the battle, but lost the war.

brucek

[jagman]

brucek wrote:

Look at the second plot and observe the flatness from 7Hz-15hz. Now look at the first plot for that same range. Quite a change in Q of the entire plot. Unfortunaltely as Jagman would probably attest to, with regard to this tactic, he won the battle, but lost the war.

brucek

Bruce nailed it.

I think it was a relatively cheap experiment ($40) that was worth trying. Especially since I had issues in the lower and upper bass regions and the resistor addressed both. It also had the potential to help others who had similar concerns. The problem is the decrease in SQ associated with the resistor. It's easy to say distortion would increase with the addition of a resistor, but you just don't know how it sounds until you try. I've become too acclimated to low distortion bass and the trade off is just too much.

[txsmoke]

This is a little late in the game, but a variable resistor can be used to adjust system Q for drivers with dual voice coils. There's a blurb on the Cult FAQ with a link to Adire.

FAQ
Adire's FAQ (PDF)

Mike